This paper introduces an electrical drives control architecture combining a fractional-order controller and a setpoint pre-filter. The former is based on a fractional-order proportional-integral(PI) unit, with a non-i...This paper introduces an electrical drives control architecture combining a fractional-order controller and a setpoint pre-filter. The former is based on a fractional-order proportional-integral(PI) unit, with a non-integer order integral action, while the latter can be of integer or non-integer type. To satisfy robustness and dynamic performance specifications, the feedback controller is designed by a loop-shaping technique in the frequency domain. In particular, optimality of the feedback system is pursued to achieve input-output tracking. The setpoint pre-filter is designed by a dynamic inversion technique minimizing the difference between the ideal synthesized command signal(i.e., a smooth monotonic response) and the prefilter step response. Experimental tests validate the methodology and compare the performance of the proposed architecture with well-established control schemes that employ the classical PIbased symmetrical optimum method with a smoothing pre-filter.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
基金partially supported by the Australian Research Council(DP160104994)
文摘This paper introduces an electrical drives control architecture combining a fractional-order controller and a setpoint pre-filter. The former is based on a fractional-order proportional-integral(PI) unit, with a non-integer order integral action, while the latter can be of integer or non-integer type. To satisfy robustness and dynamic performance specifications, the feedback controller is designed by a loop-shaping technique in the frequency domain. In particular, optimality of the feedback system is pursued to achieve input-output tracking. The setpoint pre-filter is designed by a dynamic inversion technique minimizing the difference between the ideal synthesized command signal(i.e., a smooth monotonic response) and the prefilter step response. Experimental tests validate the methodology and compare the performance of the proposed architecture with well-established control schemes that employ the classical PIbased symmetrical optimum method with a smoothing pre-filter.
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.
