CN207573270U - A kind of use in washing machine brshless DC motor Hall fault-tolerant control system - Google Patents
A kind of use in washing machine brshless DC motor Hall fault-tolerant control system Download PDFInfo
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- CN207573270U CN207573270U CN201721676276.7U CN201721676276U CN207573270U CN 207573270 U CN207573270 U CN 207573270U CN 201721676276 U CN201721676276 U CN 201721676276U CN 207573270 U CN207573270 U CN 207573270U
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Abstract
The utility model is related to a kind of use in washing machine brshless DC motor Hall fault-tolerant control systems,Including AC power,Rectifier bridge,Current sampling module,Signal-regulated kinase,Inverter bridge,Driving circuit,Isolation circuit,Brshless DC motor,Hall sensor,Fault diagnosis module,Fault-signal fault-tolerant processing module,Level switch module,Keyboard,Display,DSP,The rectified bridge of AC power is connect respectively with current sampling module and inverter bridge,Current sampling module is connect with Signal-regulated kinase,Isolation circuit is connect through driving circuit with inverter bridge,Inverter bridge is connect with brshless DC motor,Brshless DC motor is connect through Hall sensor with fault diagnosis module and level switch module respectively,Fault diagnosis module is connect through fault-signal fault-tolerant processing module with level switch module,DSP respectively with keyboard,Display,Level switch module,Signal-regulated kinase is connected with isolation circuit.The system can ensure brshless DC motor normal operation in the case where one or two Hall sensor breaks down, and improve the reliability of system.
Description
Technical field
The utility model is related to a kind of use in washing machine brshless DC motor Hall fault-tolerant control systems, belong to motor fault-tolerant control
Field processed.
Background technology
Traditional motor for washer is mainly using induction machine, series excited machine, three-phase alternating current variable-frequency motor etc., this three kinds of electricity
Machine has many advantages, such as that simple in structure, reliable, cost is relatively low, but there are disadvantage in terms of mute, power-performance, speed governing, no
Washing machine industry can be fully met to efficient, energy-efficient requirement.At present, brshless DC motor becomes laundry instead of above-mentioned motor
The core component of machine.According to Market reaction situation, brshless DC motor FAQs fails for Hall sensor.
Hall sensor is the important component of brshless DC motor, and effect is to detect rotor during the motion
Position, and the position signal of rotor magnetic pole is converted into electric signal, correct commutation information is provided for logic switching circuit, with control
Them are made to be connected and turn off, and then work normally motor.Hall sensor easily fails under many factors, such as：Wiring
Failure, severe working environment or violent vibration, this will lead to Hall sensor operation irregularity, and hall signal is lost, into
It and can not work normally motor.
Invention content
The purpose of this utility model is to design a kind of use in washing machine brshless DC motor Hall fault-tolerant control system, the control
System can ensure that brshless DC motor can also make motor normal in the case where one or two Hall sensor breaks down
Work.
The system includes：AC power, rectifier bridge, current sampling module, Signal-regulated kinase, inverter bridge, driving circuit,
Isolation circuit, brshless DC motor, Hall sensor, fault diagnosis module, fault-signal fault-tolerant processing module, level conversion mould
Block, keyboard, display, DSP.The rectified bridge of AC power is connect respectively with current sampling module and inverter bridge, and electric current is adopted
Egf block is connect with Signal-regulated kinase, and isolation circuit is connect through driving circuit with inverter bridge, inverter bridge and brshless DC motor
Connection, brshless DC motor are connect through Hall sensor with fault diagnosis module and level switch module respectively, fault diagnosis mould
Block is connect through fault-signal fault-tolerant processing module with level switch module, DSP respectively with keyboard, display, level switch module,
Signal-regulated kinase is connected with isolation circuit.
The detection data of the utility model is by display real-time display, when Hall sensor breaks down, fault diagnosis
Module timing is simultaneously remembered and compares the time and carry out failure judgement type and the sensor to break down is shown by display.Fault-signal holds
Wrong processing module judges motor speed and acceleration, failure phase commutation is obtained after Fuzzy Calculation by timing and memory time
Time sends out commutation signal.Using the utility model can realize one or two Hall sensor break down after motor just
Often work reduces electrical machmary maintenance number, and replaces failure Hall sensor for motor and bring very big convenience.
Description of the drawings
Fig. 1 use in washing machine brshless DC motor Hall fault-tolerant control system structure charts.
