The Application Of Multidisciplinary Design Optimization In Parallel Manipulator

Multidisciplinary design optimization is a new technology which comes from aerospace in recent years. It puts main emphases on the optimization of complicated products design that related to many subjects. Its success in the field of aerospace has attracted many attentions at home and abroad. It has been widely used.In our country. Multidisciplinary design optimization has just been studied on, and it is seldom used in the design of mechanisms. So this thesis takes the3-DOF cartesian parallel manipulator as an example to show the work based on the research of its technology system and method. It takes the multidisciplinary design optimization into the design of non-aerospace products.The main work follows:Firstly, The mathematical model of multidisciplinary of optimization is introduced; The meaning and characteristics of multidisciplinary design optimization are studied; The basic theory is discussed. This dissertation generalizes the multidisciplinary design optimization into eight segments; the connections between these segments are discussed and the relationship diagrams are created.Secondly, the beam and CellPhone are optimized using iSIGHT and Ansys, and the new system integrates the simulation of two kinds of software.Thirdly, a mechanism of3-DOF cartesian parallel manipulator is introduced:the degree of freedom of the manipulator is obtained based on the screw theory; Jacobian matrix and workspace analysis is completed under the premise of using prismatic joints as actuation. The dynamic model of the Cartesian parallel mechanism is derived using the Newton-Euler method.Finally, multidisciplinary design optimization theory is applied in the design problem of3-DOF cartesian parallel manipulator, and the multidisciplinary design optimization model of parallel manipulator is established; The multidisciplinary systems are designed by integrating several softwares.