Thermal protection control method and device for steering motor

A technology of steering motor and control method, applied in the direction of motor control, control system, electrical components, etc., can solve the problems of short service life of steering motor, unstable service life of steering motor, easy failure of steering motor, etc., so as to prolong the service life. , to ensure the effect of work stability

Pending Publication Date: 2021-12-07
VOYAH AUTOMOBILE TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some extreme cases, this kind of protection measures can meet the needs of users, but the steering motor will often work at a relatively high temperature, resulting in unstable service life of the steering motor, and the steering motor is prone

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
  • Thermal protection control method and device for steering motor
  • Thermal protection control method and device for steering motor
  • Thermal protection control method and device for steering motor

Examples

Experimental program
Comparison scheme
Effect test

Example

[0051] Example 1:

[0052] When the thermal protection temperature value is the maximum temperature value, it is monitored that when the first time of working at the maximum operating current value reaches t2, the temperature reaches 125°C, and the operating current can be reduced to the protection current value B1, so that the steering motor reaches a thermal balance state . At this time, the current change curve is C1.

Example

[0053] Example 2:

[0054] When the thermal protection temperature value is less than the maximum temperature value, the setting value turns to the working platform of the motor at the middle current value. First, when it is detected that the temperature reaches 100° C. when the first duration of working at the maximum operating current value reaches t1 , the operating current can be reduced to the middle current B2 . When working in the middle current value B2 state, the heat accumulation of the steering motor is slow, which can further increase the working time to reach the maximum temperature value. Then, when the second duration (T2-T1) reaches the preset second assist duration and the temperature reaches 125°C, the working current value of the control steering motor is reduced to the protection current value B1 according to the current coefficient to reach a thermal equilibrium state. At this time, the current change curve is C2.

[0055] Compared with Example 1, the ad...

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 thermal protection control method and device for a steering motor. The method comprises the following steps: acquiring a first duration of operation of the steering motor in a preset maximum working current value state; judging whether the first duration is greater than a preset first assistance duration or not; enabling the first power-assisted duration to be the duration when heat accumulated when the steering motor works at the maximum working current value reaches a thermal protection temperature value; and when the first duration is greater than the first power-assisted duration, controlling the working current value of the steering motor to be reduced to a protection current value according to a preset current coefficient, wherein the current coefficient is the rate for adjusting the current value, and the protection current value is the current value for balancing heating and heat dissipation when the steering motor works. The problem that the steering motor is overheated to be ablated or stop working due to the fact that the steering motor exceeds the maximum bearing temperature can be avoided, the working stability of the steering motor is guaranteed, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and device for thermal protection control of a steering motor. Background technique [0002] When a car driver manipulates the steering wheel, he needs the steering motor to provide assistance to reduce the operating force of the steering wheel. The current thermal protection of the motor generally requires that the thermal protection is not activated before 15 cycles of in-situ driving, and the thermal protection means that the motor is turned off. In the prior art, thermal protection of the motor is performed by detecting the temperature sensor of the motor to determine the temperature of the motor. The motor will generate high temperature after working for a long time, and if the temperature is too high, the motor will be ablated. Generally, after 15 cycles, the motor will start thermal protection and turn off the power assist. In some extreme cases, although t...

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): H02P29/024H02P29/028H02P29/032H02P29/40
CPCH02P29/027H02P29/028H02P29/032H02P29/40
Inventor 郑凌航刘俊田树新吴德旭
Owner VOYAH AUTOMOBILE TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap