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Motor control method and device, motor and power tool

A technology of motor control and electric tools, applied in the field of control, can solve problems such as unstable motor operation, sudden change in estimated angle, and unevenness, and achieve the effects of stable operation, smooth angle output, and reduced noise

Active Publication Date: 2022-07-08
SHANGHAI SINOMCU MICROELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the current angle estimation technology based on the Hall sensor has sudden changes in the estimated angle and uneven phenomena, which makes the motor run unstable and inefficient.

Method used

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  • Motor control method and device, motor and power tool
  • Motor control method and device, motor and power tool
  • Motor control method and device, motor and power tool

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Embodiment Construction

[0043] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures denote elements that have the same or similar functions. While various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0044] In the description of the present disclosure, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and It is not indicated or implied that the indicated device or element must have a particular orientation, be constr...

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Abstract

The present disclosure relates to a motor control method and device, a motor and a power tool. The method includes: acquiring a Kth input rotor angle and a first output rotor angle corresponding to the K-1th input rotor angle, where K≥1 and is Integer; obtain the angle difference according to the Kth input rotor angle and the first output rotor angle; adjust the angle difference to obtain the angle increment; obtain the Kth input rotor according to the angle increment The second output rotor angle corresponding to the angle; and the magnetic field steering control of the motor is performed according to the second output rotor angle. The embodiment of the present disclosure can obtain a smoother angle output, reduce the noise when the motor is running, and obtain a more stable torque output, so that the motor runs stably and has high efficiency.

Description

technical field [0001] The present disclosure relates to the technical field of control, and in particular, to a motor control method and device, a motor and an electric tool. Background technique [0002] Hall sensors can detect magnetic fields and their changes, and can be used in various fields related to magnetic fields. Hall sensors are based on the Hall effect and have many advantages. Their structure is firm, small in size, light in weight, long in life, easy in installation, low in power consumption, high in frequency (up to 1MHZ), resistant to vibration and not afraid of dust , oil pollution, water vapor and salt spray pollution or corrosion, etc., play an important role in the motor. [0003] However, the current angle estimation technology based on the Hall sensor has the phenomenon of sudden change in the estimated angle and unevenness, which makes the motor run unstable and has low efficiency. SUMMARY OF THE INVENTION [0004] According to an aspect of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/18H02P21/00H02P21/05H02P21/06H02P6/10H02P25/026
CPCH02P21/18H02P21/0003H02P21/05H02P21/06H02P6/10H02P25/026H02P2207/05Y02T10/72
Inventor 丛凤龙张文荣包旭鹤
Owner SHANGHAI SINOMCU MICROELECTRONICS
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