• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a monitoring device and a method for determining operating health of a pressure medium operated device. The monitoring device (4) comprises means for processing input measuring data (3) relating to operation of the pressure medium operated device (1). An operating condition value (12) is determined in the monitoring device, where after the operating condition value is compared (13) to an input reference data (9) in order to determine current operating health (14). The reference data is determined by utilizing strength analysis (11), which is executed for a design model (10) of the associated pressure medium operated device.(Figure 1)
    公开号:SE1750722A1
    申请号:SE1750722
    申请日:2015-11-25
    公开日:2017-06-08
    发明作者:Leinonen Manu；Paltemaa Harri
    申请人:Hydroline Oy；
    IPC主号:
    专利说明:

    MONITORING DEVICE AND METHOD FOR DETERMINING OPERATING HEALTHOF PRESSURE MEDIUM OPERATED DEVICE Background of the invention The invention relates to a nwnitoring device for de-termining operating health of a pressure medium operated de-vice.
    The invention further relates to a method for deter-mining operating health of a pressure medium operated device.
    The field of the invention is defined more specifical-ly in the preambles of the independent claims.
    Hydraulic systems may be provided with different hy-draulic devices, such as hydraulic actuators for causing de-sired movement such as rotation and linear movement. The hy-draulic devices are subjected to wear during their use and theymay eventually fail.
    Further, fail of a component or structure of the device may harm the operation of the device, and may al-so cause damage to other devices connected. to the hydraulicsystem. Therefore different systems and monitoring devices aredeveloped for determining and indicating operating health ofthe hydraulic devices. Document US-2009/0019938-Al discloses arotary machine provided with a diagnostic system. In order todetermine the operating health, monitoring results are compared to results of practical bench tests. However, the known solu- tions have shown to contain some disadvantages.
    Brief description of the invention An object of the invention is to provide a novel and improved monitoring device and method for determining operatinghealth of a pressure medium operated device.The monitoring' device according' to the invention ischaracterized in that the input reference data is computed us-ing strength analysis executed for a design model of the pres-sure medium operated device.
    The method according to the invention is characterizedby determining the input reference data. by using' a strength analysis executed for a design model of the pressure medium op-erated device.
    An idea of the disclosed solution is that an operationcondition value is determined for one or more pressure mediumoperated devices by means of a monitoring device. Operation ofthe monitored device is næasured by næans of næasuring meansand the measuring data is input to the monitoring device in or-der to further process it. The monitoring device produces oneor more operating condition values on the basis of the receivedmeasuring data. In order to determine the present operatinghealth of the monitored device, the monitoring device comparesthe determined operating condition value to a reference data.The reference data is based on design data or model of the mon-itored pressure medium operated device and is produced by uti-lizing strength analysis for the design data.
    An advantage is that the disclosed solution providesimprovements to health nwnitoring of pressure medium operateddevices. The reference data may be produced easy and fast sinceit is based on design data and strength analysis. The referencedata may be produced already during design work and needs noextensive separate actions. The design data is already availa-ble and may be analyzed by means of a suitable computer pro-gram, for example.
    Furthermore, modifications to the design da- ta may be easily taken into consideration. Thanks to the dis-closed solution practical physical testing of the pressure me-dium operated device is not necessarily required for determin-ing the reference data.
    According to an embodiment, the nwnitoring device isprovided with at least one data set comprising reference databased on fatigue analysis calculation. Thus, the monitoring de-vice is configured to compare the processed current operatingcondition value with the reference data of the fatigue analysiscalculation.
    According to an embodiment, the monitoring device com-prises at least one processor for executing at least one moni- toring program in the processor. The processor may then process the received measuring data and perform the comparison with theinput reference data.
    According to an embodiment, the monitoring device com-prises means for filtering the received measuring data in orderto recognize measuring values which are significant regardingthe loadings and the operating health, and on the other hand,to detect measuring results, which are of less importance re-garding the operating health. The nwnitoring device may com-prise a control unit provided with at least one filtering pro-gram, the execution of which program is configured to analyzethe measuring data. The filtering program may be arranged toclassify the received measuring values and results. Thus, thefiltering step may provide two or more measuring data classesand having different influence health. importance to the operating According to an embodiment, the monitoring device com-prises filtering means for filtering the received measuring da-ta according to predetermined principles. Thus, the monitoringdevice may be configured to gather only relevant measuring dataand process it. The filtered data may comprise data of signifi- cant pressure pulses directed to the monitored device and strain history of the nwnitored device, whereby the filtereddata may only comprise data which is significant regarding fa-tigue. The filtering principles may define the nwnitored fea-tures and limit values and ranges for the same.
