CN102901638B - Data acquisition system for automotive damping adjustment - Google Patents
Data acquisition system for automotive damping adjustment Download PDFInfo
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- CN102901638B CN102901638B CN201210361446.8A CN201210361446A CN102901638B CN 102901638 B CN102901638 B CN 102901638B CN 201210361446 A CN201210361446 A CN 201210361446A CN 102901638 B CN102901638 B CN 102901638B
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Abstract
The invention discloses a data acquisition system for automotive damping adjustment. The data acquisition system comprises an angular displacement sensor, an inertia sensing device, an acquisition card, a vehicle-mounted computer, a power supply, and a stroke signal acquisition part for a left-front wheel shock absorber, a right-front wheel shock absorber, a right-rear wheel shock absorber and a left-rear wheel shock absorber. According to the invention, the vehicle-mounted computer is connected with the USB (universal serial bus) interface of the acquisition card; the negative electrode of the power supply is electrically connected with the GND 1 of the acquisition card; the output end of a left-front wheel linear displacement sensor is electrically connected with the input interface AD 1 of the acquisition card; the output end of a right-front wheel linear displacement sensor is electrically connected with the input interface AD 2 of the acquisition card; the output end of a left-rear wheel linear displacement sensor is electrically connected with the input interface AD 3 of the acquisition card; the output end of a rear-front wheel linear displacement sensor is electrically connected with the input interface AD 4 of the acquisition card; the output end of the angular displacement sensor is electrically connected with the input interface AD 5 of the acquisition card; and the input end 1, the output end 2 and the output end 3 of the inertia sensing device are electrically connected with the input interface AD 6, the input interface AD 7 and the input interface AD 8 of the acquisition card in sequence.
Description
Technical field
The present invention relates to the acquisition system of Suspension movement stroke, vehicle roll angle and side acceleration in a kind of vehicle movement process, exactly, the present invention relates to a kind of car damping adjustment data acquisition system (DAS).
Background technology
Prior art discloses the method for adjustment vibroshock damping characteristic.The data collector for recording vibroshock stroke such as related in the vibroshock damping characteristic histogram analysis method (see " Analysis Techniques for Racecar Data Acquisition (racing car data collection and analysis technology) ") of Claude Rouelle, this vibroshock stroke recording device is extensively adopted (as FSAE fleet of University of Michigan) by external racing car team.In order to reach the object of record vibroshock stroke, by parallel with vibroshock for institute's displacement sensors.Institute's displacement sensors is connected with data collector, and this data collector can by the displacement signal of vibroshock with certain frequency collection and record.Here shortcoming is, this data collector lacks the sensor about vehicle body acceleration, inclination angle and steering wheel angle; Simultaneously data acquisition depends on Engine ECU, limited storage space more, causes restriction for the collection of multi-signal and expansion.
Summary of the invention
Technical matters to be solved by this invention overcomes prior art to exist and lack the problem that the sensor about vehicle body acceleration, inclination angle and steering wheel angle and the collection for multi-signal and expansion cause restriction, provides a kind of car damping adjustment data acquisition system (DAS).
