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数控系统的振荡现象已成为数控全闭环系统的共同性问题。系统振荡时会造成机床产生爬行与振动故障,尤其在卧式带立柱的轴和旋转数控工作台轴其系统出现振荡的频率较高。该问题已成为影响数控车床正常使用的重要因素之一。
精(jing)机(ji)数控 车床发生(sheng)谐振的缘故:
数控(kong)(kong)(kong)(kong)磨床(chuang)数控(kong)(kong)(kong)(kong)磨床(chuang)的(de)(de)(de)(de)自(zi)激(ji)自(zi)激(ji)振(zhen)荡(dang)常见(jian)故障往(wang)往(wang)发生(sheng)在自(zi)动化机械设备角(jiao)度和进(jin)(jin)给(ji)台(tai)达(da)步(bu)进(jin)(jin)驱动器(qi)(qi)电(dian)机控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)(qi)控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)(qi)设计(ji)的(de)(de)(de)(de)。产(chan)生(sheng)自(zi)激(ji)自(zi)激(ji)振(zhen)荡(dang)的(de)(de)(de)(de)现(xian)象有一大(da)堆,陈(chen)了自(zi)动化机械设备角(jiao)度产(chan)生(sheng)没(mei)法(fa)解(jie)决的(de)(de)(de)(de)传输开距、弹(dan)力倾斜、磨擦(ca)摩擦(ca)力计(ji)算等众(zhong)多元素外,台(tai)达(da)步(bu)进(jin)(jin)驱动器(qi)(qi)电(dian)机控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)(qi)控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)(qi)设计(ji)的(de)(de)(de)(de)的(de)(de)(de)(de)相关技(ji)术参(can)数的(de)(de)(de)(de)损害也是重点(dian)的(de)(de)(de)(de)一角(jiao)度。台(tai)达(da)步(bu)进(jin)(jin)驱动器(qi)(qi)电(dian)机控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)(qi)控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)(qi)设计(ji)的(de)(de)(de)(de)有交流沟通和交流电(dian)之分(fen)。大(da)角(jiao)度数控(kong)(kong)(kong)(kong)磨床(chuang)数控(kong)(kong)(kong)(kong)磨床(chuang)选择的(de)(de)(de)(de)是全开环的(de)(de)(de)(de)方式,带来(lai)台(tai)达(da)步(bu)进(jin)(jin)驱动器(qi)(qi)电(dian)机控(kong)(kong)(kong𝓀)(kong)制(zhi)(zhi)器(qi)(qi)控(k✨ong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)(qi)设计(ji)的(de)(de)(de)(de)产(chan)生(sheng)振(zhen)动的(de)(de)(de)(de)现(xian)象可以有四类原因:
1.地位(wei)环(huan)欠佳又引发的转换相电压不稳定;
2.速(su)度快环黑(hei)心(xin)诱发的振动式;
3.步进驱动器(qi)机系(xi)统随(sui🍎)意(yi)调节精确𝓡定位器(qi)多少诱发线电压輸出模(mo)糊;
4.厂(chan𒆙g)(chang)家传动(dong)链(lian)厂(chang)(chang)家装(zhuang)如丝杆螺母腐蚀痕(hen൩)迹过(guo)大(da)了(le)。这抑制环的效果叁数(shu)值模糊或厂(chang)(chang)家厂(chang)(chang)家传动(dong)链(lian)安装(zhuang)腐蚀痕(hen)迹过(guo)大(da)了(le)全都(dou)是吸引(yin)震动(dong)幅度的主耍各种因(yin)素(su)。因(yin)此能够以在(zai)台(tai)达伺服(fu)电机抑制设备实行叁数(shu)值seo。
智能数控(kong)车清理(li)振荡器的(de)常(chang)规机制:
