Control system of automatic revolving door

Abstract

The invention discloses a control system of automatic revolving door. The control system, which adopts a closed-loop control structure formed by location, speed and current, comprises an input module, a closed loop and speed controller of door leaf, a speed governor, a first current regulator, a second current regulator, a reverse transformation module, a space vector pulse width modulator, a motor driven module, a current sampling module, a signal conversion module, a motor, and a module for calculation of pole location and speed of the motor; the control flow is: first, a setting signal is provided to the closed-loop control formed by location, speed, and current; second, the output signal of the closed-loop control goes through the space vector pulse width modulator and reverse transformation module and forms the three-phase AC signal of the drive motor; finally, terminal voltage and phase current of the motor are acquired by the sampling module and processed by the signal conversion module to be the feedback signal of the closed-loop control structure. The control system of automatic revolving door is energy saving and environmental friendly, low in noise, reliable in operation, easy to install and debug, and has the anti-clip function.

Description

technical field [0001] The invention relates to the field of automatic door technical equipment, in particular to an automatic revolving door control system. Background technique [0002] With the development of social economy, the advancement of science and technology and the gradual improvement of people's living standards, automatic revolving doors are increasingly used in enterprises and public places. With the expansion of the application field of revolving doors, the market demand for automatic revolving doors has increased, resulting in new requirements for the controllability and safety of the revolving door control system. In response to the call of the national scientific outlook on development, energy conservation and environmental protection have also become a top priority. [0003] Most of the revolving door control systems on the market use AC asynchronous motor control systems. There are the following deficiencies in technology: 1. AC asynchronous motors gen...

AI Technical Summary

Problems solved by technology

There are the following deficiencies in technology: 1. AC asynchronous motors generally adopt frequency conversion control, which has poor low-speed performance and low power factor, which is not conducive to energy saving and consumption reduction

2. The AC asynchronous motor control system adopts the inverter + PLC structure, the control system is complicated, the cost is high, and because the motor drive and the door control are separated, the output torque of the motor cannot be controlled. Therefore, in order to prevent the door leaf from pinching people, it is necessary to install many Sensing device, resulting in complex system and reduced reliability

3. When the door body is running, the noise and vibration are large, and the anti-interference performance is poor, which is not conducive to environmental protection

4. The control system of the revolving door with asynchronous motor is not suitable for other types of motors, resulting in limited selection of revolving door motors

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