Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method capable of feeding back locked-rotor signal of claw-pole stepping motor

A stepper motor and claw pole technology, which is applied in the direction of motor generator control, electrical components, and control/drive circuit connection, etc., can solve the problem that stepper motors do not have a stall feedback function, affect user experience, and have complex structures and other problems, to achieve the effect of eliminating over-step rotation, simplifying the structure, and halving the number of coils

Pending Publication Date: 2021-06-22
ZHONGSHAN HUILIPU MOTOR
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing stepper motors do not have a stall feedback function, so when controlling the swing angle of the damper, especially the control of the swing angle of the air-conditioning damper, the stepper motor needs to execute the set number of rotation pulses, so when the damper is not fully opened When the close command is received under the condition that the damper is completely closed, the remaining rotation pulses still need to be executed, or when the opening command is received when the damper is not completely closed, the remaining rotation pulses still need to be executed after the damper is fully opened, As a result, the motor appears over-step rotation; at the same time, most of the existing stepping motors used for air-conditioning dampers are driven by rectangular pulse waves, and the rotation is relatively rigid. When the stepping motor occurs over-stepping, it is easy to generate large noise, which affects the user experience; On the one hand, there are four coils inside the existing motor of this type, and the structure is complex

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method capable of feeding back locked-rotor signal of claw-pole stepping motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A further detailed description will be made below in conjunction with the accompanying drawings and embodiments of the present invention:

[0019] Such as figure 1 As shown, a method that can feed back the locked-rotor signal of the claw-pole stepping motor, the steps are as follows:

[0020] Step a, the control device 2 sends a damper opening or closing control signal to the stepper motor subdivision drive circuit 3;

[0021] Step b, the stepper motor subdivision drive circuit 3 sends a PWM modulation signal to the stepper motor body 1 to generate a sine wave drive current to make the stepper motor body 1 rotate, and detect the operating current of the stepper motor body 1; wherein the stepper motor body 1 is a two-phase stepping motor, and the stepping motor subdivision drive circuit 3 converts the original unipolar pulse mode to generate a similar sine wave current to drive the main body of the stepping motor 1, so as to realize the smooth rotation and opening and c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method capable of feeding back a locked-rotor signal of a claw-pole stepping motor. The stepping motor is provided with a stepping motor subdivision driving chip, when an air door opening or closing instruction is received, the stepping motor subdivision driving chip outputs a subdivision PWM modulation signal to a stepping motor coil, so that the stepping motor obtains a sine wave current, and gentle rotation is achieved. Meanwhile, when it is detected that the working current of the stepping motor is larger than the maximum set value, an air door is completely opened or closed, so that rotation of the stepping motor is blocked, the stepping motor subdivision driving circuit stops outputting the PWM modulation signal to the stepping motor, and vibration noise generated by stepping of the air door motor is eliminated; and by adopting the method, the number of coils in the motor is halved, the structure of a user main control board is simplified, and the manufacturing cost is reduced.

Description

[technical field] [0001] The invention relates to a method capable of feeding back a locked-rotor signal of a claw pole type stepping motor. [Background technique] [0002] Existing stepper motors do not have the stall feedback function, so when controlling the swing angle of the damper, especially the control of the swing angle of the air-conditioning damper, the stepper motor needs to execute the set number of rotation pulses, so when the damper is not fully opened When the closing command is received under the condition that the damper is completely closed, the remaining rotation pulses still need to be executed, or when the opening command is received when the damper is not completely closed, the remaining rotation pulses still need to be executed after the damper is fully opened, As a result, the motor appears over-step rotation; at the same time, most of the existing stepping motors used for air-conditioning dampers are driven by rectangular pulse waves, and the rotati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02P8/36H02P8/12H02K11/33
CPCH02P8/36H02P8/12H02K11/33
Inventor 蓝小荔周念祖尹传胜吴招军王守生王宇
Owner ZHONGSHAN HUILIPU MOTOR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com