CN105024595B - A kind of brshless DC motor failure monitoring method and device - Google Patents
A kind of brshless DC motor failure monitoring method and device Download PDFInfo
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- CN105024595B CN105024595B CN201510434976.4A CN201510434976A CN105024595B CN 105024595 B CN105024595 B CN 105024595B CN 201510434976 A CN201510434976 A CN 201510434976A CN 105024595 B CN105024595 B CN 105024595B
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Abstract
The invention discloses a kind of brshless DC motor failure monitoring method and device.Methods described includes：The perception information needed for motor control is obtained in real time；By the perception information acquired in comparison and default fault message, fault diagnosis is carried out to position sensor, drive circuit power pipe and winding, diagnostic result is generated；The motor adjust instruction determined according to the diagnostic result is sent to brshless DC motor control module, and the diagnostic result is sent to host computer.The present invention solves brshless DC motor and brought into operation the problem of just can not continuously being monitored to related failure, realize the various faults on line real-time monitoring of brshless DC motor, and Fault Identification result can be sent or store, in order to which motor fault-tolerant control realizes Quick overhaul with later stage electrical machmary maintenance personnel.
Description
Technical field
The present embodiments relate to fault diagnosis technology, more particularly to a kind of brshless DC motor failure monitoring method and dress
Put.
Background technology
With the development of many power technologies of civil aircraft, and high magnetic energy and rare earth permanent-magnetic material research application, high-power
The appearance of semiconductor drivers part, application of the high-power brushless direct current generator in fuel system, winged control actuating system will be more next
It is more universal.Brshless DC motor is as a kind of electromechanical equipment, and longtime running has the hidden danger broken down, by developing brushless direct-current
The health monitoring technology of motor, can provide skill for the faults-tolerant control of brshless DC motor, the quick troubleshooting maintenance of aircraft system
Art is supported.
It is usually on brshless DC motor in the domestic and international civil aircraft high-power brushless direct current generator status monitoring of active service
Before electrically activating, simple Autonomous test, bag are carried out by the drive circuit to brshless DC motor, control circuit and motor body
Include DSP (Digital Signal Processing, digital signal processor) Autonomous test, A/D (Analog/Digital, mould
Plan/numeral) converter Autonomous test, CAP (Carrierless Amplitude Phase, no-load Amplitude Phase Modulation) mouth Autonomous test,
The Autonomous test of Hall sensor Autonomous test, drive circuit and power tube Autonomous test and brshless DC motor, passes through all kinds of self-inspections
Survey, failure is found in time before brshless DC motor operation.
After brshless DC motor startup, although failure monitoring to a certain extent can be realized, still, the failure
Monitoring be limited only in the circuit of motor be provided with several simple failure detector circuits be used for protect motor control and
The overcurrent protection of drive circuit, such as DC voltage overvoltage protection, under-voltage protection and electric current, it is impossible to online to power tube failure, suddenly
Your sensor fault, winding failure etc. are monitored in real time.Civil aircraft high-power brushless direct current generator occurs two simultaneously according to statistics
And the probability of malfunction of the above is very small, typically occurs in single fault form, take suitable but if not in time coming out Fault Identification
When faults-tolerant control or redundancy management, secondary failure can be triggered, thus timely and effectively to brshless DC motor carry out failure prison
Control has very important meaning.
The content of the invention
The present invention provides a kind of brshless DC motor failure monitoring method and device, to realize a variety of of brshless DC motor
On-line Fault is monitored in real time, and can send or store Fault Identification result, in order to motor fault-tolerant control and later stage electrical machmary maintenance
Personnel realize Quick overhaul.
In a first aspect, the embodiments of the invention provide a kind of brshless DC motor failure monitoring method, including：
The perception information needed for motor control is obtained in real time；
By the perception information acquired in comparison and default fault message, to position sensor, drive circuit power pipe
And winding carries out fault diagnosis, diagnostic result is generated；
The motor adjust instruction determined according to the diagnostic result is sent to brshless DC motor control module, and to upper
Machine sends the diagnostic result.
