Aiming at the structural design of Gough-Stewart platform for fine pose and position adjustment of secondary mirror in large optical telescope

analyzed the performance requirement for fine pose and position adjustment mechanism of secondary mirror in large optical telescope and brought out two design criteria for optimum structural design

one is Transmission Precision performance and the other is Stiffness performance. Selected two angular-dimensioned parameters and three nondimensionalized linear-dimensioned parameters as design parameters and explained the delimitation of define area of each design parameters. Brought out two Global Conditioning Indexes

one is Movement Precision performance index and the other is Stiffness performance index and adapted Reachable Workspace to the requirement of pose and position fine adjustment. In the guideline of unified objective method Multiply-Divide

constructed a unified objective function and built a mathematical model for constrained single objective optimization problem. Programmed in MATLAB base on an improved Genetic Algorithm and got the Pareto optimal solution

provided reference for further design.