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described car damping adjustment data acquisition system (DAS) comprises the near front wheel vibroshock stroke signal collecting part, off-front wheel vibroshock stroke signal collecting part, off hind wheel vibroshock stroke signal collecting part, left rear wheel vibroshock stroke signal collecting part, angular displacement sensor, Inertial Sensor Unit, capture card, vehicle-mounted computer and power supply.The USB interface of vehicle-mounted computer is connected with the usb line of capture card, the negative pole of power supply is connected with the GND1 interface electric wire of capture card, the output terminal of the near front wheel linear movement pick-up in the near front wheel vibroshock stroke signal collecting part is connected with the input interface AD1 electric wire of capture card, the output terminal of the off-front wheel linear movement pick-up in off-front wheel vibroshock stroke signal collecting part is connected with the input interface AD2 electric wire of capture card, the output terminal of the left rear wheel linear movement pick-up in left rear wheel vibroshock stroke signal collecting part is connected with the input interface AD3 electric wire of capture card, the output terminal of the off hind wheel linear movement pick-up in off hind wheel vibroshock stroke signal collecting part is connected with the input interface AD4 electric wire of capture card.The output terminal of angular displacement sensor is connected with the input interface AD5 electric wire of capture card.The output terminal 1 of Inertial Sensor Unit is connected with the input interface AD6 electric wire of capture card, and the output terminal 2 of Inertial Sensor Unit is connected with the input interface AD7 electric wire of capture card, and the output terminal 3 of Inertial Sensor Unit is connected with the input interface AD8 electric wire of capture card.Described the near front wheel vibroshock stroke signal collecting part includes the near front wheel bumper spring, the near front wheel vibroshock, the near front wheel stainless steel strut and the near front wheel L-type stainless steel strut.Off-front wheel vibroshock stroke signal collecting part includes off-front wheel bumper spring, off-front wheel vibroshock, off-front wheel stainless steel strut and off-front wheel L-type stainless steel strut.Off hind wheel vibroshock stroke signal collecting part includes off hind wheel bumper spring, off hind wheel vibroshock, off hind wheel stainless steel strut and off hind wheel L-type stainless steel strut.Left rear wheel vibroshock stroke signal collecting part includes left rear wheel bumper spring, left rear wheel vibroshock, left rear wheel stainless steel strut and left rear wheel L-type stainless steel strut.
The near front wheel vibroshock stroke signal collecting part, off-front wheel vibroshock stroke signal collecting part, off hind wheel vibroshock stroke signal collecting part are identical with left rear wheel vibroshock stroke signal collecting part structure, and namely the near front wheel bumper spring, off-front wheel bumper spring, off hind wheel bumper spring are identical with left rear wheel bumper spring structure.The near front wheel vibroshock, off-front wheel vibroshock, off hind wheel vibroshock are identical with left rear wheel shock absorber structure.The near front wheel linear movement pick-up, off-front wheel linear movement pick-up, off hind wheel linear movement pick-up are identical with left rear wheel linear movement pick-up structure.The near front wheel stainless steel strut, off-front wheel stainless steel strut, off hind wheel stainless steel strut are identical with left rear wheel stainless steel strut structure.The near front wheel L-type stainless steel strut, off-front wheel L-type stainless steel strut, off hind wheel L-type stainless steel strut are identical with left rear wheel L-type stainless steel strut structure.
The near front wheel stainless steel strut in the near front wheel vibroshock stroke signal collecting part is arranged on the external part of the piston rod in the near front wheel vibroshock, the near front wheel L-type stainless steel strut is arranged on the cylindrical shell of the near front wheel vibroshock, be sleeved on the cylindrical shell of the near front wheel vibroshock between the near front wheel stainless steel strut and the near front wheel L-type stainless steel strut by the near front wheel bumper spring compressed, the right-hand member of the near front wheel linear movement pick-up adopts and is bolted on the near front wheel L-type stainless steel strut, and the pull bar external part of the near front wheel linear movement pick-up is fixed on the near front wheel stainless steel strut.
Angular displacement sensor described in technical scheme adopts model to be the angular displacement sensor of WDD35D-4, the input shaft of angular displacement sensor inserts screw in the center pit of No. 1 synchronizing wheel and fixes, the shell of angular displacement sensor is fixed by screws on vehicle frame, No. 2 synchronizing wheels are enclosed within steering gear steering column tube screwing and fix, No. 1 synchronizing wheel is connected by tooth form synchronous belt with No. 2 synchronizing wheels, and No. 1 synchronizing wheel is parallel with the axis of rotation of No. 2 synchronizing wheels.
