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杨华勇

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期刊论文

Computational simulation and experimental research on speed control of VVVF hydraulic elevator

杨华勇Yang Huayong Jian Yang* Xu Bing

Control Engineering Practice 0 (▍▍▍)▍▍▍-▍▍▍,-0001,():

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摘要/描述

This paper discusses and analyses the speed control of variable voltage variable frequency (VVVF) hydraulic elevator. The computational models of the control system are established. Numerical simulations are carried out with the SIMULINK of MATLAB. PID control law is adopted in experiments because the PID control algorithm is simple in operation, and is characteristic of good computer real-time control. It also possesses good adaptability when the parameters of the controlled object are changed. Experiments are also carried out for the upward and downward running speed of the VVVF hydraulic elevator. Computational simulations coincide with experimental results in general. The results of both simulations and experiments show that serious flutter occurs at the start-up of the VVVF hydraulic elevator, and there is an oscillating phenomenon in the system. During the start-up of the VVVF hydraulic elevator, the system absorbs elastic energy when static friction is changed to dynamic friction. This results in the oscillations after starting.

【免责声明】以下全部内容由[杨华勇]上传于[2005年05月19日 22时19分22秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

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