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To reuse 3D CAD models more efficiently, a 3D CAD model retrieval approach which combines Genetic Algorithm (GA) and Ant Colony Optimization (ACO) is proposed. A CAD model is represented by feature dependency graph (FDG). The similar sub-graphs in the corresponding FDGs of different models are obtained according to polymorphic combinatorial GA and ACO. GA is adopted to obtain suboptimal solutions...
Detailed kinetic model is one of the most important basic research items that the chemic synthesis techniques will have been commercialized from laboratory. A great breakthrough has been made in the detailed mechanistic kinetics of the chemic synthesis, but LM(Levenberg-Marquardt) algorithm still plays a leading role in estimating parameters of the kinetic model. As an unlimited algorithm, LM algorithm...
In order to rapidly and accurately determine the optimal threshold in video segmentation, an improved adaptive video motion segmentation method based on genetic algorithm is proposed. Through consummating the evolve mechanism, introducing adaptive initially individual, selection operator and adaptive judgments of termination, it can overcome the problems of poor astringency and premature occurrence...
To the risks of technological innovation, risk evaluation index system is set up, and the comprehensive evaluation model is introduced in this paper. The weight of each risk factor influencing technological innovation in the model has been objectively calculated by using improved genetic algorithm . A practical example shows that this method can obtain the optimum scheme and provide the scientific...
Detailed kinetic model is one of the most important basic research items that the chemic synthesis techniques will have been commercialized from laboratory. A great breakthrough has been made in the detailed mechanistic kinetics of the chemic synthesis, but LM (Levenberg-Marquardt) algorithm still plays a leading role in estimating parameters of the kinetic model. As an unlimited algorithm, LM algorithm...
This paper deals with the shape control of a cantilever thin plate structure by using laminated piezoelectric actuators (LPA). The shape control equation of the cantilever thin plate partially covered with LPA is derived based on the constitutive relations of the elastic material and piezoelectric material and the thin plate deformation theory. The actuating forces produced by LPA are formulated as...
The control of nonlinear underactuated manipulator system is a new focus topic in the intelligent control fields. Underactuated system is second order nonholonomic system with fewer actuators than degrees of freedom. This paper summarizes briefly the basic researching results on optimized design and parameters of swing-up controller and balancing controller of underactuated system pendubot based on...
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