CN108775857B - Permanent magnetic brushless hall position sensor method for diagnosing faults - Google Patents
Permanent magnetic brushless hall position sensor method for diagnosing faults Download PDFInfo
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- CN108775857B CN108775857B CN201810742146.1A CN201810742146A CN108775857B CN 108775857 B CN108775857 B CN 108775857B CN 201810742146 A CN201810742146 A CN 201810742146A CN 108775857 B CN108775857 B CN 108775857B
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- permanent magnetic
- position sensor
- magnetic brushless
- hall position
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of permanent magnetic brushless hall position sensor method for diagnosing faults, the technical issues of the practicability is poor for solving existing method for diagnosing faults.Technical solution is that identification permanent magnetic brushless positive and negative rotation first runs Shi Sanlu hall position sensor output sequence, then the permanent magnetic brushless rotor current position signal of acquisition hall position sensor output, a position signal on the permanent magnetic brushless rotor of hall position sensor output, the permanent magnetic brushless rotor current position signal of the hall position sensor output of prediction and permanent magnetic brushless direction of rotation, it is whether equal according to current hall position sensor output signal and hall position sensor prediction output signal simultaneously, operating condition is detected as the slow-speed of revolution using this, the permanent magnetic brushless hall position sensor failure problems of frequent positive and negative rotation, guarantee the reliability service of Electrical Break System of Aircraft, practicability is good.
Description
Technical field
The present invention relates to a kind of method for diagnosing faults, in particular to a kind of permanent magnetic brushless hall position sensor failure
Diagnostic method.
Background technique
Permanent magnetic brushless is a kind of ac motor using p-m rotor, have that structure is simple, power density is high and
The advantages that high-efficient, is widely used in the field of electromechanical integration such as aerospace, numerically-controlled machine tool.Permanent magnetic brushless is generally adopted
With control mode is connected two-by-two, need to obtain six rotor-position signals for electronic commutation within an electric period.Often at present
Using the mounting means at 60 ° of intervals or 120 ° of intervals, three hall position sensors are installed and are detected for motor rotor position.So
And situations such as rugged environment, violent vibration, connecting line, will cause hall position sensor failure.If certain phase hall position
Sensor failure, Hall output signal can not correctly reflect the position of rotor magnetic pole, will cause great abnormal current, lead
The machine of sending a telegraph is unable to operate normally.Therefore, for the research of permanent magnetic brushless hall position sensor method for diagnosing faults for
The reliability of raising system is significant.
All-electric braking system can due to not using hydraulic oil as a vital subsystem in electric aircraft
To reduce potential danger of combustion, mitigate system weight.More advanced control mode can be used simultaneously, improve the brake of system
Vehicle efficiency.Therefore, for the Electrical Break System of Aircraft using permanent magnetic brushless as servo mechanism, research brushless, permanently electricity
Machine hall position sensor method for diagnosing faults, for guaranteeing that the reliability service of brake system is of great significance.
For in the research of permanent magnetic brushless hall position sensor method for diagnosing faults, 1 " brshless DC motor of document
Rotor-position sensor fault diagnosis and fault-tolerant strategy, micro machine, 2014, Vol47 (04), P59-61 " disclose a kind of Hall
Position sensor method for diagnosing faults.This method analyzes rotor-position signal, and an electric period is divided into six sections,
Diagnose whether hall position sensor breaks down by comparing the width in next section and a upper section.
Document 2 " brushless direct current motor switching regulator hall position sensor fault detection and signal are corrected, micro machine,
2013, Vol46 (09), P62-67 " disclose a kind of hall position sensor fault detection method.This method utilizes pulse time
The confidence interval of a time is arranged for next rising edge of a pulse moment for estimated value and current angular velocity size.When what is extrapolated
Moment is located in confidence interval, then it is assumed that hall position sensor signal is normal；At the time of extrapolating not in confidence interval,
Then think hall position sensor failure.
Method disclosed in document mainly for operating condition be permanent direction, permanent revolving speed permanent magnetic brushless hall position
Sensor fault diagnosis can not be the Electrical Break System of Aircraft servo permanent magnetism of the slow-speed of revolution, frequent positive and negative rotation to operating condition
Brushless motor Hall position sensor failure problems carry out fault diagnosis.
Summary of the invention
In order to overcome the shortcomings of existing method for diagnosing faults, the practicability is poor, and the present invention provides a kind of permanent magnetic brushless Hall
Position sensor method for diagnosing faults.This method recognizes permanent magnetic brushless positive and negative rotation operation Shi Sanlu hall position sensing first
Then device output sequence acquires permanent magnetic brushless rotor current position signal, the hall position of hall position sensor output
A position signal, the brushless, permanently that the hall position sensor of prediction exports are electric on the permanent magnetic brushless rotor of sensor output
Machine rotor current position signal and permanent magnetic brushless direction of rotation, at the same according to current hall position sensor output signal and
Hall position sensor predicts whether output signal is equal, detects operating condition as the permanent magnetism of the slow-speed of revolution, frequent positive and negative rotation using this
Brushless motor Hall position sensor failure problems guarantee that the reliability service of Electrical Break System of Aircraft, practicability are good.