Inertial Sensor Unit described in technical scheme adopts model to be the 3-axis acceleration sensor of ADXL335, and Inertial Sensor Unit is fixed on Location of Mass Center of Automobiles.
Capture card described in technical scheme adopts model to be the Multifunctional USB data acquisition card of MPS-010602.
Compared with prior art the invention has the beneficial effects as follows:
1. the proposition of car damping adjustment data acquisition system (DAS) technical scheme of the present invention, by means of the movement travel of displacement transducer record vibroshock.Directly can draw the movement velocity of vibroshock by using vehicle-mounted computer to differentiate to displacement signal, Data support can be provided for follow-up vibroshock damping adjustment thus.
2. the Inertial Sensor Unit adopted in car damping adjustment data acquisition system (DAS) technical scheme of the present invention can determine space both direction acceleration a
y, a
zwith a direction rotational speed omega
x.At this
yrepresent the acceleration along automobile X direction, a
zrepresent the acceleration along automobile plotted.Correspondingly, ω
xrepresent the rotating speed around automotive ordinate axis.By to ω
xcarry out integral and calculating and namely can obtain the rotational angle theta of vehicle body around automotive ordinate axis
x.Record the side acceleration a of automobile when just can accomplish adjustment vibroshock damping characteristic thus simultaneously
ywith side rake angle θ
x, in this, as reference and the foundation of adjustment damping characteristic.Above-mentioned parameter simultaneously, as car body obliqueness etc. also can be applicable in other testing researches relevant with motor racing attitude.
3. the rotary angle transmitter adopted in car damping adjustment data acquisition system (DAS) technical scheme of the present invention is recorded in the corner of bearing circle in divertical motion.Especially can be applied in automobile race specific project, as the circle the ribbon in figure 8 project in the contest of FSAE university student's equation, can be used as and determine steering wheel angle, determine the speed of a motor vehicle and regulate vibroshock damping characteristic to obtain the foundation that the best enters the curved speed of a motor vehicle, steering wheel angle and damping characteristic.The research about setting up pilot model related fields can also be applied to the record of steering wheel angle in vehicle movement process simultaneously.
4. the capture card adopted in car damping adjustment data acquisition system (DAS) technical scheme of the present invention and vehicle-mounted computer carry out uniform data collection and record to multiple sensor.This kind of method can utilize vehicle-mounted computer to gather storage in a large number to data, and can carry out corresponding calculating simultaneously.The extensibility of capture card can be utilized to increase other associated sensor do not mentioned in this patent, and the expansion for testing research provides convenient simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is car damping adjustment data acquisition system (DAS) structure of the present invention composition schematic block diagram;
The axonometric projection graph that Fig. 2 is linear movement pick-up in the near front wheel vibroshock stroke signal collecting part, off-front wheel vibroshock stroke signal collecting part, off hind wheel vibroshock stroke signal collecting part and the left rear wheel vibroshock stroke signal collecting part that adopt in car damping adjustment data acquisition system (DAS) of the present invention and vibroshock assembly relation;
The breakdown axonometric projection graph that Fig. 3 is the angular displacement sensor that adopts in car damping adjustment data acquisition system (DAS) of the present invention and steering gear steering column tube assembly relation;
The schematic block diagram of various sensors, power supply, vehicle-mounted computer and capture card annexation of Fig. 4 for adopting in car damping adjustment data acquisition system (DAS) of the present invention.
