本文選題：電磁鐵 + 控制　； 參考：《太原理工大學(xué)》2015年碩士論文

【摘要】：本質(zhì)安全型電磁鐵是液壓支架電磁換向閥的動力元件。這種電磁鐵雖然結(jié)構(gòu)簡單,但由于內(nèi)部磁路復(fù)雜、導(dǎo)磁材料非線性和溫度變化等因素影響,使得其設(shè)計變得復(fù)雜困難。為促進(jìn)本質(zhì)安全型電磁鐵的研究，急需開發(fā)一套操作方便，測量準(zhǔn)確的測試系統(tǒng)。 本課題受山西省科技重大專項(xiàng)—綜采液壓支架電液控制閥研發(fā)（編號：20111101025）資助，成功開發(fā)出了能測量電磁鐵電流—位移—力靜態(tài)特性和動態(tài)響應(yīng)特性的測試臺。該測試臺由控制模塊和數(shù)據(jù)采集模塊構(gòu)成，本文主要研究測試臺的控制方案。 本文對伺服運(yùn)動滑臺進(jìn)行受力分析，建立數(shù)學(xué)模型，然后將模型導(dǎo)入到MATLAB/Simulink軟件中進(jìn)行時域和頻域仿真分析，分析了系統(tǒng)的穩(wěn)定性和響應(yīng)特性，，并對系統(tǒng)進(jìn)行優(yōu)化校正。 基于電磁鐵靜態(tài)特性測量，課題采用“撞擊法”尋找電磁鐵頂桿零點(diǎn)位置，使用“二分迭代法”和“點(diǎn)滴步進(jìn)法”相互結(jié)合的滑臺運(yùn)動方案對力傳感器變形進(jìn)行補(bǔ)償以實(shí)現(xiàn)精確控制頂桿伸出位置。實(shí)驗(yàn)結(jié)果表明“撞擊法”尋得的頂桿零點(diǎn)位置誤差小于0.002mm，頂桿伸出長度的控制偏差小于±0.01mm�！岸值ā焙汀包c(diǎn)滴步進(jìn)法”相互結(jié)合的滑臺運(yùn)動方案吸收了“二分法”在電磁鐵頂桿伸出較短、電磁力變化平順時是測量速度快的優(yōu)點(diǎn)，彌補(bǔ)了頂桿伸出較長、電磁力變化劇烈時測量收斂難，用時長的缺點(diǎn)。使用這種方法，測試臺完成一次測量需要9分鐘�；陔姶盆F動態(tài)響應(yīng)測量，測試臺采用自動移動滑臺安裝傳感器到指定位置，其工作方式和靜態(tài)測量時尋找電磁鐵頂桿零點(diǎn)相似。
[Abstract]:Intrinsically safe electromagnet is the power element of electromagnetic directional valve in hydraulic support. Although the structure of the electromagnet is simple, it is difficult to design because of the complex internal magnetic circuit, nonlinear magnetic material and temperature change. In order to promote the research of intrinsically safe electromagnet, it is urgent to develop a set of test system which is easy to operate and accurate in measurement. The research and development of electro-hydraulic control valve for fully mechanized coal mining hydraulic support (No. 1: 20111101025) is supported by Shanxi province science and technology major project. The test bench which can measure the electromagnet current-displacement-force static characteristic and dynamic response characteristic has been developed successfully. The test bench consists of control module and data acquisition module. In this paper, the force of the servo sliding table is analyzed, the mathematical model is established, and then the model is introduced into the MATLAB/Simulink software for the time-domain and frequency-domain simulation analysis. The stability and response characteristics of the system are analyzed, and the system is optimized and corrected. Based on the measurement of the static characteristics of electromagnets, the "impact method" is used to find the zero position of the top rod of the electromagnet. The sliding table motion scheme which is combined with "dichotomous iteration method" and "drop step method" is used to compensate the deformation of the force sensor in order to accurately control the protruding position of the top rod. The experimental results show that the zero position error of the top rod is less than 0.002mm and the control deviation of the protruding length of the top rod is less than 鹵0.01mm. The sliding platform motion scheme which combines "dichotomous iteration method" and "drip-step method" absorbs the advantage of "dichotomy" when the top rod of the electromagnet reaches out shorter and the electromagnetic force changes smoothly is the advantage of fast measuring speed and makes up for the longer protruding of the top rod. When the electromagnetic force changes violently, it is difficult to measure convergence, and the disadvantage of using time is long. Using this method, the test table takes 9 minutes to complete a measurement. Based on the measurement of the dynamic response of the electromagnet, the automatic moving slide platform is used to install the sensor to the specified position, and its working mode is similar to that of finding the zero point of the top rod of the electromagnet in the static measurement.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD355.4

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