参数自整定模糊PI控制在纳卫星热控系统中的应用

在功能维持不变甚至更强的条件下,卫星体积、尺寸和质量不断减小,致使在卫星内部小空间内单位时间传输大量的热,因此常规的热控技术很难满足控制要求.为使纳卫星负载温度稳定在允许范围内,亟需研发新的热控方法.在纳卫星温度系统模型基础上,将PI参数模糊自整定控制器与航天器热控技术相结合,得到纳卫星智能热控系统,以调节辐射器散热面为控制目标,并进行了仿真研究.结果表明,该控制策略响应快,适戍性和鲁棒性强,消除了稳态误差,较模糊控制和传统PI控制具有更好的动、静态特性,适用于纳卫星热控系统.

Application of Parameter Self-tuning Fuzzy PI Cntrol in Nano-satellite's Thermal Control System

On the basis of sustaining the satellite function in a good condition,when the satellite volume,size and mass keeps decreasing,a large amount of heat will be transferred from its inner space,and the conventional thermal control technology cannot satisfy the controlling needs.To keep the stability of load temperature within permissible range,new reasonable thermal control methods are needed.Based on the model of Nano-satellite's temperature system,by combining the on-line self-tuning of PI parameter controll...