不同初始温度下脉冲大电流直线电机驱动性能研究

Study on driving performance of high current linear motor with different initial temperature

两条金属轨道间的滑块在大电流的驱动下可获得高速,滑块与轨道接触界面的热特性影响接触状况和系统性能。本文利用电加热装置对轨道进行预加热,通过预加热来模拟电机连续推进下的热量累积。在滑块型号、质量、驱动电流基本一致的前提下,进行不同初始温度条件下的电机单次启动试验。通过温度、驱动电流、电压、运动速度等数据对大电流直线电机的性能进行分析,研究结果对于连续运行试验和避免转捩研究具有一定理论指导意义和工程应用参考价值。

The slider between two metal rails can get high speed under the drive of large current,and the thermal characteristics of the contact interface between the slider and the rails can affect the contact condition and the system performance.In this paper,the electric heating device is used to heat the rails,simulating the continuous heat accumulation of the motor by preheating.In the case that the slider type,mass,and driving current are basically consistent,the single starting test of motor is carried out with different initial temperature conditions.The performance of high current linear motor is analyzed by the data of temperature,driving current,voltage and motion speed and so on,laying a theoretical foundation and data support for continuous running test and avoiding transition.