    According to an embodiment, the reference data is de- termined. by means of Finite Element Analysis, known as FE-analysis.
    According to an embodiment, the reference data inputto the monitoring device comprises a reference value or a setreference values. The reference value may thus comprise one ormore numerical values. The reference value may determine maxi-mum allowed numerical value for a determined physical property.
    According to an embodiment, the reference value maycomprise maximunl amount of events when. pressure acting' in a pressure space of the pressure medium operated device exceeds a predetermined pressure limit. Such high pressure situations mayhave significant influence to wearing and mechanical loading ofthe pressure medium operated device.
    According to an embodiment, the input reference valuemay comprises maximum total amount of operating cycles definedfor the associated pressure medium operated device or a criti-cal single component of the device. Alternatively, the refer-ence value may comprise maximum number of significant operatingcycles comprising loadings that exceed a predetermined load andare considered to be harmful for the structure of the device orwhich may cause extensive wearing. When counting the operatingcycles of the monitored device, filtering may be executed forthe measuring results for recognizing the_significant operatingcycles. Thus, by means of the filtering, operating cycles hav-ing normal or minor effect on the operating health may be ig-nored.
    According' to an embodiment, the reference value maycomprise a maximum mechanical loading value. Alternatively, thereference value may comprise a maximum cumulative value for me-chanical loading. The mechanical loading values may be deter-mined for a desired component or structural part of the pres-sure medium operated device. The system may monitor conditionof a critical component, for example.According to an embodiment, the reference value maycomprise a maximum amount of nwvement of the pressure mediumallowed total travel of a movable member operated device. Thus, of the device may be determined. The design data may compriseinformation on sealed machine elements and their seals, wherebythe strength analysis may determine maximum total travel forthe seals, for example.
    According to an embodiment, the reference data inputto the monitoring device comprises a reference model, which maybe a mathematical model relating to fatigue determination. Thereference model may comprise an algorithm or computer programproduct and it may be executed in a processor of the monitoringwhereby it device. The reference model may also be adaptive, may take into account changing operating conditions and usage.The reference model may be deduced from a nwdel produced bymeans of a strength analysis tool or software.
    According to an embodiment, the device is configuredto determine the operating health of the monitored pressure me-dium operated device by nwnitoring the operating life of onesingle critical component of the monitored device. The selectedcritical component may be determined beforehand on the basis ofthe design work and strength analysis. Thus, the reference datainput to the monitoring' device may be determined. by fatigueanalysis and may comprise a fatigue limit for the critical com-ponent, Thanks to this embodiment, for example. the monitoring may be focused to components, which may be critical regardingsafety or operation of the nwnitored pressure medium operateddevice. The selected monitored object may also be a componentknown to be vulnerable.
    According to an embodiment, the device being monitoredis a hydraulic cylinder arranged to produce linear movement.
    According to an embodiment, the device being monitoredis a hydraulic motor arranged to produce rotation movement.
    According to an embodiment, the device being monitoredis a hydraulic pump arranged to generate hydraulic power to ahydraulic system.
    According to an embodiment, the device being monitoredis a hydraulic pressure accumulator arranged to store pressureenergy.
    According to an embodiment, the pressure medium oper-ated device being monitored is a pneumatic device, such as a pneumatic cylinder, motor, pump or pressure accumulator. Thus,the solution disclosed in this patent application may also beutilized for monitoring devices which are operated by means ofpressurized gas or any other pressurized fluid.
    According to an embodiment, the nwnitoring device islocated at the pressure medium operated device being monitored.Thus, the monitoring device may be integrated to be part of the structure of the pressure medium operated device. Alternative- ly, the monitoring device may comprise a body and fastening el-ements allowing mounting and dismounting the monitoring deviceto the nwnitored hydraulic or pneumatic device. Further, themonitoring device may be a module comprising at least a controlunit, at least one measuring device and a data connection unitintegrated. into one unit. The monitoring' device may also beprovided with fast coupling means, whereby the monitoring de-vice having the module configuration may be fastened to a hy-draulic or pneumatic device in one unit and correspondingly dismounted therefromi The data connection unit may comprise wired or wireless data communication means allowing data commu-nication between the monitoring device and at least one exter- nal computer, server or electrical terminal device.
