Control method, control device and controller

A control method and position acquisition technology, applied in the direction of electric speed/acceleration control, etc., can solve problems affecting efficiency, mechanical speed cycle fluctuation of speed, etc.

Pending Publication Date: 2021-03-26
HANGZHOU XIANTU ELECTRONICS
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Problems solved by technology

[0002] In the compressor control of the current air conditioner, the inventor found that: due to the structural reasons of the compressor, the actual instantaneous speed of the compressor will fluctuate in the mechanical speed cycle during operatio

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  • Control method, control device and controller
  • Control method, control device and controller
  • Control method, control device and controller

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[0052] Next, the technical solutions in the embodiments of the present invention will be apparent from the embodiment of the present invention, and it is clearly described, and it is understood that the described embodiments are merely embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.

[0053] In the control of the air conditioner compressor, due to the structural cause of the compressor, during operation, the actual instantaneous speed of the compressor will exist in the mechanical speed cycle, not stable to the target speed; figure 1 As shown, when the motor control of the compressor uses a vector control of the sensor, it can be controlled in the motor speed, and the PLL (PhaselKedloop: phase-locked loop) is controlled. However, when PLL control is controlled by PI (ProPORTIONAL INTEGRAL: Poly Integral...

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Abstract

The embodiment of the invention provides a control method, a control device and a controller, which are used for controlling a motor. The control method comprises the steps: acquiring the position error mechanical frequency fluctuation quantity and the angular speed mechanical frequency fluctuation quantity; subtracting the position error from the mechanical frequency fluctuation quantity of the position error to obtain an updated position error; calculating a reckoning angular velocity according to the updated position error; superposing the angular velocity mechanical frequency fluctuation quantity to the reckoning angular velocity to obtain an updated angular velocity, and calculating the electrical angle position of the rotor according to the updated angular velocity; and carrying outthe motor control according to the updated angular speed and the electrical angle position of the rotor. According to the embodiment of the invention, feedforward compensation can be carried out on the estimated position error value of the motor, and the rotor position tracking capability is improved, so that the effect of improving the efficiency is achieved.

Description

technical field [0001] The present application relates to the technical field of electric control, and more specifically, relates to a control method, a control device and a controller for a motor. Background technique [0002] In the compressor control of the current air conditioner, the inventor found that: due to the structural reasons of the compressor, the actual instantaneous speed of the compressor will fluctuate in the mechanical speed cycle during operation, which is not stable at the target speed; due to the compressor speed There are fluctuations in the mechanical cycle, and the estimated rotational speed may have fluctuations in the mechanical rotational speed cycle that deviate from the actual position, thereby affecting efficiency. Contents of the invention [0003] In view of this, the embodiments of the present application provide a control method, a control device, and a controller, which can compensate the estimated position error value of the motor and i...

Claims

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Application Information

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IPC IPC(8): G05D13/62
CPCG05D13/62
Inventor 余水秀吕向前
Owner HANGZHOU XIANTU ELECTRONICS
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