CN106708003B - A kind of electric machine controller fault detection system and method - Google Patents
A kind of electric machine controller fault detection system and method Download PDFInfo
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- CN106708003B CN106708003B CN201510777854.5A CN201510777854A CN106708003B CN 106708003 B CN106708003 B CN 106708003B CN 201510777854 A CN201510777854 A CN 201510777854A CN 106708003 B CN106708003 B CN 106708003B
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- 238000001514 detection method Methods 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 55
- 230000005611 electricity Effects 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 4
- 238000003745 diagnosis Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
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- 238000004364 calculation method Methods 0.000 description 2
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- 239000002253 acid Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/33—Director till display
- G05B2219/33155—Communication between motor current controller and position controller
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Abstract
The invention discloses a kind of electric machine controller fault detection system and methods, belong to electric machine controller technical field, solve the technical problem that traditional electric machine controller fault detection system and method detection efficiency are low, detection range is limited.The electric machine controller fault detection system includes: power supply unit, is used to provide DC bus power supply and accessory power supply for electric machine controller；Load unit is used to provide test load for electric machine controller inverter circuit；Control unit is used to control the operational mode of electric machine controller according to detection instruction, and the operational mode is based on individually testing electric machine controller internal fault measuring point and setting；Acquisition unit, is used to acquire the operating parameter of the power supply unit, the load unit and electric machine controller under different operational modes, and the operating parameter is used to judge the operating status of failure terms point；Display unit is used to show the operating parameter.
Description
Technical field
The present invention relates to electric machine controller technical fields, specifically, are related to a kind of electric machine controller fault detection system
And method.
Background technique
The DC energy of vehicle mounted dynamic battery is reverse into AC energy driving motor by electric vehicle motor controller, in turn
Drive vehicle operation.Electric machine controller includes inverter circuit, driving circuit, auxiliary power circuit, master board circuit, charging electricity
The parts such as road, Rotating speed measring circuit, voltage/current detection circuit, these units constitute a complicated system.Appoint in system
A part of failure can all cause whole system to be shut down.Once breaking down in actual motion, user wishes quickly to know failure classes
Type and abort situation provide foundation in order to Quick overhaul and to improve product.Therefore, the fault type of electric machine controller is examined
Operation popularization that is disconnected and quickly positioning for electric car is most important.
A current electric vehicle motor controller fault detection approach data collecting card multi-purpose greatly acquires Fault Control
Device information, then application software carries out breakdown judge, error detection of this fault detection approach to hardware failure in electric machine controller
The problems such as effect is limited, such as sensor accuracy decline, poor wire connection in vehicle operation, broken string, pure
Software detection is difficult to judge the source of trouble.And often there is the chain reaction of failure in actual motion, lead to traditional software event
Barrier localization method calculation amount is very big, and low efficiency, simultaneous faults locating accuracy is lower, and increases in motor control program
More fault detection programs can occupy software and calculate the time, influence electric machine controller normal work.
Therefore, needing one kind being capable of simpler and bug and the comprehensive electric machine controller fault detection system of detection range
And method.
Summary of the invention
The purpose of the present invention is to provide a kind of electric machine controller fault detection system and methods, with traditional electricity of solution
Machine controller fault detection system and the technical problem that method detection efficiency is low, detection range is limited.
The present invention provides a kind of electric machine controller fault detection system, which includes:
Power supply unit is used to provide DC bus power supply and accessory power supply for electric machine controller；
Load unit is used to provide test load for electric machine controller inverter circuit；
Control unit is used to control the operational mode of electric machine controller according to detection instruction, the operation mould
Formula is based on individually testing electric machine controller internal fault measuring point and setting；
Acquisition unit is used under different operational modes acquire the power supply unit, the load unit and electricity
The operating parameter of machine controller, the operating parameter are used to judge the operating status of failure terms point；
Display unit is used to show the operating parameter.
The operational mode includes: pre-charge circuit test pattern, and in this mode, described control unit is used for according to inspection
The inverter circuit for surveying instruction control electric machine controller to be measured discharges, and successively closure inverter circuit auxiliary switch and master open
It closing, the acquisition unit is used to acquire the inverter circuit input side voltage sensor and bridge arm side voltage sensor numerical value,
Numerical value of the display unit for voltage sensor described in real-time display.
The operational mode includes: inverter circuit test pattern, and in this mode, described control unit is used for according to detection
The opening and closing of instruction control inverter circuit bridge arm, makes the bridge arm in inverter circuit stop working in turn, the acquisition unit
For acquiring the numerical value of the voltage sensor and the load unit electric current, the display unit is for electricity described in real-time display
The numerical value of pressure sensor and the load unit electric current.
