A discrete-time framework for proximate time-optimal performance of damped servomechanisms. (June 2016)

• Record Type: Journal Article
• Authors: Flores, J.V.; Salton, A.T.; Gomes da Silva Jr., J.M.; Neto, N.B.; Chen, Z.
• Is Part Of: Mechatronics. Volume 36(2016)
• Page Start: 27
• Page End: 35
• Publication Date: 2016-06
• Subjects: Proximate time-optimal Servomechanism -- Control saturation -- Sector-bounded nonlinearity -- Linear matrix inequalities (LMI); Computer integrated manufacturing systems -- Periodicals; Flexible manufacturing systems -- Periodicals; Mechatronics -- Periodicals; Productique -- Périodiques; Fabrication, Systèmes flexibles de -- Périodiques; Mécatronique -- Périodiques; Computer integrated manufacturing systems; Flexible manufacturing systems; Mechatronics; Periodicals; 629.89
• DOI: 10.1016/j.mechatronics.2016.04.003
• Languages: English
• ISSNs: 0957-4158

Abstract

Abstract: This paper proposes nonlinear control strategies for the discrete-time near time-optimal control of damped servomechanisms. Both the well established Proximate Time Optimal Servomechanism (PTOS) and its dynamically damped version (ddPTOS) are extended for damped systems. Stability results are presented in a general discrete-time framework suitable for both damped and undamped systems. These results allow the reduction of constraints in the traditional PTOS – particularly regarding the acceleration discount factor – while encompassing the nonlinear damping of the ddPTOS. Experimental results demonstrate the efficiency of the proposed controllers.