模拟退火算法和最速下降法的结合，既有模拟退火算法的全局性，搜索过程中最速下降法确定搜索方向，提高了收敛速度。-Simulated annealing algorithm and a combination of steepest descent method, both simulated annealing algorithm for the global nature of the search process in the steepest descent method to determ