【作者】 周巧玲；

【导师】 李国友；

【作者基本信息】 燕山大学 ， 控制理论与控制工程， 2010， 硕士

【摘要】 经济危机无法阻挡全球经济飞速发展的大趋势,如何平衡经济发展与非可再生能源消耗之间的矛盾变得迫在眉睫。能源问题解决的途径为节能与开发新能源,这也是当今的热点。二次调节系统以高利用率和节能为目的,对系统能量进行回收再利用。在企业追求高利润的今天,二次调节系统受到重视。本文在这种大背景下,选择了具有理论与实际意义的二次调节转速系统的控制为研究方向。首先,本文对目前国内外二次调节技术的现状进行了总结,阐述了二次调节系统的特点和在工业中的应用,并对未来可能的应用前景进行了展望。二次调节系统的控制方式主要分为转速控制、功率控制和转矩控制,其中转速控制是最基本、最常用也是最容易实现的控制方式,所以本文采用转速控制方式。针对转速控制下的二次调节系统进行研究,对其结构进行了较为详细的介绍,分析了它的工作原理,在此基础上推导建立了系统的数学模型,为下面控制策略的研究打下了基础。其次,在阅读大量相关文献的基础上,针对二次调节系统设计了控制算法。为求尽快推广使用,将目前先进的控制方法与工业中常用的控制方法相结合,设计了模糊PID控制器。对于二次调节转速系统参数的易变性,尤其是转动惯量和阻尼系数的改变以及外界干扰的存在设计了模糊滑模控制器。模糊滑模控制器利用滑模算法的强鲁棒性和对参数变化及外界干扰的不敏感来保证转速系统的稳定性,同时利用模糊算法减弱滑模控制的抖振。应用两种控制算法分别进行了仿真,取得了良好的控制效果,有效的增加了系统的自适应力和对环境改变的调节能力。最后,在燕山大学二次调节液压系统综合实验台基础上,对二次调节转速控制系统进行了实验,与仿真对比证明了前面理论分析的可行性。更多还原

【Abstract】 The global economic crisis can not stop the major trend of rapid economic development. How to balance economic development and non-renewable energy consumption has become an imminent conflict. The ways to solve energy problems are energy-saving and the exploiture of new energy sources, which are today’s hot spots. Secondary regulation system with the purpose of high efficiency and energy saving can recycle and reuse the system energy. Today, in the high profit pursuit of the enterprises, the secondary regulation system has aroused enough attention. In this general background, this paper selects the secondary regulation speed control system with theoretical and practical significance for study direction.Firstly, this article summarizes the technical current situation of secondary regulation at home and abroad, explains the characteristics of secondary regulation system and applications in industry, and prospects possible applications in future. Secondary regulation system control modes are divided into speed control, power control and torque control, where speed control is the most basic, the most common and most easy to implement control mode, so this paper applies speed control mode.In this paper, the secondary regulation system is analyzed with speed control, introduced the system structure and working principle in detail. On this basis, the mathematical model of the system is established, which provides basis for the study of the following control strategy.Secondly, based on consulting relevant data, this paper designs control algorithms for the secondary regulation system. In order to promote and use the secondary regulation system as soon as possible, this paper designs fuzzy PID controller which combines the existing advanced control methods and control methods commonly used in industry. Aimed at parameters variability of the secondary regulation speed control system, particularly the changes of inertia and damping coefficient and the presence of external interference, fuzzy sliding mode controller is designed. Fuzzy sliding mode controller uses the strong robustness of the sliding mode algorithm and insensitivity for parameters change and external interference to ensure the stability of the speed system, use fuzzy algorithm to reduce chatterings of the sliding mode control at the same time. This paper uses two kinds of control algorithm to simulate and achieves good control effect. The two kinds of control algorithm effectively increase the system’s adaptivity and adjustment ability for environment change.Finally, in YanShan university, experiments of the second regulation speed control system are studied based on the second regulation hydraulic system integrated laboratory bench, test data are compared with the simulations in order to prove the feasibility of previous theoretical analysis.更多还原