电动负载模拟器的先进PID控制策略研究

发布时间：2017-12-31 20:31

本文关键词：电动负载模拟器的先进PID控制策略研究　出处：《中北大学》2015年硕士论文　论文类型：学位论文

【摘要】：负载模拟器是一种被动式力伺服控制系统，，用以模拟飞行器舵机在飞行中所承受的空气动力力矩载荷，是进行地面半实物仿真的重要设备。随着电力电子技术的发展，电机性能获得了很大改善，电动负载模拟器逐渐在航空航天、工业生产等领域得到了广泛应用。由于存在多余力矩以及系统本身的非线性和不确定性，传统控制策略结合常规PID控制难以对其进行有效的抑制。因此，为提高系统的控制性能，对电动负载模拟器进行先进PID控制策略研究是非常必要的。本文通过分析电动负载模拟器的机械结构和工作原理，建立了加载系统的数学模型，分析了多余力矩的产生机理，论述了负载模拟器的发展过程中出现的各种控制策略，并指出其优缺点。利用MATLAB软件对常规PID控制和先进PID控制包括模糊PID控制、神经网络PID控制进行仿真分析，仿真结果表明，先进PID控制策略可以实现系统的输出转矩快速、准确地跟踪输入转矩，能够有效抑制多余力矩，提高了控制性能。
[Abstract]:The load simulator is a passive force servo control system , which is used to simulate the aerodynamic moment load borne by the aircraft steering gear in flight , which is an important equipment for the semi - physical simulation of the ground . With the development of the electric power electronics technology , the electric load simulator has been widely used in the fields of aerospace and industrial production . Based on the analysis of the mechanical structure and working principle of electric load simulator , the mathematical model of loading system is established , the generation mechanism of redundant torque is analyzed , and the advantages and disadvantages are pointed out . The simulation results show that the advanced PID control strategy can realize the rapid and accurate tracking of the output torque of the system . The simulation results show that the advanced PID control strategy can quickly and accurately track the input torque , and can effectively restrain the redundant torque and improve the control performance .

【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V216.8;TP273

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