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When selects the direct current servosystem, it and the exchange servo have what difference?
Origin: Input time: 07-06-10 02:09:36English version

The direct current servo electrical machinery divides into has brushes with not brushes the electrical machinery.
Has brushes the electrical machinery cost lowly, structure simple, start torque big, velocity modulation scope wide, the control is easy, needs to maintain, but the maintenance convenience (trades carbon brush), has the electronmagetic interference, has the request to the environment. Therefore it may durably to be able the industry and uses the situation to cost sensitive Pu.
Not brushes the electrical machinery volume slightly, weight light, strives in a big way, responds quickly, speed high, inertia small, rotation smooth, the moment of force is stable. Controls complex, is easy to realize the intellectualization, its electronic 换相 way is flexible, may the square-wave 换相 or the sine 换相. The electrical machinery exempts the maintenance, the efficiency very high, operating temperature low, the electromagnetic radiation is very small, the long life, may use in a kind of environment.
The exchange servo electrical machinery also not brushes the electrical machinery, divides into synchronization and the asynchronous machine, at present in the movement control generally all uses the synchronous machine, its power scope is big, may achieve the very big power. The big inertia, the highest rotation speed is low, also but fast reduces along with power boosting. Thus suitablly makes the low speed steady movement the application.
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