This paper describes the important application of variable structure control (VSC) theory on induction motor (IM) decoupling control system. A design scheme using singular system variable structure control method for ...This paper describes the important application of variable structure control (VSC) theory on induction motor (IM) decoupling control system. A design scheme using singular system variable structure control method for a decoupling IM system is presented. The scheme is shown to be robust to parametric variations and external disturbances. Simulation results show the stability and effectiveness of the proposed scheme展开更多
This paper, at the first time, considers the problem of decentralized variable structure control of complex giant singular uncertainty systems by using the property of diagonally dominant matrix and Frobenius-Person t...This paper, at the first time, considers the problem of decentralized variable structure control of complex giant singular uncertainty systems by using the property of diagonally dominant matrix and Frobenius-Person theorem. The splendid selection of switching manifold for each subsystem makes the design relatively straightforward and can be easily realized. An illustrate example is given.展开更多
The nonlinear dynamic system of spacecraft with uncertainty and coupling is analyzed and its general dynamical equation is given.The decoupling-ability and controllability are proved.Aiming at this system,a new nonlin...The nonlinear dynamic system of spacecraft with uncertainty and coupling is analyzed and its general dynamical equation is given.The decoupling-ability and controllability are proved.Aiming at this system,a new nonlinear decoupling controlling method is put forward by synthetically using the variable structure and fuzzy theory.The simulation results show that this method is effective in tracking performances under the existence of uncertainty and outer disturbance.展开更多
针对多节点结构的爬架在运行中同步控制精度易受外部扰动的问题,提出一种基于滑模变结构的偏差耦合控制方法。首先,对爬架位置测量方法进行研究和分析,建立爬架动力学模型;其次,运用模糊PID(proportion integral differential)控制算法...针对多节点结构的爬架在运行中同步控制精度易受外部扰动的问题,提出一种基于滑模变结构的偏差耦合控制方法。首先,对爬架位置测量方法进行研究和分析,建立爬架动力学模型;其次,运用模糊PID(proportion integral differential)控制算法来提高偏差耦合的控制精度,并将模糊控制与滑模控制结合,设计一种模糊滑模位移控制器来消除抖动,以此来提高各节点之间的同步控制性能;最后,通过MATLAB/Simulink进行仿真和实验进行验证。仿真和实验结果表明:与传统偏差耦合结构相比,所提方法在受到干扰的情况下各节点之间的误差分别降低68.2%、73.5%、78.2%,具有更佳的同步精度,而且具有良好的鲁棒性。展开更多
对于多输入多输出系统,在控制系统设计时首先要对被控变量和操纵变量进行控制结构选择.Bristol提出的相关增益矩阵(Relative gain array,RGA)法,以及学者们后来提出的各种改进方法,都只适用于稳定系统.本文针对不稳定系统,基于多变量广...对于多输入多输出系统,在控制系统设计时首先要对被控变量和操纵变量进行控制结构选择.Bristol提出的相关增益矩阵(Relative gain array,RGA)法,以及学者们后来提出的各种改进方法,都只适用于稳定系统.本文针对不稳定系统,基于多变量广义预测控制(Generalized predictive control,GPC)的闭环控制律提出了一种控制结构的变量匹配准则.通过对预测时域、控制时域等各个参数的优化选择,使系统闭环稳定;由闭环控制律得到被控变量期望值与操纵变量的相关性矩阵,以此得出控制结构的变量配对方案.通过实例研究表明,对于开环不稳定系统,该方法可以得出正确的变量配对结果.展开更多
文摘This paper describes the important application of variable structure control (VSC) theory on induction motor (IM) decoupling control system. A design scheme using singular system variable structure control method for a decoupling IM system is presented. The scheme is shown to be robust to parametric variations and external disturbances. Simulation results show the stability and effectiveness of the proposed scheme
文摘This paper, at the first time, considers the problem of decentralized variable structure control of complex giant singular uncertainty systems by using the property of diagonally dominant matrix and Frobenius-Person theorem. The splendid selection of switching manifold for each subsystem makes the design relatively straightforward and can be easily realized. An illustrate example is given.
文摘The nonlinear dynamic system of spacecraft with uncertainty and coupling is analyzed and its general dynamical equation is given.The decoupling-ability and controllability are proved.Aiming at this system,a new nonlinear decoupling controlling method is put forward by synthetically using the variable structure and fuzzy theory.The simulation results show that this method is effective in tracking performances under the existence of uncertainty and outer disturbance.
文摘针对多节点结构的爬架在运行中同步控制精度易受外部扰动的问题,提出一种基于滑模变结构的偏差耦合控制方法。首先,对爬架位置测量方法进行研究和分析,建立爬架动力学模型;其次,运用模糊PID(proportion integral differential)控制算法来提高偏差耦合的控制精度,并将模糊控制与滑模控制结合,设计一种模糊滑模位移控制器来消除抖动,以此来提高各节点之间的同步控制性能;最后,通过MATLAB/Simulink进行仿真和实验进行验证。仿真和实验结果表明:与传统偏差耦合结构相比,所提方法在受到干扰的情况下各节点之间的误差分别降低68.2%、73.5%、78.2%,具有更佳的同步精度,而且具有良好的鲁棒性。
文摘对于多输入多输出系统,在控制系统设计时首先要对被控变量和操纵变量进行控制结构选择.Bristol提出的相关增益矩阵(Relative gain array,RGA)法,以及学者们后来提出的各种改进方法,都只适用于稳定系统.本文针对不稳定系统,基于多变量广义预测控制(Generalized predictive control,GPC)的闭环控制律提出了一种控制结构的变量匹配准则.通过对预测时域、控制时域等各个参数的优化选择,使系统闭环稳定;由闭环控制律得到被控变量期望值与操纵变量的相关性矩阵,以此得出控制结构的变量配对方案.通过实例研究表明,对于开环不稳定系统,该方法可以得出正确的变量配对结果.
