A novel control scheme of active disturbance rejection internal model control(ADRIMC) is proposed to improve the anti-interference ability and robustness for the dead-time process. The active anti-interference concept...A novel control scheme of active disturbance rejection internal model control(ADRIMC) is proposed to improve the anti-interference ability and robustness for the dead-time process. The active anti-interference concept is introduced into the internal model control(IMC) by analyzing the relationship between IMC and disturbance observer control(DOB). Further, a design process of disturbance filter is presented to realize the active anti-interference ability for ADRIMC scheme. The disturbance filter is used to estimate an equivalent disturbance consisting of both external disturbances and internal disturbances caused by model mismatches.Simulation results demonstrate that the proposed method possesses a good disturbance rejection performance, though losing some partial dynamic performance. In other words, the proposed method shows a tradeoff between the dynamic performance and the system robust.展开更多
An adaptive internal mode control is proposed to eliminate effectively periodic disturbance with uncertain frequency caused by input error angle of PIGA （Pendulous Integrating Gyro Accelerometer）. An adaptive algori...An adaptive internal mode control is proposed to eliminate effectively periodic disturbance with uncertain frequency caused by input error angle of PIGA （Pendulous Integrating Gyro Accelerometer）. An adaptive algorithm with periodic disturbance frequency identification on line is applied and the internal model controller parameters are adjusted to eliminate disturbance. Then the convergence of this algorithm and the stability of the system are proved by the averaging method. Simulation results verify the proposed scheme can eliminate periodic disturbance and improve the test precision for PIGA effectively.展开更多
An IMC-PID controller was proposed for unstable second-order time delay system which shows the characteristics of inverse response(RHP zero). A plot of Ms versus λ was suggested to calculate the suitable tuning param...An IMC-PID controller was proposed for unstable second-order time delay system which shows the characteristics of inverse response(RHP zero). A plot of Ms versus λ was suggested to calculate the suitable tuning parameter λ, which provides a trade-off between performance and robustness. Six different forms of process models were selected from literature to show the applicability of the present method. Performance of controller was calculated by ITAE and total variation TV and compared with recently published tuning rules. Undesirable overshoot was removed by using a set-point weighting parameter. Robustness was tested by introducing a perturbation into the various model parameters and closed-loop results show that the designed controller is robust in the case of model uncertainty. The proposed method shows an overall better closed-loop response as compared to other recently reported methods.展开更多
针对高精度交流调速系统,将分数阶微积分理论、内模控制、模糊控制和比例积分微分(proportional integral differential,PID)控制相结合,提出了一种模糊分数阶内模PI-νDa+ν控制器。首先,考虑到分数阶微积分的优良特性,将其引入交流调...针对高精度交流调速系统,将分数阶微积分理论、内模控制、模糊控制和比例积分微分(proportional integral differential,PID)控制相结合,提出了一种模糊分数阶内模PI-νDa+ν控制器。首先,考虑到分数阶微积分的优良特性,将其引入交流调速系统的内模PID控制器中,得到了一种分数阶内模PI-νDa+ν控制器,该控制器包含3个可调参数。然后,通过阶跃响应分析了控制器参数对系统性能的影响,并根据分析结果设计了模糊控制器,实现了控制器参数的智能整定,克服了分数阶控制器参数整定困难的不足。实验结果表明,模糊分数阶内模PI-νDa+ν控制器可以使系统具有良好的动态响应、扰动抑制特性和克服参数摄动的鲁棒性。展开更多
针对永磁无刷直流电机调速系统提出了一种改进的内模PI(Internal model control PI,IMC-PI)控制方法。根据内模控制原理设计出PI控制器,引入一种作用函数,将其与PI控制器串联构成改进的IMC-PI控制器。作用函数为偏差的微分表达式,其阶...针对永磁无刷直流电机调速系统提出了一种改进的内模PI(Internal model control PI,IMC-PI)控制方法。根据内模控制原理设计出PI控制器,引入一种作用函数,将其与PI控制器串联构成改进的IMC-PI控制器。作用函数为偏差的微分表达式,其阶次的选择应保证系统开环传递函数严格真实。改进IMC-PI控制可使系统的调节过程分为作用函数趋近零和保持为零的两个阶段,从而保证系统偏差按照作用函数等于零确定的轨迹趋近于零。仿真和实验结果表明方法可有效提高控制系统的性能。展开更多
提出了一种带PD输出电压瞬时值反馈内环的内模控制(internal model control,IMC)-PID电压型逆变电源控制方案:PD瞬时值反馈内环提高系统的动态性能,IMC-PID外环保证系统的稳态性能。给出了详细的基于极点配置的内环PD控制器和外环IMC-PI...提出了一种带PD输出电压瞬时值反馈内环的内模控制(internal model control,IMC)-PID电压型逆变电源控制方案:PD瞬时值反馈内环提高系统的动态性能,IMC-PID外环保证系统的稳态性能。给出了详细的基于极点配置的内环PD控制器和外环IMC-PID控制器设计步骤和方法。该方案只需检测输出电压,控制器结构简单,分析设计容易。仿真和实验结果表明该控制系统不仅具有优良的动、稳态性能,而且有很强的鲁棒性。相对电压、电流双环控制方案而言,该文提出的方案控制器结构和分析更加简单,成本更低,鲁棒性更强。展开更多
内模控制方法因具有诸多优点而引起了业界的广泛关注,但难以在DCS中直接实现,现有的IMC-PID设计方法存在着只针对特定模型才能设计或通用设计但近似程度偏低的问题,提出了一种新的IMC-PID控制器设计方法,采用一般形式的Pade多项式逼近IM...内模控制方法因具有诸多优点而引起了业界的广泛关注,但难以在DCS中直接实现,现有的IMC-PID设计方法存在着只针对特定模型才能设计或通用设计但近似程度偏低的问题,提出了一种新的IMC-PID控制器设计方法,采用一般形式的Pade多项式逼近IMC-PID转化过程中出现的复杂项,然后对照该Pade多项式和PID控制器表达式设计PID控制器参数。该方法广泛适用于各种单变量对象,也能够毫无修改地应用于多变量系统的IMC-PID控制器参数设计。与基于M ac laurin展式的IMC-PID设计方法相比,该方法提供了具有更强理论依据的微分滤波时间常数计算式,能够获得与内模策略更为接近的控制效果。展开更多
基金Project(61273132)supported by the National Natural Foundation of ChinaProject(20110010010)supported by Higher School Specialized Research Fund for the Doctoral Program,China
文摘A novel control scheme of active disturbance rejection internal model control(ADRIMC) is proposed to improve the anti-interference ability and robustness for the dead-time process. The active anti-interference concept is introduced into the internal model control(IMC) by analyzing the relationship between IMC and disturbance observer control(DOB). Further, a design process of disturbance filter is presented to realize the active anti-interference ability for ADRIMC scheme. The disturbance filter is used to estimate an equivalent disturbance consisting of both external disturbances and internal disturbances caused by model mismatches.Simulation results demonstrate that the proposed method possesses a good disturbance rejection performance, though losing some partial dynamic performance. In other words, the proposed method shows a tradeoff between the dynamic performance and the system robust.
