CN101173878B - Static and dynamic acceleration testing device - Google Patents
Static and dynamic acceleration testing device Download PDFInfo
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- CN101173878B CN101173878B CN2007101710099A CN200710171009A CN101173878B CN 101173878 B CN101173878 B CN 101173878B CN 2007101710099 A CN2007101710099 A CN 2007101710099A CN 200710171009 A CN200710171009 A CN 200710171009A CN 101173878 B CN101173878 B CN 101173878B
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Abstract
The invention relates to a static and dynamic acceleration tester, comprising a computer, a motion controller, a static acceleration generator, a dynamic acceleration generator, and a portable braking-ability testing instrument, wherein, the static acceleration generator mainly comprises a stepping motor, a photoelectric encoder, and an angular platform; the dynamic acceleration generator mainly comprises a servomotor and a rotation platform. The invention has the advantages of static and dynamic testing method, convenient installation, simple and quick testing process, high degree of automation, and ability of satisfying measuring precision requirement of related national standard, and calculating, memorizing, inquiring and printing the test result.
Description
Technical field
The present invention relates to a kind of accelerating testing device, especially a kind of proving installation that is used for the static and dynamic acceleration of test vehicle.
Background technology
Develop rapidly along with communication, swift and violent the increasing of automobile pollution and the quality of vehicle braking performances directly has influence on traffic safety, thereby be main detecting element and the portable brake performance tester (being called for short road examination instrument) of development and production just arises at the historic moment with the acceleration transducer, and popularize and use.But because portable brake performance tester belongs to the product of compulsory verification, therefore static and dynamic acceleration proving installation correspondingly is just essential, and it can satisfy the needs of the production of road examination instrument, daily servicing calibration and annual test calibration.
At present, standard vibration machine is all adopted in the demarcation of acceleration transducer, the calibration steps of comparing with standard acceler, and this way still has big gap in nature to braking performance test.
According to the regulation among People's Republic of China's industry standards of public safety " portable brake performance tester " GA/T485-2004 of up-to-date enforcement, must include static acceleration test, centrifugal acceleration test for portable brake performance tester, repeatability error in the indicating value test, the test of resolving ability threshold and the isoparametric test of zero drift.
Therefore, the static and dynamic acceleration proving installation of development must be able to provide static and dynamic two kinds of metering systems.Promptly use the component of acceleration of gravity on different angle to carry out static test, the centripetal force acceleration that can utilize uniform circular motion to produce again carries out dynamic test.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of static and dynamic acceleration proving installation, this device possesses static state, dynamic two kinds of detection meanss, easy for installation, testing process is simply quick, the automaticity height can satisfy the measuring accuracy requirement of relevant national standard, and can carry out correlation computations to test result, storage, inquiry and printed report.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
A kind of static and dynamic acceleration proving installation comprises computing machine, motion control card, the static acceleration generator, dynamic acceleration generator, portable brake performance tester, be characterized in: the static acceleration generator is mainly by stepper motor, photoelectric encoder, and the angle platform constitutes; The dynamic acceleration generator is mainly by servomotor, and rotatable platform constitutes;
Computing machine sends corresponding motion control function signal to motion control card after selecting static state or detection of dynamic state:
When static angular is tested, motion control card is rotated through terminal strip control step motor, and photoelectric encoder obtains spin data, and data are returned to terminal strip and computing machine, final under the acting in conjunction of stepper motor and photoelectric encoder, state reaches desired angle; In rotation process, portable brake performance tester is periodically obtained the acceleration output of current acceleration sensor, and transmit by wireless signal transmitter, after the wireless signal receptacle received signal test data is returned to computing machine, computing machine refreshes and real-time video data constantly, when reaching required angle, data are calculated storage or print processing;
When dynamic rotary test, motion control card is controlled servomotor through terminal strip, and servomotor, moves with uniform velocity after arriving the angular velocity that sets by the accelerated mode accelerated motion of setting by the scrambler control motor that carries; In rotary course, portable brake performance tester is periodically obtained the acceleration output of current acceleration sensor, and transmit by wireless signal transmitter, after the wireless signal receptacle received signal test data is returned to computing machine, computing machine refreshes and real-time video data constantly, when reaching the requirement rotating speed, data are calculated storage or print processing.
