• 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:
    Apparatus for testing power- assisted steering gear in a motor vehicle has a pressure transducer (8) connectible in the hydraulic circuit of the steering gear, an angular displacement transmitter (21) for mounting directly on the steering wheel hub of the vehicle, and a steering spindle torque transducer (1) attachable to the rim of the steering wheel. These sensors (1, 8, 21) are connected to an electronic processing unit including an analogue-to- digital converter (6) for providing a digital pressure readout on a pressure indicator (7), and a differential amplifier (13) and comparator (14) for controlling the display of the steering wheel angular displacement reading produced by an up/down counter (22) in response to a difference signal representing the difference between a previously sensed pressure level stored by a sample-and- hold circuit (12) and an instantaneous pressure level obtained directly from the pressure transducer. <IMAGE>
    公开号:SU1537147A3
    申请号:SU813293149
    申请日:1981-05-20
    公开日:1990-01-15
    发明作者:Мадочаи Аттали；Келемен Иштван；Мураи Тибор；Тарнок Карой；РЕВЕС Ласло；Хозляйтер Имре；Раушнитц Петер
    申请人:Аутоипари Кутато Интезет (Инопредприятие)；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION The invention relates to a transport engineering, in particular, to devices for diagnostic testing of a steering system of automobiles.
    The purpose of the invention is to improve the quality of diagnostic testing.
    Fig, 1 shows the block diagram of the device; 2 shows a torque measurement sensor; on fig.Z sensor angular rotation of the steering shaft.
    The sensor 1 for measuring the steering shaft is connected to the input of the block 2 of the sensitive element of the moment level measurement, the outputs of which are connected to the block 3 of the diffraction indication of the moment and blocks 4 and 5 of the delay with different time delays that are connected through analog-digital converter 6 unit 7 digital pressure display
    A pressure sensor 8 is connected to another input of the analog-digital converter 6, which is connected to the converter 6 through a signal conditioning unit 9 and a low-pass filter 10.
    The signal conditioning unit 9 consists of an IC, which is stabilized with respect to impulse noise, protected from an error of the error, electrically matched with the unit of the measuring pressure sensor, an amplifier, which is switched to two different gain factors. The signal conditioning unit 9 is electrically connected via a switch 11 to a pressure sensor 8.
    0
    The output of the low-pass filter 10 is connected to a readout unit 12 and a differential amplifier 13, 5 connected to a comparator 14 and
    element OR 15. A switch 16 is connected to the readout block 12, and a switch is connected to the comparator 14
    17 measuring range. Element OR I5 is connected to the unit.
    18 memories and with switch
    19 signal level, and the memory side-box 18 is connected to the indication of the angular rotation of the steering shaft 20. Sensor 21 of the angular rotation of the steering shaft
    5 is connected to the block 22 accounts.
    The monitoring of the temperature of the oil in the hydraulic system of the controlled servo-controlled steering and the supplying electric signal, the already mentioned sensor 23 of the temperature of the device is connected to the measuring bridge and the comparator unit 24, and to the latter ,-. connected showing temperature or predominantly different temperature ranges of block 25 display temperature. A switch 26 is connected between the differential amplifier 13 and the comparator J4, which is connected to the block 2. A compensator 27 is installed between the counting unit 22 and the reading unit 12 and is connected to the comparator 14.
    A switch 28 is installed between the delay blocks 4 and 5 and the analog-to-digital converter 6, the switch 26 is connected to the steering wheel rotation sensor 28, and the switch
    0
    51
    A reader 1 7 - with a level 30 regulator of comparison.
    The torque measurement sensor is fixed using a clamp bar 31, to the side 32 of which and the fastening screw the rod 33 located relative to the crown of the steering wheel is screwed. On the cylindrical surface of the FOR rod 33, one end of the handle 36 of the housing 36 dynamometer, with the other end directed through spring-loaded plates 38 fitted to the guide axis 37 of the rod 33. In the initial position on the shoulder 39 of the rod 33, the guide-line 37 t is guided through the guide axis the reel 40 through its end surface 41. A spring 42 rests on the support surface 41 of the plate 40. The end side 41 of the plate 40 in the initial position simultaneously rests on the shoulder 43 of the orifice 44 of the housing 36. The screw spring 42 with its other end rests on the support surface 45, also plate 38, the opposite end face 46 of the plate 38 comes to stop on the inside face 47, screwed onto the body 36 of the nut 48. On the axis 37 between the plate 40 and the plate 38 there is a stop ring 49, h and the end sides 50 and 51 form the stop surfaces 52 for the plates 40 and 38. The length of the movable stop ring 49 limits the minimum length of the compressed spring 42. On the axis 37 of the rod 33 between the side 32 and the plate 38 there is a stop ring 53. in relation to the rod 33, the pin 55, which enters the groove 54 and is fixed in the hole of the housing 36, is provided. During actuation, the housing 36 moves in the axial direction on the rod 33 and this movement produces a measurement value. The mutual movement of both structural elements is measured by an electric pair of measuring elements 56, the fixed part 57 of which is fixed in the socket 58 of the rod 33 and made in the form of a slider rheostat, the connecting line 59 being led out by means of the clip476
    Lenny in the hollow space 60 connections.
