摘要
针对时滞过程提出一种改进的并联式串级控制结构,副回路采用改进的内反馈控制结构;能够有效的去除副控制器对主回路的影响,从而简化了主控制器的设计。主回路采用改进二自由度Smith预估控制,使主回路的跟踪特性和干扰抑制特性实现解耦;通过对控制器进行设计,能有效地抑制被控过程参数变化和干扰对系统性能的影响,同时保证系统具有良好的鲁棒性。这种新型并联式串级控制方法克服了常规并联式串级控制系统的不足,而且控制算法简单,便于实际系统应用。理论分析和仿真结果表明了这种方法的有效性。
An improved parallel cascade control structure was proposed for the Delay Process. The deputy loop used the improved internal feedback control structure; it can effectively remove the influence of deputy controller for the main loop,thereby simplifying the design of the main controller. The main loop used the new type of 2-DOF smith predictor control structure,which can make the setpoint tracking performance and the anti-interference performance decoupling. Through the design of the controller that can effectively suppress the influence of process parameters change and disturbance on system performance,this new type of 2-DOF Smith predictor control method overcomes the disadvantages of conventional cascade control system and control algorithm is simple. It is also convenient to be used in actual system. Theoretical analysis and simulation results have shown the validity of the proposed control method.
出处
《太原科技大学学报》
2015年第4期273-277,共5页
Journal of Taiyuan University of Science and Technology
基金
山西省自然科学基金项目(2011011011-2)
山西省回国留学人员科研资助项目(2013-092)
校研究生科技创新项目支持
关键词
并联式串级控制
内反馈控制结构
SMITH预估控制
二自由度控制
parallel cascade control
internal feedback control structure
smith predictor control
two degree of freedom control
