摘要
为补偿卫星载荷运动产生的干扰力矩,设计了一种基于超声电机的力矩补偿机构。基于传统控制策略的比例、积分、微分(PID)闭环负反馈控制系统调速效果难以令人满意,在这种情况下建立了系统的数学模型,设计了基于模糊PI控制的闭环调速控制系统,并与传统的PI控制进行了对比。根据干扰力矩的给定形式,设计了飞轮运行的正弦速度给定曲线,仿真结果表明,该方法能够有效补偿载荷干扰力矩。此外,设计了以数字信号处理器(DSP)芯片为核心的硬件驱动控制电路,并进行了实验验证。结果表明,该算法比传统的PI控制效果更好,速度曲线跟踪精度明显提升。
In order to compensate the disturbance torque caused by the movements of the payloads of satellite, a torque compensation mechanism based on ultrasonic motor is designed. The speed control effect of the proportional, integral and differential （PID） closed-loop negative feedback control system based on the traditional control strategy is not satisfactory. In this case, the mathematical model of the system is established, and a closed loop speed control system based on fuzzy PI control is designed and compared with the traditional PI control system. According to the given form of the disturbance torque, the sine speed given curve of the flywheel is designed, and the simulation results show that the method can effectively compensate the load disturbance torque. In addition, a hardware-driven control circuit based on a digital signal processor（DSP） chip is designed and experimentally verified. The results show that the algorithm is better than the traditional PI control, and the speed curve tracking accuracy is significantly improved.
作者
许文运
申友涛
黄卫清
孙梦馨
XU Wenyun;SHENG Youtao;HUANG Weiqing;SUN Mengxin(State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Aecc Aero Engine Control Sysetm Institute,Wuxi 214100,China;Shanghai Institute of Spaceflight Control Technology,Shanghai 201109,China;School of Mechanical and Electric Engineering,Guangzhou University,Guangzhou 510006,China)
出处
《压电与声光》
CAS
CSCD
北大核心
2018年第3期356-361,共6页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(51405420)
国家自然基金资助项目(51375224)
江苏省自然科学基金资助项目(BK20140474)
关键词
超声电机
卫星飞轮
力矩补偿
速度跟踪
模糊PI
ultrasonic motor
satellite flywheel
torque compensation
speed tracking
fuzzy PI
