In this paper,a linear/nonlinear switching active disturbance rejection control(SADRC)based decoupling control approach is proposed to deal with some difficult control problems in a class of multi-input multi-output(M...In this paper,a linear/nonlinear switching active disturbance rejection control(SADRC)based decoupling control approach is proposed to deal with some difficult control problems in a class of multi-input multi-output(MIMO)systems such as multi-variables,disturbances,and coupling,etc.Firstly,the structure and parameter tuning method of SADRC is introduced into this paper.Followed on this,virtual control variables are adopted into the MIMO systems,making the systems decoupled.Then the SADRC controller is designed for every subsystem.After this,a stability analyzed method via the Lyapunov function is proposed for the whole system.Finally,some simulations are presented to demonstrate the anti-disturbance and robustness of SADRC,and results show SADRC has a potential applications in engineering practice.展开更多
针对线性自抗扰(Linear Active Disturbance Rejection Control,LADRC)在四旋翼飞行器姿态控制中存在初始状态误差较大时可能产生“峰值”现象的问题,提出了一种基于线性/非线性自抗扰切换控制(Switch in linearnonlinear Active Distur...针对线性自抗扰(Linear Active Disturbance Rejection Control,LADRC)在四旋翼飞行器姿态控制中存在初始状态误差较大时可能产生“峰值”现象的问题,提出了一种基于线性/非线性自抗扰切换控制(Switch in linearnonlinear Active Disturbance Rejection Control,SADRC)四旋翼飞行器控制方法。以实验室现有的3-DOF四旋翼飞行器平台为研究对象,建立了其姿态的数学模型,引入SADRC对其基本原理进行了介绍;基于SADRC设计了四旋翼飞行器姿态解耦控制器,并对系统单通道的稳定性进行了分析;对控制方法进行了实验验证。结果表明,SADRC控制器可有效避免LADRC控制器因为初始状态误差引起的“峰值”问题,抗干扰性能进一步提高。展开更多
非线性自抗扰控制(Nonlinear active disturbance rejection control,NLADRC)较线性自抗扰控制(Linear active disturbance rejection control,LADRC)具有跟踪精度高、抗干扰能力强等优点,但在参数整定、稳定性分析以及控制性能分析等...非线性自抗扰控制(Nonlinear active disturbance rejection control,NLADRC)较线性自抗扰控制(Linear active disturbance rejection control,LADRC)具有跟踪精度高、抗干扰能力强等优点,但在参数整定、稳定性分析以及控制性能分析等方面有一定的困难,阻碍了非线性自抗扰控制在实际中的应用,而线性自抗扰控制成为工程应用的首选.本文提出一种线性/非线性自抗扰控制切换控制方法,该方法既综合了线性/非线性自抗扰控制的优点,又解决了非线性自抗扰控制在参数整定、稳定性分析等方面的困难:首先,分析线性/非线性自抗扰控制各自优缺点,并给出了一种切换控制策略;其次,提出一种基于优化进行查表或利用拟合公式的参数整定方法;再次,提出基于劳斯判据和鲁棒波波夫判据的稳定性分析方法.通过仿真验证了该切换方法在跟踪精度、抗干扰能力等方面具有一定优势.该切换控制方法将有助于更好地发挥非线性机制在要求实现高精度、高抗扰能力场合的独特优势,有望在工程实际中获得应用.展开更多
基金supported by the Scientific Research Innovation Development Foundation of Army Engineering University((2019)71).
文摘In this paper,a linear/nonlinear switching active disturbance rejection control(SADRC)based decoupling control approach is proposed to deal with some difficult control problems in a class of multi-input multi-output(MIMO)systems such as multi-variables,disturbances,and coupling,etc.Firstly,the structure and parameter tuning method of SADRC is introduced into this paper.Followed on this,virtual control variables are adopted into the MIMO systems,making the systems decoupled.Then the SADRC controller is designed for every subsystem.After this,a stability analyzed method via the Lyapunov function is proposed for the whole system.Finally,some simulations are presented to demonstrate the anti-disturbance and robustness of SADRC,and results show SADRC has a potential applications in engineering practice.
文摘针对线性自抗扰(Linear Active Disturbance Rejection Control,LADRC)在四旋翼飞行器姿态控制中存在初始状态误差较大时可能产生“峰值”现象的问题,提出了一种基于线性/非线性自抗扰切换控制(Switch in linearnonlinear Active Disturbance Rejection Control,SADRC)四旋翼飞行器控制方法。以实验室现有的3-DOF四旋翼飞行器平台为研究对象,建立了其姿态的数学模型,引入SADRC对其基本原理进行了介绍;基于SADRC设计了四旋翼飞行器姿态解耦控制器,并对系统单通道的稳定性进行了分析;对控制方法进行了实验验证。结果表明,SADRC控制器可有效避免LADRC控制器因为初始状态误差引起的“峰值”问题,抗干扰性能进一步提高。
文摘非线性自抗扰控制(Nonlinear active disturbance rejection control,NLADRC)较线性自抗扰控制(Linear active disturbance rejection control,LADRC)具有跟踪精度高、抗干扰能力强等优点,但在参数整定、稳定性分析以及控制性能分析等方面有一定的困难,阻碍了非线性自抗扰控制在实际中的应用,而线性自抗扰控制成为工程应用的首选.本文提出一种线性/非线性自抗扰控制切换控制方法,该方法既综合了线性/非线性自抗扰控制的优点,又解决了非线性自抗扰控制在参数整定、稳定性分析等方面的困难:首先,分析线性/非线性自抗扰控制各自优缺点,并给出了一种切换控制策略;其次,提出一种基于优化进行查表或利用拟合公式的参数整定方法;再次,提出基于劳斯判据和鲁棒波波夫判据的稳定性分析方法.通过仿真验证了该切换方法在跟踪精度、抗干扰能力等方面具有一定优势.该切换控制方法将有助于更好地发挥非线性机制在要求实现高精度、高抗扰能力场合的独特优势,有望在工程实际中获得应用.
