Abstract
This paper presents the dynamic modelling and performance evaluation methodologies of a flexure-base mechanism for ultra-precision grinding operations. The mechanical design of the mechanism is briefly described. A piezoelectric actuator is used to drive the moving platform. A flexure-based structure is utilized to guide the moving platform and to provide preload for the piezoelectric actuator. By simplifying the Hertzian contact as a linear spring and damping component, a bilinear dynamic model is developed to investigate the dynamic characteristics of the flexure-based mechanism. Based on the established model, the separation phenomenon of the moving platform from the piezoelectric actuator is analyzed. The influence of the control voltage on the maximum overshoot is also investigated. The slope and cycloidal command signals are used to reduce and/or avoid the overshoot of such flexure-based mechanism under step command signal actuation condition. The effects of the rising time of the command signals on the maximum overshoot and the settling time are studied.
Original language | English |
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Title of host publication | 11th International Conference on Control, Automation, Robotics and Vision, ICARCV 2010 |
Publisher | IEEE, Institute of Electrical and Electronics Engineers |
Pages | 811-815 |
Number of pages | 5 |
ISBN (Print) | 9781424478132 |
DOIs | |
Publication status | Published - 2010 |
Event | International Conference on Control, Automation, Robotics and Vision 2010 - Singapore, Singapore Duration: 7 Dec 2010 → 10 Dec 2010 Conference number: 11th https://ieeexplore.ieee.org/xpl/conhome/5702939/proceeding (Proceedings) |
Conference
Conference | International Conference on Control, Automation, Robotics and Vision 2010 |
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Abbreviated title | ICARV 2010 |
Country/Territory | Singapore |
City | Singapore |
Period | 7/12/10 → 10/12/10 |
Internet address |
Keywords
- Flexure-based mechanism
- Piezoelectric actuator
- Ultra-precision grinding