The operational mode includes: rotary transformer test pattern, the fault detection system further include: rotation transformation
Device is used to connect in inspection rotary transformer test pattern with signals of rotating transformer processing circuit, in this mode, described
The electrical angle signal of signals of rotating transformer processing circuit output when acquisition unit is used to acquire rotation rotary transformer, it is described aobvious
Show unit for electrical angle signal curve described in real-time display.
The operational mode includes: current sensor test pattern, which is used for DC current in inverter circuit
Sensor and bridge arm output end AC phase currents sensor are detected, when being detected to AC phase currents sensor, institute
It states control unit to work at the same time for controlling the bridge arm in inverter circuit according to detection instruction, the acquisition unit is for acquiring
The numerical value of the AC phase currents sensor, number of the display unit for AC phase currents sensor described in real-time display
Value；
When detecting to DC current sensor, described control unit is used to control inverter electricity according to detection instruction
Upper tube shutdown is connected in first bridge arm upper tube conducting down tube shutdown in road, the second bridge arm down tube, and the load unit is described first
Bridge arm output end provides active load, and the acquisition unit is used for acquiring DC current sensor numerical value, the display unit
In real-time display DC current sensor numerical value.
The load unit includes: one end the first reactor interconnected, the second reactor and third reactor, another
End is connect when detecting to electric machine controller with three bridge arm output ends of electric machine controller inverter circuit respectively, described
First reactor, the second reactor and third reactor connect on circuit with bridge arm and are both provided with ammeter respectively, the load
Unit further include: first resistor, one end are connect with the interconnection end of three reactors, and the other end is spread in detection direct current
The first reactor is replaced to connect with the first bridge arm when sensor.
Power supply unit includes: battery, converter, switch, fuse and power module, and the anode of battery passes through switch difference
It is connect with converter input anode and power module outlet anode, the cathode of battery connects fuse, and passes through fuse
It is connect with converter input cathode and power module outlet cathode, the output end of converter is connected with bus power connector end
Mouth and accessory power supply connectivity port, bus power connector end mouth can pass through the direct current of connecting line and electric machine controller inverter circuit
The connection of bus positive and negative anodes, accessory power supply connectivity port can be connect with the power panel of electric machine controller.
It is provided with voltmeter and ammeter on circuit between the output end and accessory power supply connectivity port of the converter,
Voltmeter is used to monitor the state of charge of battery, and ammeter judges motor control according to its numerical value for showing operating current
The working condition of the power panel of device weak electricity system, driving plate and master control borad.
The accessory power supply connectivity port, rotary transformer, control unit and acquisition unit pass through aviation socket and motor
Controller carries out plug type electrical connection.
The present invention also provides a kind of electric machine controller fault detection methods, this method comprises:
DC bus power supply, accessory power supply are provided for electric machine controller by power supply unit, is motor by load unit
Controller provides test load；
Judge the power panel of electric machine controller weak electricity system, the working condition of driving plate and master control borad；
The operational mode of electric machine controller is controlled according to detection instruction, the operational mode is based on to motor control
The failure terms point of device strong power system is individually tested and is set；
The power supply unit, the load unit and electric machine controller strong power system are acquired under different operational modes
Operating parameter, the operating parameter is used to judge the operating status of failure terms point；
Show the operating parameter.
Electric machine controller fault detection system and method provided by the invention are by introducing external detection power supply, auxiliary detection
Circuit, and targetedly detection program and human-computer interaction interface are devised by way of software and hardware combining, by fault detection
Be divided into two big steps and carry out complete detection to electric machine controller: the first step is to carry out fault detection to electric machine controller weak electricity system；
Fault diagnosis of the second step to electric machine controller strong power system.The fault diagnosis of strong power system is divided into 4 forceful electric power fault detections again
Project, each single item all independent detections are simple clear, do not introduce other fault mechanism, avoid causing failure chain reaction, convenient for fast
Fast fault location, very simple, easy to operate using this set system progress fault location, fault location is credible, saves failure and examines
The disconnected time, and solve the problems, such as that existing detection method detection range is limited.Pass through the precision instrument in fault diagnosis system
The sensor accuracy in electric machine controller can be demarcated, control effect is improved.