Second aspect, the embodiment of the present invention additionally provides a kind of brshless DC motor failure monitoring device, including：
Data obtaining module, for the perception information needed for acquisition motor control in real time；
Position sensor fault diagnosis module, for by the perception information acquired in comparison and default fault message,
Fault diagnosis is carried out to position sensor, diagnostic result is generated；
Drive circuit power pipe fault diagnosis module, for being believed by the perception information acquired in comparison and default failure
Breath, fault diagnosis is carried out to drive circuit power pipe, generates diagnostic result；
Winding failure diagnostic module, for by the perception information acquired in comparison and default fault message, to winding
Fault diagnosis is carried out, diagnostic result is generated；
State sending module, for sending the motor adjust instruction determined according to the diagnostic result to brshless DC motor
Control module, and send the diagnostic result to host computer.
Perception information of the present invention needed for by obtaining motor control in real time, by the perception information acquired in comparison and in advance
If fault message, to position sensor, drive circuit power pipe and winding carry out fault diagnosis, generate diagnostic result, hair
The motor adjust instruction determined according to the diagnostic result is sent to brshless DC motor control module, and sends described to host computer
Diagnostic result, solves brshless DC motor and brings into operation the problem of just can not continuously being monitored to related failure, realize nothing
The various faults on line real-time monitoring of brushless motor, and Fault Identification result can be sent or store, in order to motor fault-tolerant control
System and later stage electrical machmary maintenance personnel realize Quick overhaul.
Brief description of the drawings
Fig. 1 is the flow chart of the brshless DC motor failure monitoring method in the embodiment of the present invention one；
Fig. 2 a are the flow charts of the brshless DC motor failure monitoring method in the embodiment of the present invention two；
Fig. 2 b are the work-based logic figures of the brshless DC motor failure monitoring device in the embodiment of the present invention two；
Fig. 3 a are brshless DC motor hall position sensor and rotor relation schematic diagram；
Fig. 3 b are the implementation processs of the Brushless DC Motor Position sensor fault monitoring method in the embodiment of the present invention two
Figure；
Fig. 4 is the realization stream of the brushless direct current motor drive circuit power tube failure monitoring method in the embodiment of the present invention two
Cheng Tu；
Fig. 5 is the implementation process figure of the brshless DC motor winding failure monitoring method in the embodiment of the present invention two；
Fig. 6 is the structural representation of the brshless DC motor failure monitoring device in the embodiment of the present invention three；
Fig. 7 is that brshless DC motor failure monitoring device in the embodiment of the present invention three realizes schematic diagram.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 1 is the flow chart for the brshless DC motor failure monitoring method that the embodiment of the present invention one is provided, and the present embodiment can
Suitable for after brshless DC motor starts, the situation of on line real-time monitoring electrical fault, this method can be by brushless dc
Machine failure monitoring device is performed, and described device makes full use of the calculating of brushless DC motor control circuit microprocessor to handle money
Source, to be arranged in the form of fault diagnosis module in the microprocessor of the control circuit, specifically includes following steps：
S101, perception information in real time needed for acquisition motor control.
Wherein, the perception information includes the output signal and motor of bus current, winding current and position sensor
The relation of working condition.In terms of the perception information is obtained, by bus and three-phase Hall current sensor and hall position
Sensor group is into signal acquisition source, in addition to three-phase Hall current sensor, and signal necessary to making full use of motor control is perceived
Device, reduces the access of additional hardware.
S102, by the perception information acquired in comparison and default fault message, to position sensor, drive circuit work(
Rate pipe and winding carry out fault diagnosis, generate diagnostic result.
Wherein, default fault message includes position sensor the output at least four continuous electric machine operation states
Signal is unchanged, and, bus current value be equal to zero, and, winding current values be equal to zero.After the perception information is obtained,
Acquired perception information correspondence is distributed to each fault diagnosis module.
Illustrate：The information of the output signal of the sensor got and motor work relationship is sent to position sensing
Device fault diagnosis module.The position sensor fault diagnosis module receives the output signal to be believed with motor work relationship
Breath, judges that the output signal at least four continuous electric machine operation states has unchanged, to determine that hall position sensor is
It is no to break down.
