恒思盛大生產(chǎn)的拉力試驗機所使用的馬達AC伺服控制馬達，它的壽命在正常使用情況下是可以使用15年。
Constant, grand production of motor AC servo motor used by tensile testing machine, its life is under normal use can use 15 years.
AC伺服控制馬達的優(yōu)點是：低噪音、低振動、外觀精致、安裝容易、品質保證，通過ISO9001的標準要求。
The advantage of AC servo motor is: low noise, low vibration, delicate appearance, easy installation, quality assurance, ISO9001 standard requirements.
AC伺服控制馬達的原理是檢測出隨著旋轉而時刻變化的旋轉位置，向線圈各相通入與磁極對應的電流。
The principle of AC servo motor is detected with the rotation of the rotation and time change position, all interlinked and the pole corresponding to the coil current.
由于磁極隨旋轉改變，流入的電流也發(fā)生變化，因此從結果上來看流入各相的電流為交流性的電流，大概就是這個原因而稱其為AC伺服電機。
Because of the magnetic pole change with rotation, the inflow of current also produces change, therefore on the results of it into every phase current of AC current, probably it is for this reason and called it a AC servo motor.
但是向該電機直接施加交流電壓并不能使其旋轉。DC伺服電機為保持持續(xù)旋轉需要切換電流方向的電刷，而AC伺服電機則不需要。
But applying voltage to the motor directly does not make it rotate. The DC servo motor to keep the continuous rotation need to switch the current direction of the brush, and AC servo motor is not required.
