CN110261136A - Electronic racing car dynamical system test and match test platform - Google Patents

Electronic racing car dynamical system test and match test platform Download PDF

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Publication number
CN110261136A
CN110261136A CN201910596275.9A CN201910596275A CN110261136A CN 110261136 A CN110261136 A CN 110261136A CN 201910596275 A CN201910596275 A CN 201910596275A CN 110261136 A CN110261136 A CN 110261136A
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CN
China
Prior art keywords
motor
racing car
magnetic powder
electric machine
dynamical system
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Pending
Application number
CN201910596275.9A
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Chinese (zh)
Inventor
田哲文
袁宇飞
邹晓楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Technology WUT
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Wuhan University of Technology WUT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan University of Technology WUT filed Critical Wuhan University of Technology WUT
Priority to CN201910596275.9A priority Critical patent/CN110261136A/en
Publication of CN110261136A publication Critical patent/CN110261136A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/007Wheeled or endless-tracked vehicles

Abstract

The invention discloses one kind to be related to electronic racing car dynamical system test and match test platform, by applying certain load running resistance suffered when driving on different road surfaces come simulating vehicle to dynamometer machine, magnetic powder brake applies of different sizes and consecutive variations torques to motor shaft by magnetic powder chain that itself is formed when being powered, and load of the simulating vehicle in actual travel and plays braking effect;Host computer is controlled by electric machine controller, is motor supply of electrical energy according to control instruction, is constantly changed output revolving speed and the torque of motor, simulate electronic racing car and travel in various road conditions.Testing stand has versatility, it can satisfy different model motor, when racing car parameter change, complete vehicle quality can be changed by host computer, mass center is high, the parameters such as radius of wheel, wheelspan, wheelbase, front face area, output control motor, magnetic powder dynamometer machine part change correspondingly, so that testing stand be made to have versatility.

