The first one analyzed composing and working principal about low speed control system of principal axis.

第一部分，对主轴低速控制系统的构成及工作原理进行分析。

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The whole control system is digital integration, the speed of all kinds of protective actions is fast, the fault rate of the complete machine is low and the lifetime is long.

整个控制系统均为数字集成化，各种保护动作速度快，整机的故障率低，寿命长。

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Speed regulation system using cascade control method with thyristor is a low-cost system, but the classic system has some shortages, such as low power factor, serious harmonic pollution and etc.

晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。

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Its no-contact drive system uses an advanced low-noise motor and geared belt to ensure control over speed while filtering out vibration.

FORBES: EAR Disc Master Turntable