1.反馈控(kong)(kong)制步进驱(qu)动器设计出现(xian)的(de)自(zi)由(you)振(zhen)荡(dang)有很多数(shu)控(kong)(kong)加工中(zhong)心步进驱(qu)动器软(ruan)件(jian)运用的(de)是半开(kai)环(huan)控(kong)(kong)制装制,而(er)全开(kai)环(huan)控(kong)(konꦛg)制步进驱(qu)动器软(ruan)件(jian)一定要是在其布局半开(kai)环(huan)控(kong)(kong)制软(ruan)件(jian)不引发(fa)自(zi)由(you)振(zhen)荡(dang)的(de)本质(zhi)下来进行参数(shu)指标调低(di),以至于两者之(z♛hi)间包头小异。
2.削减座位环收获在系列(lie)伺服设备有(ജyou)(you)考虑的(de)规(gui)格值,有(you)(you)自(zi)由振(zhe🌼n)荡可有(you)(you)效降低(di)增益控制,但没法(fa)降太久(jiu),因(yin)要担保设备的(de)准稳态(tai)误差值。
3.降ꦚ(jiang)低了短路电(dian)流惯量比(bi)阻抗惯量比(bi)一般的制定在的发生抖动时应示因素表(biao)的70%时间,如并不(bu)(bu)能消减(jian)(jian)告警,不(bu)(bu)可不(bu)(bu)断缩(suo)减(jian)(jian)该(gai)因素表(biao)值。
4.进入(ru)比(bi)例表微积分(fen)查询器(PID)占(zhan)比(bi)微积分(fen)卡(ka)器是一个(ge)(ge)个(ge)(ge)多的(de)功能(nenไg)把控(kong)好器,它不只是能(neng)有郊地对工(gong)(gong)作交(jiao)流(liu)电(dian)(dian)线(xian)工(gong)(gong)作电(dian)(dian)压(ya)值(zhi)数据(ju)手机(ji)信(xin)(xin)号(hao)参与占(zhan)比(bi)收获(huo),还(hai)可手动设定节模(mo)拟打印输(shu)(shu)入(ru)输(shu)(shu)出(chu)(chu)数据(ju)手机(ji)信(xin)(xin)号(hao)落伍(wu)成拥(yong)有提(ti)前(qian)的(de)的(de)间题,自由(you)振荡常见故障一会儿因模(mo)拟打印输(shu)(shu)入(ru)输(shu)(shu)出(chu)(chu)工(gong)(gong)作交(jiao)流(liu)电(dian)(dian)线(xian)工(gong)(gong)作电(dian)(dian)压(ya)值(zhi)会出(chu)(chu)现落伍(wu)成拥(yong)有提(ti)前(qian)的(de)环境而产生,这时候可用(yong)PID来(lai)设定模(mo)拟打印输(shu)(shu)入(ru)输(shu)(shu)出(chu)(chu)工(gong)(gong)作交(jiao)流(liu)电(ওdian)(dian)线(xian)工(gong)(gong)作电(dian)(dian)压(ya)值(zhi)相(xiang)位。
5.通过低频可(ke)抑制工作以内谈(tan)话的(de)(de)是(shi)(shi)相关(guan)低頻谐振(zhen)(zhen)器时技术参数(shu)提(ti)高(gao)方(fang)式,而甚至有时候机械设(she)备(bei)制造程(cheng)序是(shi)(shi)因为机械设(she)备(bei)制造上某种(zhong)谐振(zhen)(zhen)器理由有了返馈(kui)走(zou)势中带(dai)(dai)有高(gao)頻谐波,这(zhei)使(shi)打出电(dian)(dian)动(dong)机扭(niu)矩里不稳态,最后有了振(zhen)(zhen)功。就类(lei)似这(zhei)些高(gao)頻谐振(zhen)(zhen)器原因,可(ke)在快慢环里加入(ru)一(yi)阶(jie)低通滤(lv)波部门,就是(shi)(shi)电(dian)(dian)动(dong)机扭(niu)矩滤(lv)波器。进程(cheng)提(ti)示与进程(cheng)评价(jia🦩)数(shu)据(ju)经进程(cheng)的(de)(de)管理开关(guan)转化率(lv)为电(dian)(dian)动(dong)机扭(niu)矩数(shu)据(ju),电(dian)(dian)动(dong)机扭(niu)矩数(sh💞u)据(ju)能(neng)够一(yi)阶(jie)滤(lv)波过程(cheng)将高(gao)頻带(dai)(dai)宽(kuan)度部分(fen)结(jie)束(shu)期(qi),最终(zhong)(zhong)得以达成(cheng)行之(zhi)有效的(de)(de)电(dian)(dian)动(dong)机扭(niu)矩的(de)(de)管理数(shu)据(ju)。能(neng)够调高(gao)性能(neng)可(ke)将机械设(she)备(bei)存在的(de)(de)100Hz上面(mian)的(de)(de)频带(dai)(dai)宽(kuan)度结(jie)束(shu)期(qi),最终(zhong)(zhong)得以达成(cheng)消掉高(gao)頻带(dai)(dai)宽(kuan)度振(zhen)(zhen)荡(dang)器的(de)(de)成(cheng)果(guo)。