Unlock instant, AI-driven research and patent intelligence for your innovation.

A control method of an air conditioner servo motor

A technology of servo motor and control method, applied in the direction of torque ripple control, electronic commutator, air treatment equipment, etc., can solve the problems of reducing the service life of servo motor, difficult to ensure control accuracy, etc., to achieve high accuracy, prevent repeated Vibration and wear reduction effect

Active Publication Date: 2022-03-29
DONGFENG MOTOR GRP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in this case, it is not only difficult to ensure control accuracy, but also reduces the service life of the servo motor

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
  • A control method of an air conditioner servo motor
  • A control method of an air conditioner servo motor
  • A control method of an air conditioner servo motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The current air outlet mode of the car air conditioner is foot blowing (corresponding to FeedBack voltage of 1.4v), when switching to blowing surface (corresponding to FeedBack voltage of 4.5v) mode, the following processing will be performed:

[0047]The current servo motor position is A voltage is 1.4V, and the target point T voltage is 4.5V. The difference between T and A is 3.1V greater than the deceleration voltage Vd (0.5V). At this time, the duty cycle of the Motor+ output starts to drive the servo motor from the initial duty cycle Pi (60%), and increases the duty cycle by 10% every 10ms, and reaches a maximum of 100% after 40ms and maintains it. As point A moves to point T, the FeedBack voltage is constantly approaching from 1.4v to 4.5v. Until the difference between T and A is less than the deceleration voltage Vd (0.5v), the duty cycle of the Motor+ output starts to decrease from 100%, and decreases by 10% every 10ms, and continues to output according to Pi w...

Embodiment 2

[0057] Adaptive control cycle: when the servo motor is driven for the first time or after every 50 ignition cycles, some calibration parameters of the servo motor will be self-adapted. After entering the adaptive control cycle and updating the values ​​of Pi and Vh, the ignition cycle counter needs to be reset.

[0058] When the servo motor is driven for the first time in the adaptive control cycle, and the voltage difference between T and A is greater than 1V (the stroke is large enough), the Motor+ (motor drive voltage positive) output duty cycle will increase from 10% and increase by 10% every 100ms %. The voltage of FeedBack will be detected in the next 100ms after each increase of the duty cycle. When the difference between the FeedBack voltage and the initial position A voltage is greater than 0.05v (the motor is driven). Record the duty cycle at this time and update it to the new initial duty cycle Pi.

[0059] At the same time, the motor continues to drive with a 10...

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 relates to the technical field of motor control, in particular to a method for controlling an air conditioner servo motor. If the voltage difference V1 ≥ the set deceleration voltage Vd, the driving duty ratio of the servo motor gradually increases from the initial duty ratio Pi to 100%. During the increasing process, if the voltage difference V1 is less than the deceleration voltage Vd, the servo motor The driving duty ratio gradually decreases from the current duty ratio to the initial duty ratio Pi, and then continues to output according to the initial duty ratio Pi, until the voltage difference V1≤0, the duty ratio of the servo motor is reduced to 0%; if the voltage difference V1

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a method for controlling an air conditioner servo motor. Background technique [0002] The air conditioning servo motor is the main actuator of the automobile air conditioning system. The control accuracy of the servo motor directly determines the automatic control effect of the air conditioner. However, the mechanical structure of the servo motor determines that it is prone to overshoot and oscillation during the control process. The existing technology generally drives the servo motor with a fixed duty cycle, and stops the output after the detection reaches the target position. The motor is back driven again due to inertia that would cause the actual stop position to cross the target position. If it crosses the target position again, it will form a situation of repeated shocks. At the same time, in this case, it is not only difficult to ensure the control accuracy, bu...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/10H02P6/16B60H1/00
CPCH02P6/10H02P6/16B60H1/00642
Inventor 卢佳李俊杰李志军赵宁王恺
Owner DONGFENG MOTOR GRP