“…,in order to avoid particles into local minimum, and to accelerate the convergence speed of particle swarm optimization, we can constantly change approach 1 c , 2 c .For different objectives, . Equation (2-1) is the first iteration of the particle velocity, that it has a memory capacity of the middle term is "cognitive" section, indicating its own learning, and the final one to "society" section, on behalf of the sharing of information between the particles and mutual cooperation.…”