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通过ANSYS仿真软件得到PTC热敏电阻的电流随温度的变化关系,然后通过设计PID控制器来达到恒流控制的目的。系统仿真结果表明,该控制方法具有动态响应较快、超调量小等特点,具有很好的应用前景。
By the ANSYS simulation software to get PTC thermistor current with temperature changes, and then through the design of PID controller to achieve the purpose of constant current control. The simulation results show that this control method has the characteristics of fast dynamic response and small overshoot, which has a good application prospect.