Discusses the problems existing in the door motor of elevator, puts forward the system project which takes DSP digital signal processing technology as core, DC brushless motor as driver.

探讨了目前电梯门机系统存在的问题，提出了应用DSP数字信号处理技术为核心，无刷直流电机为驱动机的系统方案。

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This article introduces current energy-saving background of elevator industry, simple description of the Delta IED Integrated System of energy-saving technology and application case.

本文重点介绍目前电梯行业的节能背景，简单描述台达IED一体化系统的节能技术以及应用案例。

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Hydraulic elevator is a typical electrohydraulic control system, and the speed feedback control method is advanced technology.

液压电梯是一种典型的电液速度控制系统，直接轿厢速度反馈控制是一项先进的技术。

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