A study on optimization design of a hybrid actuator

A hybrid mechanism is a configuration that combines the motions of two characteristically different electric motors by means of a mechanism to produce programmable output. Hybrid five bar mechanism is the most representative one of hybrid mechanism. In this paper, a dynamics analysis method for a hybrid five-bar mechanism is introduced based on power bond graph theory. Then, an optimization design of hybrid actuator is performed with reference to dynamic objective function. By making use of the properties of ergodicity, inherent stochastic property and regularity of chaos, this paper propose a chaos optimization algorithm with the help of Matlab optimization toolbox. Optimum dimensions are obtained assuming there are no dimensional tolerances or clearances. Finally, a numerical example is carried out, and the simulation result shows that the hybrid optimization method is feasible and satisfactory in the optimal design of hybrid actuator.