汽车减振器性能试验台液压伺服控制系统的研究

发布时间：2018-03-13 12:07

本文选题：减振器　切入点：液压伺服　出处：《辽宁工业大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着经济水平的不断提高,人们也越来越追求高品质的生活,都希望有一辆属于自己的汽车,因此造就了目前国内汽车行业的巨大发展。同时,汽车的安全性、平稳性和舒适性等因素也越来越受到广大消费者的重视。为了满足消费者的需求,普遍的做法是通过使用各种高品质的汽车减振器来减小车辆的振动。而汽车减振器的性能则需要使用专用的性能试验台进行检测。因此,性能优良的汽车减振器性能试验台对于提高汽车减振器品质起到了关键的作用。本文的主要内容就是要开发一种操作简单,功能完善的汽车减振器性能试验台液压伺服控制系统。首先,本文对减振器性能试验台的发展状况进行了叙述。通过与机械式激振机构试验台相比较,发现使用液压伺服系统作为激振系统的减振器性能试验台具有更优异的性能。其次,根据课题的主要任务和要求,完成了液压系统方案的设计,并对液压系统进行了计算和选型;对系统所选择的电液伺服阀、传感器、液压缸等元件建立数学模型,并推导出电液伺服位置控制系统的传递函数。然后,利用液压、气动一体化控制仿真软件HyPneu对液压伺服控制系统进行系统的稳定性、准确性、快速性仿真与分析;并使用PID控制理论对系统进行校正。最后,选用数字信号处理器(DSP)作为整个电液伺服系统的控制器。并根据系统的实际使用情况和设计要求,对DSP控制器的电源、复位模块、仿真接口模块和D/A模块等主要硬件模块进行设计与研究。通过对仿真结果的分析,可以看出所设计的试验台液压伺服控制系统具有响应快、控制精度高的特点,能够满足系统设计的基本要求。
[Abstract]:With the continuous improvement of economic level, people are more and more in pursuit of high quality life. They all want to have a car of their own, thus creating a huge development of domestic automobile industry. At the same time, car safety, Factors such as smoothness and comfort have also been paid more and more attention by consumers. In order to meet the needs of consumers, The common practice is to reduce vehicle vibration by using a variety of high-quality automotive shock absorbers, the performance of which needs to be tested on a dedicated performance test rig. The excellent performance test bench of automobile shock absorber plays a key role in improving the quality of automobile shock absorber. The main content of this paper is to develop a kind of simple operation. A fully functional hydraulic servo control system for the performance test bench of automobile shock absorber. Firstly, this paper describes the development of the performance test bench of the shock absorber. It is found that the hydraulic servo system is used as the shock absorber performance test rig with better performance. Secondly, according to the main tasks and requirements of the subject, the design of the hydraulic system scheme is completed. The mathematical model of electro-hydraulic servo valve, sensor and hydraulic cylinder is established, and the transfer function of electro-hydraulic servo position control system is deduced. The pneumatic integrated control simulation software HyPneu is used to simulate and analyze the stability, accuracy and rapidity of the hydraulic servo control system, and the PID control theory is used to correct the system. The digital signal processor (DSP) is chosen as the controller of the whole electro-hydraulic servo system. According to the actual use and design requirements of the system, the power supply and reset module of the DSP controller are analyzed. The main hardware modules such as the simulation interface module and the D / A module are designed and studied. Through the analysis of the simulation results, it can be seen that the hydraulic servo control system of the test bed has the characteristics of fast response and high control precision. Can meet the basic requirements of system design.
【学位授予单位】：辽宁工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.52

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