The bus current got is sent to drive circuit power pipe fault diagnosis module.The drive circuit power pipe
Fault diagnosis module receives the bus current, judges whether the bus current value is equal to zero, to determine drive circuit work(
Whether rate pipe breaks down.
The output signal of the winding current got and position sensor is sent to winding failure diagnostic module.It is described
Winding failure diagnostic module receives the output signal of the winding current and position sensor, judges non-conduction phase winding electricity
Whether flow valuve is equal to zero, to determine whether winding breaks down.
S103, send according to the diagnostic result determine motor adjust instruction to brshless DC motor control module, and
The diagnostic result is sent to host computer.
Generated according to the diagnostic result of each diagnostic module the brshless DC motor of same form health and fitness information send to
Host computer.When needing to take the measure of reply failure, brushless direct-current is generated according to the diagnostic result of each fault diagnosis module
Motor operation adjust instruction is simultaneously sent to brshless DC motor control module.
The technical scheme of the present embodiment, is obtained by obtaining the perception information needed for motor control in real time, and by comparing
The perception information taken and default fault message, fault diagnosis is carried out to position sensor, drive circuit power pipe and winding,
Diagnostic result is generated, the motor adjust instruction determined according to the diagnostic result is sent to brshless DC motor control module, and
Send the diagnostic result to host computer, solve brshless DC motor bring into operation just related failure can not be carried out it is continuous
The problem of monitoring, the various faults on line real-time monitoring of brshless DC motor is reached, and can send or store Fault Identification knot
Really, in order to which motor fault-tolerant controls to realize the effect of Quick overhaul with later stage electrical machmary maintenance personnel.
Further, motor adjust instruction to the brshless DC motor determined in transmission according to the diagnostic result controls mould
Block, and before sending the diagnostic result to host computer, in addition to：
After the control power on circuitry of brshless DC motor, power-on self-test is carried out according to received control instruction
Survey.It is after brushless DC motor control circuit energization, before brshless DC motor startup optimization, to micro- place that the power-on self-test, which is surveyed,
Manage device Autonomous test, A/D converter Autonomous test, CAP mouthfuls of Autonomous tests, Hall sensor Autonomous test, drive circuit and power tube self-inspection
Survey and the Autonomous test of brshless DC motor body.For example, the detection to microprocessor is tested, first, by test program
Default result be stored in microprocessor internal, if tests microprocessor program output result is identical with default result, illustrate
Microprocessor work is normal, and otherwise host computer transmission instruction forbids brshless DC motor control module to work.
After the power-on self-test is surveyed and passed through, start DC voltage detection and direct current detection, wherein, the direct current
Pressure detection detects that the direct current detection is detected to the excessively stream of bus to the over-pressed and under-voltage of bus.Described
Power-on self-test is surveyed after completion, if by detection, by the detection of startup optimization DC voltage and direct current detection module, position
Sensor fault diagnosis module, drive circuit power pipe fault diagnosis module, winding failure diagnostic module.Wherein, the direct current
Voltage detecting and direct current detection module are detected to bus excessively stream, overvoltage and under-voltage condition.
Embodiment two
Fig. 2 a are the flow charts of the brshless DC motor failure monitoring method in the embodiment of the present invention two.In above-mentioned technical side
On the basis of case, each fault diagnosis module is further detailed.
Referring to shown in Fig. 2 a and Fig. 2 b, the brshless DC motor failure monitoring method specifically includes following steps：
S201, failure monitoring device are powered.
The comprehensive control module that S202, the failure monitoring device are included receives the upper electro-detection order of host computer transmission simultaneously
Send to self-detection module.Wherein, comprehensive control module is used to receive external command, and, obtain all perception information distributions
Each fault diagnosis module is given, and causes co-ordination between each fault diagnosis module, to upper after healthy conclusion is formed
Machine sends health and fitness information.The comprehensive control module is additionally operable to when needing to take the measure of reply failure, according to each failure
The diagnostic result generation brshless DC motor combustion adjustment of diagnostic module is instructed and sent to brshless DC motor control module.
S203, the self-detection module carry out power-on self-test survey according to the upper electro-detection order.
