基于PLC的泡沫沥青试验机控制系统研究

发布时间：2018-02-21 17:33

本文关键词： 泡沫沥青试验机控制系统 PLC 神经网络　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：泡沫沥青作为一种路面再生稳定剂，因其稳定再生混合料在材料性能、经济性能、环保性能等方面所体现的明显优势而广泛的应用在路面再生中。但是泡沫沥青的制取设备几乎完全依赖进口，因此自主研发泡沫沥青制取设备成为了一种必然趋势。国内某公司生产的FB-100型泡沫沥青试验机，在制取泡沫沥青的过程中，采用的控制方式为继电器控制方式，工艺参数调整不方便，功能的后续添加性较差。本文以FB-100型泡沫沥青试验机为研究对象，设计开发出一套新的控制系统，，解决上述问题。首先，基于对泡沫沥青试验机的工况要求，在对国内外不同类型的发泡设备控制系统进行调研后，提出了以PLC为控制器的控制方案；其次，对泡沫沥青的工艺参数进行神经网络建模，利用遗传算法进行优化，得出了一种新的求解最优工艺参数的方法；最后，基于S7-200的控制器，完成了系统的整体开发。
[Abstract]:As a kind of pavement regenerative stabilizer, foamed asphalt can stabilize the recycled mixture in material performance and economic performance. The obvious advantages of environmental protection and other aspects are widely used in road regeneration. But the equipment for producing foamed asphalt is almost entirely dependent on imports. Therefore, the independent research and development of foam asphalt production equipment has become an inevitable trend. In the process of producing foam asphalt, the FB-100 type foam asphalt testing machine produced by a domestic company is controlled by relays. The adjustment of process parameters is not convenient, and the function of subsequent addition is poor. In this paper, a new control system is designed and developed to solve the above problems by taking FB-100 type foam asphalt testing machine as the research object. First of all, based on the requirements of the working conditions of the asphalt foam testing machine, after the investigation of different types of foaming equipment control system at home and abroad, the control scheme based on PLC controller is put forward. The process parameters of foamed asphalt are modeled by neural network and optimized by genetic algorithm, and a new method to solve the optimal process parameters is obtained. Finally, the whole development of the system is completed based on the controller based on S7-200.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP273;U415.52;U414

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