Whole-speed range control method of position sensor of elevator door motor

A control method and elevator door machine technology, applied in the field of motors, can solve problems such as system chattering and time delay, affecting detection accuracy, and complex algorithms

Inactive Publication Date: 2015-05-06
宁波申菱机电科技股份有限公司
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Problems solved by technology

Among them, the direct calculation method belongs to the open-loop estimation, and the continuous change of the motor parameters during the operation will affect the detection accuracy.
The observer method also includes the sliding mode observer and the extended Kalman filter

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  • Whole-speed range control method of position sensor of elevator door motor
  • Whole-speed range control method of position sensor of elevator door motor
  • Whole-speed range control method of position sensor of elevator door motor

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to the following specific embodiments.

[0030] According to the motor given speed output by the position regulator, the sensorless control strategy of the full speed range of the door machine is divided into three stages: zero low speed range, transition switching range and medium and high speed range.

[0031] The zero low speed range control method is given by the d-axis current regulator The q-axis current regulator is given as the output of the speed controller, and the injection of high-frequency pulse vibration current to the door machine motor is completed through current closed-loop control;

[0032] Extract the output voltage signal of the current regulator and multiply it by the cosω of the same frequency h The t signal is modulated, and then the signal f related to the rotor position error is...

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Abstract

The invention discloses a whole-speed range control method of a position sensor of an elevator door motor. The method comprises the steps of injecting high-frequency pulse-vibrating current signals in an estimation coordinate system through a current closed-loop control in a scope of zero speed and under-speed, extracting information relevant to position errors to track the position and low-speed rotating speed of a rotor of the elevator door motor, and then using a variable gain S curve function and a novel sliding-mode observer to realize no sensor control in the high-speed scope. By adopting a weighting algorithm to complete smooth switching between low and high speed scopes. According to the no-sensor control in the whole speed scope of the door motor can be realized finally, and the mounting difficulty of the process installation of the door-motor system can be reduced; furthermore, the method has the advantages of wide scope of application, strong capacity of resisting disturbance, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a position sensorless control method in the full speed range of an elevator door machine. Background technique [0002] Nowadays, high-performance elevator door machine systems generally use permanent magnet synchronous motors with simple structure, small size, and high efficiency as door machine motors. The control strategies mainly use vector control and direct torque control; and they all require position sensors to provide accurate speed And rotor position feedback signal to achieve high-performance motor control, the mechanical sensor will inevitably bring many disadvantages, such as complex sensor installation process, poor anti-interference ability, high cost; significance. [0003] At present, there is no perfect control method that can realize position sensorless operation in the full speed range. The sensorless control methods for permanent magnet synchronous motors wit...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/14H02P21/04H02P21/13
Inventor 方环谷建军
Owner 宁波申菱机电科技股份有限公司
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