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Motor deviation detection method and application thereof

A motor and deviation technology, applied in the field of motor deviation detection, can solve problems such as unfavorable motor control, deviation of motor output torque, affecting the detection accuracy of electrical appliances, etc., to improve detection accuracy, ensure laundry quality, strong versatility and The effect of operability

Active Publication Date: 2014-02-05
PANASONIC APPLIANCES CHINA CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the actual motor will be affected by factors such as production technology and production materials, resulting in deviations between the actual product and the ideal standard product. These factors exist objectively, even under the same driving voltage and frequency. There are still performance deviations among the various motors, such as the deviation of the output torque. This deviation is not conducive to the control of the motor in practical applications, and also affects the detection accuracy of the corresponding electrical appliances. For example, the current detection of the cloth amount of the washing machine is Depending on the fixed torque output by the motor, the acceleration time required under different loads is different to make a judgment. However, due to the deviation of the motor output torque, the detection accuracy of the cloth amount will decrease, and the washing machine cannot accurately determine the cloth amount, which will cause the washing machine to fail. It is impossible to accurately control parameters such as laundry water flow and time for the current cloth volume

Method used

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  • Motor deviation detection method and application thereof
  • Motor deviation detection method and application thereof
  • Motor deviation detection method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] refer to figure 1 , embodiment one, the detection method of motor deviation:

[0032] S101: setting the same driving voltage and driving frequency;

[0033] S102: Drive the standard motor and the measured motor to rotate and accelerate to a predetermined speed, and then stop the motor output to make the measured motor inertial rotation decelerate until it stops;

[0034] S103: In the acceleration and deceleration interval, set the first rotational speed as the initial acceleration speed, set the second rotational speed as the final deceleration speed, and obtain the time required for the standard motor to reach the final acceleration speed from the initial acceleration speed and the deceleration final speed of the standard motor. The sum of the time T required for the initial speed to reach the deceleration final speed 1 , to obtain the sum T of the time required for the motor under test to reach the final speed of acceleration from the initial speed of acceleration a...

Embodiment 2

[0049] refer to Figure 7 , embodiment two, the detection method of motor deviation:

[0050] S201: setting the same driving voltage and driving frequency;

[0051] S202: Drive the standard motor and the measured motor to rotate and accelerate to a predetermined speed, and then stop the motor output to make the measured motor inertial rotation decelerate until it stops;

[0052] S203: In the acceleration interval, set the first rotational speed as the initial acceleration speed, set the second rotational speed as the final acceleration speed, and obtain the time T required for the standard motor to reach the final acceleration speed from the initial acceleration speed 1 , to obtain the time T required for the measured motor to reach the final acceleration speed from the initial acceleration speed 0 ;

[0053] S204: Obtain time T 0 with time T 1 difference between

[0054] S205: The difference value is compared with the difference database to obtain a deviation amount of ...

Embodiment 3

[0057] refer to Figure 8 , embodiment three, detection method of motor deviation:

[0058] S301: setting the same driving voltage and driving frequency;

[0059] S302: Drive the standard motor and the tested motor to rotate and accelerate to a predetermined speed, and then stop the motor output to make the tested motor inertial rotation decelerate until it stops;

[0060] S303: In the deceleration interval, set the first rotational speed as the deceleration initial speed, set the second rotational speed as the deceleration final speed, and obtain the time T required for the standard motor to reach the deceleration final speed from the deceleration initial speed 1 , to obtain the time T required for the measured motor to reach the final deceleration speed from the deceleration initial speed 0 ;

[0061] S304: Obtain time T 0 with time T 1 difference between

[0062] S305: The difference value is compared with the difference database to obtain a deviation amount of the mo...

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Abstract

The invention discloses a motor deviation detection method and an application thereof. According to the invention, the technical problem that the detection accuracy is reduced due to the deviation of existing motor actual output torque can be solved. The motor deviation detection method of the invention is that a standard motor and a motor to be tested are driven under same driving conditions so as to be subjected to acceleration and deceleration movement, a time T1 spent by the standard motor for changing from a first rotating speed to a second rotating speed and a time T0 spent by the motor to be tested for changing from the first rotating speed to the second rotating speed are acquired, and comparison is performed between the difference value between the time T0 and the time T1 and a difference data base to obtain the deviation value of the motor to be tested.

Description

【Technical field】 [0001] The invention relates to a method for detecting motor deviation and its application, especially a method for detecting the deviation of motor output torque and its application in detecting the amount of cloth in a washing machine. 【Background technique】 [0002] The main function of the motor is to generate driving torque as a power source for various electrical appliances or various machines. For example, the existing washing machine uses the motor to drive the drum, pulsator and other components to rotate and wash clothes. However, the performance of the actual motor will be affected by factors such as production technology and production materials, resulting in deviations between the actual product and the ideal standard product. These factors exist objectively, even under the same driving voltage and frequency. There are still performance deviations among the various motors, such as the deviation of the output torque. This deviation is not conduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/26D06F33/02
Inventor 肖江陈强
Owner PANASONIC APPLIANCES CHINA CO LTD
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