A motor control system and its microelectronic fault detection method and device

A technology of motor control and fault detection, applied in general control systems, control/regulation systems, test/monitoring control systems, etc., can solve problems such as fault detection of ADC sampling modules

Active Publication Date: 2017-07-28
GUANGDONG WELLING ELECTRIC MACHINE MFG
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  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide a microelectronic fault detection method for a motor control system, which aims to solve the problem in the prior art that the ADC sampling module cannot be effectively detected and the motor is not affected by the fault detection. The problem of keeping things up and running

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  • A motor control system and its microelectronic fault detection method and device
  • A motor control system and its microelectronic fault detection method and device
  • A motor control system and its microelectronic fault detection method and device

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] figure 1 It shows the implementation flow of the microelectronic fault detection method of the motor control system provided by the embodiment of the present invention, wherein the motor control system controls the operation of the motor through the pulse width modulation signal in the main control process, and the central processing unit in the motor control system has ADC sampling module, the ADC sampling module is used to sample the motor operating current and the external reference voltage and convert them into corresponding digital signal values; for the convenience of description, only...

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Abstract

The invention belongs to the technical field of electronic fault detection and discloses a motor control system and a micro-electronic fault detection method and device thereof. The micro-electronic fault detection method includes that after the motor control system enters a main control procedure, calculating a pulse width modulation duty ratio and two current sampling time points, when the time interval between the calculation ending and the previous current sampling time point is larger than a preset detection time interval, stopping the main control procedure, controlling an ADC sampling module to sample external reference voltage to obtain a digital reference voltage value in the detection procedure, judging whether there is fault according to the digital reference voltage value and preset voltage value, if so, driving the motor control system to control a motor to stop running and enter a fault protection mode, otherwise, exiting the detection procedure, and restoring the main control procedure to realize the effective fault detection for the ADC sampling module. When the ADC sampling module works naturally, the main control procedure is restored to enable the motor to run normally, and the motor running is not influenced by the fault detection.

Description

technical field [0001] The invention belongs to the technical field of electronic fault detection, and in particular relates to a motor control system and a microelectronic fault detection method and device thereof. Background technique [0002] At present, in household appliances that need to be driven by motors (such as range hoods, washing machines, and air conditioners), the motors are driven and controlled by the motor control system, and the core control device in the motor control system is the central processing unit. If the central If a microelectronic module (such as ADC sampling module) in the processor fails, it cannot guarantee the normal drive control of the motor, which will cause the motor to fail to operate normally. Take corresponding protective measures to avoid abnormal operation of the motor. [0003] In the prior art, for the ADC sampling module (which is used to sample the operating current and operating voltage and convert them into digital signal va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0235
Inventor 张倩
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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