Other features and advantages of the present invention will be illustrated in the following description, also, partial becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
It, below will be to required in embodiment description for the clearer technical solution illustrated in the embodiment of the present invention
Attached drawing does simple introduction:
Fig. 1 is the schematic diagram of electric machine controller fault detection system provided in an embodiment of the present invention；
Fig. 2 is the application schematic diagram of electric machine controller fault detection system provided in an embodiment of the present invention；
Fig. 3 is the flow chart of electric machine controller fault detection method provided in an embodiment of the present invention；
Fig. 4 is the applicating flow chart of electric machine controller fault detection method provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram that display unit provided in an embodiment of the present invention shows human-computer interaction interface；
Fig. 6 is the schematic diagram at pre-charge circuit test pattern provided in an embodiment of the present invention interface；
Fig. 7 is the schematic diagram at inverter circuit test pattern provided in an embodiment of the present invention interface；
Fig. 8 is the schematic diagram at rotary transformer test pattern provided in an embodiment of the present invention interface；
Fig. 9 is the schematic diagram at current sensor test pattern provided in an embodiment of the present invention interface.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
Electric machine controller fault detection system provided in an embodiment of the present invention, as shown in Figure 1, the electric machine controller failure is examined
Examining system 1 includes: power supply unit 2, load unit 3, control unit 4, acquisition unit 5 and display unit 6.Wherein, power supply list
Member 2 is for providing DC bus power supply and accessory power supply for electric machine controller.Load unit 3 is used to be electric machine controller inverter
Circuit provides test load.Control unit 4 is used to control the operational mode of electric machine controller according to detection instruction, runs
Mode is based on testing electric machine controller internal fault measuring point and being set.Acquisition unit 5 is used in different operational modes
The operating parameter of lower acquisition power supply unit, load unit and electric machine controller, operating parameter is for judging failure terms point
Operating status.Display unit 6 is for showing operating parameter.The failure terms point that different operational modes is directed to is different, tester
Member according to operating parameter relevant to the failure terms point being directed in specific run mode whether normally come judge the failure survey
Whether pinpointing failure.
In embodiments of the present invention, as shown in Fig. 2, electric machine controller to be measured is traditional electric machine controller for motor vehicle,
It is made of inverter circuit, power panel, driving plate and master control borad etc..Wherein inverter circuit includes: to be connected in parallel on direct current mother
Three IGBT half-bridge modules, voltage sensor VS1 and VS2 and dc-link capacitance R2 between line positive and negative anodes, in direct current mother
The line side power supply positive input A setting DC current sensor CS3, direct current bus bar pressure sensor VS1 and VS2 just
The main switch K2 and main switch resistance R1 that are arranged between pole and the auxiliary switch K1 being arranged in parallel with main switch K2, the first bridge arm
The output end of (leftmost side) is C, and the second bridge arm (intermediate bridge arm) output end is D, and the output end of third bridge arm (rightmost side) is E,
It is provided with AC phase currents sensor CS1 on the output circuit of the first bridge arm, is provided on the output circuit of third bridge arm
AC phase currents sensor CS2.
Power supply unit 2 provided in an embodiment of the present invention includes: battery, converter, switch, fuse and power module, electricity
The anode in pond is connect with converter input anode and power module outlet anode respectively by switch, the cathode connection of battery
Fuse, and connect by fuse with converter input cathode and power module outlet cathode, the output end of converter
It is connected with bus power connector end mouth A ' B ' and accessory power supply connectivity port, bus power connector end mouth A ' B ' can pass through connecting line
Connect with the DC bus positive and negative anodes AB of electric machine controller inverter circuit to be measured, when being detected to electric machine controller according to
Need to provide DC bus power supply for inverter circuit, accessory power supply connectivity port can connect with the power panel of electric machine controller to be measured
It connects, provides accessory power supply when detecting to electric machine controller for electric machine controller to be measured.The output end and auxiliary of converter
Be provided with voltmeter and ammeter between power connector end mouth, voltmeter monitors the state of charge of battery, ammeter numerical value in addition to
It shows outside operating current, is also used as judging a parameter of failure.
It is provided with voltmeter B and ammeter A on circuit between the output end and accessory power supply connectivity port of converter, electricity
Flow table A uses milliammeter, and voltmeter is used to monitor the state of charge of battery, and ammeter is used to show operating current, and according to it
Numerical value judges the working condition of electric machine controller power panel, driving plate and master control borad.
In one embodiment, battery uses the lead-acid battery of 12v, 8Ah, and converter is using isolation 12/24V DC/DC
Converter, switch use manual key switch, and power module uses 220v/12v AC-DC power supply.The anode of battery passes through manual
Key switch is connect with converter input anode and power module outlet anode respectively, and the cathode of battery connects fuse,
And it is connect by fuse with converter input cathode and power module outlet cathode.220v/12v AC-DC power module
For charging for battery.
