We investigate motion synchronization of dual-cylinder pneumatic servo systems and develop an adaptive robust synchronization controller. The proposed controller incorporates the cross-coupling technology into the int...We investigate motion synchronization of dual-cylinder pneumatic servo systems and develop an adaptive robust synchronization controller. The proposed controller incorporates the cross-coupling technology into the integrated direct/indirect adaptive robust control(DIARC) architecture by feeding back the coupled position errors, which are formed by the trajectory tracking errors of two cylinders and the synchronization error between them. The controller employs an online recursive least squares estimation algorithm to obtain accurate estimates of model parameters for reducing the extent of parametric uncertainties, and uses a robust control law to attenuate the effects of parameter estimation errors, unmodeled dynamics, and disturbances. Therefore, asymptotic convergence to zero of both trajectory tracking and synchronization errors can be guaranteed. Experimental results verify the effectiveness of the proposed controller.展开更多
随着现代科技的发展,工业领域中应用多轴伺服联动的场合越来越多,对其同步性能的要求将会越来越高。将EtherCAT(Ethernet for Control Automation Technology)技术引进到多轴伺服控制系统中可进一步提高系统的同步性能。为使EtherCAT技...随着现代科技的发展,工业领域中应用多轴伺服联动的场合越来越多,对其同步性能的要求将会越来越高。将EtherCAT(Ethernet for Control Automation Technology)技术引进到多轴伺服控制系统中可进一步提高系统的同步性能。为使EtherCAT技术更好地应用到多轴伺服运动系统中,本文阐述了EtherCAT的基本通信原理,介绍了基于EtherCAT的多轴伺服运动控制系统的基本结构以及从站工作原理,并从延迟计算、偏移补偿和漂移补偿3个方面重点分析了EtherCAT的同步性能,最后试验表明其同步性能可很好地满足多轴伺服运动控制领域的应用。展开更多
基金supported by the Fundamental Research Funds for the Central Universities,China(No.2014QNA40)the Natural Science Foundation of Jiangsu Province,China(No.BK20140188)
文摘We investigate motion synchronization of dual-cylinder pneumatic servo systems and develop an adaptive robust synchronization controller. The proposed controller incorporates the cross-coupling technology into the integrated direct/indirect adaptive robust control(DIARC) architecture by feeding back the coupled position errors, which are formed by the trajectory tracking errors of two cylinders and the synchronization error between them. The controller employs an online recursive least squares estimation algorithm to obtain accurate estimates of model parameters for reducing the extent of parametric uncertainties, and uses a robust control law to attenuate the effects of parameter estimation errors, unmodeled dynamics, and disturbances. Therefore, asymptotic convergence to zero of both trajectory tracking and synchronization errors can be guaranteed. Experimental results verify the effectiveness of the proposed controller.
文摘随着现代科技的发展,工业领域中应用多轴伺服联动的场合越来越多,对其同步性能的要求将会越来越高。将EtherCAT(Ethernet for Control Automation Technology)技术引进到多轴伺服控制系统中可进一步提高系统的同步性能。为使EtherCAT技术更好地应用到多轴伺服运动系统中,本文阐述了EtherCAT的基本通信原理,介绍了基于EtherCAT的多轴伺服运动控制系统的基本结构以及从站工作原理,并从延迟计算、偏移补偿和漂移补偿3个方面重点分析了EtherCAT的同步性能,最后试验表明其同步性能可很好地满足多轴伺服运动控制领域的应用。
