变转速节流复合调速系统模糊控制仿真与实验研究

发布时间：2018-01-23 22:44

本文关键词： 变转速节流复合调速控制策略模糊PID 联合仿真测控系统　出处：《安徽理工大学》2011年硕士论文　论文类型：学位论文

【摘要】：变转速节流复合调速是在变频泵控马达液压动力传动基础上发展起来的新型液压调速方式。它将变转速调速与节流调速相结合,不但具有良好的节能性和可靠性,同时克服了变转速液压调速系统存在动态响应慢、低速特性差等缺点,因此被广泛研究。针对复合调速较为复杂的系统结构必须探索和研究对应的控制策略和算法,从而建立行之有效的控制系统。论文研究了液压系统的运行机理、控制策略,并且采用模糊PID控制算法设计了一套变转速节流复合调速系统的控制系统,建立了实验台测控平台,并且完成了控制系统的仿真和实验研究。本文介绍了液压调速回路基本形式和特点,阐述了变转速液压技术、电液测控技术和模糊控制技术的概况和发展趋势。针对本液压实验系统,分析和总结了变转速节流复合调速系统的控制策略以及模糊PID控制算法。利用AMESim搭建了仿真系统,同时通过AMESim和Simulink联合建模与仿真对系统的控制部分进行了研究,设计了遵循复合控制策略且包含模糊控制算法的控制器。进而基于虚拟仪器技术和模块化设计方法完成了液压测控系统的开发,数据采集部分阐述了数据采样还原和DAQmx的测量架构,它采用测量单个脉冲幅宽的方法来测量马达转速,并利用一系列的数据处理方法得到理想的结果。在控制器模块部分则主要实现了在LabVIEW中数字PID控制程序和模糊控制器的设计；视频监视模块和网络通信模块使系统的信息化水平更高。运用以上建立的联合仿真系统和实验平台测控系统,论文进行了大量的仿真与实验研究。结果表明：泵控马达变转速节流复合调速系统与传统液压调速系统相比在控制和节能方面具有明显优越性,新的复合控制策略和模糊控制算法更进一步提高了复合调速系统的控制特性。图[67]表[9]参[64]
[Abstract]:Variable speed throttling compound speed regulation is a new hydraulic speed regulation method developed on the basis of variable frequency pump controlled motor hydraulic power drive. It combines variable speed speed regulation with throttling speed regulation. It not only has good energy saving and reliability, but also overcomes the shortcomings of variable speed hydraulic speed regulation system, such as slow dynamic response and poor low speed characteristic. Therefore, it is widely studied. In view of the complex system structure of compound speed regulation, the corresponding control strategy and algorithm must be explored and studied, so as to establish an effective control system. The paper studies the operation mechanism of hydraulic system. The control strategy and fuzzy PID control algorithm are used to design a control system of variable speed and throttling compound speed control system. The test platform is established and the simulation and experimental research of the control system is completed. This paper introduces the basic form and characteristics of hydraulic speed regulating circuit, and expounds the general situation and development trend of variable speed hydraulic technology, electro-hydraulic measurement and control technology and fuzzy control technology. The control strategy and fuzzy PID control algorithm of variable speed throttling compound speed control system are analyzed and summarized. The simulation system is built with AMESim. At the same time, the control part of the system is studied through the joint modeling and simulation of AMESim and Simulink. The controller which follows the compound control strategy and contains the fuzzy control algorithm is designed, and the hydraulic measurement and control system is developed based on the virtual instrument technology and the modular design method. In the part of data acquisition, the measurement architecture of data sampling and restoring and DAQmx is introduced. It uses the method of measuring the width of single pulse to measure the speed of motor. A series of data processing methods are used to obtain the ideal results. In the controller module, the design of digital PID control program and fuzzy controller in LabVIEW is mainly realized. Video monitoring module and network communication module make the information level of the system higher. Using the above established joint simulation system and experimental platform measurement and control system. A large number of simulation and experimental studies have been carried out in this paper. The results show that the pump control motor variable speed throttling compound speed control system is superior to the traditional hydraulic speed control system in terms of control and energy saving. The new compound control strategy and fuzzy control algorithm further improve the control characteristics of the compound speed control system. [67 tables. [9 reference. [64]
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH137

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