The motor micro-torque detection test bench is mainly divided into hardware part and software part. The hardware part is coordinated by the cylinder, servo motor, servo card, acquisition card, industrial computer, etc. to coordinate the operation of the EPS motor to be tested. The software part mainly drives the servo and cylinder to work together, controls the operation of the equipment to complete the detection, and collects the data parameters such as the angle and the torque sensor output voltage from the acquisition card in real time, draws a chart report according to the data of each test, and calculates the loss torque of the product. Fluctuate the torque and calibrate the product for compliance.
Test Bench Hardware The hardware part of this test is mainly to control the coordinated action of the torque sensor and the motor and cylinder, and to collect data in real time, mainly including the following parts:
(1) Cylinder: Push the servo and the EPS motor keyway to be tested to the position before the test process begins.
(2) Servo motor: used to control the rotation of the EPS motor to be tested and feedback the angle.
(3) Acquisition card: used to collect various real-time parameters, including angle and torque. Use the NIPCI6280 capture card.
(4) Servo card: used to drive the servo motor to precisely control the motor running action.
Advantech PCI1240U (four-axis) servo card was selected.
The working principle of the hardware part is mainly based on the determined actions. The multi-function acquisition card is used for analog and digital signal input and output acquisition, and the servo card controls various motion states of the motor (different speed and direction).
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