摘要
对研究的三余度伺服控制系统的机理进行分析,建立了被控对象的线性化数学模型。在此基础上,对数字动压反馈环节的参数进行了仿真寻优,并对无故障和两种单点故障情况下系统的动、静态特性进行了仿真和分析。带惯性负载试验结果证实了理论建模分析的正确性,并表明数字动压反馈也能起到对负载谐振的阻尼作用,与机械式、模拟式实现形式相比,它更灵活、方便。
A linearized mathematical model for the developed triplex redundance servo control system is derived on the basis of its mechanism analysis. The coefficients of the digital dynamic pressure feedback (DPF) loop are optimized through simulation. The static and dynamic characteristics of the system without failure and with two single failure are simulated and analyzed. Experimental results with inertial load support the theoretical modeling and analysis. Compared with mechanical and analog DPF, the digital DPF is more flexible and can achieve same purpose for damping the inertial load resonance.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2003年第1期71-75,共5页
Journal of Solid Rocket Technology
关键词
三余度
数字控制
电液伺服系统
数字模型
triplex redundance
digital control, electro-hydraulic servo system, mathematical model