The EPS (electric power steering) motor is the core driving unit of the car's electric power rotation system. Its performance is directly related to driving safety and driving experience. Relying on years of technical accumulation, AIP has launched a high-precision EPS motor test system that covers full-dimensional performance verification to ensure the reliability, stability, and efficiency of the motor under complex working conditions. The following is an analysis of the core items of EPS motor performance testing:

1. EPS motor basic performance test items

1. Insulation resistance test: detect the insulation performance of the winding, identify short circuit and leakage hazards, and ensure electrical safety.

2. DC resistance test: Accurately locate potential faults such as open circuits and short circuits through analysis of winding resistance value.

3. Surge test: Apply high voltage to detect the surge voltage strength of the winding, evaluate the leakage current, and ensure electromagnetic compatibility.

4. Inductance characteristic test: quantify the stator winding inductance value, optimize the electromagnetic design parameters, and improve the motor response efficiency.

5. No-load performance test: Determine the rated voltage, current, and power consumption, and evaluate the operating efficiency and energy consumption performance of the motor under no-load conditions.

2. EPS motor core special performance test

1. Cogging torque test: Analyze the torque fluctuation caused by the coupling of the electromagnetic field and the cogging structure during rotation to reduce vibration and noise interference.

2. Friction torque test: quantify bearing friction loss to meet the bearing performance requirements of low friction and long life.

3. Breakaway torque test: Verify the maximum torque output capability of the motor at the moment of starting, ensuring fast response under high load scenarios.

4. Torque fluctuation test: monitor the stability of torque output during operation to avoid performance degradation and life reduction caused by fluctuations.

5. Drag torque test: simulates the friction resistance between tires and road surfaces during actual driving and tests the adaptability of the motor's continuous torque output.

6. Torque constant (Kt) test: calibrate the linear relationship between torque and current and optimize the accuracy of the motor control algorithm.

7. Back EMF test: detects the characteristics of the rotational induced voltage and evaluates the matching of the magnetic field strength and the rotation speed.

3. EPS motor comprehensive performance verification and scenario testing

1. Multi-condition simulation test bench verification :

Complex working conditions are reproduced through a high-precision test bench, and data such as speed, torque, and temperature are collected in real-time to generate multi-dimensional performance curves and reports to ensure the reliability of the motor throughout its life cycle.

2. Environmental adaptability test :  

Verify motor performance in extreme temperatures, humidity, vibration,n, and other environments to meet global automotive-grade certification standards.

AIP is dedicated to providing EPS motor testers and customized solutions for global customers, covering automotive motor performance testing, fault diagnosis, and data analysis. Our testing equipment has high precision and high compatibility as its core advantages, helping customers improve product competitiveness.