【作者】 陈鑫焱；

【导师】 龚民；

【作者基本信息】 沈阳理工大学 ， 机械电子工程， 2009， 硕士

【摘要】 机械设备的故障诊断在机械行业具有重要意义。为更加方便、准确的检测机械设备故障,本论文以TMS320F2812为核心设计一种应用于机械故障检测系统的信号处理模块。此信号处理模块能够用FFT等算法对振动信号进行处理,寻找出故障特征频率。另外,模块的DSP部分拥有与单片机连接的接口,可以与51系列单片机系统相连,作为通用的算法处理器,来完成单片机难以承担的数字信号处理,从而保证该单片机系统的实时性。论文首先对现代故障诊断技术的基本理论和数字信号处理技术及数字信号处理器进行了简要介绍。然后以振动分析为主阐述了机械故障机理及其诊断分析方法。在信号的处理方法上,着重论述FFT变换、数字滤波、相关分析、卷积计算等。在系统硬件构成方面,重点论述以TMS320F2812为核心的最小系统和以双口RAM CY7C144为核心的数据存储单元结构,介绍了解决电平匹配和抗干扰问题的方法。在系统软件构成方面,论述了软件开发环境、数据的存储与交换、算法的实现等。论文最后还提出一种基于电机的扩展应用。TMS320F2812作为一种高速的信号处理芯片,在机械故障诊断领域、电机控制等方面的应用广泛,对TMS320F2812的应用研究具有很重要的实际意义。本论文对于F2812及CY7C144的应用具有一定的应用价值和参考价值。更多还原

【Abstract】 Mechanical fault diagnosis has been playing an important role in machinery industry. For more convenient and accurate detection of mechanical fault, the thesis has designed a signal processing module applied to the mechanical fault detection system. The signal processing module can be used for processing the vibration signal by algorithms such as FFT, and can find the fault’s characteristic frequency. In addition, the DSP of the module has an interface, so the DSP can be connected to 51 series MCU system. As a general-purpose processing algorithm module, it can complete the digital signal processing, which is difficult for MCU. And it ensures the MCU system’s real-time.Firstly, the thesis introduces basic theories of modern fault diagnose techniques, the digital signal processing techniques and processors. The following work primarily discusses mechanical fault mechanisms and diagnoses based on vibrant analysis. In the researches on signal processing, this thesis lays emphases on digital filter, FFT transform, correlation analysis and so on. On one hand as hardware of this system, the thesis focuses on the TMS320F2812 minimize system, dual-port RAM level matching and anti-jamming problem. On the other hand as software, the thesis focuses CCS, algorithms and so on. Lastly, the thesis discusses an extended application base on the motor.As a high-speed DSP, the TMS320F2812 is applied in such wide field as mechanical fault diagnosis, motor controlled. This thesis has the value of utility and reference for other applications and researches.更多还原