In figure: 1. the near front wheel bumper spring, 2. the near front wheel vibroshock, 3. the near front wheel linear movement pick-up, 4. angular displacement sensor, 5. steering gear steering column tube, 6. steering gear, 7. Inertial Sensor Unit, 8. power circuit, 9. signal line, 10. capture card, 11. vehicle-mounted computers, 12. power supplys, 13. the near front wheel stainless steel struts, 14. the near front wheel L-type stainless steel struts, 15.1 number synchronizing wheel, 16.2 number synchronizing wheel, 17. tooth form synchronous belts, 18. the near front wheel vibroshock stroke signal collecting parts, 19. off-front wheel vibroshock stroke signal collecting parts, 20. off hind wheel vibroshock stroke signal collecting parts, 21. left rear wheel vibroshock stroke signal collecting parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is explained in detail:
Car damping adjustment data acquisition system (DAS) of the present invention is realize the signals collecting of vibroshock stroke, steering wheel angle, vehicle roll angle and side acceleration and storage, and car damping adjustment data acquisition system (DAS) is divided into vibroshock stroke signal collecting part, steering wheel angle signals collecting part, vehicle roll angle and side acceleration collecting part and signal data record totally four parts by function.
1. consult Fig. 1 and Fig. 2, vibroshock stroke signal collecting part comprises the near front wheel vibroshock stroke signal collecting part 18, off-front wheel vibroshock stroke signal collecting part 19, off hind wheel vibroshock stroke signal collecting part 20 and left rear wheel vibroshock stroke signal collecting part 21.The near front wheel vibroshock stroke signal collecting part 18 includes the near front wheel bumper spring 1, the near front wheel vibroshock 2, the near front wheel linear movement pick-up 3, the near front wheel stainless steel strut 13 and the near front wheel L-type stainless steel strut 14; Off-front wheel vibroshock stroke signal collecting part 19 includes off-front wheel bumper spring, off-front wheel vibroshock, off-front wheel linear movement pick-up, off-front wheel stainless steel strut and off-front wheel L-type stainless steel strut; Off hind wheel vibroshock stroke signal collecting part 20 includes off hind wheel bumper spring, off hind wheel vibroshock, off hind wheel linear movement pick-up, off hind wheel stainless steel strut and off hind wheel L-type stainless steel strut; Left rear wheel vibroshock stroke signal collecting part 21 includes left rear wheel bumper spring, left rear wheel vibroshock, left rear wheel linear movement pick-up, left rear wheel stainless steel strut and left rear wheel L-type stainless steel strut.The near front wheel vibroshock stroke signal collecting part 18, off-front wheel vibroshock stroke signal collecting part 19, off hind wheel vibroshock stroke signal collecting part 20 are identical with left rear wheel vibroshock stroke signal collecting part 21 structure, and namely the near front wheel bumper spring 1, off-front wheel bumper spring, off hind wheel bumper spring are identical with left rear wheel bumper spring structure; The near front wheel vibroshock 2, off-front wheel vibroshock, off hind wheel vibroshock are identical with left rear wheel shock absorber structure; The near front wheel linear movement pick-up 3, off-front wheel linear movement pick-up, off hind wheel linear movement pick-up are identical with left rear wheel linear movement pick-up structure; The near front wheel stainless steel strut 13, off-front wheel stainless steel strut, off hind wheel stainless steel strut are identical with left rear wheel stainless steel strut structure; The near front wheel L-type stainless steel strut 14, off-front wheel L-type stainless steel strut, off hind wheel L-type stainless steel strut are identical with left rear wheel L-type stainless steel strut structure.
