在(zai)考虑非(fei)(fei)正(zheng)弦(xian)(xian)电(dian)源(yuan)特性(xing)(xing)对变(bian)频电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)绝(jue)(jue)缘结(jie)构(gou)(gou)、振(zhen)(zhen)动、噪(zao)(zao)声(sheng)(sheng)和(he)冷却(que)方(fang)式的(de)(de)(de)(de)影(ying)响(xiang)时，需要(yao)(yao)注(zhu)意以(yi)下几点：1.绝(jue)(jue)缘结(jie)构(gou)(gou)：非(fei)(fei)正(zheng)弦(xian)(xian)电(dian)源(yuan)会引(yin)入更高的(de)(de)(de)(de)谐波分量和(he)峰(feng)值(zhi)电(dian)压(ya)，可(ke)(ke)能(neng)对电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)绝(jue)(jue)缘结(jie)构(gou)(gou)造成(cheng)额(e)外的(de)(de)(de)(de)压(ya)力。因此，需要(yao)(yao)确(que)(que)保(bao)电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)绝(jue)(jue)缘材(cai)料和(he)结(jie)构(gou)(gou)能(neng)够承(cheng)受这(zhei)些额(e)外的(de)(de)(de)(de)压(ya)力，以(yi)防止绝(jue)(jue)缘击(ji)穿(chuan)和(he)故(gu)障。2.振(zhen)(zhen)动：非(fei)(fei)正(zheng)弦(xian)(xian)电(dian)源(yuan)可(ke)(ke)能(neng)引(yin)入更高的(de)(de)(de)(de)电(dian)机(ji)(ji)(ji)(ji)(ji)振(zhen)(zhen)动，这(zhei)可(ke)(ke)能(neng)会对电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)运(yun)行稳定性(xing)(xing)和(he)寿命产生(sheng)负面(mian)(mian)影(ying)响(xiang)。因此，需要(yao)(yao)采取措施(shi)(shi)来(lai)(lai)减(jian)少振(zhen)(zhen)动，如使用减(jian)振(zhen)(zhen)装置(zhi)或(huo)(huo)优(you)(you)化电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)设计(ji)。3.噪(zao)(zao)声(sheng)(sheng)：非(fei)(fei)正(zheng)弦(xian)(xian)电(dian)源(yuan)可(ke)(ke)能(neng)会增加(jia)电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)噪(zao)(zao)声(sheng)(sheng)水(shui)平，这(zhei)可(ke)(ke)能(neng)对周围环(huan)境和(he)人(ren)员造成(cheng)不(bu)良影(ying)响(xiang)。因此，需要(yao)(yao)采取措施(shi)(shi)来(lai)(lai)降低(di)噪(zao)(zao)声(sheng)(sheng)水(shui)平，如使用隔(ge)音材(cai)料或(huo)(huo)优(you)(you)化电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)设计(ji)。4.冷却(que)方(fang)式：非(fei)(fei)正(zheng)弦(xian)(xian)电(dian)源(yuan)可(ke)(ke)能(neng)会导(dao)致电(dian)机(ji)(ji)(ji)(ji)(ji)产生(sheng)更多的(de)(de)(de)(de)热(re)量，因此需要(yao)(yao)确(que)(que)保(bao)电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)冷却(que)系统(tong)能(neng)够有效(xiao)地将热(re)量散发出去，以(yi)保(bao)持电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)正(zheng)常运(yun)行温度(du)。可(ke)(ke)以(yi)考虑增加(jia)散热(re)器的(de)(de)(de)(de)面(mian)(mian)积或(huo)(huo)采用更高效(xiao)的(de)(de)(de)(de)冷却(que)方(fang)式，如液(ye)冷系统(tong)。总之，考虑非(fei)(fei)正(zheng)弦(xian)(xian)电(dian)源(yuan)特性(xing)(xing)对变(bian)频电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)影(ying)响(xiang)时，需要(yao)(yao)注(zhu)意绝(jue)(jue)缘结(jie)构(gou)(gou)、振(zhen)(zhen)动、噪(zao)(zao)声(sheng)(sheng)和(he)冷却(que)方(fang)式等方(fang)面(mian)(mian)的(de)(de)(de)(de)问题，并采取相应(ying)的(de)(de)(de)(de)措施(shi)(shi)来(lai)(lai)保(bao)证电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)正(zheng)常运(yun)行和(he)可(ke)(ke)靠性(xing)(xing)。变(bian)频电(dian)机(ji)(ji)(ji)(ji)(ji)可(ke)(ke)以(yi)提高电(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)效(xiao)率和(he)节能(neng)。浙江自(zi)动化变(bian)频电(dian)机(ji)(ji)(ji)(ji)(ji)