Specific embodiment
As shown in Figure 1, a kind of use in washing machine brshless DC motor Hall fault-tolerant control system, composition include：Exchange
Power supply, rectifier bridge, current sampling module, Signal-regulated kinase, inverter bridge, driving circuit, isolation circuit, brshless DC motor,
Hall sensor, fault diagnosis module, fault-signal fault-tolerant processing module, level switch module, keyboard, display, DSP.Institute
It states the rectified bridge of AC power to connect with current sampling module and inverter bridge respectively, current sampling module connects with Signal-regulated kinase
It connects, isolation circuit is connect through driving circuit with inverter bridge, and inverter bridge is connect with brshless DC motor, and brshless DC motor is through Hall
Sensor is connect respectively with fault diagnosis module and level switch module, and fault diagnosis module is through fault-signal fault-tolerant processing module
It is connect with level switch module, DSP connects respectively with keyboard, display, level switch module, Signal-regulated kinase and isolation circuit
It connects.
Specific processing procedure includes content：
First, Hall sensor fault diagnosis：
The fault diagnosis of Hall sensor is completed by fault diagnosis module, and signal height is sent out by recording Hall sensor
The time of low level period of change diagnoses whether Hall sensor breaks down.The Hall sensor a cycle of normal work
6 signals can be sent out, it is contemplated that motor speed may be considered quasi-static amount relative to commutation section, therefore by comparing one
The difference of a upper signal time that signal time is remembered with fault diagnosis module diagnoses whether Hall sensor breaks down
And judge it is which Hall sensor breaks down.
2nd, Hall sensor faults-tolerant control：
After Hall sensor fault diagnosis is completed, since the Hall sensor signal of failure will not change, at this time
A upper signal time should be remembered by fault-signal fault-tolerant processing module by Fuzzy Calculation, predicts the next signal time.
When motor reduces load or starts, rotating speed gradually increases, when the next signal time should be less than a signal
Between；When motor travels at the uniform speed, rotating speed is constant, and the next signal time should be equal to a upper signal time；It is born when motor increases
When carrying or braking, rotating speed reduces, and the next signal time should be greater than a signal time.
Fault-signal fault-tolerant processing module be responsible for timing and remember time of a upper signal calculated through fuzzy algorithmic approach it is next
The time of a signal, this module have Fuzzy Calculation function, motor speed and acceleration are calculated according to Hall sensor signal, under making
The value of one signal time is more accurate.
During motor operation, display real-time display motor speed, when one or two Hall sensor breaks down
When, display can send out early warning, and show which Hall sensor breaks down；When three Hall sensors break down entirely
When, display can send out alarm prompt, should contact department after sale in time at this time and replace Hall sensor.
Claims (3)
1. a kind of use in washing machine brshless DC motor Hall fault-tolerant control system, composition includes：AC power, rectifier bridge, electricity
Flow sampling module, Signal-regulated kinase, inverter bridge, driving circuit, isolation circuit, brshless DC motor, Hall sensor, failure
Diagnostic module, fault-signal fault-tolerant processing module, level switch module, keyboard, display, DSP;The AC power is rectified
Bridge is connect respectively with current sampling module and inverter bridge, and current sampling module is connect with Signal-regulated kinase, and isolation circuit is through driving
Dynamic circuit is connect with inverter bridge, and inverter bridge is connect with brshless DC motor, brshless DC motor through Hall sensor respectively with it is former
Barrier diagnostic module is connected with level switch module, and fault diagnosis module is through fault-signal fault-tolerant processing module and level switch module
Connection, DSP are connect respectively with keyboard, display, level switch module, Signal-regulated kinase and isolation circuit.
2. a kind of use in washing machine brshless DC motor Hall fault-tolerant control system according to claim 1, it is characterised in that：
The fault diagnosis module has timing and memory function.
3. a kind of use in washing machine brshless DC motor Hall fault-tolerant control system according to claim 1, it is characterised in that：
The fault-signal fault-tolerant processing module has the function of timing, memory and Fuzzy Calculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721676276.7U CN207573270U (en) | 2017-12-06 | 2017-12-06 | A kind of use in washing machine brshless DC motor Hall fault-tolerant control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721676276.7U CN207573270U (en) | 2017-12-06 | 2017-12-06 | A kind of use in washing machine brshless DC motor Hall fault-tolerant control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207573270U true CN207573270U (en) | 2018-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721676276.7U Expired - Fee Related CN207573270U (en) | 2017-12-06 | 2017-12-06 | A kind of use in washing machine brshless DC motor Hall fault-tolerant control system |
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| CN (1) | CN207573270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211712A (en) * | 2020-01-14 | 2020-05-29 | 之江实验室 | Unmanned aerial vehicle motor driving system and motor fault-tolerant control method |
-
2017
- 2017-12-06 CN CN201721676276.7U patent/CN207573270U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211712A (en) * | 2020-01-14 | 2020-05-29 | 之江实验室 | Unmanned aerial vehicle motor driving system and motor fault-tolerant control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180703 Termination date: 20181206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |