When the parameters of the system change abruptly, a new multivariable adaptive feedforward decoupling controller using multiple models is presented to improve the transient response. The system models are composed of...When the parameters of the system change abruptly, a new multivariable adaptive feedforward decoupling controller using multiple models is presented to improve the transient response. The system models are composed of multiple fixed models, one free-running adaptive model and one re-initialized adaptive model. The fixed models are used to provide initial control to the process. The re-initialized adaptive model can be reinitialized as the selected model to improve the adaptation speed. The free-running adaptive controller is added to guarantee the overall system stability. At each instant, the best system model is selected according to the switching index and the corresponding controller is designed. During the controller design, the interaction is viewed as the measurable disturbance and eliminated by the choice of the weighting polynomial matrix. It not only eliminates the steady-state error but also decouples the system dynamically. The gtobel convergence is obtained and several simulation examples are presented to illustrate the effectiveness of the proposed controller.展开更多
工业过程运行控制的目的是实现反映过程整体运行性能的工艺指标.将常规解耦内模控制(Internal model control,IMC)进行推广,提出了优化过程运行的解耦IMC方法.通过对广义解耦内模控制器的设计获得了具有高维解耦能力、鲁棒稳定性和抗干...工业过程运行控制的目的是实现反映过程整体运行性能的工艺指标.将常规解耦内模控制(Internal model control,IMC)进行推广,提出了优化过程运行的解耦IMC方法.通过对广义解耦内模控制器的设计获得了具有高维解耦能力、鲁棒稳定性和抗干扰能力强的回路设定模型.该模型能够响应系统的各种不确定性和干扰,对回路设定值进行调整,通过控制回路的输出跟踪凋整后的设定值,从而实现期望的工艺指标.磨矿回路运行的解耦IMC设计实例及仿真验证了所提方法的有效性.展开更多
针对复杂工业生产过程中常常出现的输入与输出变量数目不相等的非方系统,首次提出一种基于奇异值分解(Singular value decomposition,SVD)的内模控制(Internal model control,IMC)新方法.该方法通过添加补偿项实现对非方系统的解耦并消...针对复杂工业生产过程中常常出现的输入与输出变量数目不相等的非方系统,首次提出一种基于奇异值分解(Singular value decomposition,SVD)的内模控制(Internal model control,IMC)新方法.该方法通过添加补偿项实现对非方系统的解耦并消除不可实现因素,并应用SVD矩阵理论设计一种非对角型滤波器,使控制系统不仅具备良好的高维解耦能力和响应速度快的优点,而且因设置新型滤波结构而具备极强的鲁棒性.仿真结果表明了这种方法的有效性和可靠性.展开更多
文摘When the parameters of the system change abruptly, a new multivariable adaptive feedforward decoupling controller using multiple models is presented to improve the transient response. The system models are composed of multiple fixed models, one free-running adaptive model and one re-initialized adaptive model. The fixed models are used to provide initial control to the process. The re-initialized adaptive model can be reinitialized as the selected model to improve the adaptation speed. The free-running adaptive controller is added to guarantee the overall system stability. At each instant, the best system model is selected according to the switching index and the corresponding controller is designed. During the controller design, the interaction is viewed as the measurable disturbance and eliminated by the choice of the weighting polynomial matrix. It not only eliminates the steady-state error but also decouples the system dynamically. The gtobel convergence is obtained and several simulation examples are presented to illustrate the effectiveness of the proposed controller.
文摘工业过程运行控制的目的是实现反映过程整体运行性能的工艺指标.将常规解耦内模控制(Internal model control,IMC)进行推广,提出了优化过程运行的解耦IMC方法.通过对广义解耦内模控制器的设计获得了具有高维解耦能力、鲁棒稳定性和抗干扰能力强的回路设定模型.该模型能够响应系统的各种不确定性和干扰,对回路设定值进行调整,通过控制回路的输出跟踪凋整后的设定值,从而实现期望的工艺指标.磨矿回路运行的解耦IMC设计实例及仿真验证了所提方法的有效性.
文摘针对复杂工业生产过程中常常出现的输入与输出变量数目不相等的非方系统,首次提出一种基于奇异值分解(Singular value decomposition,SVD)的内模控制(Internal model control,IMC)新方法.该方法通过添加补偿项实现对非方系统的解耦并消除不可实现因素,并应用SVD矩阵理论设计一种非对角型滤波器,使控制系统不仅具备良好的高维解耦能力和响应速度快的优点,而且因设置新型滤波结构而具备极强的鲁棒性.仿真结果表明了这种方法的有效性和可靠性.
