【摘要】：當(dāng)前航空航天領(lǐng)域內(nèi)對(duì)超聲電機(jī),特別是行波型超聲電機(jī)(下文簡(jiǎn)稱超聲電機(jī))的需求越來越大。而超聲電機(jī)在使用過程中的非線性現(xiàn)象導(dǎo)致的問題越來越突出。目前亟待解決的超聲電機(jī)非線性問題是超聲電機(jī)工作在一定的扭矩負(fù)載(小于堵轉(zhuǎn)扭矩)狀況下會(huì)出現(xiàn)突然停機(jī)的現(xiàn)象。該文分別從振動(dòng)特性和電學(xué)特性分析了電機(jī)的驟�，F(xiàn)象,提出行波型超聲電機(jī)負(fù)載扭矩增加會(huì)導(dǎo)致電機(jī)定子阻尼和剛度同時(shí)增加,從而導(dǎo)致振動(dòng)阻尼比減小。電機(jī)定子振動(dòng)阻尼比減小會(huì)導(dǎo)致電機(jī)實(shí)際的共振頻率升高。同時(shí),負(fù)載增大會(huì)導(dǎo)致電機(jī)系統(tǒng)在同一頻率下的阻抗模減小,使得電機(jī)實(shí)際的共振頻率進(jìn)一步升高。電機(jī)驅(qū)動(dòng)頻率不變,當(dāng)電機(jī)實(shí)際的共振頻率升高并從低到高穿越電機(jī)驅(qū)動(dòng)頻率時(shí),超聲電機(jī)會(huì)出現(xiàn)驟�，F(xiàn)象。實(shí)驗(yàn)證明,負(fù)載扭矩增加導(dǎo)致電機(jī)系統(tǒng)阻尼比減小和電機(jī)系統(tǒng)阻抗模減小是影響到電機(jī)帶載驟停的根本原因。
[Abstract]:At present, the demand of ultrasonic motor, especially traveling wave ultrasonic motor (hereinafter referred to as ultrasonic motor) is increasing in the field of aeronautics and astronautics. The problem caused by the nonlinear phenomenon of ultrasonic motor is more and more prominent. At present, the nonlinear problem of ultrasonic motor is that the ultrasonic motor will stop suddenly under the condition of certain torque load (less than stop torque). In this paper, the phenomenon of sudden stop of motor is analyzed from the characteristics of vibration and electricity respectively. It is proposed that the increase of load torque of traveling wave ultrasonic motor will result in the increase of stator damping and stiffness, which will result in the decrease of vibration damping ratio. The reduction of stator vibration damping ratio will increase the actual resonance frequency of the motor. At the same time, the increase of the load will reduce the impedance mode of the motor system at the same frequency, and further increase the actual resonance frequency of the motor. The driving frequency of the motor is invariable. When the actual resonance frequency of the motor increases and passes through the drive frequency of the motor from low to high, the ultrasonic motor will appear sudden stop phenomenon. The experimental results show that the decrease of damping ratio of motor system and the decrease of impedance mode of motor system due to the increase of load torque are the fundamental reasons that affect the sudden stop of motor with load.
【作者單位】： 西北農(nóng)林科技大學(xué)機(jī)械與電子工程學(xué)院;機(jī)械結(jié)構(gòu)力學(xué)及控制國(guó)家重點(diǎn)實(shí)驗(yàn)室(南京航空航天大學(xué));
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(2015CB057501) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(2452017134) 中國(guó)博士后科學(xué)基金(2017M613217) 博士科研啟動(dòng)費(fèi)資助項(xiàng)目(2452016158)~~
【分類號(hào)】：TM359.9

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張鐵民;超聲電機(jī)快速響應(yīng)裝置的設(shè)計(jì)與分析[J];現(xiàn)代機(jī)械;2000年04期

2 趙淳生;21世紀(jì)超聲電機(jī)技術(shù)展望[J];振動(dòng).測(cè)試與診斷;2000年01期

3 楊淇,楊明,闕沛文;大力矩超聲電機(jī)[J];應(yīng)用聲學(xué);2001年03期

4 趙淳生;超聲電機(jī)技術(shù)的發(fā)展、應(yīng)用和未來[J];電氣時(shí)代;2001年03期

5 陳志華,趙淳生;超聲電機(jī)控制中的若干關(guān)鍵問題[J];微特電機(jī);2002年06期

6 趙淳生;面向21世紀(jì)的超聲電機(jī)技術(shù)[J];中國(guó)工程科學(xué);2002年02期

7 孫合明,趙淳生,朱曉東,高N，

本文編號(hào)：2411831