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基于定量反馈理论的两轴稳定平台混合控制器设计

Keywords: 定量反馈,稳定平台,鲁棒控制,Matlab仿真

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Abstract:

针对两轴稳定平台中控制对象的不确定性及其扰动问题,在建立其不确定数学模型的基础上,综合考虑了对象的不确定性范围和系统的性能指标要求,采用定量反馈理论研究了两轴稳定平台跟踪伺服控制,设计了鲁棒性强的跟踪控制器.采用Matlab进行仿真结果显示:定量反馈理论(QFT)和比例积分微分(PID)相结合的直流电机驱动控制器具有响应速度快、无超调、抗干扰能力强以及稳态误差小等优点;其动、静态性能均优于单一控制器,较好地抑制输出干扰带来的影响,使两轴稳定平台系统得到良好动态响应,便于工程实现.

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