    According to an embodiment, the nwnitoring device is located external to the pressure medium operated device being monitored. Then, measuring data may be transmitted from one or more measuring devices to the monitoring device via wireless or wired data communication means. The measuring data may be sent to the monitoring device periodically, continuously or accord- ing to a request. The monitoring device may be a mobile elec- trical terminal device such as a laptop, tablet computer, palm- top computer, smart phone or special mobile computer designed for service personnel. Alternatively, the monitoring device may be a personal computer, server, a set of several servers or computers, or a net of several computers, such as a cloud ser- vice. The nwnitoring device may comprise a display device orindicating device for presenting information for a user.
    According to an embodiment, the reference data deter-mined on the basis of the design model is verified before in-Thus, putting it to the monitoring device. the computed refer- ence data is compared. to results of experimental laboratory tests made in a test stand. Thanks to this embodiment, accuracyof the reference data may be further improved since it is pos-sible to adjust the reference data on the basis of results of the comparison.
    According to an embodiment, the monitoring device com- prises at least one health indicating device. Thus, the moni- toring device may comprise one or more display devices, visualindicators or any other suitable indicating devices for inform-ing the determined operating health for the operator or mainte-nance personnel.
    According to an embodiment, the monitoring device com-prises at least one health data base or memory device allowingstoring of data relating the determined operating health, oper-ating condition values and measuring results. The stored datamay be analyzed whenever needed and desired reports and docu-ments may be produced.
    According to an embodiment, the nwnitoring device isconfigured to recognize operating style of the operator of amachine comprising the nwnitored pressure medium operated de-vice. The monitoring device is configured to analyze the meas-uring data and based on that decide the operating style of theoperator. The monitoring device may comprise predeterminedcharacterizing features for different operating styles in orderto classify the monitored use situation. Thanks to this embodi-ment, operator related differences in the operating style maybe taken into account when determining the operating health.
    According to an embodiment, the nwnitoring device isconfigured to recognize operating style of the operator. Themonitoring device may determine probability of failure on thebasis of the recognized operating style. The monitoring devicemay also estimate instant of time when the monitored pressuremedium operated device will failure if the same operating styleis continued. The estimation may be based on probability calcu-lation. When the monitoring device detects a personal operatingstyle of the operator, the device may perform a warning signalor næssage for the operator to inform the operator that the currently used operating' style is harmful and. will lead to failure after an estimated period of time. Thanks to this em- bodiment, the operator is provided with a feedback, which moti- vates the operator to change the current operating style. Theembodiment may also be utilized in training of operators.According to an embodiment, the nwnitoring device isprovided with a predetermined or estimated operating life de-termined for the monitored pressure medium operated device. Theset operating' life may be based. on calculation. and. analysiswherein the monitored device is used according to a predeter-in order to achieve mined range of operating parameters. Thus, the desired or optimal operating life, the pressure operateddevice needs to be used so that situations causing additionalloadings and fatigue are avoided. The set operating life may bea kind of ideal operating life and may be determined by meansof strength analysis.
    However, operating styles of the opera- tors vary, whereby the monitored. device may be subjected. to loadings caused by undesired or unexpected way of use. The mon- itoring device may record the situations causing additional loadings and fatigue, may inform the operator of the detectedharmful way of use, life. and. may determine an expected. operatingThe monitoring device may indicate on the basis of gath-ered data the expected operating life relative to the set de-sired operating life, which is based on optimal way of use of the monitored device. Thanks to this embodiment, the operator is provided with a feedback, which motivates the operator tochange the current operating style, to avoid situations causingextra loadings, and also to use defined operating parameters.According to an embodiment, the nwnitoring device isprovided with a predetermined or estimated operating life de-termined for the monitored pressure medium operated device. Themonitoring device may be arranged to monitor the pressure medi-um device for a limited period of time and may according to thegathered monitoring data estimate what will be an expected op-erating life of the nwnitored device. The disclosed solutionmay be implemented in situations where a new apparatus is com-posed and no previous loading history of the pressure mediumFurther, operated device is available. when the apparatus pro- vided with the pressure medium device is used in a new differ- ent use or application, a short-term testing period in the in-tended use position or application may be utilized to producean estimate of the expected operating life. The short-term mon-itoring or testing period may be sufficient to indicate feasi-bility of the monitored device for the intended use and appli-cation.