S204, according to the power-on self-test of the self-detection module survey result determine whether to break down, if so, then performing
S206, if it is not, then performing S205.
S205, the upper electro-detection pass through, and perform S208.
S206, to comprehensive control module send fault message.
S207, the upper electro-detection do not pass through, perform S215.
S208, on described electro-detection pass through it is rear, perform DC voltage detection.Receive the bus that comprehensive control module is sent
Voltage carries out over-pressed and under-voltage detection.When detecting over-pressed or under-voltage, S214 is performed.If be not detected by it is over-pressed or under-voltage,
Return to the DC voltage detection for performing this step.
S209, on described electro-detection pass through it is rear, perform direct current detection.Receive the bus that comprehensive control module is sent
Electric current carries out over-current detection.When detecting excessively stream, S214 is performed.If being not detected by excessively stream, return and perform the straight of this step
Flow current detecting.
S210, position sensor fault detect.The output signal of the position sensor sent according to comprehensive control module, enters
Line position puts Transducer fault detection.Fig. 3 a are brshless DC motor hall position sensor and rotor relation schematic diagram, can by figure
Know, three hall position sensors export three tunnel phases in brshless DC motor operation process and differ 120 degree of electrical angles, width
For the square wave position signalling of 180 degree, brushless direct current motor controller is detecting the rising edge or trailing edge of each square-wave signal
When think to enter new working condition (i.e. electric machine operation state).According to the output characteristic of three hall position sensors,
By monitoring three road output levels of continuous four working conditions, do not examined in continuous four working conditions all the way if determining certain
Level change is measured, Ze Gai roads hall position sensor occurs signal without output failure, occurred from failure to detecting failure most
About 390 degree of electrical angle times of long delay.Referring to shown in Fig. 3 b, position sensor fault diagnosis is specifically included：
Comprehensive control module obtains the output signal of position sensor from brshless DC motor control module.Receiving
During control instruction, the comprehensive control module starts the counter that a numerical value is i (i=0), and the counter often increases by one
Unit represents brshless DC motor and continuously changes a working condition.The counter is controlled plus 1, i.e., the value of described counter
For i=i+1, output signal (level signal) N (i)=H1, M of the corresponding position sensor of current motor working condition is obtained
(i)=H2 and L (i)=H3.If i<4, then counter is added 1, the corresponding position of current motor working condition is obtained again and is passed
The output signal of sensor.If still meeting i<4, then circulation carries out the operation that above-mentioned counter adds 1, until the value of the counter
More than or equal to 4.In acquired continuous four electric machine operation states of detection, the output signal N of the position sensor
(j), whether M (j) and L (j) (j=1,2,3 or 4) change.If N (j) does not change, it is determined that corresponding position is passed
Sensor H1 occurs without output failure.If M (j) does not change, it is determined that corresponding position sensor H2 occurs without output failure.
If L (j) does not change, it is determined that corresponding position sensor H3 occurs without output failure.The position sensor failure inspection
Module is surveyed to generate fault message according to above-mentioned testing result and perform S213.No matter whether N (j), M (j) and L (j) become
Change, first status information in four states is deleted, that is, deletes N (1), M (1) and L (1), makes N (j-1)=N (j), M (j-
1)=M (j) and L (j-1)=L (j), wherein, j=2,3 or 4.Now, by counter assignment i=3, next motor is gathered
The information of working condition forms the continuous electric machine operation state information of new four and carries out next round comparison again as supplement.
