Elevator traction machine control circuit, method, device and system, and storage medium

Abstract

The invention relates to an elevator traction machine control circuit, method, device and system, and a storage medium. The elevator traction machine control circuit comprises: a first sensor, wherein the first sensor obtains the magnetic field angle of a magnetic field generating device by detecting the direction of a magnetic field generated by the magnetic field generating device which is arranged on a rotor of the traction machine and rotates along with the rotor; a second sensor arranged beside a part, coaxially rotating with the rotor, on the traction machine and used for detecting the moving distance of the part; and a signal processor respectively connected with the first sensor and the second sensor, and used for being connected with a control loop of the traction machine. The signal processor periodically samples the magnetic field angle and the moving distance, and determines and outputs the position and the rotating speed of the rotor based on the magnetic field angle and the moving distance; and the position of the rotor and the rotating speed of the rotor are used for indicating a control loop of the traction machine to control the traction machine to perform closed-loop operation. The operation control cost of the traction machine can be effectively reduced.

Description

technical field [0001] The present application relates to the technical field of motor control, in particular to an elevator traction machine control circuit, method, device, system and storage medium. Background technique [0002] When the elevator traction machine is in closed-loop operation, the current rotor position of the motor needs to be fed back through the encoder. In order to obtain good elevator comfort, encoders with high resolution and precision are required. At present, photoelectric encoders are mainly used. Generally speaking, in order to meet the comfort standard, the pulse number of the encoder is required to reach more than 2^19pls / r (pulses / turn). And quickly give the compensation torque), then at least 2^20pls / r must be achieved. In addition, in order to obtain the rotor position of the motor when the power is turned on, it is generally required to use an encoder with rotor angle indication (such as with UVW phase information, or sine and cosine info...

AI Technical Summary

Problems solved by technology

However, the higher the number of pulses, the more code disc scales the photoelectric encoder has, and the more difficult it is to make, which leads to the problem of high cost of the encoder

At the same time, the current code disc with high pulse number is generally made of glass, which leads to the weak ability of the photoelectric encoder to deal with vibration and shock, and it is easy to damage

[0003] During the implementation process, the inventors found at least the following problems in the traditional technology: the operation control cost of the current elevator traction machine is too high, and the high-resolution photoelectric encoder of the traction machine is easily damaged

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