    Possibly, no further' measuring' and Inonitoring' during the operating life are needed. Thanks to this embodiment, fea-sibility of the pressure medium device for the intended purposemay be verified at an early phase of the operation. When no-ticed that the tested device will fail the set target value, itmay be substituted by another device.
    The above-disclosed embodiments can be combined toform suitable solutions provided with necessary features dis- closed.
    Brief description of the figuresSome embodiments are described in more detail in theaccompanying drawings, in which Figure l is a schematic diagram of a nwnitoring sys-tem, Figure 2 is a schematic diagram of processing measur-ing data, Figure 3 is schematic side view of a hydraulic deviceprovided with a monitoring device, and Figure 4 is a schematic side view of another monitor-ing system, wherein a hydraulic device is provided with measur-ing devices and is being monitored by means of an external mon-itoring device.
    For the sake of clarity, the figures show some embodi- ments of the disclosed solution in a simplified manner. In thefigures, like reference numerals identify like elements.Detailed description of some embodiments Figure l shows a system for monitoring operating health of a hydraulic device l, which may be a hydraulic actua- tor such as a hydraulic cylinder or hydraulic motor. Further, the hydraulic device may be a hydraulic pump or hydraulic accu- mulator, for example. The hydraulic device l is provided withone or more measuring devices 2 for measuring one or more phys-ical features during the use of the hydraulic device l. Thegathered and produced measuring data 3 is input to a monitoringdevice 4 by means of input means 5. The monitoring device 4 maybe located in connection with the monitored hydraulic device l,or it may be located external to the hydraulic device l. Themonitoring device 4 may comprise one or more processors 6 forexecuting one or more monitoring programs 7. The monitoring de-vice 4 may also comprise a filtering program or other type offiltering means 8 in order to determine significance of the in-Alternatively, put measuring data 3. the measuring device 2 may be provided with suitable filtering means, whereby the measur- ing data 3, which is input to the monitoring device 4, is al-ready filtered and is classified to be relevant.
    Further, at least one reference data 9 is also inputto the monitoring device 2 by means of input means 5. The ref-erence data 9 may comprise one or more reference values 9a or aor in addi- set of several numerical values, or alternatively, tion to, one or more reference model 9b, which may be a mathe- matical model or algorithm. The reference data 9 may be deter-mined already during the design process of the nwnitored hy-draulic device l. In order to determine the reference data 9only design data or model l0 of the hydraulic device l is need-ed. The reference data 9 may be generated by executing strengthanalysis ll for the design data. Typically a strength analysisprogram and computer are utilized.
    The monitoring device 4 may analyse the input measur-ing data 3 and may process an operating condition value l2,which indicates current situation of the hydraulic device l.The operating condition value l2 may indicate cumulated load-ing, wearing or operating cycles, for example. In order to de-termine operating health of the hydraulic device l the monitor-ing device 2 compares l3 the determined current operating con-dition value l2 with the input reference data 9 and indicates the current operating health l4 of the hydraulic device l. The 11 produced operating health l4 may indicate remaining operating cycles or mechanical loadings, or it may indicate degree of wear, for example. The monitoring device 4 may also comprise adisplay device l5 or other means for indicating the operatinghealth l4 for service personnel. Alternatively, or in additionto the display device 15 the monitoring device 4 may comprise adata communication device l6 for allowing a data connection be-tween the monitoring device 4 and at least one external device.or it Thus, the operating health l4 may be indicated visually, may be transmitted to a portable terminal device, for example.
    Figure 2 illustrates that the næasuring data may befiltered so that only significant measuring results are takeninto account when determining operating health of a hydraulicdevice.
    As it is shown in Figure 3, the hydraulic device l maybe a hydraulic cylinder. The hydraulic cylinder comprises aframe 17 inside which is at least one pressure space l8a, l8b,which is connected by means of feed means to a hydraulic systeml9. The hydraulic cylinder further comprise a jpiston. 20 ar-ranged inside a cylinder space of the frame l7 and is sealed bymeans of seals 2l against an inner surface of the cylinderThe piston 20 is arranged to move linearly according to l8b. space.pressure difference between the pressure spaces l8a, Gen-erated linear movement may be transmitted by means of a pistonrod 22 to a desired use.