    The angular rotation angle sensor 21 of FIG. 3 represents of the hub 63 fixed to the steering shaft with screws 61 and fixed in the cylindrical socket 62 with the quick-release tool. The outer surface 64, which ensures the positioning and fixation of the elastic clamping ring 65 of the fast-tightening device, is clamped in the cylindrical socket 62 of the steering wheel hub 63. The cylindrical surface 66 of the threaded rod 68 of the quick-clamping device 68 that presses the pressure plate 69 through its opening is fixedly fixed to the cylindrical surface 66 of the plate 70, the pressure 71 and the cylindrical 72 surface of which guide an elastic clamping ring which is compressed in the radial direction using the end surface 73 the pressure plate 69. On the pressure plate 69, sitting on the thread 67, is a push nut 74 provided with a handle 75.
    On the thread 67 of the cylindrical surface 66 there is a thread 76 carrying an electrical sensor.
    7 of the shaft rotation, and the two threaded elements are screwed into each other as far as they will go. On the shoulder 78 of the bearing shaft 77, a ball bearing 80 located on the axle of the shaft 79 is installed, the outer ring of which is fitted to the socket 81 of the supporting hub 82. The ball bearing 80 is fixed to the axle of the shaft by means of the fastening ring 83, in the bearing socket 81 - by means of the fastening rings 84.
    8, the hub 85 of the support hub 82 has a fixed part of an electric angular rotation sensor connected to the wire 86 of the rotating part, the coupling 87 connects the rotating part through a driver to the non-existent shaft 77. The support hub 82 has a support arm 88 which is made in the plane of the longitudinal cross section the shaft is rigid, and in the plane of the cross section it is articulated. The support arm 88 has a fastener in the form of an engaging washer 89, which can
    fasten to the driver’s cabin, preferably on the windscreen.
    The device works as follows.
    For measurement on the steering wheel, not shown) of the vehicle, the torque measurement sensor is fixed by means of the clamping screw, and with the help of a quick-clamping device — the sensor for measuring the angular rotation of the steering shaft,
    In the seat 62 of the wheel hub 63, it is fixed by means of a handle 75 of a quick-clamping device, a sensor 21 measuring the angular rotation of the steering shaft. An attachment washer 89 support; Shoulder 88, mounted on a carrier for the angular rotation sensor support hub 82, is fixed on the Boito windshield of the driver's cabin glass.
     When measuring, the steering wheel rim is rotated using a handle dynamometer provided on the body 36. When the rotating force is applied, the spring 42 of the dynamometer is compressed, the case of the dynamometer 36 moves along the rod of the dynamometer 33, compressing the spring 42 with a linear characteristic proportional to the path of movement. The sensing path of the pair of measuring elements 56 delivers an electrical output signal proportional to the path of motion, since the slider is attached to the dynamometer housing 36 by a slider-moves on a half-hole pega cfaTe 57 and thus the pair of force measurement elements supplies an electrical analog signal. The angle of rotation of the steering wheel is measured by the angular rotation sensor 21 so that the rotating part, the lead of which, through the coupling 87, is in the rotation-transmitting connection with the carrier shaft 77 and rotates with the steering wheel in comparison with the fixed part located on the support the sleeve 82, protected from rotation by means of the supporting arm 88, the supporting shaft 77 through screwed one into another and mutually fixed threads of the nut 76 and the shaft 67 is in a connection transmitting the rotational movement with the quick-clamping steering wheel isposobleniem.
    The sensor 21 of the angular rotation gives an analog electric signal at its output.
    When measuring the adjustable maximum steering pressure with a servo in a fixed state, the steering wheels of the vehicle or
    The action of the steering wheels tg the steering shaft of a car.