The vibration damper with adjustable damping using model to be CANE CREEK-C7820 in embodiment, rice bright 75mm stroke linear displacement transducer.The near front wheel stainless steel strut 13 in the near front wheel vibroshock stroke signal collecting part 18 is arranged on the external part of the piston rod in the near front wheel vibroshock 2, the near front wheel L-type stainless steel strut 14 is arranged on cylinder (cylinder) body being provided with piston of the near front wheel vibroshock 2, the near front wheel stainless steel strut 13 and the near front wheel L-type stainless steel strut 14 are fixed by by the near front wheel bumper spring 1 stretching compressed, exactly, be sleeved on the cylindrical shell of the near front wheel vibroshock 2 between the near front wheel stainless steel strut 13 and the near front wheel L-type stainless steel strut 14 by the near front wheel bumper spring 1 compressed, be connected with the right side contact of the near front wheel stainless steel strut 13 by the left side of the near front wheel bumper spring 1 compressed, be connected with the left side contact of the near front wheel L-type stainless steel strut 14 by the right side of the near front wheel bumper spring 1 compressed.The housing right-hand member of the installation piston of the near front wheel linear movement pick-up 3 adopts and is bolted on the near front wheel L-type stainless steel strut 14, and the pull bar external part of the near front wheel linear movement pick-up 3 is fixed on the near front wheel stainless steel strut 13 by nut.Therefore, the pull bar external part of the near front wheel linear movement pick-up 3 can be retracted in company with the compression of the near front wheel vibroshock 2 and resilience and stretch out, and exports the displacement signal of the near front wheel vibroshock 2 with this near front wheel linear movement pick-up 3.The installation relation of each parts in the installation relation of off-front wheel vibroshock stroke signal collecting part 19, off hind wheel vibroshock stroke signal collecting part 20 and each parts in left rear wheel vibroshock stroke signal collecting part 21 and the near front wheel vibroshock stroke signal collecting part 18 is identical; Off-front wheel vibroshock stroke signal collecting part 19, off hind wheel vibroshock stroke signal collecting part 20 and the function of left rear wheel vibroshock stroke signal collecting part 21 and the function of the near front wheel vibroshock stroke signal collecting part 18 also identical, repeat no more.
2. consult Fig. 3, steering wheel angle signals collecting part mainly comprises steering gear, angular displacement sensor, synchronous pulley mechanism.Angular displacement sensor 4 in embodiment adopts model to be the angular displacement sensor of WDD35D-4.The input shaft of angular displacement sensor 4 inserts in the center pit of No. 1 synchronizing wheel 15, and both are fixed by screw-driving, and the shell of angular displacement sensor 4 is fixed by screws on vehicle frame not shown in FIG..No. 2 synchronizing wheels 16 are enclosed within steering gear steering column tube 5, and both are fixed by screw-driving.No. 1 synchronizing wheel 15 by being connected with its supporting tooth form synchronous belt 17, will ensure the parallel relation of No. 1 synchronizing wheel 15 and No. 2 synchronizing wheel 16 axis with No. 2 synchronizing wheels 16 simultaneously.Therefore, drive by the rotation of steering gear steering column tube 5 and No. 2 synchronizing wheels 16 axis of rotation walking wheel 15 and angular displacement sensor 4 with No. 1, thus angular displacement sensor 4 exports the angular signal of steering gear steering column tube 5.
3. vehicle roll angle and side acceleration collecting part mainly comprise Inertial Sensor Unit 7.This Inertial Sensor Unit 7 is fixed on Location of Mass Center of Automobiles.The transverse axis of vehicle body and the acceleration of the longitudinal axis and the vehicle body rotating speed around the longitudinal axis can be determined by this Inertial Sensor Unit 7.
