【作者】 管晴晴；

【导师】 高英杰；

【作者基本信息】 燕山大学 ， 机械电子工程， 2009， 硕士

【摘要】 电液伺服振动台以其优良的性价比在实际工业生产中获得了广泛应用,而控制器作为其控制核心显得更为重要。本文在分析电液伺服振动台现状的基础上,研究了用PID控制器和模糊控制器控制振动台的振动轨迹,并分析了控制过程中参数对系统性能的影响。首先,归纳总结了电液振动台、电液伺服控制技术的发展及国内外现状,阐述了模糊控制的形成、发展历程、特点及其主要应用领域;其次,在建立电液振动台系统线性化数学模型的基础上,分析测试了伺服阀的动静态特性及电液伺服系统的稳态特性和动态特性,掌握了系统本身的固有特性,研究了电液振动台的控制策略,并着重讨论了模糊控制策略;最后,设计了两类控制器,即基于Ziegler-Nichols参数整定经验公式的PID控制器和模糊控制器。通过比较分析两类控制器的结构形式及控制原理,利用Matlab/Simulink仿真工具分析不同控制器对电液伺服振动台的控制性能,用PID控制器和模糊控制器对其控制效果进行仿真实验,总结出两种控制器的特点:模糊控制器控制振动台系统时系统的动态特性较好,PID控制器控制振动台系统时系统的跟踪效果较好。本课题以实现电液振动台更高的稳定性、快速性、准确性、自适应性和鲁棒性等为目标,采用理论研究、仿真分析和实验研究相结合的手段,将模糊控制引入到电液振动台的波形控制中,实现了电液振动台波形跟踪时的高精度控制。电液振动台智能控制方法的研究是一个崭新的课题,其研究成果必将全面推进振动台控制技术的发展。更多还原

【Abstract】 Electro-hydraulic vibration test stand gets a wide range of application with its excellent performance in the actual industrial production, while the controller is more important as its control core. This article has researched using PID controller and fuzzy controller to control the trajectory of vibration test stand, and then analysed the effect of control parameters basing on the analysis of the status of the electro-hydraulic vibration test stand.Firstly, summed up the development and the status at home and abroad of electro-hydraulic vibration test stand and electro-hydraulic servo control technology, illustrated the formation, development process, characteristics and main applications of fuzzy control. Secondly, this article bases on seting up the linear mathematical model of electro-hydraulic vibration test stand, analysing and testing the static and dynamic characteristics of the servo valve and steady-state characteristics and dynamic characteristics of electro-hydraulic servo control system, grasping the inherent characteristics of the system itself. Researched control strategy and focused on the fuzzy control strategy. Thirdly, designed two type controllers, fuzzy controller and PID controller based on the Ziegler-Nichols tuning parameters empirical formula. Through a comparative analysis of the structure form and control theory of two types controllers, analyses the performance of system using Matlab/Simulink simulation tool, and using PID controller and fuzzy controller to control the effect of the simulation and the test, summing up the advantage and disadvantage of the two controllers. It has a good dynamic characteristics when using fuzzy controller to control the vibration test stand system. It has a better tracking when using PID controller to control the vibration test stand system.In order to achieving a higher stability, speed, accuracy, adaptability and robustness of electro-hydraulic vibration test stand, this issue uses of a combination of theoretical research, simulation analysis and test researching, puts fuzzy control to be the controller of the electro-hydraulic vibration test stand, Realizing the high-precision waveform tracking control of the electro-hydraulic vibration test stand.It is a new subject to study intelligent control method of electro-hydraulic vibration test stand. The results of their research will comprehensively promote the development of vibration test stand control technology.更多还原