    5 From the output of the electrical output signal of the sensor 1 for measuring the angular momentum of the steering shaft. The electrical signal proportional to the exerted torque
    0 enters the input of the measuring unit 2 of the moment level sensor element. In the block, the analog signal passes through the input amplifier and rectifier, as well as through the circuit
    5 multiplication, adjustable in accordance with the diameter of the steering wheel, and falls after branching, on the one hand, through converting analog values into digital values
    0 continuous three-bit indication of torque. When measuring the maximum adjustable pressure of a steering with a servo, time and level switch 28
    5 moment connects the start of measurement control input of the analog-digital converter 6 to the time delay unit 5 with a longer delay. Occurs when magnified
    0 moment of the steering shaft to a predetermined value, an abrupt change in the output signal of the comparator 14 connected to the output side 2 triggers the internal time loop
    5 a time delay element with a longer delay until a change occurs during the adjusted delay time at the output. Upon expiration
    The Q time delay is applied via a time and level switch 28 to trigger a measurement pulse to the A / D converter 6- control input. An analog signal provided by block 8 of a pressure sensing element providing electrical output signals is supplied through block 9 of signal conditioning,
    which perceives low-level signals with a shifted zero point of pressure sensor blocks of various types and, after a corresponding variable switching of force through a corresponding output, supplies them to a low-pass filter 10 equipped with an amplifier unit adjusted by a pressure switch 11 to measure a large value range pressure filter, as well as a 10 low-pass filter that filters out oscillations created by a hydraulic circuit pump and arises in the measured electrical A signal to the measuring input of the analog-to-digital converter 6. At the end of the cycle of the analog-digital converter 6, the seven-digit display shows the amount of the adjustable maximum servo steering pressure in digital form.
    When measuring the hydraulic steering limitation with a servo drive, the stop wheels of the described limiting angle should be provided with appropriate thrust liners, then the steering wheel rim is rotated in the described manner using the handle 75 of the steering shaft torque measuring sensor 1 to the stop and the steering torque increases with monitoring the three-digit display to the prescribed value. When measuring the hydraulic control limitation, the time and torque level switch 28 is switched by a delay unit 4 connected to its input with a shorter delay time to the control trigger of the measurement of the input of the analog-digital converter 6. The measurement process differs only in the value that causes the start of the analog-digital converter 6 torque level of the steering shaft, as well as a different measurement delay from the measurement of the maximum regulated pressure.
    With a pump operating at a rotational speed specified in the course of a servo-controlled steering stroke, the read-holding reading unit 12 memorizes by operating the zero (compensating) switch 16.
    analogue signal of the reference voltage corresponding to the reference pressure values measured by the block 8 of the sensitive element of pressure measurement in the hydraulic steering circuit with servo drive, and then due to the pressure control set by block 11 of the signal conditioning and filter of the low frequencies directed to the read-holding current loop 12 prepared for the measurement input. When actuated, the zero (equalizing o) the switch 16 receives a polling command block diagram of a test polling, and then using a zero (leveling) the counter circuit is reset direct reverse bills to zero by switching off the zero (the alignment) of the switch block circuit 16 receives polling command removes the blocking signal. Subsequently, the signal of the reference voltage generated in this way remains at the input of the differential amplifier 13 of the pressure signal unchanged, while at the other input there appears a voltage signal corresponding to the pressure value that occurs during servo action when the steering wheel is turned. At the output of the differential amplifier 12 of the pressure signal, a proportional signal arises, which due to the switch 26 during this measurement, sends the comparator 14. A fixedly adjusted voltage level switch 17 is connected to the comparator input. When the steering wheel rotates in one direction, the voltage corresponding to the pressure value increases in comparison with the reference value and then reaches the value at the input of the comparator, and a pulse is first produced at the output, which is fed to the input of the compensator 27, after which the counter is quenched. At the same time, through the OR element 15, a pulse is recorded at the memory unit 18, which receives and holds the number of 22 pulses counted in the counting unit. A digital value appears on the block of angular turns of the steering shaft 20 connected to block 18
    eleven
    hydraulic backlash, expressed in degrees.
    Measurement of mechanical play is performed similarly.
    ten
    15
    权利要求:
    Claims (2)
    [1]
    1. A device for diagnostic testing of a steering system of automobiles, comprising electrically interconnected sensors for measuring pressure in a pressure hydraulic line of a system, a sensor for angular rotation of a steering shaft, mechanically connected to the steering shaft and fixed on a fixed part inside the driver's cabin, and a sensor for measuring the moment on the steering shaft, characterized in that, in order to improve the quality of the diagnostic system check jn, it is equipped with a block of the sensitive element of the torque level measurement, the input cat It is connected to the torque sensor, and the outputs - 25 with two parallel-connected delay blocks with different time delay values and with a digital display of torque, the first switch, whose inputs - 30 are connected to the outputs of the delay blocks, and the output is connected to one analog input a digital converter, the output of which is connected to a digital pressure display unit, electrically connected with each other and with a pressure sensor, a second switch connected to the amplifier, the output of which is first through the filter The frequency is connected to another 40 analog-to-digital converter input, a counting unit whose input is connected to a steering angle sensor, and outputs to an angular rotation memory unit, cd - 5 zenny to a digital display unit for angular rotation and to a 1537U712 circuit
    key, the outputs of which are connected to the comparator, switches with a reading unit connected to another input of the analog-digital converter and inputs of a differential amplifier, the output of which through a third switch is connected to the comparator, to the unit of the sensitive element of measuring the level of the torque level and to the signal sensor, measuring the steering wheel, the comparator is connected via the OR element to the unit for storing the angular rotation and the fourth switch, as well as to the switching circuit and the fifth breakers - comparing a level regulator.
