Original Articles: 2014 Vol: 6 Issue: 3
Optimization design for the over-travel rod spring of the vacuum circuit breaker through the improved genetic algorithm
The mechanical properties of the vacuum circuit breaker can directly influence the realization of its electrical properties. In view of the vacuum circuit breaker operating mechanism, this paper will elaborate on the function of Disc Spring on over-travel rod and make a multi-objective optimization design of it. In the process of optimization, the simple genetic algorithm was improved through adjusting the crossover probability and mutation probability, the second crossover, the specified gene mutation and the immigration strategy, and shortcomings when the simple genetic algorithm came into immature convergence were also easily overcome. Through comparing the optimization result and calculation efficiency of the traditional Matlab algorithm, the simple genetic algorithm and the improved genetic algorithm, the superiority of the improved genetic algorithm was verified. Meanwhile, the optimization result was experimented in the laboratory. Results showed that using the improved genetic algorithm for disc spring optimization design was feasible and effective, and the theoretical basis of optimization design for disc spring was provided as well.