產(chǎn)品詳情
直流伺服電機的品種很多,根據(jù)磁場產(chǎn)生的方式,直流電機可分為他勵式、永磁式,并勵式、串勵式和復勵式五種。永磁式用氧化體、鋁鎳鈷、稀土鉆等軟磁性材料建立激磁磁場。在結構上,直流伺服電機有一般電樞式、無槽電樞式、印刷電樞式、繞線盤式和空心杯電樞式等,為避免電刷換向器的接觸,還有無刷直流伺服電機。根據(jù)控制方式,直流伺服電機可分為磁場控制方式和電樞控制方式。永磁直流伺服電機只能采用電樞控制方式,一般電磁式直流伺服電機大多也用電樞控制方式。
在數(shù)控機床中,進給系統(tǒng)常用的直流伺服電機主要有以下幾種:
1)小慣性直流伺服電機
小慣性直流伺服電機因轉動慣量小而得名。這類電機一般為永磁式,電樞繞組有無槽電樞式、印刷電樞式和空心杯電樞式三種。因為小慣量直流電機限度地減小電樞的轉動慣量,所以能獲得快的響應速度。在早期的數(shù)控機床上,這類伺服電機應用得比較多。
CV3700-3-S-B-G1-LD-V6 CV3700-5-S-B-G1-LD-V6 CV3700-10-S-B-G1-LD-V6 CV3700-15-S-B-G1-LD-V6 CV3700-20-S-B-G1-LD-V6 CV3700-25-S-B-G1-LD-V6 CV3700-30-S-B-G1-LD-V6 CV3700-40-S-B-G1-LD-V6 CV3700-45-S-B-G1-LD-V6 CV3700-50-S-B-G1-LD-V6 CV3700-60-S-B-G1-LD-V6 CV3700-70-S-B-G1-LD-V6 CV3700-80-S-B-G1-LD-V6 CV3700-90-S-B-G1-LD-V6 CV3700-100-S-B-G1-LD-V6 CV3700-120-S-B-G1-LD-V6 CV3700-140-S-B-G1-LD-V6 CV3700-160-S-B-G1-LD-V6 CV3700-180-S-B-G1-LD-V6 CV3700-200-S-B-G1-LD-V6 CV100-3-S-G1-LD-V9 CV100-5-S-G1-LD-V9 CV100-10-S-G1-LD-V9 CV100-15-S-G1-LD-V9 CV100-20-S-G1-LD-V9 CV100-25-S-G1-LD-V9 CV100-30-S-G1-LD-V9 CV100-40-S-G1-LD-V9 CV100-45-S-G1-LD-V9 CV100-50-S-G1-LD-V9 CV100-60-S-G1-LD-V9 CV100-70-S-G1-LD-V9 CV100-80-S-G1-LD-V9 CV100-90-S-G1-LD-V9 CV100-100-S-G1-LD-V9 CV100-120-S-G1-LD-V9 CV100-140-S-G1-LD-V9 CV100-160-S-G1-LD-V9 CV100-180-S-G1-LD-V9 CV100-200-S-G1-LD-V9 CV200-3-S-G1-LD-V9 CV200-5-S-G1-LD-V9 CV200-10-S-G1-LD-V9 CV200-15-S-G1-LD-V9 CV200-20-S-G1-LD-V9 CV200-25-S-G1-LD-V9 CV200-30-S-G1-LD-V9 CV200-40-S-G1-LD-V9 CV200-45-S-G1-LD-V9 CV200-50-S-G1-LD-V9 CV200-60-S-G1-LD-V9 CV200-70-S-G1-LD-V9 CV200-80-S-G1-LD-V9 CV200-90-S-G1-LD-V9 CV200-100-S-G1-LD-V9 CV200-120-S-G1-LD-V9 CV200-140-S-G1-LD-V9 CV200-160-S-G1-LD-V9 CV200-180-S-G1-LD-V9 CV200-200-S-G1-LD-V9 CV400-3-S-G1-LD-V9 CV400-5-S-G1-LD-V9 CV400-10-S-G1-LD-V9 CV400-15-S-G1-LD-V9 CV400-20-S-G1-LD-V9 CV400-25-S-G1-LD-V9 CV400-30-S-G1-LD-V9 CV400-40-S-G1-LD-V9 CV400-45-S-G1-LD-V9 CV400-50-S-G1-LD-V9 CV400-60-S-G1-LD-V9 CV400-70-S-G1-LD-V9 CV400-80-S-G1-LD-V9 CV400-90-S-G1-LD-V9 CV400-100-S-G1-LD-V9 CV400-120-S-G1-LD-V9 CV400-140-S-G1-LD-V9 CV400-160-S-G1-LD-V9 CV400-180-S-G1-LD-V9 CV400-200-S-G1-LD-V9
新聞:多倫縣返修臺用步進馬達28BYG5401產(chǎn)地
也可用兩組晶體管變流器構成可逆變流器,由于其功率方向可逆,可以進行再生運轉。平波回路在整流器整流后的直流電壓中,含有電源6倍頻率的脈動電壓,此外逆變器產(chǎn)生的脈動電流也使直流電壓變動。為了電壓波動,采用電感和電容吸收脈動電壓。裝置容量小時,如果電源和主電路構成器件有余量,可以省去電感采用簡單的平波回路。逆變器同整流器相反,逆變器是將直流功率變換為所要求頻率的交流功率,以所確定的時間使6個開關器件導通、關斷就可以得到3相交流輸出。
新聞:多倫縣返修臺用步進馬達28BYG5401產(chǎn)地
伺服電機,按照通常的區(qū)分劃分為步進電機、直流有刷伺服電機、直流無刷伺服電機、交流伺服電機,隨著科技的日益進步,很多特種伺服電機應運而生,比如壓電陶瓷電機、直線電機以及音圈電機,在這里我們主要講講通常意義下伺服電機的選擇。選擇什么樣的伺服電機,在很大程度上取決于負載的物理特性,負載的工作特性、系統(tǒng)要求以及工作環(huán)境。一旦系統(tǒng)要求確定后,無論選擇何種形式的伺服電機,首先要考慮的是選擇多大的電機合適,主要考慮負載的物理特性,包括負載扭矩、慣量等。在伺服電機中,通常以扭矩或者力來衡量電機大小,所以選電機首先要計算出折算到電機軸端負載扭矩或者力的大小。計算出扭矩以后需求留出一部分余量,一般選擇電機連續(xù)扭矩>=1.3倍負載扭矩,這樣能保證電機可靠的運行。除此外還需求計算折算到軸端負載慣量的大小,一般選擇負載慣量:電機轉子慣量<5:1,以保證伺服系統(tǒng)響應的快速性。假如出現(xiàn)電機和負載之間慣量,扭矩不匹配的情況,那么只能犧牲速度,在電機和負載間增加減速機了,這時你需求權衡。選擇出用多大扭矩的電機后,需求做的是了解負載的工作特性和工作環(huán)境。負載的工作特性包括如負載是高速還是低速運行,加速度需求達到多少,是否需求頻繁起停,頻率需求達到多少,系統(tǒng)運行精度等等。
新聞:多倫縣返修臺用步進馬達28BYG5401產(chǎn)地
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