基于dsp的激光互相关测速系统分析word格式论文.docxVIP

摘要相关测量技术是一种非接触式测量技术，广泛应用于航天、航海、交通、钢铁、纺 织及造纸等行业中，可以在线实时测量运动固体、流体和气体的速度。本文以电动机带动的皮带为研究对象，将激光传感器、相关测量技术与数字信号处 理器 DSP（Digital Signal Processor）有机结合，研究一种基于 DSP 的激光互相关测速系 统，以达到非接触、实时性较好及精度较高的测量目的。首先，在大量阅读相关文献的基础上，提出了基于 DSP 的激光互相关测速方案。 介绍了相关测速的国内外研究现状和发展趋势，论述了相关测速的原理及相关参数的选 择。其次，根据测速系统的功能要求，对相关测速系统的总体方案进行设计，包括硬件 系统的方案设计和软件系统的方案设计。再其次，对相关测速系统的硬件进行设计，包括激光传感器、调理电路、数据采集 卡、DSP 芯片和液晶显示器 LCD（Liquid Crystal Display）的设计。第四，对相关测速系统的软件进行设计，包括系统软件、操作界面和互相关算法的设计。用 Labview 设计了测速系统的操作界面，且对快速互相关算法进行了仿真，验证 了用快速互相关算法进行测速的正确性和可行性。第五，对互相关运算的数据处理进行了详细论述，主要论述了快速互相关算法的实 现及基于 DSP 的混合编程。本文采用快速互相关算法实现了互相关函数在 DSP 上的运 算，从而确保了相关测速的实时性和精度。第六，用汇编语言在 DSP 上实现了快速傅利叶变换 FFT（Fast Fourier Transform）， 并在 CCS（Code Composer Studio）上进行了仿真，证明了相关测量技术与 DSP 的结合 是正确的和可行的，同时对相关测速的精度进行了分析。最后，对全文的研究工作进行总结并提出进一步研究的建议。关键词：DSP；激光；相关；测速AbstractCorrelation measurement technology is a technology of non-contact measurement, is widely used in aerospace, navigation, traffic, steel, textile and paper industries, and can be used to measure real-time velocity of the solid, fluid and the gas of the movement.In this paper, a belt driven by motor is served as research object. A velocity measurement system of non-contact, good real-time and high precision was researched by organic combining the laser sensor, correlation measurement technology with DSP(Digital Signal Processor).Firstly, scheme of the laser cross-correlation velocity measurement based on DSP was proposed by reading a lot of related literatures. Research status and development trend at home and abroad of the correlation velocity measurement was introduced, and this paper introduced the principle of correlation velocity measurement and the selection of related parameters.Secondly, according to the requirements of velocity measurement system, the overall scheme of the correlation velocity measurement system was designed. It concluded designs of the hardware system and software system.Thirdly, the hardware of the correlation velocity measurement system was designed. It include