论文部分内容阅读
设计一种双时间常数的伪速率调制器,在分析调制器基本原理的基础上,给出调制器脉冲时间和描述函数的计算方法.针对调制器参数众多的问题,提出一种改进的粒子群优化算法,将动态惯性权重设计为一种二次指数型函数,并引入粒子和全局最优点距离量,使得惯性权重不仅随着迭代次数变化,而且与其距全局最优点的距离有关.综合时间最优和燃料最优两项指标,将粒子群适应度函数设计成与时间和燃耗的函数.最后通过仿真验证了所提出的改进的调制器结构和参数寻优算法的有效性.
A pseudo-rate modulator with two time constants is designed. Based on the analysis of the basic principle of the modulator, a method for calculating the pulse duration and the description function of the modulator is given. For the problem of many modulator parameters, an improved particle swarm optimization Optimization algorithm, the dynamic inertia weight is designed as a quadratic exponential function, and the distance between the particle and the global optimal point is introduced so that the inertia weight not only changes with the number of iterations but also with the distance from the global optimal point Optimization and fuel optimization, the particle swarm fitness function is designed as a function of time and fuel consumption.Finally, simulation results show the effectiveness of the proposed improved modulator structure and parameter optimization algorithm.