文摘An adaptive internal mode control is proposed to eliminate effectively periodic disturbance with uncertain frequency caused by input error angle of PIGA （Pendulous Integrating Gyro Accelerometer）. An adaptive algorithm with periodic disturbance frequency identification on line is applied and the internal model controller parameters are adjusted to eliminate disturbance. Then the convergence of this algorithm and the stability of the system are proved by the averaging method. Simulation results verify the proposed scheme can eliminate periodic disturbance and improve the test precision for PIGA effectively.
基金India (MHRD, India) for providing financial support
文摘An IMC-PID controller was proposed for unstable second-order time delay system which shows the characteristics of inverse response(RHP zero). A plot of Ms versus λ was suggested to calculate the suitable tuning parameter λ, which provides a trade-off between performance and robustness. Six different forms of process models were selected from literature to show the applicability of the present method. Performance of controller was calculated by ITAE and total variation TV and compared with recently published tuning rules. Undesirable overshoot was removed by using a set-point weighting parameter. Robustness was tested by introducing a perturbation into the various model parameters and closed-loop results show that the designed controller is robust in the case of model uncertainty. The proposed method shows an overall better closed-loop response as compared to other recently reported methods.
文摘针对高精度交流调速系统,将分数阶微积分理论、内模控制、模糊控制和比例积分微分(proportional integral differential,PID)控制相结合,提出了一种模糊分数阶内模PI-νDa+ν控制器。首先,考虑到分数阶微积分的优良特性,将其引入交流调速系统的内模PID控制器中,得到了一种分数阶内模PI-νDa+ν控制器,该控制器包含3个可调参数。然后,通过阶跃响应分析了控制器参数对系统性能的影响,并根据分析结果设计了模糊控制器,实现了控制器参数的智能整定,克服了分数阶控制器参数整定困难的不足。实验结果表明,模糊分数阶内模PI-νDa+ν控制器可以使系统具有良好的动态响应、扰动抑制特性和克服参数摄动的鲁棒性。
文摘针对永磁无刷直流电机调速系统提出了一种改进的内模PI(Internal model control PI,IMC-PI)控制方法。根据内模控制原理设计出PI控制器,引入一种作用函数,将其与PI控制器串联构成改进的IMC-PI控制器。作用函数为偏差的微分表达式,其阶次的选择应保证系统开环传递函数严格真实。改进IMC-PI控制可使系统的调节过程分为作用函数趋近零和保持为零的两个阶段,从而保证系统偏差按照作用函数等于零确定的轨迹趋近于零。仿真和实验结果表明方法可有效提高控制系统的性能。
文摘提出了一种带PD输出电压瞬时值反馈内环的内模控制(internal model control,IMC)-PID电压型逆变电源控制方案:PD瞬时值反馈内环提高系统的动态性能,IMC-PID外环保证系统的稳态性能。给出了详细的基于极点配置的内环PD控制器和外环IMC-PID控制器设计步骤和方法。该方案只需检测输出电压,控制器结构简单,分析设计容易。仿真和实验结果表明该控制系统不仅具有优良的动、稳态性能,而且有很强的鲁棒性。相对电压、电流双环控制方案而言,该文提出的方案控制器结构和分析更加简单,成本更低,鲁棒性更强。
文摘内模控制方法因具有诸多优点而引起了业界的广泛关注,但难以在DCS中直接实现,现有的IMC-PID设计方法存在着只针对特定模型才能设计或通用设计但近似程度偏低的问题,提出了一种新的IMC-PID控制器设计方法,采用一般形式的Pade多项式逼近IMC-PID转化过程中出现的复杂项,然后对照该Pade多项式和PID控制器表达式设计PID控制器参数。该方法广泛适用于各种单变量对象,也能够毫无修改地应用于多变量系统的IMC-PID控制器参数设计。与基于M ac laurin展式的IMC-PID设计方法相比,该方法提供了具有更强理论依据的微分滤波时间常数计算式,能够获得与内模策略更为接近的控制效果。