    The hydraulic cylinder may be provided. with one ormore measuring devices. Pressure sensors 2a or transducers maybe arranged in connection with pressure ducts leading to thepressure spaces l8a, l8b, or pressure sensing devices may bearranged to measure pressure directly from the pressure spacesl8a, l8b. Measuring data of the pressure sensors 2a may be usedto determine pressures of the pressure spaces and caused me-chanical loadings to the construction. The hydraulic cylindermay also comprise one or more position næasuring devices 2b,whereby number of operating cycles of the hydraulic cylinder may be detected as well as amount of movement of the piston 20 12 and the seals 2l. The operating cycles may also be recognized by analysing the pressure data and pressure variations. Mechan-ical loading of the hydraulic cylinder may also be measured bymeans of one or more load sensors 2c such as strain gauges, pi-ezoelectric sensors or any other type of sensor allowing meas-urements of næchanical loadings. In addition to the mentionedsensors 2a - 2c other type of measuring devices may be used tomeasure physical features of the hydraulic cylinder. The meas-uring data may be transmitted from the sensors 2a - 2c to amonitoring device 4 mounted to the hydraulic cylinder. Alterna-tively, one or more sensors may be integrated to the monitoringdevice 4, whereby they may form a module.
    The monitoring device 4 may comprise mounting means 23for fastening the nwnitoring device 4 cn1 an outer surface ofthe frame l7 of the hydraulic cylinder. The mounting means 23may comprise fast coupling' means allowing' easy mounting anddismounting of the monitoring device 4. The monitoring devicemay comprise a body consisting of two halves or several bodyparts, which may be placed on an outer surface of a hydrauliccylinder and which halves or body parts are connectable to eachsuch. as screws. other by fastening means, Alternatively, the mounting means 23 may comprise a fastening band, which may beplaced. around. the frame l7 of the hydraulic cylinder. Themounting means 23 may be designed so that mounting to existingdevices is no modifications to hydraulic easy and requires their basic construction. The monitoring device 4 may be posi-tioned so that an indicating device l5 is visible. The monitor-ing device 4 may transmit the nwnitoring data and results bymeans of a data communication unit l6 to an electrical terminaldevice 24 or to a data network comprising one or more serversor computers.
    In Figure 3 the measuring data may be transmitted fromthe measuring devices 2a - 2c through wired or wireless data transmission to the monitoring device 4. Further, the data com- munication between the monitoring device 4 and the external de- vices 24 may also be wired or wireless. The wireless data com- 13 munication means may utilize Bluetooth, radio signals, WiFi or RFID, for example.
    Figure 4 discloses another monitoring device 4, whichis located external to a hydraulic device l being monitored.The hydraulic device l may correspond to the hydraulic cylinderof Figure 3 and may be provided with one or more several meas-uring devices 2a - 2c. Measuring data of the measuring devices2a - 2c may be transmitted to a data communication device I6,which may transmit the data to the external monitoring device4. Alternatively, the measuring devices 2a - 2c may be providedwith data transmission means of their own, whereby næasuringdata may be transmitted directly from the measuring devices 2a- 2c to the monitoring device 4. The data communication may bewired or wireless. The wireless data communication means may utilize Bluetooth, radio signals, WiFi or RFID, for example.Transmission of the næasuring data may be done periodically,continuously or according to a separate request.
    In Figure 4 the nwnitoring device 4 may be a nwbileelectrical terminal device such as a laptop, tablet computer, smart phone, for example. Alternatively the monitoring device is a server or a set or several servers or computers. The moni-toring device may also be based on a cloud service. The moni-toring device 4 may transmit the monitoring data and results toan electrical terminal device 24 or to a data network compris-ing one or more servers or computers.
    Alternatively, the monitored device disclosed abovemay be a device operable by means of pressurized gas or other suitable fluid.
    The disclosed monitoring and the determined operatinghealth may be utilized at least in the following manner: a) to record load history of a monitored device, b) to determine or estimate number of load cycles to failure of a monitored component,C) to define a preventive maintenance schedule for the device being monitored, 14 d) to provide an estimation of remaining operating lifeof the pressure medium operated actuator or a spe- cific monitored component i.e. to estimate lifespan, e) to indicate exceed of the predetermined fatigue lim-it, Û to identify deterioration of a specific component,and g) to predict time to service and the extend of servicerequired.
    The drawings and the related description are only in- tended to illustrate the idea of the invention. In its details, the invention may vary within the scope of the claims.
