基于新型组合积分控制器的积分过程先进控制  

Advanced Control of Integral Process Based on New Combined Integral Controller

作　　者：刘志明 任正云[1] 陈安钢 

机构地区：[1]东华大学信息科学与技术学院,上海201620

出　　处：《计算机测量与控制》2018年第1期115-118,共4页Computer Measurement &Control

基　　金：国家自然科学基金项目(60674088)

摘　　要：针对传统控制算法在控制工业生产过程中常见的积分加纯滞后对象时存在鲁棒性较差、常值负荷扰动导致输出静差等问题,提出了一类双闭环控制器:内环和外环均使用组合积分控制器;内环用于系统的稳定,外环消除输入干扰的影响和改善控制系统的动态性能;这种控制器结构简单,仅有两个可调参数,且参数整定方便、直观;从理论上对该控制算法在设定值跟踪和扰动消除方面的有效性进行了分析;仿真结果表明:对于积分加纯滞后对象,在模型失配和干扰存在的情况下,该控制算法仍然能够保持稳定的被控输出,具有良好的鲁棒稳定性和动态调节品质,同时对时间常数较大的一阶加纯滞后系统也有着良好的控制效果。Focusing on the poor robust stability and the static output error from the constant load disturbance when traditional control algorithm controls the integrator plus time delay process which is common in the industrial production process,a kind of double closed loop combined integral control strategy is proposed.Both the inner and the outer loop use combined integral controllers.The inner loop stabilizes process,while the outer one eliminates the steady-state error and improves the control performance.This controller is simple in structure.It has only two adjustable parameters and the tuning procedures of two parameters are convenient and intuitive.The control algorithm's effectiveness in setpoint tracking and disturbance cancellation is analyzed theoretically.The simulation research shows that a stabilized output can still be hold even under the model mismatches and the disturbances,which demonstrates good robust stability and dynamic regulating performance.At the same time,the algorithm also has good control effect when used in first-order plus dead-time model with big time constant.

关 键 词：双闭环组合积分控制策略 积分加纯滞后 鲁棒稳定性 动态调节品质 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]