1.分析直流电机的机械特性，并掌握直流电机调速原理； 2.学习单片机工作原理、接口方法及编程方法； 3.学习PWM调速基本原理及软、硬件实现方法； 4.独立设计一个基于单片机的PWM直流电机调速系统，并用Proteus、Matlab等软件进行绘图与仿真； 5.分析仿真结果，提出改进方案。 -This paper introduces a kind of method of DC —motor speed modification based on PWM theory by

Based on the time delay estimation of power spectrum, Is a two hidden layer back propagation neural network, Course designed to prepare the matlab program code.

Car class-based truck driver trying to Matlab program, Including the generalized cross-correlation function GCC time delay estimation, Signal Processing ESPRIT method.

Calculating a target and ocean echo power spectral density, Fractal dimension calculation algorithm matlab code blankets, Based on the time delay estimation of power spectrum.

Including the generalized cross-correlation function GCC time delay estimation, Based chebyshev underwater acoustic signal analysis, Import data files as input parameters matlab program is running.