【正文】
制系統(tǒng),并且輸入量是隨機(jī)的,不可預(yù)知的。 1 《自動控制原理》課程設(shè)計(簡明)任務(wù)書 —— 供 09級電氣工程與自動化專業(yè)學(xué)生用 引言:《自動控制原理》課程設(shè)計是該課程的一個重要教學(xué)環(huán)節(jié),既有別于畢業(yè)設(shè)計,更不同于課堂教學(xué)。 3. 利用根軌跡方法綜合系統(tǒng): ( 1) 畫出串聯(lián)校正結(jié)構(gòu)圖,分析并選擇串聯(lián)校正的類型( 微分 、積分和微分 積分校正); ( 2) 確定校正裝置傳遞函數(shù)的參數(shù); ( 3) 畫出校正后的系統(tǒng)的根軌跡圖,并校驗系統(tǒng)性能; 若不滿足,則重新確定校正裝置的參數(shù)。 位置隨動系統(tǒng)是反饋控制系統(tǒng),是閉環(huán)控制,調(diào)速系統(tǒng)的給定量是恒值,希望輸出量能穩(wěn)定,因此系統(tǒng)的抗干擾能力往往顯得十分重要??刂葡到y(tǒng)的數(shù)學(xué)模型是描述系統(tǒng)內(nèi)部物理量(或變量)之間關(guān)系的數(shù)學(xué)表達(dá)式。 關(guān)鍵字:隨動系統(tǒng) 性能分析 4 digest Servo system is to point to the output of the system with a certain the precision and speed of tracking input of the automatic control system, and is the input of random, unpredictable. In many cases, servo system special was charged with volume is mechanical displacement control system than also. Control the development of technology, make servo systems have been widely used. Position servo system is feedback control system, is the closedloop control and speed regulation system for the quantitative value is constant, want to output quantity can stable, so the antiinterference ability of the system often bee very important. And with the position of the position servo system instructions are often changes, requirement output accurate quantitative change to follow, the response of the output, flexibility and accuracy position servo system became the main features. In short, speed regulation system in dynamic index to antijamming performance is given priority to, servo system dynamic index to follow performance primarily. In the control system of the analysis and design, the first to establish the mathematical model of the system. The mathematical model of the control system is to describe the system internal parameters (or variables) of the relationship between the mathematical expressions. In automatic control theory, the mathematical model has a variety of forms. Commonly used in time domain of mathematical model of the ordinary differential equations, difference equation and state equation。 在圖 11 中,測速元件作為電路器 rR 和 CR 組成的橋式測量電路。此時 L??? ,表明輸出位移與輸入位移相對應(yīng)。與指令軸相連的是發(fā)送機(jī),與系統(tǒng)輸出軸相連的是接收機(jī)。功率放大器結(jié)構(gòu)圖可用圖 : )(1sU )(sUa 圖 兩相伺服電動機(jī): 列出其工作方程如下: 22 ( ) ( ) ()mmm m ad t d tT k u tdt dt???? ( 14) 根據(jù)( 14)對兩邊進(jìn)行拉普拉斯變換,可以求得其傳遞函數(shù): )(sG = mk /( mST +1)S (15) 因此可以得到伺服電機(jī)的結(jié)構(gòu)圖如下: ak ?k 8 au m?