發(fā)布時(shí)間：2018-01-03 17:04

  本文關(guān)鍵詞：面向重型機(jī)床回轉(zhuǎn)工作臺(tái)的雙電機(jī)驅(qū)動(dòng)消隙控制技術(shù)　出處：《華中科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 重型機(jī)床 回轉(zhuǎn)工作臺(tái) 雙電機(jī)驅(qū)動(dòng) 傳動(dòng)消除間隙 動(dòng)力學(xué)仿真

【摘要】：重型機(jī)床的回轉(zhuǎn)工作臺(tái)常常采用齒輪傳動(dòng),使傳動(dòng)系統(tǒng)能夠在低速度下輸出高扭矩,但齒輪在設(shè)計(jì)、制造、裝配的過程中,不可避免要引入齒輪間隙。兩嚙合齒輪之間的間隙,降低了伺服系統(tǒng)的性能和精度。如果沒有采取適當(dāng)?shù)拇胧┫X輪間隙,會(huì)造成系統(tǒng)運(yùn)行不穩(wěn)定;與此同時(shí),剛性齒輪反向時(shí)會(huì)產(chǎn)生碰撞并伴隨著劇烈的振動(dòng)和噪音,這個(gè)在重型機(jī)床中尤為明顯。因此,齒輪間隙補(bǔ)償是高精度精密機(jī)床研究的重要組成部分。本文的主要內(nèi)容有:研究了各種常用的齒輪間隙模型,分析它們的特性和使用范圍,并描述了通過改進(jìn)機(jī)械結(jié)構(gòu)消除齒輪間隙的傳統(tǒng)方法;重點(diǎn)分析了雙電機(jī)驅(qū)動(dòng)系統(tǒng)消除齒輪間隙的機(jī)械原理及其控制方法。分析了雙電機(jī)驅(qū)動(dòng)系統(tǒng)的消隙過程及其受力情況,通過數(shù)學(xué)方式推導(dǎo)出回轉(zhuǎn)工作臺(tái)的雙電機(jī)驅(qū)動(dòng)消隙系統(tǒng)的動(dòng)力學(xué)模型。以雙電機(jī)驅(qū)動(dòng)消隙系統(tǒng)的動(dòng)力學(xué)模型為基礎(chǔ),并借鑒了西門子840D數(shù)控系統(tǒng)的消隙控制方式,構(gòu)建了雙電機(jī)控制系統(tǒng)Simulink仿真模型,并編寫了一個(gè)雙電機(jī)消隙的仿真軟件,通過仿真研究偏置力矩與消隙效果的關(guān)系。在某重型機(jī)床廠的回轉(zhuǎn)工作臺(tái)上進(jìn)行了齒輪間隙影響因素的實(shí)驗(yàn),在選擇偏置電流初值時(shí),可以先不考慮機(jī)床的速度與加速度值,設(shè)定偏置力矩初始值,然后可再根據(jù)現(xiàn)場機(jī)床實(shí)際情況進(jìn)行調(diào)整。根據(jù)仿真結(jié)果和試驗(yàn)驗(yàn)證,本文的理論和方法能夠滿足重型回轉(zhuǎn)工作臺(tái)的消隙要求。
[Abstract]:The rotary table of heavy machine often adopts gear transmission system, which can output high torque at low speed, but the gear in the design, manufacture, assembly process, inevitably into the gap. The gap between the two gear meshing gear, reduce the performance and precision of servo system. If you do not take appropriate measures to eliminate gear clearance, will cause the system unstable operation; at the same time, the rigid gear will produce reverse collision and accompanied by intense vibration and noise, the heavy machine is particularly evident. Therefore, gear backlash compensation is an important part of high precision machine tools. The main contents of this paper are: the study of gear gap model a variety of commonly used, analysis and use of the scope of their characteristics, and describes the traditional methods to improve the mechanical structure for eliminating gear clearance; focus on the analysis of the dual motor drive system The system eliminates the mechanical principle of gear gap and its control method. Analysis of the backlash process of dual motor drive system and its force, by way of mathematics derived double motor rotary table drive system dynamics model to eliminate the gap. Based on the dual motor driving dynamics model to eliminate the gap system as the foundation, and the backlash control SIEMENS 840D CNC system, construction of a dual motor control system Simulink simulation model, and the preparation of a dual motor backlash simulation software, through the simulation of relationship between bias torque and backlash effect. The experimental factors influence gear clearance in the rotary table of a heavy machine factory, in the choice of the initial bias current, can not consider the speed and acceleration of the machine set value, the initial value and bias torque, can be adjusted according to the actual situation of the machine according to the simulation results. It is proved by the experiment that the theory and method of this paper can meet the clearance requirements of the heavy rotary table.

【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TG502.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 廖洪波;范大鵬;范世s，

本文編號：1374785