Computer servo control electric assisted bicycle comprehensive performance chassis testing machine

explain:

1、 Scope of application: This machine is used to simulate the riding environment test of electric assisted bicycles. The assembled finished vehicle is placed on the machine, fixed according to standards, and the safety device is adjusted. After setting the relevant parameters on the computer, the computer automatically executes the test.

2、 Reference standards:

GB17761-20 General Technical Conditions for Electric Bicycles 5.2.1, 5.2.4, 5.2.5, 5.2.6, 5.2.11; 6.2.1.2, 6.2.4; 6.2.5.2, 6.2.6, 6.2.11.1;

Test items corresponding to EN15194-2005 "Standard for Electric Bicycles" and GB17761-20 "General Technical Conditions for Electric Bicycles" or above

3、 Test content and method:

1. Experimental method:

a. The torque resistance T1 of the driving device roller can be set to 0-1000kg-cm, and the output torque resistance T2 of the test vehicle can be calculated.

b. Can detect and record the tire rotation speed of the test drive: N2 (RPM) and the rotation speed of the test roller N1 (RPM).

c. Can detect and record the voltage V/current A/power W of the simulated battery power input.

d. The test can be stopped when the battery voltage falls below the set value.

2. Assistive performance testing: Check if the electric vehicle does not use foot pedal force during driving. The electric vehicle will automatically cut off the power supply and stop the power supply. After reaching a certain speed, the electric vehicle will also automatically cut off the power supply to achieve the dual function of exercise and safety. When following the method described in EN15194-2009 4.2.4.2

During testing, the computer automatically makes the following records:

The control switch of the tested bicycle automatically records the speed of the electric vehicle at all times, and is judged by the maximum input speed not exceeding 6m/h. 1) Auxiliary power is only provided when the rider steps forward. During this test, the computer automatically starts the center axle of the tested bicycle and records the maximum speed motor current of the electric vehicle at all times. When the center axle rotates in the forward direction, the speed increases and the current increases. When the speed decreases, the current curve changes accordingly;

2) When the rider stops pedaling backwards, the auxiliary power must be cut off. If used in conjunction with the brake lever disconnect switch, the cutting distance cannot exceed 5M. If the brake lever disconnect switch is not used, it cannot exceed 2M. During this test, the computer automatically starts the central axis of the tested bicycle and records the motor current change curve of the electric vehicle and the distance traveled by the drum after stopping pedaling, and automatically judges whether it is qualified.

3. Computer prompt: When manually starting the pure electric assist mode, that is, when getting off on a flat road and pushing, the computer will manually start during this test

4、 Technical parameters:

1) Torque sensor capacity: 50 Nm

2) Nonlinear degree of torque sensor: ± 0.1% - ± 0.3% (F · S)

3) Repeatability of torque sensor: ± 0.1% - ± 0.2% (F · S)

4) Accuracy of torque sensor: ± 0.2% - ± 0.5% (F · S)

5) Torque sensor ambient temperature: 0 ℃ -40 ℃

6) Torque sensor frequency response: 100 μ s

7) Torque measurement accuracy: ± 1%

8) Output voltage: 0-48V, load current<20A

11) Cycling speed: 0-30km/hr, measurable

12) Speed measurement accuracy: ≤ 2%

13) Distance measurement accuracy: ≤ 2%

14) Control software: Labview Data saving method: Computer hard drive

15) Rear double drum diameter: Φ 220mm (± 10mm)

16) Power performance: 1.5kw electric servo control

17) Simulated damping force: 2kw electric servo control

18) Loading method: cushion pneumatic loading

19) Report generation method: The system automatically generates reports according to the user's format

5、 Construction requirements for testing equipment:

1) The diameter of the driving double roller of the equipment is 220mm (± 10mm).

2) The machine structure can withstand a load of 300kg.

3) It is necessary to ensure that the front and rear wheels of the test vehicle can be placed on the driving roller of the testing equipment.

6、 Mechanical and electrical requirements:

1) The detection equipment uses servo motors.

2) Using a digital ammeter (with a minimum readable value of 0.1A), the instantaneous current can reach 100A.

3) Use a digital voltmeter (with a minimum readable value of 0.1V) and a maximum voltage of 72V, mainly using 24V.

4) The control panel is equipped with an emergency stop button.

7、 Computer: Adopting the current mainstream configuration of branded machines

Operating System: It is the latest specialized electric vehicle comprehensive testing and testing machine testing software under WINDOWS XP. The software itself comes with detailed operating instructions, and a set of detailed operating instructions is randomly attached. Computers are compatible with networks such as OS/2, NOVELL, UNIX, WINDOWS NT, and multi-user. The operating system is compatible with various software packages compatible with PCs The testing software can automatically print various reports.

8、 Work environment:

The temperature is between 5 ℃ and 40 ℃, and the relative humidity is between 20% and 80% RH,

Power supply: 380V 50Hz 5kW

Nine Equipment details:

1) One host

2) One computer (including host and 17 "monitor)

3) Power supply provided by the user

4) A set of fixtures

5) One instruction manual

6) One certificate of conformity

7) One warranty card