热压成型装备精密温控研究

为了提高热压装备的温度控制精度，采用热电致冷器作为温度控制的主控元件构建了热压成型系统。针对热电致冷器呈现的复杂热电特性，在对其模型进行小信号线性化的基础上，获得了热电致冷器的控制模型。结合传统PID控制和模糊控制的优点，根据热电致冷器的非线性和可能的不确定性因素，建立PID参数自调整的推理规则，设计了热压成型装备温控的模糊PID控制器。阶跃响应实验表明该温控系统具有良好的动态性能和稳态品质，其升降温速度不小于1℃/s，温控精度可达0.2℃,满足热压成型装备精密温控的要求。

Research on the temperature precise control in the hot embossing device

Thermoelectric cooler was used as the main component of temperature controlling in hot embossing device to acquire high temperature control precision. The control model of thermoelectric cooler was derived by using small-signal linearization method due to its complex thermoelectric performance. A fuzzy PID controller is designed by combined fuzzy control with conventional PID control. Fuzzy reasoning rule of PID parameters is designed according to nonlinear and uncertainty of the hot embossing temperature control system. The performance of temperature control system was tested in the followed experiments. The stepped response tests show that the controller has satisfying dynamic and static performance. The temperature control precision can reach 0.2°C and temperature increasing/decreasing speed is greater than 1°C /s. It can satisfy the system requirements of the precise control of temperature in hot embossing device.