Description

Electronic racing car dynamical system test and match test platform
Technical field
The present invention relates to a kind of electronic racing car dynamical system test and match test platforms, and in particular to can to electric efficiency, Motor control strategy is tested, and is simulated to the cross-country pavement of race course of electronic bar of Kazakhstan racing car, and dynamic property and course continuation mileage are carried out Testboard bay.
Background technique
The design of electronic bar of Kazakhstan racing car, which is researched and developed, needs to carry out a large amount of previous works, and the core of an electronic bar of Kazakhstan racing car Point it is its motor, selects suitable motor most important.The traveling road conditions of electronic bar of Kazakhstan racing car are sufficiently complex, and racing track has list Several road conditions of hump, shell-hole, mud pit, tire battle array, Block Road etc. ten, racing track individual pen length reach 3.5km.Obviously, this Under complicated driving conditions, off-line simulation has its limitation.Larger using real vehicle progress test job amount, efficiency is lower, therefore Real vehicle should not be directlyed adopt to be tested.
The bench test of motor can be used for carrying out power system of electric automobile matching scheme, motor control strategy, power The research of system reliability etc. is the important previous work of design research and development automobile.
And common electronic racing car experimental rig can not simply be adapted to electronic bar of Kazakhstan racing car, thus, how specific aim into Electronic bar of Kazakhstan racing car test of row and modulation, it is also necessary to carry out follow-up work.
Summary of the invention
The technical problem to be solved in the present invention is that a kind of electronic racing car dynamical system test and match test platform are provided, Electronic bar of Kazakhstan racing car motor performance test may be implemented, carry out the test such as electronic bar of Kazakhstan racing car dynamic property cruising ability.
The present invention adopts the following technical scheme that solve above-mentioned technical problem
A kind of electronic racing car dynamical system test and match test platform, it is characterised in that include at least two parts:
It is set to power battery pack on testing stand, motor, electric machine controller, coulomb sensor, torque rotary speed sensor, magnetic powder Brake;
And control cabinet, data collecting card and host computer are integrated in control cabinet, host computer is connect with data collecting card;
Motor, magnetic powder brake be in line coaxially is sequentially connected be arranged on testing stand, centre by torque rotary speed sensor with Mechanical driving device connection, also sets up the power battery pack to motor power supply, electric machine controller and power electric inside testing stand Coulomb sensor is set between the group of pond, for acquiring electric signal when motor operation;
Control cabinet is placed on the side of testing stand, passes through data collecting card and sensor each on testing stand and electric machine controller phase Connection;
The magnetic powder chain that magnetic powder brake is formed when being powered by itself is of different sizes and consecutive variations to apply to motor shaft Torque, load of the simulating vehicle in actual travel and plays braking effect;Host computer by electric machine controller into Row control is motor supply of electrical energy according to control instruction, constantly changes output revolving speed and the torque of motor, simulates electronic racing car It is travelled in various road conditions.
Further, motor output end is connect by shaft coupling with torque and speed probe, and torque rotary speed sensor is defeated Outlet is connected by shaft coupling with magnetic powder brake.
Further, the coupling part between torque rotary speed sensor and magnetic powder brake is reinforced using intermediate supports.
Further, the dtc signal and tach signal of torque rotary speed sensor acquisition motor output shaft, is supplied to data Capture card is for obtaining the output torque and revolving speed of motor.
Further, coulomb sensor is mounted between power battery pack and electric machine controller, for measuring voltage simultaneously And current signal, electricity consumption needed for motor under setting course continuation mileage is calculated, provides important ginseng to reasonably select power battery It examines.
Further, control cabinet also sets up display, signal regulating device, control switch, indicator light, and to the letter of acquisition It number is monitored in real time, controls and communicated between each sensor and electric machine controller, real time data is constantly acquired into the place that goes forward side by side Reason calculates the performance data of motor finally using host computer progress data analysis, and by the performance of the motor after calculating Data are used to carry out performance instruction to motor.
Further, the data collecting card is used to get up electric machine controller and the collected signal collection of sensor, Host computer is entered data into, can meet the dynamic property of electronic racing car for analyzing torque and the revolving speed of motor output and want It asks, and according to the input current and voltage of motor, calculates the specification of power battery required for electronic racing car;Meanwhile it can be with According to user demand, the imitated output quantity of load and throttle control signal, the operation of Control experiment platform are issued.
The electronic racing car dynamical system test of the present invention and match test platform working principle are as follows;
Host computer, which can issue, instructs the simulation output port of acquired board to export control signal to electric machine controller, directly Control motor operation is connect, also exportable signal gives magnetic powder brake loading simulation road load, while also detectable real-time control Whole system shows test result.The tach signal that analog input card can acquire sensor inputs to whole vehicle model in host computer Speed is calculated, and poor with reference speed and measurement speed work, as the input of PI, thus calculates the throttle amount for needing to change, it is real Existing speed model- following control.It adjusts magnetic powder brake load input in real time simultaneously, establishes road simulation system.
Compared with the existing technology, the invention has the advantages that motor not only may be implemented in electronic bar of Kazakhstan racing car motor experimental bench The test functions such as efficiency, motor control strategy can also simulate the cross-country pavement of race course of electronic bar of Kazakhstan racing car, by dynamometer machine Apply certain load and carry out simulating vehicle running resistance suffered when driving on different road surfaces, tests electronic bar of Kazakhstan racing car electricity Mechanomotive force and economy carry out dynamic property and course continuation mileage test, can preferably simulate the instant operating condition of vehicle, try Test that precision is higher, the Car design for after provides reference.Meanwhile testing stand has versatility, can satisfy different model electricity Machine when racing car parameter change, can pass through host computer and change complete vehicle quality, mass center is high, radius of wheel, wheelspan, wheelbase, front face area Etc. parameters, output control motor, magnetic powder dynamometer machine part change correspondingly, so that testing stand be made to have versatility.
Detailed description of the invention
Fig. 1 is the electronic racing car dynamical system test of the present invention and match test platform general arrangement explanatory diagram.
Fig. 2 is the stereoscopic schematic diagram of the electronic racing car dynamical system test of the present invention and match test platform.
