CN104316333A - Testing system for middle system in boosting bicycle - Google Patents
Testing system for middle system in boosting bicycle Download PDFInfo
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- CN104316333A CN104316333A CN201410647739.1A CN201410647739A CN104316333A CN 104316333 A CN104316333 A CN 104316333A CN 201410647739 A CN201410647739 A CN 201410647739A CN 104316333 A CN104316333 A CN 104316333A
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Abstract
The invention discloses a testing system for a middle system in a boosting bicycle. The testing system comprises an industrial personal computer and a testing system platform. The industrial personal computer is provided with Labview software. The testing system platform comprises a middle system installation base where the middle system is installed, a power system platform and a magnetic powder brake. A servo motor and a speed reducer are installed on the power system platform. The servo motor and the speed reducer are connected with a square sleeve through a torque rotating speed sensor, the square sleeve is connected with a middle shaft of the middle system, a chain wheel of the middle system is connected with a fluted disc through a chain, and the fluted disc is connected with the magnetic powder brake. A second torque rotating speed sensor is installed on the magnetic powder brake. The industrial personal computer is connected with the testing system platform and the middle system. According to the testing system, the testing efficiency of the middle system is improved, the performance of the middle system can be reflected on the whole, the testing structure is more accurate, and operation is easier.
Description
Technical field
The invention belongs to the field tests of the mid-system of moment, be specifically related to the automatization test system of the mid-system of a kind of moped.
Background technology
Moped in recent years, particularly lithium battery assisted electric bicycle is more and more subject to the favor of people, especially to configure the bicycle of the mid-system of moment, this moped system automatically can be gathered people's moment by bike, steps on the relevant informations such as frequency, bicycle speed and calculated by specific algorithm, thus control motor output power, neither feel tired when accomplishing that people rides, the object of taking exercises can be reached again.
A lot of company is had all to develop mid-system both at home and abroad at present, but the moment acquisition method of each company is not identical, precision is also different, but torque sensor in mid-system is particularly important again, domestic and international usually employing for various piece in mid-system is separately tested at present, motor adopts observing and controlling machine to carry out test and curve plotting, and the torque sensor in system generally adopts static torque measuring method, namely the output chain wheel of mid-system is fixed, pull force output shaft-axis is removed by dial torque wrench, apply moment of torsion, and in reading above comparison spanner and mid-system the output valve of torque sensor to verify whether the torque sensor in mid-system meets standard, this scheme needs people to apply moment of torsion for going, efficiency is lower, human factor is larger, be not suitable for the batch detection of built-in motor, and separately test can not react the overall performance of mid-system, therefore a set of unified test macro that can carry out automatic test to mid-system force square sensor is badly in need of.
Summary of the invention
The present invention seeks to: the test macro that the mid-system of a kind of moped is provided, the automatic test of batch can be carried out.
Technical scheme of the present invention is: the test macro of the mid-system of a kind of moped, comprise industrial computer and testing system platform that Labview software is installed, described testing system platform comprises the mid-system mount pad for installing mid-system, powertrain platform and magnetic powder brake, described powertrain platform is provided with servomotor and speed reduction unit, described servomotor and speed reduction unit rise cover by the first torque rotary speed sensor connection side, described Fang Sheng cover is connected with the axis of mid-system, the fluted disc that the chain wheel of described mid-system is connected with magnetic powder brake by chain connects, described magnetic powder brake is provided with the second torque rotary speed sensor, described industrial computer is connected with testing system platform and mid-system.
Further, described powertrain platform is connected with screw mandrel, described screw mandrel connection wire rod rotating disc.
Further, described servomotor is connected the first torque rotary speed sensor with speed reduction unit by the first shaft coupling, described first torque rotary speed sensor rises cover by the second shaft coupling connection side, described magnetic powder brake is by the 3rd shaft coupling and the second torque rotary speed sensor, and described second torque rotary speed sensor is connected with fluted disc by the 4th shaft coupling.
Further, described servomotor is connected with keyway by key with speed reduction unit.
Further, the Labview software of described industrial computer is by output voltage, the maximum current value of serial ports and DC programmable power supply Control on Communication DC programmable power supply.
Further, described industrial computer is communicated with testing system platform by data collecting card, and described data collecting card is communicated with program control loader by simulating signal, and described program control loader controls magnetic powder brake electric current.