HG500系列永(yong)磁电(dian)(dian)(dian)机(ji)(ji)使用(yong)(yong)驱动(dong)器(qi)(qi)(qi)具有(you)(you)以(yi)下特(te)点：1.适(shi)用(yong)(yong)于(yu)速(su)度(du)开环和(he)(he)闭环控制的(de)工业(ye)机(ji)(ji)械的(de)调速(su)和(he)(he)风机(ji)(ji)、水(shui)泵(beng)的(de)高(gao)效节能(neng)(neng)(neng)场合。2.功(gong)率范围(wei)广，可(ke)适(shi)用(yong)(yong)于(yu)0.75~630kW的(de)电(dian)(dian)(dian)机(ji)(ji)。3.采用(yong)(yong)速(su)度(du)传感器(qi)(qi)(qi)矢量驱动(dong)控制技术(SVC)，能(neng)(neng)(neng)够实现精确(que)的(de)速(su)度(du)控制。4.支持速(su)度(du)和(he)(he)转(zhuan)矩两种输出(chu)形(xing)式，可(ke)根据(ju)实际(ji)需(xu)求选择合适(shi)的(de)控制方式。5.支持扩(kuo)展(zhan)功(gong)能(neng)(neng)(neng)，可(ke)以(yi)通过安(an)装I/O扩(kuo)展(zhan)卡(ka)和(he)(he)通讯总线(xian)扩(kuo)展(zhan)卡(ka)来(lai)满足(zu)不同的(de)应用(yong)(yong)需(xu)求。6.具有(you)(you)多种保(bao)(bao)(bao)护(hu)(hu)(hu)功(gong)能(neng)(neng)(neng)，包括短路(lu)保(bao)(bao)(bao)护(hu)(hu)(hu)、过流(liu)保(bao)(bao)(bao)护(hu)(hu)(hu)、过压保(bao)(bao)(bao)护(hu)(hu)(hu)、欠压保(bao)(bao)(bao)护(hu)(hu)(hu)、输入输出(chu)缺(que)相保(bao)(bao)(bao)护(hu)(hu)(hu)、变(bian)频器(qi)(qi)(qi)过载(zai)保(bao)(bao)(bao)护(hu)(hu)(hu)、电(dian)(dian)(dian)机(ji)(ji)过载(zai)保(bao)(bao)(bao)护(hu)(hu)(hu)、驱动(dong)器(qi)(qi)(qi)过热保(bao)(bao)(bao)护(hu)(hu)(hu)等，能(neng)(neng)(neng)够有(you)(you)效保(bao)(bao)(bao)护(hu)(hu)(hu)电(dian)(dian)(dian)机(ji)(ji)和(he)(he)驱动(dong)器(qi)(qi)(qi)的(de)安(an)全(quan)运(yun)行。7.外(wai)观美观，具有(you)(you)高(gao)性能(neng)(neng)(neng)和(he)(he)功(gong)能(neng)(neng)(neng)强大的(de)特(te)点。本地变(bian)频电(dian)(dian)(dian)机(ji)(ji)公司变(bian)频电(dian)(dian)(dian)机(ji)(ji)具有(you)(you)较好的(de)自保(bao)(bao)(bao)护(hu)(hu)(hu)功(gong)能(neng)(neng)(neng)，能(neng)(neng)(neng)够自动(dong)检测和(he)(he)保(bao)(bao)(bao)护(hu)(hu)(hu)电(dian)(dian)(dian)机(ji)(ji)的(de)工作状态。

上海海光电(dian)(dian)机(ji)(ji)有限公司变(bian)频(pin)(pin)(pin)负(fu)责将电(dian)(dian)能(neng)转(zhuan)(zhuan)化为机(ji)(ji)械能(neng)。根(gen)(gen)据不同的(de)(de)应(ying)用(yong)需求，电(dian)(dian)动(dong)机(ji)(ji)可以是交(jiao)流(liu)电(dian)(dian)动(dong)机(ji)(ji)或直流(liu)电(dian)(dian)动(dong)机(ji)(ji)。变(bian)频(pin)(pin)(pin)器(qi)是变(bian)频(pin)(pin)(pin)电(dian)(dian)机(ji)(ji)的(de)(de)控制(zhi)部分，主要起(qi)到(dao)调(diao)节(jie)(jie)机(ji)(ji)械的(de)(de)频(pin)(pin)(pin)率(lv)与作用(yong)。它可以根(gen)(gen)据需要改(gai)变(bian)电(dian)(dian)源的(de)(de)频(pin)(pin)(pin)率(lv)，从(cong)而改(gai)变(bian)电(dian)(dian)动(dong)机(ji)(ji)的(de)(de)转(zhuan)(zhuan)速(su)和输(shu)出功率(lv)。