S211, power tube fault diagnosis.When comprehensive control module does not generate power tube fault diagnosis module out code,
According to the output signal and bus current of position sensor, the fault detect of circuit power pipe is driven.Fig. 4 is of the invention real
Apply the implementation process figure of the brushless direct current motor drive circuit power tube failure monitoring method in example two.It is shown in Figure 4, it is described
Drive circuit power pipe fault diagnosis is specifically included：The health letter of position sensor and winding is determined by comprehensive control module
Breath, when position sensor and winding do not break down, is driven circuit power pipe fault diagnosis.Otherwise, driving is stopped
The operation of circuit power pipe fault diagnosis module, and the state report of the drive circuit power pipe fault diagnosis module of generation is sent out
Deliver to comprehensive control module.When position sensor and winding do not break down, whether acquired bus current value is judged
Equal to zero, if it is not, then perform determine position sensor whether the operation of failure, if so, then setting the counting that numerical value is n
Device, and initial value is 1, i.e. n=1, and the bus current value of current state is expressed as into I (n)=0.According to the defeated of position sensor
Go out signal to determine to be connected into the VT (i) and VT (j) of two power tubes of drive circuit, wherein, VT (i) and VT (j) represent work(respectively
The label of rate pipe, i=1,2,3,4,5 or 6, j=1,2,3,4,5 or 6.Counter adds 1, i.e. n=n+1, records next work
The bus current I (n) of state.Determined to be connected into two power tube VT (j) of drive circuit according to the output signal of position sensor
With VT (k), wherein, j=1,2,3,4,5 or 6, k=1,2,3,4,5 or 6.Judge whether I (n) is equal to zero, if it is not, then by power
The information that pipe VT (i) breaks down is sent to comprehensive control module.If so, further, judging whether n numerical value meets n >=6.
If n >=6, generate power tube fault message and perform S214.If n ＜ 6, according to the conducting of electric machine operation state and power tube
The corresponding relation of state, circulation is performed in I (n)=0, obtains two power tubes for being connected into drive circuit, performs n=n+1, note
The bus current value for recording next electric machine operation state I (n) and two power tubes for being connected into drive circuit, judge I (n) whether etc.
In zero operation.Wherein, determined by the working condition of brshless DC motor and the corresponding relation of output signal of Hall sensor
The conducting state of power tube.Illustrate：Referring to Fig. 3 a, the work shape with brshless DC motor working condition brshless DC motor
The output signal of the corresponding Hall sensor of state 1~6 is respectively：100,110,010,011,001 and 101, it follows that described
The turn-on sequence of power tube be VT (1) and VT (6), VT (3) and VT (6), VT (2) and VT (3), VT (2) and VT (5), VT (4) and
VT (5) and VT (1) and VT (4).
S212, stator winding faults diagnosis.Stator winding faults diagnostic module is not generated and is closed in comprehensive control module refers to
When making, by the output signal and winding current of position sensor, stator winding faults diagnosis is carried out.Fig. 5 is of the invention real
Apply the implementation process figure of the brshless DC motor winding failure monitoring method in example two.It is shown in Figure 5, the brushless dc
Machine winding failure monitoring method is specifically included：By comprehensive control module determine position sensor whether failure, in position sensing
When device does not break down, stator winding faults diagnosis is carried out.Otherwise, winding failure diagnostic module is out of service, and is controlled to comprehensive
Molding block sends winding failure diagnostic module status information out of service.In position sensor fault-free, passed by position
The output signal of sensor determines conducting phase winding and non-conduction phase winding, and captures the winding current of non-conduction phase winding.Judge
The winding current values whether be more than zero, if so, then circulation perform according to the output signal of position sensor determine conducting around
Group and non-conduction phase winding, judge the operation whether non-conduction phase winding electric current is more than zero.If not, it is determined that non-conduction phase stator
Winding breaks down, and generates fault message and performs S214.
S213, closing power tube fault diagnosis module and stator winding faults diagnostic module.Referring to shown in Fig. 2 b, confirming
The state of position sensor is when breaking down, power tube fault diagnosis module and stator is closed in the comprehensive control module generation
The instruction of winding failure diagnostic module, and it is respectively sent to power tube fault diagnosis module and stator winding faults diagnostic module.
S214, to comprehensive control module send fault message.
Referring to shown in Fig. 2 b, the comprehensive control module is receiving self-detection module, DC voltage/current detection mould
What block, position sensor fault diagnosis module, drive circuit power pipe fault diagnosis module and winding failure diagnostic module were sent
Fault message.Sent after being handled according to the fault message to host computer.By power tube fault diagnosis module and stator around
The status information of group fault diagnosis module is sent to host computer.
S215, take measures or generate halt instruction.
