基于模糊理论的悬浮火箭控制器设计与仿真  

Design and simulation of suspended rocket controller based on fuzzy theory

作　　者：胡思翱 杨军[1] 潘涛[1] 陈华兵[1] 

机构地区：[1]中国航天科技集团公司四院四十一所,西安710025

出　　处：《固体火箭技术》2016年第6期847-850,共4页Journal of Solid Rocket Technology

摘　　要：悬浮火箭采用推力矢量控制方式,箭体俯仰、偏航通道存在控制耦合作用,模型参数在飞行过程中存在时变性,传统的PID控制算法无法取得较好的控制效果。为此,以模糊理论为基础,分别设计了参数自整定PID控制器及模糊控制器。利用MATLAB构建悬浮火箭俯仰-偏航联合控制回路仿真系统,在俯仰、偏航通道之间存在20%控制耦合作用、加入随机干扰及模型参数时变的条件下对两种控制器的性能进行检验。由仿真结果可看出,参数自整定PID控制器具有较好的鲁棒性,能够抑制系统中存在的干扰作用,控制性能更优。利用Simulink搭建悬浮火箭的六自由度仿真模型,由仿真结果可看出,采用参数自整定PID控制器后,悬浮火箭能够快速抑制干扰并迅速响应俯仰角指令。Due to the control coupling in pitch and yaw channel caused by thrust vector control and the time varying parameters of the model, the traditional PID control algorithm cannot achieve an ideal control effect. In this paper, parameters self-tuning PID controller and fuzzy controller were designed based on fuzzy theory.A pitch-yaw joint control loop of suspended rocket was built by using MATLAB.The performance of the two controllers was verified under condition that 20% control coupling between the pitch and yaw channel and random noise were added to the simulation system. Time varying model was used in the simulation. As can be seen from the resahs, the parameters self-tuning PID controller has good robustness.The controller can suppress interference in the system. The performance of parameters seff-tuning PID controller was verified in the 6-DOF simulation model of suspended rocket. Simulation result indicates that the suspended rocket can respond to the direction quickly.

关 键 词：模糊控制器 参数自整定 PID控制器 悬浮火箭 

分 类 号：V448[航空宇航科学与技术—飞行器设计]