Journal
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
Volume 29, Issue 2, Pages 835-840Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCST.2019.2958017
Keywords
Manipulators; Vibrations; Observers; Automation; Output feedback; Stability analysis; Boundary output feedback control; flexible two-link manipulator (FTLM); high-gain observer; input saturation; vibration control
Funding
- National Key Research and Development Program of China [2017YFB1300102]
- China Postdoctoral Science Foundation [2019T120048]
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This paper focuses on boundary output feedback control for a flexible two-link manipulator system with input saturation. Controllers such as BOFCs, high-gain observers, and auxiliary systems are proposed to address control issues, with the stability of the system proven through mathematical analysis and simulation results confirming the effectiveness of the controllers.
This brief focuses on the boundary output feedback control for a flexible two-link manipulator (FTLM) system with input saturation. For the purpose of suppressing elastic vibration and regulating manipulator's angular position, boundary output feedback controllers (BOFCs) are proposed. When the system states cannot be directly measured, a set of high-gain observers are designed to reproduce these immeasurable system states. Simultaneously, in order to solve the problem of excessive control input caused by high-gain observers, two auxiliary systems are designed to compensate for the input saturation. The stability of the FTLM system is obtained through mathematical analysis. Furthermore, the effectiveness of the designed controllers is proved by numerical simulations.
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