论文部分内容阅读
为了改善傅里叶变换红外光谱仪中动镜运动控制系统的动态性能和静态性能,设计了基于扰动观测器的非线性PID控制器。首先对该动镜驱动系统进行数学建模,分析系统中的非线性因素。之后给出了设计该控制器的理论依据。最后进行了数值仿真分析和实验验证。实验结果表明:动镜以133mm/s运动时,采用基于扰动观测器的非线性PID控制器控制时,系统响应超调量为0,上升时间为3ms,稳态均方差为0.0392,性能明显优于传统PID控制器。结果证明了该控制器的可行性和实用性,满足了干涉仪的动镜匀速性要求。
In order to improve the dynamic performance and static performance of the moving mirror motion control system in Fourier transform infrared spectrometer, a nonlinear PID controller based on disturbance observer is designed. First of all, the kinematic mirror driving system is mathematically modeled to analyze the nonlinear factors in the system. After that, the theoretical basis for designing the controller is given. Finally, the numerical simulation and experimental verification. The experimental results show that the system response overshoot is 0, the rise time is 3ms and the steady-state mean square deviation is 0.0392 when the moving mirror is controlled by the disturbance observer based nonlinear PID controller at 133mm / s. The performance is obviously superior In the traditional PID controller. The result proves the feasibility and practicability of the controller and meets the requirements of the constant mirror of the interferometer.