In figure: 1. electric machine controllers, 2. motors, 3. shaft couplings, 4. torque rotary speed sensors, 5. intermediate supports, 6. Magnetic powder brake, 7. control cabinets, 8. power battery packs, 9. coulombs of sensors.
Specific embodiment
As shown in Figs. 1-2, the electronic racing car dynamical system test implemented according to the present invention and match test platform specifically include that For electronic bar breathe out the electric machine controller 1 of racing car, motor 2, power battery pack 8, torque rotary speed sensor 4, coulomb sensor 9, Magnetic powder brake 6, shaft coupling 3, control cabinet 7.
Electronic bar of Kazakhstan racing car motor 2 and electric machine controller 1 are mounted on one end of testing stand, and magnetic powder brake 6 is mounted on examination The other end of platform is tested, it is intermediate to be connected by mechanical driving device.Control cabinet 7 is placed on the side of testing stand, internal data Capture card is connected by signal wire with sensor each on testing stand and electric machine controller 1.
Specifically, the electric machine controller 1 is fixed on testing stand side by fastener, powered by power battery pack 8, electricity Machine controller output end is connected with motor 2.The motor 2 is mounted on testing stand surface, motor output shaft by motor support frame It is connected by shaft coupling 3 with 4 input shaft of torque rotary speed sensor.Electric machine controller 1 is instructed according to gear, throttle, brake etc., is Motor 2 is powered, to change torque and the revolving speed of motor output, controls starting operation, the advance and retreat speed, climbing power of electric vehicle The driving status such as degree simulate real vehicle driving scene.
The power battery pack 8 is to be located at test by the 63v lithium battery group of the ternary lithium battery monomer composition of 3.6V, 5Ah Space interior under platform.
The coulomb sensor 9 is installed between power battery pack 8 and electric machine controller 1, when running for acquiring motor 2 Voltage and current signals, and included chip and liquid crystal display can show that voltage, electric current, power, consumption electricity, battery are surplus The information such as remaining electricity, so that calculating electronic bar breathes out electricity consumption of the racing car under defined course continuation mileage, it is power battery pack Selection provides reference.
4 input shaft of torque rotary speed sensor is connected by shaft coupling 3 with 2 output shaft of motor, torque rotary speed sensor 4 Output end is connected by shaft coupling 3 with magnetic powder brake 6, since output end is too long, is reinforced using intermediate supports 5.Torque and turn Fast sensor 4 acquires torque and the tach signal of 2 output end of motor in real time, and serves data to the data in control cabinet and adopt Truck is used to analyze the power performance and speed ability of motor.
The magnetic powder brake 6 is placed in the testing stand other end, internal magnetic powder brake relative to electric machine controller 1 Controller is connect with the adjusting knob on control cabinet 7, so directly adjusts magnetic powders brake system by the adjusting knob on control cabinet 7 Loading moment, the actual condition of vehicle driving can be drawn up with Fast Modular.Meanwhile magnetic powder brake 6 can also pass through host computer Control signal is issued to be controlled.Water cooling plant is equipped with inside magnetic powder brake 6.
The electric machine controller 1, coulomb sensor 9, torque rotary speed sensor 4 connect control cabinet 7 by connection respectively In data collecting card.
In control cabinet 7 mainly include signal regulating device, data collecting card, computer, display and it is several switch and Indicator light.Wherein, it cooperates between signal regulating device, data collecting card and each sensor and electric machine controller logical The real time data that electronic bar is breathed out racing car motor is constantly acquired processing of going forward side by side, finally carries out data analysis using computer by news, A series of performance datas of motor are calculated, it is possible thereby to carry out performance instruction to motor.Wherein display and control switch with And indicator light is mounted on the control panel of control cabinet, data collecting card, computer and signal wire, power supply line are placed in control Inside cabinet.
The data collecting card is transmitted using USB data, 12-bit data acquisition resolution, sample rate 250KS/s, 8 tunnels Analog quantity voltage input, the output of 2 road analog quantity voltages, 12 railway digitals/O, 32 digit counters.The data collecting card of use is logical Road is respectively as follows: AI0- simulation input amount-acquisition torque signal;AI1- simulation input amount-acquisition tach signal;AI2- simulation input Amount-collection voltages signal;AI3- simulation input amount-acquisition current signal;AO0- imitated output quantity-transmission load signal;AO1- Imitated output quantity-acquisition throttle signal.
Bar breathing out racing car motor is controlled by electric machine controller 1, is 2 supply of electrical energy of motor, constantly according to control instruction Change output revolving speed and the torque of motor 2, electronic bar of Kazakhstan racing car of simulation travels in various road conditions.
Torque and speed probe 4 acquire the torque rotary speed signal of 2 output shaft of motor, are supplied to data collecting card and are used for To the torque rotary speed signal of motor, power performance and speed of the racing car motor under different loads operating condition are breathed out for analyzing electronic bar Performance.
Magnetic powder brake 6 applies size not to the transmission shaft on testing stand by the magnetic powder chain of itself formation when being powered With and consecutive variations torques, load of the simulating vehicle in actual travel and play braking effect.
Testing stand power battery pack 8 uses lithium-ion battery monomer, is composed by series-parallel mode, is testing stand Power supply.
The test to electric efficiency, motor control strategy may be implemented in this testing stand, while can be used for carrying out electronic bar The Road quality simulation test for breathing out racing car, by dynamometer machine apply certain load come simulating vehicle the institute when driving on different road surfaces The running resistance being subject to, tests electronic bar of Kazakhstan racing car motor power and economy, the Car design for after provide reference.On Position machine, which can issue, instructs the simulation output port of acquired board to export control signal to electric machine controller, directly controls motor Operation, also exportable signal gives magnetic powder tension controller loading simulation road load, while also detectable real-time control is entirely System shows test result.The revolving speed torque signal that analog input card can acquire sensor inputs to whole vehicle model meter in host computer Speed is calculated, and poor with reference speed and measurement speed work, as the input of PI, thus calculates the throttle amount for needing to change, realize Speed model- following control, while load input is adjusted in real time, establish road simulation system.Meanwhile testing stand has versatility, It can satisfy different model motor, when racing car parameter change, complete vehicle quality can be changed by host computer, mass center is high, radius of wheel, The parameters such as wheelspan, wheelbase, front face area, output control motor, magnetic powder dynamometer machine part change correspondingly, so that testing stand be made to have Versatility.
The present invention can also have other embodiments, all to use the same technical solution replaced or equivalent transformation is formed, It all falls within the scope of protection of present invention.