4. consult Fig. 4, signal data recording section mainly comprises capture card 10, vehicle-mounted computer 11, power supply 12.Because each linear movement pick-up, angular displacement sensor 4, the Inertial Sensor Unit 7 that use in embodiment are all voltage output mode sensor, and input voltage is 5V, therefore can unify to use same capture card 10 to carry out signals collecting, and the unified 5V power supply that uses is powered.As shown in FIG., model is adopted to be the Multifunctional USB data acquisition card of MPS-010602 in embodiment.The positive pole of the near front wheel linear movement pick-up 3, off-front wheel linear movement pick-up, left rear wheel linear movement pick-up and off hind wheel linear movement pick-up connects the positive pole of power supply 12, and the negative pole of the near front wheel linear movement pick-up 3, off-front wheel linear movement pick-up, left rear wheel linear movement pick-up and off hind wheel linear movement pick-up connects the negative pole of power supply 12; The output terminal of the near front wheel linear movement pick-up 3, off-front wheel linear movement pick-up, left rear wheel linear movement pick-up and off hind wheel linear movement pick-up is connected with input interface AD4 electric wire with input interface AD1, the input interface AD2 of capture card 10, input interface AD3 successively.The positive pole of bearing circle angular displacement sensor 4 is connected with the positive electrical wire of power supply 12, and the negative pole of bearing circle angular displacement sensor 4 is connected with the negative electrical wire of power supply 12, and the output terminal of bearing circle angular displacement sensor 4 is connected with the input interface AD5 electric wire of capture card 10.This example the 3-axis acceleration sensor that to use Inertial Sensor Unit 7 to be models be ADXL335, the positive pole of Inertial Sensor Unit 7 is connected with the positive electrical wire of power supply 12, Inertial Sensor Unit 7 negative pole is connected with the negative electrical wire of power supply 12, the output 1 of Inertial Sensor Unit 7 exports vertical acceleration signal, the output 2 of Inertial Sensor Unit 7 exports lateral acceleration signal, the output 3 of Inertial Sensor Unit 7 exports the angular velocity signal around the longitudinal axis, the output 1 of Inertial Sensor Unit 7, export 2 with export 3 successively with the input interface AD6 of capture card 10, input interface AD7 is connected with input interface AD8 electric wire.The negative pole of power supply 12 is connected with the GND1 interface electric wire of capture card 10; The USB interface of capture card 10 is connected by USB data line with the USB interface of vehicle-mounted computer 11.Use in embodiment and solid state hard disc is housed and the notebook computer using WINDOWS XP system.Control for data acquisition need be realized by the control software design supporting with capture card 10 be arranged on vehicle-mounted computer 11.The collection to data, storage can be realized thus.
By carrying out to each vibroshock 2 displacement signal collected the movement velocity that differential calculation can draw each vibroshock 2, the inclination angle that integral and calculating can obtain the ground that the vehicle body longitudinal axis contacts relative to wheel is carried out to the angular velocity signal data around the longitudinal axis that Inertial Sensor Unit 7 collects.
Claims (4)
1. a car damping adjustment data acquisition system (DAS), described car damping adjustment data acquisition system (DAS) comprises the near front wheel vibroshock stroke signal collecting part (18), off-front wheel vibroshock stroke signal collecting part (19), off hind wheel vibroshock stroke signal collecting part (20), left rear wheel vibroshock stroke signal collecting part (21), angular displacement sensor (4), Inertial Sensor Unit (7), capture card (10), vehicle-mounted computer (11) and power supply (12); the USB interface of vehicle-mounted computer (11) is connected with the usb line of capture card (10), the negative pole of power supply (12) is connected with the GND1 interface electric wire of capture card (10), the output terminal of the near front wheel linear movement pick-up (3) in the near front wheel vibroshock stroke signal collecting part (18) is connected with the input interface AD1 electric wire of capture card (10), the output terminal of the off-front wheel linear movement pick-up in off-front wheel vibroshock stroke signal collecting part (19) is connected with the input interface AD2 electric wire of capture card (10), the output terminal of the left rear wheel linear movement pick-up in left rear wheel vibroshock stroke signal collecting part (21) is connected with the input interface AD3 electric wire of capture card (10), the output terminal of the off hind wheel linear movement pick-up in off hind wheel vibroshock stroke signal collecting part (20) is connected with the input interface AD4 electric wire