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Steering gear and motor driving circuit thereof

A technology of motor drive circuit and steering gear, which is applied in the electronic field, can solve the problems of large external radiation of the steering gear, and achieve the effects of weakening electromagnetic radiation, reducing external radiation, and reducing the opening speed

Pending Publication Date: 2018-03-30
UBTECH ROBOTICS CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a steering gear and its motor drive circuit, aiming to solve the problem of large external radiation of the existing steering gear

Method used

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  • Steering gear and motor driving circuit thereof
  • Steering gear and motor driving circuit thereof
  • Steering gear and motor driving circuit thereof

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] It should be noted that the term "comprising" and any variations thereof in the description and claims of the present invention are intended to cover non-exclusive inclusion. For example, a process, method or system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally further includes Other steps or units inherent in these processes, methods, products or apparatus. In addition, the terms "first", "second", and "third", etc. are used to distinguish different objects, not ...

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Abstract

An embodiment of the invention discloses a steering gear and a motor driving circuit thereof. The motor driving circuit comprises a driving unit, three switch units with same structures and three switch control units with same structures. The switch units are connected between three output ends of the driving unit and three-phase input ends of a motor respectively, and are used for controlling connection and disconnection of three-phase circuits of the motor according to driving signals output by the driving unit. The switch control units are connected between three output ends of the drivingunit and the three switch units respectively, and are used for reducing starting speeds of switch tubes of the three switch units. The steering gear and the motor driving circuit thereof have the advantages that the switch control units for reducing the starting speeds of the switch tubes are connected between the driving unit and the switch units, so that the starting speeds of the switch tubes are reduced, electromagnetic radiation generated during working of the switch units is weakened, and external radiation of the steering gear is reduced.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a steering gear and a motor driving circuit thereof. Background technique [0002] The steering gear is a kind of angle servo drive, which is suitable for the control system that needs to change the angle and can keep it, such as in the robot. The core components of the steering gear include the motor, which is used to rotate under the drive of the driver chip, and then drive the steering gear to work. Most of the existing servos use brushless DC motors. In order to drive the brushless DC motors to rotate, a switch tube is usually installed at the three-phase input end of the brushless DC motor. The switch tube is used to control the motor under the control of the drive chip. The on-off of the three-phase path is controlled, and then the commutation of the motor is realized to achieve the purpose of controlling the rotation of the motor. [0003] However, since the switch t...

Claims

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Application Information

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IPC IPC(8): H02P6/15
CPCH02P6/15
Inventor 熊友军柳冬张礼富赵计高
Owner UBTECH ROBOTICS CORP LTD
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