基于模糊切换增益调节的燃气流量滑模控制

Design of Sliding Mode Control of Gas Flow Based on Fuzzy Change Gain Regulation

将模糊控制方法与滑模控制方法相结合,针对燃气流量调节伺服系统设计一种基于模糊切换增益调节的滑模控制器,固冲发动机流量调节伺服控制系统的不确定部分通过滑模控制器来补偿,从而可实现固冲发动机流量调节伺服系统的鲁棒控制;使用matlab对固冲发动机流量调节伺服系统进行建模仿真并与单纯使用滑模控制方法进行比较,仿真结果表明基于模糊切换增益调节的固冲发动机模糊滑模控制系统具有较好的给定适应性和抗干扰性,采用该控制方案能有效的抑制系统随机干扰对控制系统的不利影响,控制效果优于纯滑模控制方法,消弱了控制信号的抖振,为提高固冲发动机流量调节控制系统的动态性能奠定基础。

By means of the fuzzy control and sliding mode control method combined, a sliding mode controller based on fuzzy change gain regulation is presented for gas flow regulation servo system. The uncertain section of solid rocket ramjet motor flow regulation servo control system is compensated by sliding mode controller , thus solid rocket ramjet motor flow regulation servo system achieve robust control. Solid rocket ramjet motor flow regulation servo system was modeled and simulated based on the use of MATLAB, and compared with sliding mode control method alone . The simulation results show that the solid rocket ramjet motor sliding mode control system based on fuzzy change gain regulation has preferable given adaptability and immunity to interference, which adopt fuzzy and sliding mode control method based on fuzzy change gain regulation can effectively inhibit the system random interference＇ s disadvantageous influence to control system and can weaken the chattering of control signal input, its anti-jamming ability and control result were better than sliding mode control method alone. Therefore, the proposed fuzzy and sliding mode control method lay the foundation for improvement of dynamic performance of solid rocket ramjet motor flow regulation servo control system.