非自衡时滞对象的改进内模控制  

Modified internal model control for integrating plants with time delay

作　　者：尹成强[1] 岳继光[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《控制与决策》2009年第10期1593-1596,1600,共5页Control and Decision

摘　　要：针对化工生产中常见的具有积分和时滞特性的过程对象,采用一种改进的两自由度内模控制方案.其中一个新增的控制器用于设定值跟踪响应的期望极点配置,利用直接合成法设计设定值跟踪控制器;另一个新增的控制器用于稳定对象和抑制扰动,并采用期望闭环余灵敏度法确定控制器.设定值跟踪控制器和扰动抑制控制器可通过性能参数独立调节,并保证系统具有较好的鲁棒稳定性.最后,通过仿真实例验证了控制方案的有效性.A two-degree-of-freedom control structure is used for chemical and industrial integrating process with time delay based on modified internal model control. One of added controller is applied to meet the objective of closed-loop pole placement for desired setpoint response, and direct synthesis method is used to design the tracking controller. The other added controller is responsible for stabilizing the unstable process and rejecting the load disturbance, and the controller is designed by the desired closed-loop complementary sensitivity function. The controller for set-point response and the controller for disturbance rejection can be adjusted independently. Moreover, good robust stability is gained for the system. Finally, simulation examples show the effectiveness of the control scheme.

关 键 词：改进内模控制 非自衡对象 鲁棒性 两自由度 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]