【摘要】：采用矢量控制的異步電機(jī)傳動(dòng)系統(tǒng)憑借與直流電機(jī)相媲美的優(yōu)良控制性能而廣泛應(yīng)用于各個(gè)工業(yè)領(lǐng)域,包括一些可靠性要求較高的場(chǎng)合。然而,由于惡劣工作環(huán)境或者人員誤操作等原因,系統(tǒng)部件可能會(huì)發(fā)生故障,其中,最易受到外界影響的部件是傳感器,而在異步電機(jī)的矢量控制系統(tǒng)中,必須對(duì)電流和轉(zhuǎn)速進(jìn)行閉環(huán)控制,一旦電流傳感器或速度傳感器發(fā)生故障就會(huì)造成反饋信息的不準(zhǔn)確甚至缺失,這將會(huì)嚴(yán)重地影響整個(gè)系統(tǒng)的控制性能,甚至導(dǎo)致系統(tǒng)崩潰,造成巨大的經(jīng)濟(jì)損失和人員傷亡。因此,針對(duì)電流傳感器和速度傳感器故障的容錯(cuò)控制就顯得尤為重要。本文針對(duì)電流傳感器故障提出了一種更加簡(jiǎn)單的容錯(cuò)控制方法,針對(duì)速度傳感器的故障提出了一種可靠性更高的容錯(cuò)控制方法。首先給出了異步電機(jī)在兩相靜止坐標(biāo)下的系數(shù)學(xué)模型,然后介紹了本文采用的電流傳感器故障容錯(cuò)控制方法以及所用到的電流估計(jì)器,接著又在兩相靜止坐標(biāo)系下分別介紹了擴(kuò)展卡爾曼濾波器轉(zhuǎn)速估計(jì)算法、擴(kuò)展卡龍貝格估計(jì)器轉(zhuǎn)速估計(jì)算法以及本文所采用的速度傳感器故障容錯(cuò)控制方法。最后,在MATLAB/Simulink中搭建了電流傳感器和速度傳感器故障容錯(cuò)控制的仿真模型,仿真結(jié)果證明了本文所提方案的正確性和有效性。為了驗(yàn)證本文所提出的傳感器故障容錯(cuò)控制方案的可行性,搭建了 1.5kW的實(shí)驗(yàn)樣機(jī)平臺(tái),在以TMS320F28335DSP為控制核心的實(shí)驗(yàn)平臺(tái)上進(jìn)行了容錯(cuò)控制實(shí)驗(yàn)研究,實(shí)驗(yàn)結(jié)果表明本文所提出的容錯(cuò)控制方案在傳感器故障的情況下依然可以保證系統(tǒng)繼續(xù)安全運(yùn)行,證明了本文所提方案的可行性。
[Abstract]:Vector-controlled induction motor drive system is widely used in various industrial fields because of its excellent control performance comparable to that of DC motor, including some occasions with high reliability requirements. However, due to the harsh working environment or misoperation of personnel, system components may fail, among which, the most vulnerable to outside world. In vector control system of asynchronous motor, current and speed must be closed-loop controlled. Once the current sensor or speed sensor fails, the feedback information will be inaccurate or even missing. This will seriously affect the control performance of the whole system, and even lead to system collapse. This paper presents a simpler fault-tolerant control method for current sensor faults and a more reliable fault-tolerant control method for speed sensor faults. The coefficient model of asynchronous motor in two-phase stationary coordinates is presented. Then the fault-tolerant control method of current sensor and the current estimator used in this paper are introduced. Then the speed estimation algorithm of extended Kalman filter and the speed estimation of extended Caromberg estimator are introduced in two-phase stationary coordinates. Finally, the fault-tolerant control simulation model of current sensor and speed sensor is built in MATLAB/Simulink. The simulation results prove the correctness and validity of the proposed scheme. The feasibility of the scheme is studied. A 1.5kW prototype platform is built and the fault-tolerant control experiment is carried out on the experimental platform with the control core of TMS320F28335 DSP. The experimental results show that the fault-tolerant control scheme proposed in this paper can ensure the system to continue to operate safely even if the sensor is faulty. It proves that the scheme proposed in this paper can ensure the system to run safely. Feasibility.
【學(xué)位授予單位】：西安理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM343

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 周長(zhǎng)攀;楊貴杰;蘇健勇;孫國(guó)棟;;基于正常解耦變換的雙三相永磁同步電機(jī)缺相容錯(cuò)控制策略[J];電工技術(shù)學(xué)報(bào);2017年03期

2 成庶;李蔚;陳特放;丁榮軍;張桂新;;整流器主電路開路故障診斷及容錯(cuò)控制研究[J];電工技術(shù)學(xué)報(bào);2016年13期

3 尹忠剛;肖鷺;孫向東;劉靜;鐘彥儒;;基于粒子群優(yōu)化的感應(yīng)電機(jī)模糊擴(kuò)展卡爾曼濾波器轉(zhuǎn)速估計(jì)方法[J];電工技術(shù)學(xué)報(bào);2016年06期

4 徐殿國(guó);劉曉峰;于泳;;變頻器故障診斷及容錯(cuò)控制研究綜述[J];電工技術(shù)學(xué)報(bào);2015年21期

5 韓力;王崇任;李輝;金釗;袁春;;基于DTC的異步電機(jī)三相六開關(guān)容錯(cuò)控制策略[J];電機(jī)與控制學(xué)報(bào);2015年10期

6 郭超偉;高艷霞;張曲遙;宋文祥;;基于滑模觀測(cè)器的交流伺服電機(jī)無(wú)傳感器控制[J];電機(jī)與控制應(yīng)用;2015年04期

7 王偉;程明;張邦富;朱瑛;丁石川;;電流滯環(huán)型永磁同步電機(jī)驅(qū)動(dòng)系統(tǒng)的相電流傳感器容錯(cuò)控制[J];中國(guó)電機(jī)工程學(xué)報(bào);2012年33期

8 于泳;蔣生成;王高林;趙文龍;徐殿國(guó);;基于狀態(tài)觀測(cè)器的感應(yīng)電機(jī)速度傳感器故障診斷及容錯(cuò)控制[J];中國(guó)電機(jī)工程學(xué)報(bào);2012年18期

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