When needing to take measures, halt instruction is generated according to the fault message, and send to brshless DC motor control
Molding block.
The instruction that host computer is received after the technical scheme of the present embodiment, energization assigns instruction to self-detection module, receives
Detection test result is simultaneously transmitted to host computer.If by Autonomous test, sending enabled instruction to each diagnostic module immediately.From brushless
Collection is with handling each road perception information in DC MOTOR CONTROL module, and the perception information is distributed into each diagnostic module.Position
Put the coordination work between sensor fault diagnosis module, drive circuit power pipe fault diagnosis module, winding failure diagnostic module
Need comprehensive control module to be handled, need to close the operation of latter two module once position sensor breaks down, it is to avoid
Wrong diagnosis.The information of all diagnostic modules is all generated and sent to host computer by comprehensive control module, when needing to take measures,
Send and instruct from the comprehensive control module to brshless DC motor control module, change conventional brushless DC motor and only possess
Simple fault-detecting ability, it is contemplated that coupling and incidence relation between each fault mode so that each fault diagnosis module it
Between co-ordination, it is to avoid because certain single fault causes the health status Misdiagnosis of other objects, greatly reinforce
The health monitoring ability of brshless DC motor so that the faults-tolerant control and maintenance and repair ability of brshless DC motor are substantially improved.
Embodiment three
Fig. 6 is the structural representation of the brshless DC motor failure monitoring device in the embodiment of the present invention three.Referring to Fig. 6 institutes
Show, the brshless DC motor failure monitoring device, including：
Data obtaining module 601, for the perception information needed for acquisition motor control in real time；
Position sensor fault diagnosis module 602, for being believed by the perception information acquired in comparison and default failure
Breath, fault diagnosis is carried out to position sensor, generates diagnostic result；
Drive circuit power pipe fault diagnosis module 603, for passing through the perception information acquired in comparison and default event
Hinder information, fault diagnosis is carried out to drive circuit power pipe, generate diagnostic result；
Winding failure diagnostic module 604, for passing through the perception information acquired in comparison and default fault message, opposing connection
Group carries out fault diagnosis, generates diagnostic result；
State sending module 605, for sending the motor adjust instruction determined according to the diagnostic result to brushless direct-current
Motor control module, and send the diagnostic result to host computer.
The technical scheme of the present embodiment, the perception information needed for motor control is obtained by data obtaining module 601 in real time,
Examined respectively by position sensor fault diagnosis module 602, drive circuit power pipe fault diagnosis module 603 and winding failure
Disconnected module 604, compares acquired perception information and default fault message, to position sensor, drive circuit power pipe with
And winding carries out fault diagnosis, diagnostic result is generated, and by state sending module 605, is sent true according to the diagnostic result
Fixed motor adjust instruction sends the diagnostic result to brshless DC motor control module, and to host computer, solves brushless
Direct current generator brings into operation the problem of just can not continuously being monitored to related failure, has reached a variety of of brshless DC motor
On-line Fault is monitored in real time, and can send or store Fault Identification result, in order to motor fault-tolerant control and later stage electrical machmary maintenance
Personnel realize the effect of Quick overhaul.
Further, the perception information includes：The output signal of bus current, winding current and position sensor and electricity
The relation of machine working condition；
And, the default fault message includes：Position sensor is at least four continuous electric machine operation states
Output signal it is unchanged, and, bus current value be equal to zero, and, winding current values be equal to zero.
Shown in Figure 7, the specific implementation of brshless DC motor failure monitoring device is：
Further, the position sensor fault diagnosis module 602 specifically for：
According to the output signal and the relation of electric machine operation state of acquired position sensor, four newest companies are determined
In continuous electric machine operation state, whether the output signal changes；
If the output signal does not change, it is determined that signal occurs for the position sensor without output failure.
