摘要
针对光纤陀螺用SLD光源温控模型不准确所带来的温控系统稳定裕度不足、稳态精度差的问题,提出一种基于相角裕度补偿反推延迟环节的模型辩识方法,精确获取了SLD光源温控模型中的延迟时间常数,并据此设计了PID控制器.仿真及实验结果表明,温控系统幅值裕度、相角裕度分别优于10 dB、35°,在-20℃^+60℃温度范围内可以实现优于0.01℃的控温精度,有效提高了系统稳定裕度和稳态精度,满足任务需求.
The stability margin and accuracy of temperature control system are insufficient because of the inaccurate control model of SLD used in FOG(Fiber Optic Gyroscope).A method is proposed based on the compensation of phase margin to speculate the delay module,which can accurately measure the delay parameter and direct the design of PID controller.The results of simulation and experimentation show that the magnitude margin of temperature control system is more than 10dB and the phase margin is more than 35 degree,and moreover,the stability accuracy of temperature control system can reach to 0.01℃in the range of-20℃^+60℃,which can totally meet the needs of task.
作者
李勇
赵亚飞
张聪
张宇飞
LI Yong;ZHAO Yafei;ZHANG cong;ZHANG Yufei(Beijing Institute of Control Engineering,Beijing 100190,China;Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms,Beijing 100190,China)
出处
《空间控制技术与应用》
CSCD
北大核心
2019年第5期51-54,62,共5页
Aerospace Control and Application