    权利要求:
    Claims (13)
    [1] 1. A monitoring device for determining operating health of a pressure medium operated device (1) comprising:input means (5) for receiving measuring data (3) of atleast one næasuring device (2), which næasuring data (3) re- lates to at least one physical feature of the pressure mediumoperated device (1) during operation of the pressure medium op-erated device (1) being monitored; at least one reference data (9)(4); and wherein the monitoring device (4) (3) for input to the monitor-ing deviceis configured toprocess the received measuring data determining at least one operating condition value (12) of the current situa-tion; and the monitoring device (4) is configured to compare(13) the produced operating condition value (12) with the at least one input reference data (9) in order to determine the operating health (14) (l); of the pressure medium operated device characterized in thatreference data (9) is (ll) the input computed (10) using strength analysis executed for a design model of the pressure medium operated device (1).
    [2] 2. The device as claimed in claim 1, cl1arwacteær-ized in that the nwnitoring device (4) is provided with at least one data set comprising' reference data (9) based. on fatigue analysis calculation; andthe monitoring device (4) is configured to compare(13) the processed current operating condition value (13) with the reference data (9) of the fatigue analysis calculation.
    [3] 3. The device as claimed in claim 1 or 2, c11ar¿ac- terized in that 16 the monitoring device (4) comprises at least one pro- cessor (6) for executing at least one monitoring program (7) in the processor (6) and. is configured. to process the received measuring data (3) and perform the comparison (l3) with the in- put reference data (9).
    [4] 4. The device as claimed in any one or the preceding claimslto 3, characterized in thatthe reference data (9) is determined by means of FE- analysis (Finite Element Analysis).
    [5] 5. The device as claimed in any one or the preceding claimslto 4, characterized in thatthe monitoring device (4) (14) is configured to determinethe operating health of the monitored pressure medium op-erated device (l) by monitoring the operating life of one sin-gle critical component of the monitored pressure medium operat- ed device (l).
    [6] 6. The device as claimed in any one or the preceding claimslto 5, characterized in thatthe input reference data (9) is determined by fatigue analysis and comprises at least one fatigue limit. claimed
    [7] 7. The device as in any one the preceding claimslto 6, characterized in thatthe input reference data (9) comprises maximum total amount of operating cycles defined for the associated pressure medium operated device (l) or a critical single component of the pressure medium operated device (l). claimed
    [8] 8. The device as in any one the preceding claims l to 7, characterized in that the monitoring device (4) comprises filtering means for filtering input measuring data (3) according to a predeter- mined control strategy and is configured to classify the input 17 into at least two categories having differ- (l4); measuring data (3)ent importance for the operating health andthe nwnitoring device (4) is configured to take intoaccount only significant measuring' data. when determining' theoperating condition value (12).
    [9] 9. The device as claimed in any one the preceding claims l to 8, characterized in thatthe pressure mediunl operated. device (l) being moni-tored is a hydraulic cylinder. claimed
    [10] 10. l0. The device as in any one the preceding claimslto 9, characterized in thatthe nwnitoring device (4) is located at the pressuremedium operated device (l) being monitored.
    [11] 11. ll. The device as claimed. in any one the preceding claims l to 9, characterized in thatthe nwnitoring device (4) is located external to thepressure medium operated device (l) being monitored.
    [12] 12. l2. A. method for determining' operating' health of apressure medium operated device, the method comprising:measuring by means of at least one næasuring device(2) at least one physical feature of the pressure medium oper-ated device (l)(l);inputting measuring data (3)(4);determining in the monitoring device (4) (12) during operation of the pressure medium operat-ed deviceto at least one monitor-ing deviceat least oneoperating condition value on the basis of the received(3); inputting reference data (9) measuring datato the monitoring device (4); and 18 (l3) in the monitoring device (4) (12) comparing the pro-with the input reference (14) duced operating condition value data (9) in order to determine the operating health of the pressure medium operated device (l);cl1a1fa.ct.er iz ecí byby using a (l0) of the determining' the input reference data (9) strength analysis (ll) executed for a design model pressure medium operated device (l).
    [13] 13. l3. The method according to claim l2, cl1arwacteær-i_ze<í by comparing the reference data (9) computed on the basis of the design model (l0), before inputting to the nwnitoring (4), a test stand; device to results of experimental laboratory tests made inandadjusting the reference data (9) on the basis of the comparison.
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI20146077A|FI128394B|2014-12-09|2014-12-09|Monitoring device and method for determining operating health of pressure medium operated device|
    PCT/FI2015/050821|WO2016092150A1|2014-12-09|2015-11-25|Monitoring device and method for determining operating health of pressure medium operated device|
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