Further, in the position sensor and the equal fault-free of the winding, carry out the drive circuit power pipe therefore
Barrier diagnosis, the drive circuit power pipe fault diagnosis module 603 specifically for：
According to the output signal of acquired bus current value and the position sensor, it is determined that with current motor work shape
The label VT (i) and VT (j) of two power tubes of the corresponding first bus current value of state and access drive circuit, wherein, 0<i≦
6,0<j≦6；
When first bus current is equal to zero, it is determined that the second bus current value corresponding with next electric machine operation state
With access drive circuit two power tubes label VT (j) and VT (k), wherein, 0<J≤6,
0<k≦6；
When second bus current is not zero, determine that power tube VT (i) breaks down；
When bus current corresponding with motor all working state is zero, power tube failure, but None- identified are determined
Go out the power tube broken down.
Further, during the position sensor fault-free, the winding failure diagnosis is carried out, the winding failure diagnoses mould
Block 604 specifically for：
According to the output signal and the relation of electric machine operation state of acquired position sensor, brshless DC motor is determined
Conducting phase winding and non-conduction phase winding；
According to acquired winding current values, the current value of non-conduction phase winding is determined；
When the current value of the non-conduction phase winding is equal to zero, it is determined that occurring winding open fault.
Further, described device also includes：
Self-detection module, for sending the motor adjust instruction determined according to the diagnostic result to brshless DC motor
Control module, and before sending the diagnostic result to host computer, after the control power on circuitry of brshless DC motor, according to
Received control instruction carries out power-on self-test survey, and the brshless DC motor control module is adjusted according to motor adjust instruction
Output extremely controls the pwm signal of circuit；
DC voltage and current detection module, is detected and straight for after the power-on self-test is surveyed and passed through, starting DC voltage
Current detecting is flowed, wherein, the DC voltage detection is detected to the over-pressed and under-voltage of bus, the direct current detection pair
The excessively stream of bus is detected.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art it is various it is obvious change,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (6)
1. a kind of brshless DC motor failure monitoring method, it is characterised in that including：
The perception information needed for motor control is obtained in real time, and the perception information includes：Bus current, winding current and position
The output signal of sensor and the relation of electric machine operation state；
Default fault message is obtained, the default fault message includes：Position sensor is at least four continuous motors
Output signal in working condition is unchanged, and, bus current value be equal to zero, and, winding current values be equal to zero；
By the perception information acquired in comparison and default fault message, to position sensor, drive circuit power pipe and
Winding carries out fault diagnosis, generates diagnostic result, including：Output signal according to acquired position sensor works with motor
The relation of state, is determined in the continuous electric machine operation state of newest four, whether the output signal changes；If described
Output signal does not change, it is determined that signal occurs for the position sensor without output failure；
The motor adjust instruction determined according to the diagnostic result is sent to send out to brshless DC motor control module, and to host computer
Send the diagnostic result.
2. according to the method described in claim 1, it is characterised in that in the position sensor and the equal fault-free of the winding
When, the drive circuit power pipe fault diagnosis is carried out,
By the perception information acquired in comparison and default fault message, fault diagnosis is carried out to drive circuit power pipe, it is raw
Into diagnostic result, including：
According to the output signal of acquired bus current value and the position sensor, it is determined that with current motor working condition pair
The the first bus current value and the label VT (i) and VT (j) of two power tubes of access drive circuit answered, wherein, 0<I≤6,0<
j≦6；
When first bus current is equal to zero, it is determined that the second bus current value corresponding with next electric machine operation state and connecing
Enter the label VT (j) and VT (k) of two power tubes of drive circuit, wherein, 0<J≤6,0<k≦6；
When second bus current is not zero, determine that power tube VT (i) breaks down；
When bus current corresponding with motor all working state is zero, power tube failure is determined.
3. the method according to claim any one of 1-2, it is characterised in that sending what is determined according to the diagnostic result
Motor adjust instruction is to brshless DC motor control module, and before sending the diagnostic result to host computer, in addition to：
After the control power on circuitry of brshless DC motor, power-on self-test survey is carried out according to received control instruction；
After the power-on self-test is surveyed and passed through, start DC voltage detection and direct current detection, wherein, the DC voltage inspection
Survey detects that the direct current detection is detected to the excessively stream of bus to the over-pressed and under-voltage of bus.