The static acceleration generator also comprises angle bracket, rotating shaft, bearing, installing plate, angle rotating platform is by rotating shaft and the Bearing Installation upper end at angle bracket, shaft and the photoelectric encoder input shaft that the place connects stepper motor respectively stretched out at the rotating shaft two ends, and stepper motor and photoelectric encoder are fixed on the both sides of angle bracket respectively by installing plate; Place the acceleration transducer in the portable brake performance tester above the angle rotating platform.
The dynamic acceleration generator also comprises base plate, right angle gear, holder, transmission shaft, bearing, the right angle gusset, servomotor is fixed on by the right angle gusset below the base plate, and output shaft is connected with transmission shaft by the right angle gear of pair of meshing, transmission shaft by Bearing Installation in holder, the fixedly connected rotatable platform of its external part is placed portable brake performance tester above the rotatable platform.
The resolution of stepper motor is 0.036 °; The resolution of photoelectric encoder is 0.025 °.
The invention has the beneficial effects as follows:
The present invention can provide accurate, qualified, reliable measurement mechanism for dispatch from the factory the calibrating in year of requirement of calibrating and metrological service of portable brake performance tester according to the requirement of Chinese industry standard GA/T485-2004, it can be to fundamental error, the reproducibility error of acceleration transducer, resolving ability threshold and zero drift are effectively demarcated, and guarantee that braking test test data is accurate, reliable, credible.
This device possesses static state, dynamic two kinds of detection meanss, and easy for installation, testing process is simply quick, and the automaticity height can satisfy the measuring accuracy requirement of relevant national standard, and can carry out correlation computations to test result, storage, inquiry and printed report.
Description of drawings
Fig. 1 is the acceleration test schematic diagram;
Fig. 2 is a functional-block diagram of the present invention;
Fig. 3 is static acceleration generator architecture figure;
Fig. 4 is dynamic acceleration generator architecture figure.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Static test principle of the present invention:
Because when the sensor horizontal stationary, its accekeration that records is 0g with respect to ground.When sensor perturbations was placed, sensor was output as acceleration of gravity along the component on the sensor measurement axle, i.e. output of acceleration transducer and pitch angle sine function relation.Utilize this principle, we can obtain the accekeration of standard by the angle that changes acceleration transducer measurement axis and level.Requirement according to " portable brake tester " industry standard, select for use respectively ± eight interior test points of 90 degree, promptly ± 30 spend, ± 45 degree, ± 60 degree, ± 90 degree are test point, obtain its measured value by obtaining sensor in the static state output of these eight points, comparing, its measuring accuracy is judged with its corresponding theoretical acceleration value.
How the theory of testing obtains to demarcate accurately angle as can be seen is the key that we obtain the normal acceleration value.According to standard, the fundamental error that acceleration transducer is measured requires to ± 2%, so the fundamental error of measurement of angle is required and should wherein require the tightest to 30 degree point in ± 0.5%, be that the pitch angle fundamental error requires should be less than 0.15 °, and be worth each point accuracy requirement as total travel with this.Under the stable situation of level and test platform, the accurate acquisition of angle is by being realized by the stepper motor and the photoelectric encoder of computer control.The driving that we select stepper motor for use is 10000 steps/360 ° (resolution is 0.036 °); Photoelectric encoder is 14400 pulses/360 ° (resolving power is 0.025 °).Thereby, under the acting in conjunction of stepper motor and scrambler, by the motor movement of computer control the fundamental error that can realize the pitch angle fully less than 0.15 ° requirement.
Dynamic test principle of the present invention:
Static test can only realize sensor under static state ± acceleration analysis of 1g, thereby dynamically quicken when developing the examination of corresponding simulated automotive road and braking deceleration like the dynamic check device can come detecting sensor operate as normal be very necessary under motion state.