The invention also discloses a kind of calibration steps of torque velocities sensor, comprise the steps:
(1) Electric Machine Control of mid-system is closed;
(2) load different torque values by magnetic powder brake, system can the value of the value of comparison second torque rotary speed sensor and the torque velocities sensor of mid-system, analyzes the precision of the torque velocities sensor of the mid-system of moment.
The invention also discloses a kind of mechanical characteristics of motor curve plotting method, comprise the steps:
(1) built-in motor controlling mid-system exports maximal rate;
(2) loading force of magnetic powder brake is regulated;
(3) read the torque value T of the first torque rotary speed sensor, tachometer value n, calculate built-in motor output power
out=
;
(4) read real-time voltage value U and the current value I of DC programmable power supply, obtaining built-in motor power input is Pin=U*I;
(5) efficiency eta=Pout/Pin of built-in motor is calculated;
(6) by the performance curve of multi-point sampling and least square fitting motor.
The invention also discloses a kind of ageing testing method of gear train of mid-system, comprise the steps:
Control built-in motor and export maximal rate;
Magnetic powder brake employing frequency is the sine wave offered load of 1HZ;
Motor, by slightly larger than rated voltage, the work of rated frequency bringing onto load, then works being slightly less than under rated voltage.
What the invention also discloses a kind of built-in motor of mid-system follows curve plotting method, comprises the steps:
Mid-system is set under automatic operation mode;
When mid-system middle controller detects moment of torsion and rotating speed, controller exports the torque value of 1:1 according to the torque-controlled motors obtained, and by multi-point sampling, draws out the torque curve of the first torque rotary speed sensor and the second torque rotary speed sensor.
Advantage of the present invention is: this test system structure is simple, can carry out multiple automated performance testing, avoid human factor to mid-system, and so test unifiedly on a test macro to carry out, make test structure more accurate.
The performance that this test macro can be tested comprises following five kinds:
1. the calibration of torque velocities sensor, precision calibration;
2. mechanical characteristics of motor Drawing of Curve;
3. Drawing of Curve followed by controller;
4. the burn-in test of gear train in mid-system;
5. simulated battery discharge curve, thus infer the course continuation mileage under different road conditions.
This system improves the testing efficiency of mid-system, and can reflect the performance of mid-system on the whole, test structure is more accurate, operates simpler.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation of the test macro of the mid-system of moped of the present invention;
Fig. 2 is the Principle of Communication block diagram of the test macro of the mid-system of moped of the present invention;
Fig. 3 is the mechanical characteristics of motor curve map of the test macro of the mid-system of moped of the present invention.
Wherein: 1, test board base plate, 2, mid-system mount pad, 3, Fang Sheng cover, 4, shaft coupling, 5, axis, 7, bearing, 9, shaft coupling, the 10, first torque rotary speed sensor, 11, powertrain platform, 12, shaft coupling, 13, speed reduction unit, 14, servomotor, 18, screw mandrel capstan, 20, screw mandrel, 22, magnetic powder brake, 23, shaft coupling, 25, the second torque rotary speed sensor, 26, shaft coupling, 30, fluted disc, 31, bearing, 34, chain, 36, mid-system, 37, holding screw, 38, chain wheel.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment also with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
Embodiment:
The test macro of the mid-system of moped mainly comprises control section and test board two parts, and control section mainly comprises the industrial computer, DC programmable power supply and the program control loader that are provided with Labview software, and test board is signal wiring part.
Test board comprises: the power section that test board base plate 1 is installed and loading section.
One, power section
Servomotor 14 is connected with keyway by key with speed reduction unit 13, be rigidly connected by shaft coupling 12 and the first torque rotary speed sensor 10 together again, first torque rotary speed sensor 10 is by shaft coupling 9 connection bearing 7, bearing 7 rises cover 3 by shaft coupling 4 connection side, the above part is unified is installed on powertrain platform 11, whether powertrain platform 11 by regulating screw mandrel capstan 18 under the drive of screw mandrel 20, can move forward and backward, overlap 3 be connected with mid-intrasystem axis 5 to regulate Fang Sheng.Fixed by holding screw 37 after regulating.
Above fundamental purpose regulates servomotor to be accurately connected with built-in motor axis, built-in motor axis is driven with the output reaching servomotor, simulate people by bike, and the output torque of servomotor, speed can be measured by the first torque rotary speed sensor 10.