4. a kind of brshless DC motor failure monitoring device, it is characterised in that including：
Data obtaining module, for the perception information needed for acquisition motor control in real time, the perception information includes：Bus electricity
The output signal and the relation of electric machine operation state of stream, winding current and position sensor；
Position sensor fault diagnosis module, for obtaining default fault message；It is additionally operable to according to acquired position sensing
The output signal of device and the relation of electric machine operation state, are determined in the continuous electric machine operation state of newest four, the output
Whether signal changes；If the output signal does not change, it is determined that signal occurs for the position sensor without output
Failure, generates diagnostic result；
Drive circuit power pipe fault diagnosis module, for obtaining default fault message；It is additionally operable to by acquired in comparison
Perception information and default fault message, fault diagnosis is carried out to drive circuit power pipe, generates diagnostic result；
Winding failure diagnostic module, for by the perception information acquired in comparison and default fault message, being carried out to winding
Fault diagnosis, generates diagnostic result；
State sending module, for obtaining default fault message；It is additionally operable to send the motor determined according to the diagnostic result
Adjust instruction sends the diagnostic result to brshless DC motor control module, and to host computer；
The default fault message includes：Output signal of the position sensor at least four continuous electric machine operation states
It is unchanged, and, bus current value be equal to zero, and, winding current values be equal to zero.
5. device according to claim 4, it is characterised in that in the position sensor and the equal fault-free of the winding
When, carry out the drive circuit power pipe fault diagnosis, the drive circuit power pipe fault diagnosis module specifically for：
According to the output signal of acquired bus current value and the position sensor, it is determined that with current motor working condition pair
The the first bus current value and the label VT (i) and VT (j) of two power tubes of access drive circuit answered, wherein, 0<I≤6,0<
j≦6；
When first bus current is equal to zero, it is determined that the second bus current value corresponding with next electric machine operation state and connecing
Enter the label VT (j) and VT (k) of two power tubes of drive circuit, wherein, 0<J≤6,0<k≦6；
When second bus current is not zero, determine that power tube VT (i) breaks down；
When bus current corresponding with motor all working state is zero, power tube failure is determined, but None- identified sets out
The power tube of raw failure.
6. the device according to claim any one of 4-5, it is characterised in that described device also includes：
Self-detection module, for sending the motor adjust instruction determined according to the diagnostic result to brshless DC motor control
Module, and before sending the diagnostic result to host computer, after the control power on circuitry of brshless DC motor, according to being connect
The control instruction received carries out power-on self-test survey；
DC voltage and current detection module, for after the power-on self-test is surveyed and passed through, starting DC voltage detection and direct current
Stream detection, wherein, the DC voltage detection detects that the direct current detection is to bus to the over-pressed and under-voltage of bus
Excessively stream detected.
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| CN109425827A (en) * | 2017-08-23 | 2019-03-05 | 南京感控通化工产品经营部 | A kind of motor hot-line self-checking up method |
| CN110416973A (en) * | 2019-07-25 | 2019-11-05 | 珠海格力电器股份有限公司 | Motor overvoltage protection circuit, undervoltage protection circuit, voltage protection circuit and motor |
| CN112698201B (en) * | 2020-12-23 | 2022-09-30 | 中国航发控制系统研究所 | FPGA-based fuel system stepping motor fault monitoring method |
| CN113098340B (en) * | 2021-04-02 | 2023-04-25 | 吉林省科英医疗激光有限责任公司 | Accurate positioning control system and control method for correcting rotation angle offset of stepping motor |
| CN117759767B (en) * | 2023-12-22 | 2024-08-23 | 江苏汇智高端工程机械创新中心有限公司 | Multi-state information detection and fault diagnosis digital driving unit and method |
| CN117879446B (en) * | 2024-01-12 | 2024-06-25 | 南京航空航天大学 | Double-salient motor position sensor fault diagnosis method based on non-conducting phase current |
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| CN103414433B (en) * | 2013-07-23 | 2015-12-02 | 西北工业大学 | A kind of Hall position sensor fault emergency method |
| CN103438920A (en) * | 2013-08-23 | 2013-12-11 | 同济大学 | Fault diagnosis method, fault-tolerant control method and fault-tolerant control system of BLDC position sensor |
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