基于PID算法的電液比例閥控制系統(tǒng)研究
[Abstract]:Traditional electro-hydraulic proportional valve technology is switch valve technology, proportional valve technology and servo valve technology, this is a kind of analog control technology, its accurate control is based on the closed-loop control, it depends on a variety of sensors, servo valves, servo amplifiers, Controller and other hardware and various automatic control theory combined to complete. This is a complex system, expensive, maintenance trouble, high failure rate system, must be expert design, expert debugging, expert use, expert maintenance, to large-scale promotion and application of obstacles. This paper introduces some advantages and disadvantages of traditional electro-hydraulic proportional valve technology, analyzes several commonly used electro-hydraulic proportional valves, and expounds the present situation and development of modern proportional valves. The electro-hydraulic proportional valve closed-loop control system based on PID algorithm is a kind of control system which uses software instead of some complex hardware. This system can effectively solve all kinds of problems of traditional proportional valve technology, and its control function is powerful. The maintenance cost is low, the system control precision is high and the system structure is relatively simple. In the control circuit design of electro-hydraulic proportional valve, single chip microcomputer control system, digital PID algorithm and PWM (Pulse width Modulation) technology are studied. According to the control requirements of the electro-hydraulic proportional valve, the control program of the system is compiled, and the circuit and power amplifier circuit of the single-chip microcomputer control system are designed. The precision and reliability of the control circuit are greatly improved. In this system, the serial port communication module of MCU is connected with the host computer. Through the upper computer, the running state of the system can be monitored in real time, or the running state of the system can be changed by the upper computer, thus the man-machine interaction can be realized. According to the control requirements, this paper establishes the mathematical model of the control system, obtains the transfer function of the system, and then simulates under the SIMULINK environment of MATLAB to obtain the steady state and dynamic response characteristic curves of the valve. It provides theoretical basis for further optimization of electro-hydraulic proportional valve control system. It has certain practical significance for the improvement of the control level of electro-hydraulic proportional valve, the promotion of its modernization and the development of digitization.
【學(xué)位授予單位】:長沙理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TH137.52
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 韓壯志,李偉,王田苗,張玉茹,何永強(qiáng),趙志文;方便易用的功放集成電路LMD18245[J];電子技術(shù)應(yīng)用;2000年04期
2 郭宏廣 ,馮開林;工程機(jī)械電液比例閥的特點(diǎn)及其應(yīng)用研究[J];工程機(jī)械;2003年05期
3 曹秉剛;郭卯應(yīng);中野和夫;史維祥;;錐閥流場的邊界元法解析[J];機(jī)床與液壓;1991年02期
4 張鐵華,楊友勝,賀小峰,李壯云;水壓閥閥口流量系數(shù)的研究[J];機(jī)床與液壓;2002年02期
5 周恩濤,廖生行,牟丹;電液比例閥控系統(tǒng)模糊-PID控制的研究[J];機(jī)床與液壓;2003年06期
6 付文智,李明哲,李東平,孫剛,金昕;液壓錐閥的數(shù)值模擬[J];機(jī)床與液壓;2004年02期
7 張紅娟,李維;基于PIC單片機(jī)的直流電機(jī)PWM調(diào)速系統(tǒng)[J];機(jī)電工程;2005年02期
8 李洪興;模糊控制器與PID調(diào)節(jié)器的關(guān)系[J];中國科學(xué)E輯:技術(shù)科學(xué);1999年02期
9 包松,鮑可進(jìn),余景華;基于單片機(jī)PID算法的直流電機(jī)測控系統(tǒng)[J];微機(jī)發(fā)展;2003年08期
10 楊勝波;;淺談電熱比例閥的特點(diǎn)及其應(yīng)用[J];中國新技術(shù)新產(chǎn)品;2011年04期
相關(guān)碩士學(xué)位論文 前10條
1 邢印姣;電液比例同步控制系統(tǒng)研究[D];南京航空航天大學(xué);2010年
2 雍安姣;基于先進(jìn)超聲波電機(jī)的精密定位技術(shù)[D];天津大學(xué);2005年
3 馬薇;壓鑄機(jī)高速流量閥及其控制策略研究[D];浙江大學(xué);2006年
4 劉桂芹;電液比例控制技術(shù)在工程鉆機(jī)中應(yīng)用的研究[D];中國地質(zhì)大學(xué);2006年
5 趙俊;液壓系統(tǒng)變工況能量回收技術(shù)研究[D];西南交通大學(xué);2007年
6 史耀強(qiáng);雙足機(jī)器人步行仿真與實(shí)驗(yàn)研究[D];上海交通大學(xué);2008年
7 黎職富;基于高頻PWM的電液比例控制系統(tǒng)的研究與設(shè)計(jì)[D];湖南大學(xué);2008年
8 楊翔;挖掘機(jī)用新型電液比例多路閥的控制策略研究[D];中南大學(xué);2008年
9 黃宜慶;PID控制器參數(shù)整定及其應(yīng)用研究[D];安徽理工大學(xué);2009年
10 李海洋;裝載機(jī)智能控制系統(tǒng)研究[D];東北大學(xué);2008年
本文編號:2190677
本文鏈接:http://sikaile.net/kejilunwen/jixiegongcheng/2190677.html