LP01

我国是世界上小麦种植面积最大和消费最高的国家之一。小麦为国际主粮之一，也是食品工业的重要原料。作为最重要粮食品种之一的小麦，其价值与用途取决于它的品质。因此，基于信号处理技术，研究客观、便捷的小麦品质测定方法对提高小麦品质、减少产后损失、保证国家粮食安全具有十分重要的意义。本课题拟在研究、分析国内外无损检测技术在农产品品质分析应用现状和研究进展的基础上，研究小麦籽粒声信号的预处理方法。根据声学检测原理，研制出小麦籽粒的声信号采集装置，首先采集小麦籽粒下落碰撞所产生的声音信号，对小麦声信号进行编辑和预处理，实验结合信号处理技术及MATLAB软件，对单粒小麦样品的声信号进行谱估计和小波变换，提取出时域和频域特征参数，为探讨小麦声学特性与其品质指标的关系奠定基础。本论文利用MATLAB软件编写小麦声音信号预处理程序，通过对小麦籽粒声信号进行处理，成功的提取出了有效的时域、频域的多种特征参数，为研究其声学特性与小麦品质内在的关系，做了充分的准备工作。(China is one of the countries in the world which has the largest wheat growing area and highest consumption. Wheat is one kind of the staple food in the world and also an important material for food industry. The value of wheat and its use all depends on is quality, To enhance quality of wheat,readuce post harvest loss and ensure grain security, great efforts should be made to develop rapid, objective, and easy methods for assessing wheat quality using signal processing techniques. This paper do the research of wheat signal preconditioning method and it basis of analysis domestic and foreign non-destructive testing technology.According to acoustic detection theory,an equipment of obtaining wheat sound signals is developed. Collecting the dropping voice signals of different varieties of wheat samples.And then do editing and sound signal preprocessing on wheat through signal processing technology.This paper do some research about spectrum estimate and wavelet transform on single wheat wi)

new text doccument consists of patterns

FSK调制解调波形，调制产生，非相干解调算法及其包络检测法实现，带通滤波，全波整流，低通滤波(FSK modulation and demodulation code and wave forms)

使用matlab的GUI功能编写的一个计算器，可以方便快捷的使用(the Calculator program by matlab )

包含特征值与特征向量的提取、训练样本以及最后的识别，信号维数的估计，小波包分析提取振动信号中的特征频率。( Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, Signal dimension estimates, Wavelet packet analysis to extract vibration signal characteristic frequency.)

粒子群优化算法(PSO)是一种进化计算技术(evolutionary computation)，有Eberhar博士和kennedy博士发明。源于对鸟群捕食的行为研究 ，PSO同遗传算法类似，是一种基于叠代的优化工具。 (Particle Swarm Optimization (PSO) is an evolutionary computation technique (evolutionary computation), and has Eberhar Dr. Dr. kennedy invention. Stems from the behavior of predatory birds, PSO with genetic algorithm is similar to an iterative optimization-based tools.)

一个锁屏幕的程序，不再电脑旁时，防止被其他人看你的电脑资料(A lock screen program is no longer next time the computer, and prevent other people to read your computer data)

simulink仿真例子，simulink(Simulink simulation example, Simulink)

mathwork公司培训时老师送的用simulink开发的混合动力汽车模型，很好很强大。(mathwork corporate training with the teacher sent simulink developed hybrid car model, very very powerful.)

nonlinear control sliding mode