    [2]
    2. The device according to p. Is distinguished by the fact that the torque measurement sensor is made in the form of a dynamometer mounted on the steering wheel rim, the sensitive element of which is fixed relative to the rim and made in the form of a handle located in the housing on which two stop surfaces are provided, which are supported spring-loaded / plates interacting with stops of the rod connected to the handle, on the rod and on the body are fixed one element each, perceiving mutual movement, and the steering angle sensor - in La is made with a rotating part mounted in a stationary part mounted on an olive hub mounted on a carrier shaft fixed by means of a removable device on a steering shaft, the rotating part is coupled to the carrier shaft by means of a coupling and the supporting hub is hinged in the plane of the steering wheel by means of a support arm, hinged on a fixed part of the driver’s cabin.
    2. The device according to p. Is distinguished by the fact that the torque measurement sensor is made in the form of a dynamometer mounted on the steering wheel rim, the sensitive element of which is fixed relative to the rim and made in the form of a handle located in the housing on which two stop surfaces are provided, which are supported spring-loaded / plates interacting with stops of the rod connected to the handle, on the rod and on the body are fixed one element each, perceiving mutual movement, and the steering angle sensor - in La is made with a rotating part mounted in a stationary part mounted on an olive hub mounted on a carrier shaft fixed by means of a removable device on a steering shaft, the rotating part is coupled to the carrier shaft by means of a coupling and the supporting hub is hinged in the plane of the steering wheel by means of a support arm, hinged on a fixed part of the driver’s cabin.
    Jj
    FIG. 2
    83
    类似技术:
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    同族专利:
    公开号 | 公开日
    DD159108A5|1983-02-16|
    RO84268B|1984-07-30|
    GB2079464A|1982-01-20|
    GB2079464B|1984-03-07|
    BG46603A3|1990-01-15|
    ATA206781A|1987-10-15|
    AT385849B|1988-05-25|
    PL231275A1|1982-01-18|
    RO84268A|1984-05-23|
    DE3119739A1|1982-04-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3805035A1|1988-02-18|1989-08-31|Weco Industrietechnik Gmbh|METHOD FOR ELIMINATING THE INFLUENCE OF THE STEERING GAME ON THE MEASUREMENT OR ADJUSTMENT OF THE FRONT WHEEL SINGLE TRACK IN MOTOR VEHICLES AND DEVICE FOR CARRYING OUT THE METHOD|
    JP2668235B2|1988-03-25|1997-10-27|富士重工業株式会社|Method for detecting abnormality in torsional torque signal of electric power steering device|
    DE4230359C1|1992-09-10|1994-01-27|Bayerische Motoren Werke Ag|Testing hydraulic actuator for steering rear wheels of motor vehicle - controlling operation of two two-way valves dependent upon sensor signal indicating actual adjustment path|
    AU706372B2|1997-04-25|1999-06-17|Kabushiki Kaisha Toyoda Jidoshokki Seisakusho|Mounting structure for wheel angle detector and rotation amount detector for vehicle wheel|
    WO2007131512A1|2006-05-11|2007-11-22|Semvac A/S|A vacuum toilet system and a method for controlling functions thereof|
    CN101339096B|2007-11-16|2010-12-08|江苏大学|Booster torquemoment determination method for heavy type transport vehicle electric power-assisted steering system|
    CN102207431A|2010-03-30|2011-10-05|上海通用汽车有限公司|System for simulating work environment of vehicular hydraulic power steering gear|
    CN105115730B|2015-09-08|2018-09-11|中国重汽集团济南动力有限公司|A kind of pure electric vehicle dynamical system testing stand and its test method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    HU126180A|HU183141B|1980-05-20|1980-05-20|Steering-gear test set for motor vehicle|
    HU126280A|HU183142B|1980-05-20|1980-05-20|Device,for testing power assisted steering unit of motor vehicle|
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