变(bian)频(pin)(pin)(pin)器(qi)通过(guo)调(diao)节(jie)(jie)电(dian)(dian)源的(de)(de)频(pin)(pin)(pin)率(lv)和电(dian)(dian)压，控制(zhi)电(dian)(dian)动(dong)机(ji)(ji)的(de)(de)转(zhuan)(zhuan)速(su)和负(fu)载。变(bian)频(pin)(pin)(pin)电(dian)(dian)机(ji)(ji)的(de)(de)优点(dian)是可以根(gen)(gen)据实际需求灵活调(diao)节(jie)(jie)转(zhuan)(zhuan)速(su)和输(shu)出功率(lv)，提高能(neng)效和节(jie)(jie)能(neng)的(de)(de)效果。它广泛(fan)应(ying)用(yong)于工(gong)业(ye)生产细节(jie)(jie)中及家用(yong)电(dian)(dian)器(qi)里面(mian)。

上(shang)海海光电(dian)(dian)机(ji)(ji)有(you)限公(gong)司HG500系列永(yong)磁电(dian)(dian)机(ji)(ji)使(shi)用驱(qu)动器适(shi)用于速度(du)开环(huan)\闭环(huan)控(kong)制(zhi)(zhi)(zhi)的(de)(de)工(gong)业(ye)机(ji)(ji)械(xie)的(de)(de)调(diao)速和(he)风机(ji)(ji)、水(shui)泵的(de)(de)高效(xiao)(xiao)节能(neng)场合(he)(功(gong)(gong)(gong)率(lv)为0.75~630kW)。HG500系列永(yong)磁电(dian)(dian)机(ji)(ji)使(shi)用驱(qu)动器具(ju)有(you)以(yi)下特点：1.适(shi)用于速度(du)开环(huan)和(he)闭环(huan)控(kong)制(zhi)(zhi)(zhi)的(de)(de)工(gong)业(ye)机(ji)(ji)械(xie)的(de)(de)调(diao)速和(he)风机(ji)(ji)、水(shui)泵的(de)(de)高效(xiao)(xiao)节能(neng)场合(he)。2.功(gong)(gong)(gong)率(lv)范围广，可适(shi)用于0.75~630kW的(de)(de)电(dian)(dian)机(ji)(ji)。3.采用速度(du)传感器矢量驱(qu)动控(kong)制(zhi)(zhi)(zhi)技术(SVC)，能(neng)够实现精确的(de)(de)速度(du)控(kong)制(zhi)(zhi)(zhi)。4.支持速度(du)和(he)转(zhuan)矩两种输出形式(shi)，可根据实际(ji)需求选择合(he)适(shi)的(de)(de)控(kong)制(zhi)(zhi)(zhi)方式(shi)。5.支持扩(kuo)(kuo)展(zhan)功(gong)(gong)(gong)能(neng)，可以(yi)通(tong)过(guo)(guo)安装I/O扩(kuo)(kuo)展(zhan)卡(ka)和(he)通(tong)讯总线扩(kuo)(kuo)展(zhan)卡(ka)来满(man)足不同的(de)(de)应用需求。6.具(ju)有(you)多种保(bao)护功(gong)(gong)(gong)能(neng)，包括短路保(bao)护、过(guo)(guo)流保(bao)护、过(guo)(guo)压(ya)保(bao)护、欠压(ya)保(bao)护、输入输出缺相保(bao)护、变频器过(guo)(guo)载(zai)(zai)保(bao)护、电(dian)(dian)机(ji)(ji)过(guo)(guo)载(zai)(zai)保(bao)护、驱(qu)动器过(guo)(guo)热保(bao)护等(deng)，能(neng)够有(you)效(xiao)(xiao)保(bao)护电(dian)(dian)机(ji)(ji)和(he)驱(qu)动器的(de)(de)安全运行(xing)。7.外观(guan)美(mei)观(guan)，具(ju)有(you)高性能(neng)和(he)功(gong)(gong)(gong)能(neng)强大的(de)(de)特点。变频电(dian)(dian)机(ji)(ji)可以(yi)实现多种运行(xing)改进。

直接控(kong)制(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)(de)(de)(de)(de)转速。在(zai)每一个(ge)(ge)基(ji)本频(pin)率(lv)(lv)开始时(shi),脉冲极(ji)(ji)性从(cong)正(zheng)到(dao)负(fu)或从(cong)负(fu)到(dao)正(zheng),在(zai)这一时(shi)刻,电(dian)(dian)(dian)(dian)(dian)(dian)机(ji)绝缘(yuan)承受(shou)着一个(ge)(ge)二倍于(yu)(yu)(yu)(yu)尖峰(feng)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)值(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)全(quan)幅(fu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)。