of capture card (10), the output terminal of angular displacement sensor (4) is connected with the input interface AD5 electric wire of capture card (10), the output terminal 1 of Inertial Sensor Unit (7) is connected with the input interface AD6 electric wire of capture card (10), the output terminal 2 of Inertial Sensor Unit (7) is connected with the input interface AD7 electric wire of capture card (10), and the output terminal 3 of Inertial Sensor Unit (7) is connected with the input interface AD8 electric wire of capture card (10), it is characterized in that, described the near front wheel vibroshock stroke signal collecting part (18) includes the near front wheel bumper spring (1), the near front wheel vibroshock (2), the near front wheel stainless steel strut (13) and the near front wheel L-type stainless steel strut (14), off-front wheel vibroshock stroke signal collecting part (19) includes off-front wheel bumper spring, off-front wheel vibroshock, off-front wheel stainless steel strut and off-front wheel L-type stainless steel strut, off hind wheel vibroshock stroke signal collecting part (20) includes off hind wheel bumper spring, off hind wheel vibroshock, off hind wheel stainless steel strut and off hind wheel L-type stainless steel strut, left rear wheel vibroshock stroke signal collecting part (21) includes left rear wheel bumper spring, left rear wheel vibroshock, left rear wheel stainless steel strut and left rear wheel L-type stainless steel strut,
The near front wheel vibroshock stroke signal collecting part (18), off-front wheel vibroshock stroke signal collecting part (19), off hind wheel vibroshock stroke signal collecting part (20) are identical with left rear wheel vibroshock stroke signal collecting part (21) structure, and namely the near front wheel bumper spring (1), off-front wheel bumper spring, off hind wheel bumper spring are identical with left rear wheel bumper spring structure; The near front wheel vibroshock (2), off-front wheel vibroshock, off hind wheel vibroshock are identical with left rear wheel shock absorber structure; The near front wheel linear movement pick-up (3), off-front wheel linear movement pick-up, off hind wheel linear movement pick-up are identical with left rear wheel linear movement pick-up structure; The near front wheel stainless steel strut (13), off-front wheel stainless steel strut, off hind wheel stainless steel strut are identical with left rear wheel stainless steel strut structure; The near front wheel L-type stainless steel strut (14), off-front wheel L-type stainless steel strut, off hind wheel L-type stainless steel strut are identical with left rear wheel L-type stainless steel strut structure;
The near front wheel stainless steel strut (13) in the near front wheel vibroshock stroke signal collecting part (18) is arranged on the external part of the piston rod in the near front wheel vibroshock (2), the near front wheel L-type stainless steel strut (14) is arranged on the cylindrical shell of the near front wheel vibroshock (2), be sleeved on the cylindrical shell of the near front wheel vibroshock (2) between the near front wheel stainless steel strut (13) and the near front wheel L-type stainless steel strut (14) by the near front wheel bumper spring (1) compressed, the right-hand member of the near front wheel linear movement pick-up (3) adopts and is bolted on the near front wheel L-type stainless steel strut (14), the pull bar external part of the near front wheel linear movement pick-up (3) is fixed on the near front wheel stainless steel strut (13).
2. according to car damping adjustment data acquisition system (DAS) according to claim 1, it is characterized in that, described angular displacement sensor (4) adopts model to be the angular displacement sensor of WDD35D-4, the input shaft of angular displacement sensor (4) inserts screw in the center pit of No. 1 synchronizing wheel (15) and fixes, the shell of angular displacement sensor (4) is fixed by screws on vehicle frame, No. 2 synchronizing wheels (16) are enclosed within steering gear steering column tube (5) screwing and fix, No. 1 synchronizing wheel (15) is connected by tooth form synchronous belt (17) with No. 2 synchronizing wheels (16), No. 1 synchronizing wheel (15) is parallel with the axis of rotation of No. 2 synchronizing wheels (16).
3. according to car damping adjustment data acquisition system (DAS) according to claim 1, it is characterized in that, described Inertial Sensor Unit (7) adopts model to be the 3-axis acceleration sensor of ADXL335, and Inertial Sensor Unit (7) is fixed on Location of Mass Center of Automobiles.
4. according to car damping adjustment data acquisition system (DAS) according to claim 1, it is characterized in that, described capture card (10) adopts model to be the Multifunctional USB data acquisition card of MPS-010602.
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|---|---|---|---|
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| CN102901638A (en) | 2013-01-30 |
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