Having centripetal force when object moves in a circle and act on the object, produce certain centripetal acceleration, is the key that realizes dynamic test so produce the platform that can accurately control rotating speed.
The requirement of " portable brake tester " rower when dynamic test, should be able to measure acceleration transducer ± 1g, ± 1.25g, ± 1.5g, ± 1.75g, ± fundamental error during 2g and the measurement of resolving ability threshold.Wherein the resolving ability threshold be meant when the acceleration calibration value 9.81 the time, positive and negative variation 0.05m/s
2The time, it denys corresponding significant change that measurement value sensor has.
When object moves in a circle, have centripetal force and act on the object, produce certain centripetal acceleration (shown in Figure 1).Utilize this principle, by sensor being placed on the rotating disk of level, just can produce on the measuring sensor that certain centripetal force acts on sensor according to the running of certain speed by the Electric Machine Control rotating disk, thereby obtain to reflect accordingly that the signal of accekeration exports.
As shown in Figure 2, static and dynamic acceleration proving installation of the present invention comprises computing machine, motion control card, static acceleration generator, dynamic acceleration generator, portable brake performance tester 15.
The static acceleration generator is mainly by stepper motor 1, photoelectric encoder 2, and angle platform 4 constitutes; The dynamic acceleration generator is mainly by servomotor 8, and rotatable platform 14 constitutes.
Computing machine sends corresponding motion control function signal to motion control card after selecting static state or detection of dynamic state:
When static angular is tested, motion control card is rotated through terminal strip control step motor 1, and photoelectric encoder 2 obtains spin data, and data are returned to terminal strip and computing machine, final under the acting in conjunction of stepper motor 1 and photoelectric encoder 2, state reaches desired angle; In rotation process, portable brake performance tester 15 is periodically obtained the acceleration output of current acceleration sensor, and transmit by wireless signal transmitter, after the wireless signal receptacle received signal test data is returned to computing machine, computing machine refreshes and real-time video data constantly, when reaching required angle, data are calculated storage or print processing.
When dynamic rotary test, motion control card is through terminal strip control servomotor 8, and servomotor 8, moves with uniform velocity after arriving the angular velocity that sets by the accelerated mode accelerated motion of setting by the scrambler control motor that carries; In rotary course, portable brake performance tester 15 is periodically obtained the acceleration output of current acceleration sensor, and transmit by wireless signal transmitter, after the wireless signal receptacle received signal test data is returned to computing machine, computing machine refreshes and real-time video data constantly, when reaching the requirement rotating speed, data are calculated storage or print processing.
As shown in Figure 3, the static acceleration generator also comprises angle bracket 3, rotating shaft 6, bearing 7, installing plate 5, angle rotating platform 4 is installed in the upper end of angle bracket 3 by rotating shaft 6 and bearing 7, and shaft and photoelectric encoder 2 input shafts that the place connects stepper motor 1 are respectively stretched out at rotating shaft 6 two ends, and stepper motor 1 and photoelectric encoder 2 are fixed on the both sides of angle bracket 4 respectively by installing plate 5; The resolution of placing acceleration transducer 17 stepper motors 1 above the angle rotating platform 4 is 0.036 °; The resolution of photoelectric encoder 2 is 0.025 °.
As shown in Figure 4, the dynamic acceleration generator also comprises base plate 16, right angle gear 9, holder 13, transmission shaft 11, bearing 12, right angle gusset 10, servomotor 8 are fixed on below the base plate 16 by right angle gusset 10, the output shaft of servomotor 8 is connected with transmission shaft 11 by the right angle gear 9 of pair of meshing, transmission shaft 11 is installed in the holder 13 by bearing 12, and the fixedly connected rotatable platform 14 of its external part is placed portable brake performance tester 15 above the rotatable platform 14.