A kind of the technical solution adopted by the present invention to solve the technical problems: permanent magnetic brushless hall position sensor event
Hinder diagnostic method, its main feature is that the following steps are included:
The first step, permanent magnetic brushless operation when, when three road hall position sensors output 000 and 111 when, permanent magnetism without
Brush motor is malfunction, when three road hall position sensors output 001,010,011,100,101 and 110, brushless, permanently
Motor is normal condition.
Second step, when permanent magnetic brushless is run forward or backwards, respectively recognize permanent magnetic brushless forward or backwards
The hall position sensor output sequence of operation is used to carry out motor positive and inverse judgement when fault diagnosis.
Third step, permanent magnetic brushless operation when, acquisition hall position sensor output permanent magnetic brushless rotor
A position signal on current position signal and the permanent magnetic brushless rotor of hall position sensor output.
4th step, permanent magnetic brushless operation when, according to hall position sensor export permanent magnetic brushless rotor
A position signal differentiates brushless, permanently electricity on current position signal and the permanent magnetic brushless rotor of hall position sensor output
The direction of rotation of machine records permanent magnetic brushless direction of rotation.
5th step, according to the permanent magnetic brushless direction of rotation that determines, by hall position sensor output permanent magnetism without
A position signal deduces the permanent magnetic brushless rotor present bit of the hall position sensor output of prediction on brush motor rotor
Confidence number.
If permanent magnetic brushless rotor current position signal and Hall that the hall position sensor of the 6th step, prediction exports
The permanent magnetic brushless rotor current position signal of position sensor output is equal, then hall position sensor is normal；If prediction
Hall position sensor output permanent magnetic brushless rotor current position signal and hall position sensor output permanent magnetism
Brushless electric motor rotor current position signal differs, then hall position sensor breaks down, and exports fault-signal.
The beneficial effects of the present invention are: this method recognizes permanent magnetic brushless positive and negative rotation operation Shi Sanlu hall position first
Then sensor output sequence acquires permanent magnetic brushless rotor current position signal, the Hall of hall position sensor output
Position sensor output permanent magnetic brushless rotor on a position signal, prediction hall position sensor output permanent magnetism without
Brush motor rotor current position signal and permanent magnetic brushless direction of rotation, while being exported and being believed according to current hall position sensor
Number and hall position sensor prediction output signal it is whether equal, operating condition is detected as the slow-speed of revolution, frequent positive and negative rotation using this
Permanent magnetic brushless hall position sensor failure problems guarantee that the reliability service of Electrical Break System of Aircraft, practicability are good.
It is specific: first, the present invention is exported by acquisition permanent magnetic brushless traffic direction and hall position sensor
The permanent magnetic brushless rotor that a position signal deduces hall position sensor output on permanent magnetic brushless rotor-position is worked as
Front position signal, by the permanent magnetic brushless rotor current position signal and actual of the hall position sensor predicted output
The permanent magnetic brushless rotor current position signal of hall position sensor output compares, in the permanent magnetic brushless slow-speed of revolution, frequency
In the case where numerous positive and negative rotation, comprehensive and accurate detection hall position sensor failure improves the reliable of Electrical Break System of Aircraft
Property, guarantee the safe operation of aircraft；
Second, the present invention can not only detect hall position sensor " 000 " or " 111 " status fault, moreover it is possible to be diagnosed to be suddenly
This failure problems of that turnaround sequence mistake, improve the reliability of system；
Third, the present invention are applicable not only to the Electrical Break System of Aircraft using permanent magnetic brushless as servo motor, also suitable
It is the permanent magnetic brushless servo-system permanent magnetic brushless hall position sensing of the slow-speed of revolution, frequent positive and negative rotation for operating condition
Device fault diagnosis；
4th, the present invention is not related to any hardware circuit design, and method is simple, reliable, is suitble to engineer application.
It elaborates with reference to the accompanying drawings and detailed description to the present invention.
Detailed description of the invention
Fig. 1 is the flow chart of permanent magnetic brushless hall position sensor method for diagnosing faults of the present invention.
Fig. 2 is permanent magnetic brushless the system composition block diagram in the method for the present invention.
Fig. 3 is hall position sensor signal logic schematic diagram in the method for the present invention.
Fig. 4 is permanent magnetic brushless drive system schematic diagram in the method for the present invention.
Specific embodiment
Following embodiment referring to Fig.1-4.