Two, loading section
Mid-system 36 is arranged in mid-system mount pad 2, mid-system 36 chain wheel 38 is connected to fluted disc 30 by chain 34, fluted disc 30 is arranged in bearing 31 and is connected to the second torque rotary speed sensor 25 by shaft coupling 26, second torque rotary speed sensor 25 is by shaft coupling 23 and program control loader rigid connection, and program control loader can control the brake value size of magnetic powder brake 22.
Magnetic powder brake 22, can regulating load size as required as load simulation part, such as, simulate upward trend, load tuned up.
Control communication
Labview software is communicated with DC programmable power supply by serial ports, can output voltage, the maximum current value of control DC programmable power supply, and can read the real-time output voltage current value of DC programmable power supply.
Data collecting card is communicated with program control loader by simulating signal, the program control size of current be carried in by controlling magnetic powder brake, thus reaches the different load force of control.
Data acquisition, by two-way simulating signal, communicates with servomotor, can control output speed and the moment of torsion of servomotor respectively.
The torque signal that torque speed sensor exports is frequency signal, and rotating speed is a circle fixed pulse number signal, and data collecting card measures moment of torsion and rotating speed by the output frequency and umber of pulse gathering torque rotary speed sensor.
Labview software is communicated with mid-system by serial ports, thus reaches the object controlling built-in motor.
The test macro of the mid-system of this moment can carry out automated performance testing, at least comprises following five kinds:
1. the calibration of torque velocities sensor, precision calibration;
2. mechanical characteristics of motor Drawing of Curve;
3. Drawing of Curve followed by controller;
4. the burn-in test of gear train in mid-system;
5. simulated battery discharge curve, thus infer the course continuation mileage under different road conditions.
One, the calibration of torque velocities sensor, precision calibration
A) Electric Machine Control of mid-system is closed;
B) control servomotor at rotating speed 100RPM, moment of torsion exports maximum 100NM;
C) then control magnetic powder brake and load different torque values, the torque value of torque sensor is determined by the loading force of magnetic powder brake completely, and tachometer value is controlled by the rotating speed of servomotor;
D) different torque values is loaded by magnetic powder brake, system can the value of the value of comparison second torque rotary speed sensor and the torque speed sensor of mid-system, by organizing comparison, just can analyze the precision of the torque velocities sensor of the mid-system of moment more.
Two, mechanical characteristics of motor Drawing of Curve
A) control built-in motor and export maximal rate;
B) loading force of magnetic powder brake is regulated;
C) read the torque value T of the first torque rotary speed sensor, tachometer value n, calculate built-in motor output power
out=
;
D) read real-time voltage value U and the current value I of DC programmable power supply, obtaining built-in motor power input is Pin=U*I;
E) efficiency eta=Pout/Pin of built-in motor is calculated;
F) by multi-point sampling, then be illustrated in fig. 3 shown below by the performance curve that least square method can simulate motor.
Three, Drawing of Curve followed by controller
What controller followed that effect mainly tests the built-in motor of mid-system follows situation, and it is 1:1 that such as car load arranges the moment that people and motor export.Mid-system is set under automatic operation mode, when mid-system middle controller detects moment of torsion and rotating speed, controller exports the torque value of 1:1 according to the torque-controlled motors obtained, namely whole system adopts by multiple spot, draw out the torque curve of the first torque rotary speed sensor and the second torque rotary speed sensor, such as, 1s clock gathers the moment that a motor and people export respectively.These discrete points, by least square fitting out, are a complete curve.By comparison can analyze mid-system whether follow effect desirable.
Four, the burn-in test of gear train in mid-system
In mid-system, general motor exports and all just finally will export after a gearbox speed reduction, and the transmission life-span of gear case determines the quality of mid-system.Thus need to carry out burn-in test to the gear train in mid-system.
When doing burn-in test, general direct employing data acquisition card control built-in motor exports maximal rate, then adopts sine wave loading by magnetic powder brake.Sine wave freuqency is 1HZ, and this is close with people's frequency by bike, and load adopts rated power.Motor, works 48 hours after 48 hours by 1.1 times of rated voltages, the work of rated frequency bringing onto load under 0.9 times of rated voltage, operates 96 hours continuously altogether.
Five, simulated battery discharge curve, thus infer the course continuation mileage under different road conditions
Course continuation mileage is estimated, and can export the discharge curve of simulated battery by controlling programmable power supply, and constant volume electric discharge.Simulate different road conditions by magnetic powder brake, thus simulation is under different road conditions, the course continuation mileage of different capabilities battery.
This system improves the testing efficiency of mid-system, and can reflect the performance of mid-system on the whole by the test of above-mentioned five kinds of performances, test structure is more accurate, operates simpler.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (10)
1. the test macro of the mid-system of moped, comprise industrial computer and testing system platform that Labview software is installed, it is characterized in that, described testing system platform comprises the mid-system mount pad for installing mid-system, powertrain platform and magnetic powder brake, described powertrain platform is provided with servomotor and speed reduction unit, described servomotor and speed reduction unit rise cover by the first torque rotary speed sensor connection side, described Fang Sheng cover is connected with the axis of mid-system, the fluted disc that the chain wheel of described mid-system is connected with magnetic powder brake by chain connects, described magnetic powder brake is provided with the second torque rotary speed sensor, described industrial computer is connected with testing system platform and mid-system.
2. the test macro of the mid-system of moped according to claim 1, is characterized in that, described powertrain platform is connected with screw mandrel, described screw mandrel connection wire rod rotating disc.
3. the test macro of the mid-system of moped according to claim 1, it is characterized in that, described servomotor is connected the first torque rotary speed sensor with speed reduction unit by the first shaft coupling, described first torque rotary speed sensor rises cover by the second shaft coupling connection side, described magnetic powder brake is by the 3rd shaft coupling and the second torque rotary speed sensor, and described second torque rotary speed sensor is connected with fluted disc by the 4th shaft coupling.
4. the test macro of the mid-system of moped according to claim 1, is characterized in that, described servomotor is connected with keyway by key with speed reduction unit.
5. the test macro of the mid-system of moped according to claim 1, is characterized in that, the Labview software of described industrial computer is by output voltage, the maximum current value of serial ports and DC programmable power supply Control on Communication DC programmable power supply.
6. the test macro of the mid-system of moped according to claim 1, it is characterized in that, described industrial computer is communicated with testing system platform by data collecting card, described data collecting card is communicated with program control loader by simulating signal, and described program control loader controls magnetic powder brake electric current.
7. adopt the calibration steps of a kind of torque velocities sensor of the test macro of the mid-system of moped described in any one of claim 1-6, it is characterized in that, comprise the steps:
(1) Electric Machine Control of mid-system is closed;
(2) load different torque values by magnetic powder brake, system can the value of the value of comparison second torque rotary speed sensor and the torque velocities sensor of mid-system, analyzes the precision of the torque velocities sensor of the mid-system of moment.
8. adopt a kind of mechanical characteristics of motor curve plotting method of the test macro of the mid-system of moped described in any one of claim 1-6, it is characterized in that, comprise the steps:
(1) built-in motor controlling mid-system exports maximal rate;
(2) loading force of magnetic powder brake is regulated;
(3) read the torque value T of the first torque rotary speed sensor, tachometer value n, calculate built-in motor output power
out=
;
(4) read real-time voltage value U and the current value I of DC programmable power supply, obtaining built-in motor power input is Pin=U*I;
(5) calculate built-in motor efficiency eta=
;
(6) by the performance curve of multi-point sampling and least square fitting motor.
9. adopt the ageing testing method of the gear train of a kind of mid-system of the test macro of the mid-system of moped described in any one of claim 1-6, it is characterized in that, comprise the steps:
Control built-in motor and export maximal rate;
Magnetic powder brake employing frequency is the sine wave offered load of 1HZ;
Motor, by slightly larger than rated voltage, the work of rated frequency bringing onto load, then works being slightly less than under rated voltage.
10. what adopt the built-in motor of a kind of mid-system of the test macro of the mid-system of moped described in any one of claim 1-6 follows curve plotting method, it is characterized in that, comprises the steps:
Mid-system is set under automatic operation mode;
When mid-system middle controller detects moment of torsion and rotating speed, controller exports the torque value of 1:1 according to the torque-controlled motors obtained, and by multi-point sampling, draws out the torque curve of the first torque rotary speed sensor and the second torque rotary speed sensor.
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Effective date of registration: 20200417 Address after: 215000 room 3403, building 3, No. 888, Zhujiang South Road, Mudu Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: SUZHOU WANJIA ELECTRIC Co.,Ltd. Address before: 215021, 1355 international science and Technology Park, Jinji Lake Avenue, Suzhou Industrial Park, Jiangsu, two A310 Patentee before: SUZHOU TERGAR IOT TECHNOLOGY Co.,Ltd. |
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