另(ling)外,在(zai)一个(ge)(ge)散嵌(qian)绕(rao)组的(de)(de)(de)(de)(de)(de)(de)(de)三相电(dian)(dian)(dian)(dian)(dian)(dian)机(ji)中(zhong),不(bu)同(tong)相的(de)(de)(de)(de)(de)(de)(de)(de)相邻二匝(za)之(zhi)间(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)极(ji)(ji)性可(ke)能会(hui)不(bu)同(tong),全(quan)幅(fu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)的(de)(de)(de)(de)(de)(de)(de)(de)跃变(bian)也有可(ke)能达到(dao)二倍于(yu)(yu)(yu)(yu)一个(ge)(ge)尖峰(feng)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)值(zhi)。据测试,PWM变(bian)频(pin)器输出的(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)波形(xing),在(zai)380/480V交(jiao)流系统(tong)中(zhong),在(zai)电(dian)(dian)(dian)(dian)(dian)(dian)机(ji)端测得的(de)(de)(de)(de)(de)(de)(de)(de)尖峰(feng)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)值(zhi)为～～。非常明显,在(zai)此全(quan)幅(fu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)作(zuo)用下,绕(rao)组匝(za)间(jian)(jian)产(chan)(chan)生表面局(ju)部(bu)放电(dian)(dian)(dian)(dian)(dian)(dian)。由于(yu)(yu)(yu)(yu)电(dian)(dian)(dian)(dian)(dian)(dian)离作(zuo)用,在(zai)气隙(xi)中(zhong)又(you)会(hui)产(chan)(chan)生空间(jian)(jian)电(dian)(dian)(dian)(dian)(dian)(dian)荷,从(cong)而(er)(er)形(xing)成一个(ge)(ge)与(yu)外加(jia)(jia)电(dian)(dian)(dian)(dian)(dian)(dian)场反向(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)感(gan)应电(dian)(dian)(dian)(dian)(dian)(dian)场。当(dang)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)极(ji)(ji)性改变(bian)时(shi),这个(ge)(ge)反向(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)场与(yu)外加(jia)(jia)电(dian)(dian)(dian)(dian)(dian)(dian)场方(fang)向(xiang)一致。这样(yang),一个(ge)(ge)更高的(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)场产(chan)(chan)生,它会(hui)导致局(ju)部(bu)放电(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)数量(liang)增(zeng)加(jia)(jia),**终引起(qi)击穿。测试表明,作(zuo)用于(yu)(yu)(yu)(yu)这些匝(za)间(jian)(jian)绝缘(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)冲击大(da)(da)(da)小取决于(yu)(yu)(yu)(yu)导线特定的(de)(de)(de)(de)(de)(de)(de)(de)性能和PWM驱动电(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)(de)(de)(de)(de)上升(sheng)时(shi)间(jian)(jian)。若上升(sheng)时(shi)间(jian)(jian)小于(yu)(yu)(yu)(yu)μs,则将有80%的(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)势加(jia)(jia)在(zai)绕(rao)组的(de)(de)(de)(de)(de)(de)(de)(de)前(qian)二匝(za)上,即上升(sheng)时(shi)间(jian)(jian)越短,电(dian)(dian)(dian)(dian)(dian)(dian)冲击就越大(da)(da)(da),匝(za)间(jian)(jian)绝缘(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)寿命就越短[1]。。当(dang)频(pin)率(lv)(lv)增(zeng)加(jia)(jia)时(shi),局(ju)部(bu)放电(dian)(dian)(dian)(dian)(dian)(dian)随(sui)之(zhi)增(zeng)加(jia)(jia),结果产(chan)(chan)生热(re)(re)量(liang),这些热(re)(re)量(liang)则引起(qi)更大(da)(da)(da)的(de)(de)(de)(de)(de)(de)(de)(de)漏电(dian)(dian)(dian)(dian)(dian)(dian)流,从(cong)而(er)(er)使Ni上升(sheng)更快,即电(dian)(dian)(dian)(dian)(dian)(dian)机(ji)温(wen)升(sheng)上升(sheng),绝缘(yuan)加(jia)(jia)速老化(hua)(hua)。