Optimal Design and Experimental Validation of Compliant Mechanical Amplifiers for Piezoceramic Stack Actuators
- 1 May 2000
- journal article
- research article
- Published by SAGE Publications in Journal of Intelligent Material Systems and Structures
- Vol. 11 (5), 360-369
- https://doi.org/10.1106/d6uj-0fbt-p1w0-u1wx
Abstract
An optimization method has been developed for design of compliant mechanical amplifiers for piezoceramic stack actuators. A topology optimization approach is used where the objective is to maximize the stroke amplification, and results show good algorithm convergence and good mechanism performance. The focus of this paper is on using the optimal topology solution to generate a solid model, and on improving the actuator performance through detail design and analysis of the resulting monolithic compliant mechanical amplifiers. A study of the effect of various flexure hinge configurations and other design parameters on the amplification and mechanical advantage of an actuator is performed. Another actuator with a large stroke amplification is designed using a batch of random starting points to the optimization algorithm. Prototype actuators have been fabricated, and the results of experimental validations are presented.Keywords
This publication has 10 references indexed in Scilit:
- An Energy Formulation for Parametric Size and Shape Optimization of Compliant MechanismsJournal of Mechanical Design, 1999
- Design of smart composite materials using topology optimizationSmart Materials and Structures, 1999
- Design of a high efficiency, large stroke, electromechanical actuatorSmart Materials and Structures, 1999
- Topology optimization of compliant mechanisms using the homogenization methodInternational Journal for Numerical Methods in Engineering, 1998
- Design of Displacement-Amplified Induced-Strain Actuators for Maximum Energy OutputJournal of Mechanical Design, 1997
- Topological Synthesis of Compliant Mechanisms Using Multi-Criteria OptimizationJournal of Mechanical Design, 1997
- Design of high force, high displacement actuators for helicopter rotorsSmart Materials and Structures, 1996
- Precision position control of piezoelectric actuators using charge feedbackJournal of Guidance, Control, and Dynamics, 1995
- Generating optimal topologies in structural design using a homogenization methodComputer Methods in Applied Mechanics and Engineering, 1988
- Optimal structural design for given deflectionZeitschrift für angewandte Mathematik und Physik, 1970