Multi-Objective Design Optimization of an Over-Constrained Flexure-Based Amplifier

Abstract

Abstract:The optimizing design for enhancement of the micro performance of manipulator based on analytical models is investigated in this paper. By utilizing the established uncanonical linear homogeneous equations, the quasi-static analytical model of the micro-manipulator is built, and the theoretical calculation results are tested by FEA simulations. To provide a theoretical basis for a micro-manipulator being used in high-precision engineering applications, this paper investigates the modal property based on the analytical model. Based on the finite element method, with multipoint constraint equations, the model is built and the results have a good match with the simulation. The following parametric influences studied show that the influences of other objectives on one objective are complicated. Consequently, the multi-objective optimization by the derived analytical models is carried out to find out the optimal solutions of the manipulator. Besides the inner relationships among these design objectives during the optimization process are discussed.

Dynamic Characteristics Analysis of Two-Beam Laser Welding Robot for Fulselage Panels

“…The natural frequencies and mode shapes of four-bar linkages and its variants are estimated by modal analysis, whereas the dynamic performance at different operating regimes is assessed [20] . By establishing the improved analytical dynamic model based on the Energy principle, Hamilton principle and the multipoint constraint equations of the micro-manipulator, Yuan et al [21] carries out the modal analysis to get the free vibration expression of the manipulator. Then, the natural frequency of the micromanipulator with other design objectives of the manipulator are coordinated to make the overall performance better.…”

Development of Piezo-Driven Compliant Bridge Mechanisms: General Analytical Equations and Optimization of Displacement Amplification

“…However, these studies have focused on the analyses of compliant bridge mechanisms that are specifically in parallel [ 23 ], aligned [ 24 ] and rhombic type [ 25 , 26 ] configurations, as shown in Figure 2 . As a result, design processes are separated and repeated for these configurations since the geometric characteristics are not transformable [ 27 , 28 ]. In addition, the design of a compliant bridge mechanism is simultaneously limited by kinematics, stress and stiffness, which are determined by the geometric parameters.…”