1. 伺(Si)服(Fu)电(Dian)机(Ji)
伺(Si)服(Fu)电(Dian)机(Ji)广(Guang)泛(Fan)应(Ying)用(Yong)于(Yu)各(Ge)种(Zhong)控(Kong)制(Zhi)系(Xi)统(Tong)中(Zhong),(?)能(Neng)将(Jiang)输(Shu)入(Ru)的(De)电(Dian)压(Ya)信(Xin)号(Hao)转(Zhuan)换(Huan)为(Wei)电(Dian)机(Ji)轴(Zhou)上(Shang)的(De)机(Ji)械(Xie)输(Shu)出(Chu)量(Liang),(?)拖(Tuo)动(Dong)被(Bei)控(Kong)制(Zhi)元(Yuan)件(Jian),(?)从(Cong)而(?)达(Da)到(Dao)控(Kong)制(Zhi)目(Mu)的(De)。(?)一(Yi)般(Ban)地(Di),(?)伺(Si)服(Fu)电(Dian)机(Ji)要(Yao)求(Qiu)电(Dian)机(Ji)的(De)转(Zhuan)速(Su)要(Yao)受(Shou)所(Suo)加(Jia)电(Dian)压(Ya)信(Xin)号(Hao)的(De)控(Kong)制(Zhi);转(Zhuan)速(Su)能(Neng)够(Gou)随(Sui)着(Zhuo)所(Suo)加(Jia)电(Dian)压(Ya)信(Xin)号(Hao)的(De)变(Bian)化(Hua)而(?)连(Lian)续(Xu)变(Bian)化(Hua);转(Zhuan)矩(Ju)能(Neng)通(Tong)过(Guo)控(Kong)制(Zhi)器(Qi)输(Shu)出(Chu)的(De)电(Dian)流(Liu)进(Jin)行(Xing)控(Kong)制(Zhi);电(Dian)机(Ji)的(De)反(Fan)映(Ying)要(Yao)快(Kuai)、(?)体(Ti)积(Ji)要(Yao)小(Xiao)、(?)控(Kong)制(Zhi)功(Gong)率(Lu)要(Yao)小(Xiao)。(?)伺(Si)服(Fu)电(Dian)机(Ji)主(Zhu)要(Yao)应(Ying)用(Yong)在(Zai)各(Ge)种(Zhong)运(Yun)动(Dong)控(Kong)制(Zhi)系(Xi)统(Tong)中(Zhong),(?)尤(You)其(Qi)是(Shi)随(Sui)动(Dong)系(Xi)统(Tong)。(?)陕(Shan)西(Xi)电(Dian)机(Ji)
伺(Si)服(Fu)电(Dian)机(Ji)有(You)直(Zhi)流(Liu)和(He)交(Jiao)流(Liu)之(Zhi)分(Fen),(?)最(Zui)早(Zao)的(De)伺(Si)服(Fu)电(Dian)机(Ji)是(Shi)一(Yi)般(Ban)的(De)直(Zhi)流(Liu)电(Dian)机(Ji),(?)在(Zai)控(Kong)制(Zhi)精(Jing)度(Du)不(Bu)高(Gao)的(De)情(Qing)况(Kuang)下(Xia),(?)才(Cai)采(Cai)用(Yong)一(Yi)般(Ban)的(De)直(Zhi)流(Liu)电(Dian)机(Ji)做(Zuo)伺(Si)服(Fu)电(Dian)机(Ji)。(?)当(Dang)前(Qian)随(Sui)着(Zhuo)永(Yong)磁(Ci)同(Tong)步(Bu)电(Dian)机(Ji)技(Ji)术(Shu)的(De)飞(Fei)速(Su)发(Fa)展(Zhan),(?)绝(Jue)大(Da)部(Bu)分(Fen)的(De)伺(Si)服(Fu)电(Dian)机(Ji)是(Shi)指(Zhi)交(Jiao)流(Liu)永(Yong)磁(Ci)同(Tong)步(Bu)伺(Si)服(Fu)电(Dian)机(Ji)或(Huo)者(Zhe)直(Zhi)流(Liu)无(Wu)刷(Shua)电(Dian)机(Ji)。(?)
2. 步(Bu)进(Jin)电(Dian)机(Ji)
所(Suo)谓(Wei)步(Bu)进(Jin)电(Dian)机(Ji)就(Jiu)是(Shi)一(Yi)种(Zhong)将(Jiang)电(Dian)脉(Mai)冲(Chong)转(Zhuan)化(Hua)为(Wei)角(Jiao)位(Wei)移(Yi)的(De)执(Zhi)行(Xing)机(Ji)构(Gou);更(Geng)通(Tong)俗(Su)一(Yi)点(Dian)讲(Jiang):(?)当(Dang)步(Bu)进(Jin)驱(Qu)动(Dong)器(Qi)接(Jie)收(Shou)到(Dao)一(Yi)个(Ge)脉(Mai)冲(Chong)信(Xin)号(Hao),(?)它(Ta)就(Jiu)驱(Qu)动(Dong)步(Bu)进(Jin)电(Dian)机(Ji)按(An)设(She)定(Ding)的(De)方(Fang)向(Xiang)转(Zhuan)动(Dong)一(Yi)个(Ge)固(Gu)定(Ding)的(De)角(Jiao)度(Du)。(?)我(Wo)们(Men)可(Ke)以(Yi)通(Tong)过(Guo)控(Kong)制(Zhi)脉(Mai)冲(Chong)的(De)个(Ge)数(Shu)来(Lai)控(Kong)制(Zhi)电(Dian)机(Ji)的(De)角(Jiao)位(Wei)移(Yi)量(Liang),(?)从(Cong)而(?)达(Da)到(Dao)精(Jing)确(Que)定(Ding)位(Wei)的(De)目(Mu)的(De);同(Tong)时(Shi)还(Huan)可(Ke)以(Yi)通(Tong)过(Guo)控(Kong)制(Zhi)脉(Mai)冲(Chong)频(Pin)率(Lu)来(Lai)控(Kong)制(Zhi)电(Dian)机(Ji)转(Zhuan)动(Dong)的(De)速(Su)度(Du)和(He)加(Jia)速(Su)度(Du),(?)从(Cong)而(?)达(Da)到(Dao)调(Diao)速(Su)的(De)目(Mu)的(De)。(?)目(Mu)前(Qian),(?)比(Bi)较(Jiao)常(Chang)用(Yong)的(De)步(Bu)进(Jin)电(Dian)机(Ji)包(Bao)括(Kuo)反(Fan)应(Ying)式(Shi)步(Bu)进(Jin)电(Dian)机(Ji)((?)VR)(?)、(?)永(Yong)磁(Ci)式(Shi)步(Bu)进(Jin)电(Dian)机(Ji)((?)PM)(?)、(?)混(Hun)合(He)式(Shi)步(Bu)进(Jin)电(Dian)机(Ji)((?)HB)(?)和(He)单(Dan)相(Xiang)式(Shi)步(Bu)进(Jin)电(Dian)机(Ji)等(Deng)。(?)