This paper presents the mechanism and control design of a modular XY nanopositioning stage employing flexure mechanisms and piezoelectric actuators. A new compact parallel flexure stage with two translational degrees-of-freedom is presented. The dual-stacked bridge-type amplifier is employed by a serial connection of two amplifiers. Static and dynamic analytical modeling of the XY stage are carried out, which are verified by performing finite element analysis simulations. Owing to a larger amplification ratio of the bridge-type amplifier and acceptable decoupling property, the stage exhibits a nearly decoupled two-dimensional large motion. Moreover, the adaptive discrete sliding mode control scheme is devised to achieve precise positioning for the stage. The performance and effectiveness of this presented design are verified by several experimental studies.
机构:
Univ Macau, Dept Electromech Engn, Taipa 999078, Peoples R ChinaUniv Macau, Dept Electromech Engn, Taipa 999078, Peoples R China
Tang, Hui
Li, Yangmin
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机构:
Univ Macau, Dept Electromech Engn, Macau 999078, Peoples R China
Tianjin Univ Technol, Sch Mech Engn, Tianjin 300384, Peoples R China
King Abdulaziz Univ, Autonomous Syst Res Grp, Jeddah 21413, Saudi ArabiaUniv Macau, Dept Electromech Engn, Taipa 999078, Peoples R China