Claims (5)
1. static and dynamic acceleration proving installation, comprise computing machine, motion control card, the static acceleration generator, dynamic acceleration generator, portable brake performance tester (15), it is characterized in that, described static acceleration generator is mainly by stepper motor (1), photoelectric encoder (2), and angle rotating platform (4) constitutes; Described dynamic acceleration generator is mainly by servomotor (8), and rotatable platform (14) constitutes;
Described computing machine sends corresponding motion control function signal to motion control card after selecting static state or detection of dynamic state:
When static angular is tested, motion control card is rotated through terminal strip control step motor (1), photoelectric encoder (2) obtains spin data, and data are returned to terminal strip and computing machine, finally under the acting in conjunction of stepper motor (1) and photoelectric encoder (2), state reaches desired angle; In rotation process, portable brake performance tester is periodically obtained the acceleration output of current acceleration sensor (17), and transmit by wireless signal transmitter, after the wireless signal receptacle received signal test data is returned to computing machine, computing machine refreshes and real-time video data constantly, when reaching required angle, data are calculated storage or print processing;
When dynamic rotary test, motion control card is controlled servomotor (8) through terminal strip, and servomotor (8), moves with uniform velocity after arriving the angular velocity that sets by the accelerated mode accelerated motion of setting by the scrambler control motor that carries; In rotary course, portable brake performance tester (15) is periodically obtained the acceleration output of current acceleration sensor (17), and transmit by wireless signal transmitter, after the wireless signal receptacle received signal test data is returned to computing machine, computing machine refreshes and real-time video data constantly, when reaching the requirement rotating speed, data are calculated storage or print processing.
2. according to claim 1 quiet, dynamic acceleration testing device, it is characterized in that, described static acceleration generator also comprises angle bracket (3), rotating shaft (6), the bearing (7) that matches with rotating shaft, installing plate (5), angle rotating platform (4) is installed in the upper end of angle bracket (3) by rotating shaft (6) and the bearing (7) that matches with rotating shaft, output shaft and photoelectric encoder (2) input shaft that the place connects stepper motor (1) respectively stretched out at rotating shaft (6) two ends, and stepper motor (1) and photoelectric encoder (2) are fixed on the both sides of angle bracket (3) respectively by installing plate (5); Place acceleration transducer (17) above the angle rotating platform (4).
3. according to claim 1 quiet, dynamic acceleration testing device, it is characterized in that, described dynamic acceleration generator also comprises base plate (16), right angle gear (9), holder (13), transmission shaft (11), the bearing (12) that matches with transmission shaft, right angle gusset (10), servomotor (8) is fixed on below the base plate (16) by right angle gusset (10), output shaft is connected with transmission shaft (11) by the right angle gear (9) of pair of meshing, transmission shaft (11) is installed in the holder (13) by the bearing (12) that matches with transmission shaft, place portable brake performance tester (15) above the fixedly connected rotatable platform of its external part (14), rotatable platform (14).
4. static and dynamic acceleration proving installation according to claim 1 and 2 is characterized in that, the resolution of described stepper motor (1) is 0.036 °.
5. static and dynamic acceleration proving installation according to claim 1 and 2 is characterized in that, the resolution of described photoelectric encoder (2) is 0.025 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101710099A CN101173878B (en) | 2007-11-27 | 2007-11-27 | Static and dynamic acceleration testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101710099A CN101173878B (en) | 2007-11-27 | 2007-11-27 | Static and dynamic acceleration testing device |
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| CN101173878A CN101173878A (en) | 2008-05-07 |
| CN101173878B true CN101173878B (en) | 2010-06-02 |
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| CN104677647B (en) * | 2015-03-11 | 2017-03-22 | 吉林大学 | Brake performance tester calibrating device |
| CN106153310A (en) * | 2015-04-17 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of method of inspection and device |
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| JP2018077200A (en) * | 2016-11-11 | 2018-05-17 | ソニーセミコンダクタソリューションズ株式会社 | Signal processor, inertial sensor, acceleration measurement method, electronic apparatus and program |
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| CN110567731B (en) * | 2019-08-15 | 2021-06-04 | 吉林大学 | Double-rotation brake performance tester inspection bench |
| CN112684209B (en) * | 2019-10-18 | 2022-09-09 | 株洲中车时代电气股份有限公司 | Acceleration sensor testing device and method |
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