【摘要】 β 广义预测控制(β GPC)是指在GPC增量控制律前引入增益β,在一定范围内提高系统的稳定裕度和鲁棒性。该文从系统闭环特征方程出发得到以β为增益的开环传递函数,利用参数根轨迹分析闭环系统的特性,给出了使闭环系统稳定的β的取值范围,并确定了基于目标要求的最佳β值,能够较大程度地提高闭环系统的稳定性和动态控制效果。最后,通过仿真进一步证明了该方法的有效性。更多还原

【Abstract】 β-generalized protective control(β-GPC)refers to the introduction of the β factor to the increment control law of GPC.This introduction enables the stable margin and robustness of the system to be improved.Based on the characteristic equation of a closed system,an open transfer function whose gain is the β factor is obtained.The paper analyzes characteristics of the closed system,gives the range of the β values which make the system stable,and determines the optimum β value which satisfies the objective demand.This method can be used to improve the stability of the dynamic performance of the closed system.Its effectiveness is further proved by a simulation example finally.更多还原