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Electric actuator locked-rotor fault control method and device and electric actuator

An electric actuator and fault control technology, applied in electrical control, engine control, fuel injection control, etc., can solve problems such as exhaust gas explosion, motor overheating, frequent shutdown of electric actuators, etc., to avoid hazards and improve accuracy.

Pending Publication Date: 2021-12-10
NINGBO XIECHENG POWER TOOLS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since there will be solid impurities remaining in the process of exhaust gas combustion, during long-term use, the electric actuator may be blocked, and continuing to use the electric actuator under the blocked rotor will cause the motor to overheat, and the exhaust gas circulation pipeline Therefore, it is particularly important to find out whether the electric actuator is blocked. However, the existing blocking judgment method judges the deflection of the electric actuator when the valve cannot move or the valve rotation angle has errors. , resulting in misjudgment and frequent shutdown of the electric actuator

Method used

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  • Electric actuator locked-rotor fault control method and device and electric actuator
  • Electric actuator locked-rotor fault control method and device and electric actuator
  • Electric actuator locked-rotor fault control method and device and electric actuator

Examples

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Effect test

no. 1 example

[0038] see figure 1 , which is a flow chart of a method for controlling a locked-rotor fault of an electric actuator provided in the first embodiment of the present invention. The method for controlling the stalled fault of the electric actuator specifically includes:

[0039] Step S10, obtaining the actual rotation angle information of the valve;

[0040] It should be noted that acquiring the actual rotation angle information of the valve here may be checking the actual rotation angle information of the valve each time the valve rotates, or obtaining the actual rotation angle information of the valve periodically.

[0041] Step S20, judging whether the absolute value of the absolute value of the difference between the actual valve rotation angle α1 and the valve rotation command angle α2 is greater than the preset difference β;

[0042] It should be noted that the actual valve rotation angle α1 here is the actual rotation angle of the valve under the control of the rotating...

no. 2 example

[0065] see image 3 , the embodiment of the present invention also provides an electric actuator stall fault detection device 100 . Wherein, the electric actuator stall fault detection device 100 includes, for example: an acquisition module 110 for acquiring the actual rotation angle information of the valve, the valve rotation information and the stall information; an angle monitoring module 120 for detecting the angle of the valve rotation; The control module 130 is used to control the valve to realize the electrical protection mode and / or the self-cleaning mode.

[0066] In a specific embodiment, the acquisition module 110, the angle monitoring module 120, and the control module 130 of the electric actuator stall fault detection device 100 cooperate to implement the electric actuator stall fault control method described in the first embodiment above, here I won't repeat them here.

no. 3 example

[0068]The embodiment of the present invention also provides an electric actuator 200, including a readable storage medium storing a computer program and a packaging IC electrically connected to the readable storage medium. When the computer program is read and run by the packaging IC, the electric actuator realizes the above-mentioned The method for controlling a locked-rotor fault of an electric actuator described in any one of the embodiments.

[0069] The packaged IC in this embodiment may be, for example, a processor chip, and the processor chip is electrically connected to a computer-readable storage medium to read and execute the computer program. The packaged IC may also be a packaged circuit board, and the circuit board is packaged with a processor chip capable of reading and executing the computer program; of course, the circuit board may also package a computer-readable storage medium.

[0070] Wherein, the processor chip can also be provided with the electric actuat...

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PUM

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Abstract

The invention provides an electric actuator locked-rotor fault control method. The electric actuator locked-rotor fault control method comprises the steps that actual rotation angle information of a valve is obtained; whether the absolute value of the difference value between an actual valve rotation angle alpha 1 and a valve rotation instruction angle alpha 2 is larger than a preset difference value beta or not is judged; when it is judged that the absolute value of the difference value between the actual rotation angle alpha 1 of the valve and the rotation instruction angle alpha 2 of the valve is larger than the preset difference value beta, it is judged that the electric actuator is locked, and the rotation direction of the valve is recorded; and when it is judged that the absolute value of the difference value between the actual valve rotation angle alpha 1 and the valve rotation instruction angle alpha 2 is smaller than or equal to the preset difference value beta, it is judged that the electric actuator is normal. The electric actuator locked-rotor fault control method is used for improving the accuracy of detecting whether the electric actuator is in the locked-rotor state or not.

Description

technical field [0001] The invention relates to the field of exhaust gas circulation systems of commercial vehicles, in particular to a method for controlling a stalled fault of an electric actuator, a device for controlling a stalled fault of an electric actuator, and an electric actuator. Background technique [0002] With the prospect of environmental protection and energy saving being paid more and more attention, commercial vehicles will install an exhaust gas circulation system at the engine. At the same time, the valve at the waste gas circulation system is controlled by the electric actuator to open, so that part of the exhaust gas enters the engine for re-combustion, which reduces the pollution of the exhaust gas and recycles the exhaust gas, which has the effect of saving energy. [0003] Since there will be solid impurities remaining in the process of exhaust gas combustion, during long-term use, the electric actuator may be blocked, and continuing to use the elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/22F02D41/00F02M26/49F02M26/54F02M26/50
CPCF02D41/221F02D41/0077F02M26/49F02M26/54F02M26/50Y02T10/40
Inventor 吴冰何洲统张贤权周开封王伟
Owner NINGBO XIECHENG POWER TOOLS CO LTD
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