Claims (7)

1. a kind of electronic racing car dynamical system test and match test platform, it is characterised in that include at least two parts:
It is set to power battery pack on testing stand, motor, electric machine controller, coulomb sensor, torque rotary speed sensor, magnetic powder Brake;
And control cabinet, data collecting card and host computer are integrated in control cabinet, host computer is connect with data collecting card;
Motor, magnetic powder brake be in line coaxially is sequentially connected be arranged on testing stand, centre by torque rotary speed sensor with Mechanical driving device connection, also sets up the power battery pack to motor power supply, electric machine controller and power electric inside testing stand Coulomb sensor is set between the group of pond, for acquiring electric signal when motor operation;
Control cabinet is placed on the side of testing stand, passes through data collecting card and sensor each on testing stand and electric machine controller phase Connection;
The magnetic powder chain that magnetic powder brake is formed when being powered by itself is of different sizes and consecutive variations to apply to motor shaft Torque, load of the simulating vehicle in actual travel and plays braking effect;Host computer by electric machine controller into Row control is motor supply of electrical energy according to control instruction, constantly changes output revolving speed and the torque of motor, simulates electronic racing car It is travelled in various road conditions.
2. electronic racing car dynamical system test according to claim 1 and match test platform, it is characterised in that motor output End is connect by shaft coupling with torque and speed probe, and torque rotary speed sensor output end passes through shaft coupling and magnetic powder brake It is connected.
3. electronic racing car dynamical system test according to claim 1 and match test platform, it is characterised in that torque rotary speed Reinforced using intermediate supports coupling part between sensor and magnetic powder brake.
4. electronic racing car dynamical system test according to claim 1 and match test platform, it is characterised in that torque rotary speed Sensor acquires the dtc signal and tach signal of motor output shaft, is supplied to data collecting card and turns for obtaining the output of motor Square and revolving speed.
5. electronic racing car dynamical system test according to claim 1 and match test platform, it is characterised in that coulomb sensing Device is mounted between power battery pack and electric machine controller, for measuring voltage and current signals simultaneously, calculates setting continuation of the journey Electricity consumption needed for motor under mileage provides important references to reasonably select power battery.
6. electronic racing car dynamical system test according to claim 1 and match test platform, it is characterised in that control cabinet is also Display, signal regulating device, control switch, indicator light are set, and the signal of acquisition is monitored in real time, controls each biography It is communicated between sensor and electric machine controller, real time data is constantly acquired into processing of going forward side by side, finally carried out using host computer Data analysis calculates the performance data of motor, and the performance data of the motor after calculating is used to carry out performance tune to motor Religion.
7. electronic racing car dynamical system test according to claim 1 and match test platform, it is characterised in that the data Capture card enters data into host computer, uses for electric machine controller and the collected signal collection of sensor to get up The dynamic property requirement of electronic racing car can be met to analyze torque and the revolving speed of motor output, and according to the input current of motor and Voltage calculates the specification of power battery required for electronic racing car;Meanwhile according to user demand, load and throttle control are issued The imitated output quantity of signal processed, the operation of Control experiment platform.
CN201910596275.9A 2019-07-03 2019-07-03 Electronic racing car dynamical system test and match test platform Pending CN110261136A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110824370A (en) * 2019-10-25 2020-02-21 清华大学深圳国际研究生院 New energy automobile battery performance detection method
CN110864912A (en) * 2019-11-26 2020-03-06 安徽江淮汽车集团股份有限公司 Electric vehicle power assembly bench test system
CN111458153A (en) * 2020-03-24 2020-07-28 浙江飞碟汽车制造有限公司 Zero-torque rack of pure electric vehicle motor and testing method thereof
CN111596207A (en) * 2020-04-10 2020-08-28 杭州电子科技大学 Motor mechanical characteristic curve mapping device
CN113485298A (en) * 2021-07-15 2021-10-08 广州南洋理工职业学院 Electric automobile torque active distribution system control strategy test platform
CN113910916A (en) * 2020-07-07 2022-01-11 北京新能源汽车股份有限公司 Track mode control method and device, vehicle and equipment
CN114545840A (en) * 2022-03-09 2022-05-27 江苏新日电动车股份有限公司 Changeable intelligent control system of thing allies oneself with two wheeler

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09296834A (en) * 1996-05-01 1997-11-18 Mitsubishi Electric Corp Controller for magnetic powder type electromagnetic clutch for vehicle
JP2005043065A (en) * 2003-07-22 2005-02-17 Koyo Seiko Co Ltd Torque detector
CN104422886A (en) * 2013-09-10 2015-03-18 冉骏 Three-phase asynchronous motor testing system
CN205809253U (en) * 2016-06-16 2016-12-14 国网山东省电力公司威海供电公司 A kind of motor measurement apparatus
CN106226697A (en) * 2016-07-21 2016-12-14 淮阴工学院 A kind of electric vehicle motor integrated test system for performance
CN109855885A (en) * 2019-02-26 2019-06-07 武汉理工大学 Bar breathe out racing car transmission system performance test and match test platform
CN109932653A (en) * 2019-05-07 2019-06-25 洛阳智能农业装备研究院有限公司 A kind of motor experimental bench test macro

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09296834A (en) * 1996-05-01 1997-11-18 Mitsubishi Electric Corp Controller for magnetic powder type electromagnetic clutch for vehicle
JP2005043065A (en) * 2003-07-22 2005-02-17 Koyo Seiko Co Ltd Torque detector
CN104422886A (en) * 2013-09-10 2015-03-18 冉骏 Three-phase asynchronous motor testing system
CN205809253U (en) * 2016-06-16 2016-12-14 国网山东省电力公司威海供电公司 A kind of motor measurement apparatus
CN106226697A (en) * 2016-07-21 2016-12-14 淮阴工学院 A kind of electric vehicle motor integrated test system for performance
CN109855885A (en) * 2019-02-26 2019-06-07 武汉理工大学 Bar breathe out racing car transmission system performance test and match test platform
CN109932653A (en) * 2019-05-07 2019-06-25 洛阳智能农业装备研究院有限公司 A kind of motor experimental bench test macro

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110824370A (en) * 2019-10-25 2020-02-21 清华大学深圳国际研究生院 New energy automobile battery performance detection method
CN110864912A (en) * 2019-11-26 2020-03-06 安徽江淮汽车集团股份有限公司 Electric vehicle power assembly bench test system
CN110864912B (en) * 2019-11-26 2022-02-01 安徽江淮汽车集团股份有限公司 Electric vehicle power assembly bench test system
CN111458153A (en) * 2020-03-24 2020-07-28 浙江飞碟汽车制造有限公司 Zero-torque rack of pure electric vehicle motor and testing method thereof
CN111596207A (en) * 2020-04-10 2020-08-28 杭州电子科技大学 Motor mechanical characteristic curve mapping device
CN113910916A (en) * 2020-07-07 2022-01-11 北京新能源汽车股份有限公司 Track mode control method and device, vehicle and equipment
CN113910916B (en) * 2020-07-07 2023-07-21 北京新能源汽车股份有限公司 Track mode control method, device, vehicle and equipment
CN113485298A (en) * 2021-07-15 2021-10-08 广州南洋理工职业学院 Electric automobile torque active distribution system control strategy test platform
CN114545840A (en) * 2022-03-09 2022-05-27 江苏新日电动车股份有限公司 Changeable intelligent control system of thing allies oneself with two wheeler
CN114545840B (en) * 2022-03-09 2023-12-22 江苏新日电动车股份有限公司 Changeable intelligent control system of thing allies oneself with two wheeler

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