我国城市建筑的快速发展促进了电梯的应用的普遍化,而电子科学技术的发展促进了电梯向着智能化方向不断进步。目前,由于可编程控制器技术和变频器技术在自动化控制过程中的高可靠性、便于操作且编程简单等特点而在电梯门机中得到了广泛的应用。目前,可编程控制器技术和变频调速技术的发展已经成为我国现代电梯行业发展的一个热点。这里,我们针对电梯门机中变频调速技术的应用进行了简单的介绍。 The rapid development of urban construction in China has promoted the generalization of the application of elevators, and the development of electronic science and technology has promoted the continuous improvement of elevators towards intelligence. At present, due to the features of high reliability, easy operation, and simple programming in the process of automatic control, programmable controller technology and frequency converter technology have been widely used in elevator door machines. At present, the development of programmable controller technology and frequency control technology has become a hot issue in the development of China’s modern elevator industry. Here, we have introduced a simple introduction to the application of variable frequency speed control technology in the elevator door machine.