The present embodiment is using the TMS320F2812 of Texas Instruments as control chip, and IR2136 is as driving
Chip selects three-phase bridge circuit, drives permanent magnetic brushless.
Specific step is as follows for permanent magnetic brushless hall position sensor method for diagnosing faults of the present invention:
The first step, permanent magnetic brushless operation when, three road hall position sensor most multipotencys output " 000,001,010,
011,100,101,110,111 " eight kind of state, wherein " 000,111 " are malfunction.The one-dimension array for being 8 with a length
Hall respectively indicates this eight kinds of states, and wherein Hall [0] and Hall [7] is malfunction, and system passes through detection hall sensing
Whether device breaks down state to differentiate whether hall position sensor breaks down.If there are " 111 " in hall position sensor
Failure, then Fault_111=1；If there is not " 111 " failure, Fault_111=0 in hall position sensor.Meanwhile if suddenly
There is " 000 " failure by position sensor in you, then Fault_000=1；If there is not " 000 " failure in hall position sensor,
Fault_000=0.
Second step, when permanent magnetic brushless is run forward or backwards, respectively recognize permanent magnetic brushless forward or backwards
The hall position sensor output sequence of operation simultaneously records, and is used to carry out motor positive and inverse judgement when fault diagnosis.
Third step, permanent magnetic brushless operation when, acquisition hall position sensor output permanent magnetic brushless rotor
A position signal on the permanent magnetic brushless rotor that current position signal Hall_Current, hall position sensor export
Hall_Previous。
4th step, permanent magnetic brushless operation when, according to hall position sensor export permanent magnetic brushless rotor
A position signal on the permanent magnetic brushless rotor that current position signal Hall_Current and hall position sensor export
Hall_Previous can differentiate the direction of rotation of motor, and be recorded with Direction.When permanent magnetic brushless forward direction is run
When, Direction=1；When permanent magnetic brushless inverted running, Direction=0.
5th step, the permanent magnetic brushless rotor exported according to the motor direction of rotation determined by hall position sensor
The permanent magnetic brushless rotor that upper position signal Hall_Previous deduces the hall position sensor output of prediction is current
Position signal Hall_Predict.
6th step, permanent magnetic brushless operation when, with hall position sensor export permanent magnetic brushless rotor work as
The permanent magnetic brushless rotor that front position signal Hall_Current and the hall position sensor for deducing prediction export is current
Position signal Hall_Predict compares.If Hall_Current=Hall_Predict, hall position sensor is normal,
Fault detection signal Hall_Fault=0；If Hall_Current ≠ Hall_Predict, hall position sensor failure,
Fault detection signal Hall_Fault=1 exports fault-signal.
Claims (1)
1. a kind of permanent magnetic brushless hall position sensor method for diagnosing faults, it is characterised in that the following steps are included:
The first step, permanent magnetic brushless operation when, when three road hall position sensors output 000 and 111 when, brushless, permanently electricity
Machine is malfunction, when three road hall position sensors output 001,010,011,100,101 and 110, permanent magnetic brushless
For normal condition；
Second step, when permanent magnetic brushless is run forward or backwards, respectively recognize permanent magnetic brushless run forward or backwards
Hall position sensor output sequence, be used for fault diagnosis when carry out motor positive and inverse judgement；
Third step, permanent magnetic brushless operation when, acquisition hall position sensor output permanent magnetic brushless rotor it is current
A position signal on position signal and the permanent magnetic brushless rotor of hall position sensor output；
4th step, permanent magnetic brushless operation when, according to hall position sensor export permanent magnetic brushless rotor it is current
A position signal differentiates permanent magnetic brushless on position signal and the permanent magnetic brushless rotor of hall position sensor output
Direction of rotation records permanent magnetic brushless direction of rotation；
The permanent magnetic brushless direction of rotation that 5th step, basis determine, by the brushless, permanently electricity of hall position sensor output
A position signal deduces the permanent magnetic brushless rotor present bit confidence of the hall position sensor output of prediction on machine rotor
Number；
If permanent magnetic brushless rotor current position signal and hall position that the hall position sensor of the 6th step, prediction exports
The permanent magnetic brushless rotor current position signal of sensor output is equal, then hall position sensor is normal；If prediction is suddenly
The permanent magnetic brushless rotor current position signal of your position sensor output and the brushless, permanently of hall position sensor output
Rotor current position signal differs, then hall position sensor breaks down, and exports fault-signal.
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| CN201810742146.1A CN108775857B (en) | 2018-07-09 | 2018-07-09 | Permanent magnetic brushless hall position sensor method for diagnosing faults |
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| CN201810742146.1A CN108775857B (en) | 2018-07-09 | 2018-07-09 | Permanent magnetic brushless hall position sensor method for diagnosing faults |
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