总(zong)之(zhi),在(zai)变(bian)频(pin)电(dian)(dian)(dian)(dian)(dian)(dian)机(ji)中(zhong)正(zheng)是由于(yu)(yu)(yu)(yu)上述(shu)局(ju)部(bu)放电(dian)(dian)(dian)(dian)(dian)(dian)、电(dian)(dian)(dian)(dian)(dian)(dian)介(jie)质加(jia)(jia)热(re)(re)、空间(jian)(jian)电(dian)(dian)(dian)(dian)(dian)(dian)荷感(gan)应等(deng)因素的(de)(de)(de)(de)(de)(de)(de)(de)共同(tong)作(zuo)用引起(qi)电(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)线的(de)(de)(de)(de)(de)(de)(de)(de)过早损坏。变(bian)频(pin)电(dian)(dian)(dian)(dian)(dian)(dian)机(ji)具有较(jiao)高的(de)(de)(de)(de)(de)(de)(de)(de)智能化(hua)(hua)程度，能够实现远程监控(kong)和控(kong)制(zhi)，提(ti)高管理效(xiao)率(lv)(lv)。江苏常规(gui)变(bian)频(pin)电(dian)(dian)(dian)(dian)(dian)(dian)机(ji)多少钱

变(bian)频电机(ji)可以实现(xian)多种控制(zhi)策略。浙江自动化变(bian)频电机(ji)

变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)分(fen)析主要(yao)包括(kuo)以(yi)(yi)(yi)下几个方面：转速(su)调(diao)(diao)节范围(wei)：变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)可(ke)(ke)以(yi)(yi)(yi)实现的(de)(de)(de)(de)转速(su)调(diao)(diao)节范围(wei)，通(tong)常可(ke)(ke)以(yi)(yi)(yi)在额定转速(su)的(de)(de)(de)(de)10%至(zhi)200%之间(jian)进行(xing)调(diao)(diao)节。这(zhei)使得(de)变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)在不同的(de)(de)(de)(de)工况下能够(gou)灵(ling)活地适应转速(su)要(yao)求。能效(xiao)提升：由(you)于变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)可(ke)(ke)以(yi)(yi)(yi)根据负载需求调(diao)(diao)整(zheng)转速(su)，因此可(ke)(ke)以(yi)(yi)(yi)避免电(dian)(dian)(dian)(dian)机(ji)在低负载时的(de)(de)(de)(de)能量浪费。此外，变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)还可(ke)(ke)以(yi)(yi)(yi)通(tong)过(guo)调(diao)(diao)整(zheng)电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)功率因数来提高能效(xiao)。转矩控(kong)制(zhi)(zhi)：变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)可(ke)(ke)以(yi)(yi)(yi)通(tong)过(guo)变(bian)(bian)(bian)频(pin)器调(diao)(diao)整(zheng)电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)输出转矩。这(zhei)使得(de)变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)在启动(dong)(dong)、加速(su)和(he)减(jian)速(su)过(guo)程中能够(gou)提供(gong)更高的(de)(de)(de)(de)转矩，从(cong)而提高了(le)电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)动(dong)(dong)态性(xing)能。噪音和(he)振(zhen)动(dong)(dong)控(kong)制(zhi)(zhi)：由(you)于变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)可(ke)(ke)以(yi)(yi)(yi)实现平稳的(de)(de)(de)(de)启动(dong)(dong)和(he)停止，因此可(ke)(ke)以(yi)(yi)(yi)减(jian)少电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)噪音和(he)振(zhen)动(dong)(dong)。浙江自动(dong)(dong)化变(bian)(bian)(bian)频(pin)电(dian)(dian)(dian)(dian)机(ji)

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