Load unit 3 includes: the first reactor L1, the second reactor L2, third reactor L3 and first resistor R3, and three
For reactor for simulated machine load, the first reactor, the second reactor, one end of third reactor and first resistor are mutual
Connection, other end C ', D ', E ', E1 ' are carrying out test Shi Keyu inverter circuit to electric machine controller respectively as connectivity port
Bridge arm output end C, D, E connection.First reactor, the second reactor and third reactor are connect on circuit with electric machine controller
Ammeter A1, A2, A3 are all set respectively, and ammeter uses ammeter.Three reactor simulated machine loads, generate three-phase perception
Electric current, resistance R3 cooperate as active load and reactor, generate watt current, can examine electric machine controller DC side electric current
Whether whether sensor accurate, intact.
In one embodiment of the invention, the function of control unit, acquisition unit and display unit can be used as
Host computer is realized that laptop is got in touch with using CAN-USB interface and electric machine controller control unit by laptop, notes
This computer carries out Control & data acquisition to electric machine controller to electric machine controller hair fault detection program.
Further, electric machine controller fault detection system further includes rotary transformer 7, and rotary transformer 7 is carrying out correlation
It is connect when detection with signals of rotating transformer processing circuit in electric machine controller.
In one embodiment of the present invention, motor control fault detection system and electric machine control system are inserted by aviation
Head and common cable connection.Accessory power supply connectivity port, rotary transformer, control unit and acquisition unit pass through aviation socket
It carries out plug type with electric machine controller to be electrically connected, aviation socket carries out accessory power supply between electric machine controller and detection system
And the transmission of control signal.Aviation plug and connection wiring harness, according to the definition of electric machine controller aviation plug and fault detection
System hardware and software demand is designed.The harness and aviation plug that rotary transformer wiring, CAN wiring, auxiliary power supply line are constituted
It is female with the aviation plug one male one of electric machine controller itself, it is defined according to practical loading operation, docking may determine that
Whether aviation plug is intact.
The embodiment of the present invention provides a kind of fault detection method based on electric machine controller fault detection system simultaneously, such as schemes
Shown in 3, this method comprises: step 101, step 102, step 103, step 104 and step 105.In a step 101, pass through
Power supply unit provides DC bus power supply, accessory power supply for electric machine controller, provides survey by load unit for electric machine controller
Examination load.In a step 102, judge the power panel of electric machine controller weak electricity system, the working condition of driving plate and master control borad.?
In step 103, the operational mode of electric machine controller is controlled according to detection instruction, operational mode is based on to electric machine controller
The failure terms point of strong power system is individually tested and is set.At step 104, power supply list is acquired under different operational modes
Member, the operating parameter of load unit and electric machine controller strong power system, operating parameter are used to judge the operation of failure terms point
State.In step 105, operating parameter is shown.As shown in figure 4, after power supply and load are ready to, first to electric machine controller
Light current test is carried out, interconnection a, b, c, d, e is not met when carrying out light current test, plugs aviation plug, close 24V power switch
K3, observation milliammeter numerical value whether in the normal range, if in the normal range, preliminary judgement power panel is normal, driving plate,
Master control borad is normal.Electric machine controller cover board is then opened if abnormal, with a warm rifle observed temperature abnormal phenomenon, usual fault point
Abnormal high temperataure phenomena is had, to judge light current abort situation.If without temperature anomaly, laptop and motor control
Device communication carries out communication detection, thinks that power panel and master board driving plate power unit are normal if communication is normal, at this time
Interconnection a, b, c, d, e are then connect to the burned electric machine controller fault detection program of electric machine controller by CAN network, with closing
Position machine program carries out the fault detection of single step forceful electric power.
The embodiment of the invention provides four forceful electric power fault detection approach, are pre-charge circuit test, inverter electricity respectively
Drive test examination, current sensor test and rotary transformer test cover the common failure of electric machine controller substantially and point occur.Under
Face combines specific detection mode to be described further detection system provided by the invention.
When being detected, display unit shows human-computer interaction interface as shown in figure 5, showing aforementioned four failure thereon
The virtual key of detection mode presses its virtual key when needing to carry out certain detection, will enter corresponding paging
Interface.
Operational mode includes: pre-charge circuit test pattern, which is used for according to input side voltage sensor and bridge arm
Main switch, auxiliary switch, input side voltage sensor and bridge arm in the numerical value change test inverter circuit of side voltage sensor
The working condition of side voltage sensor, in this mode, control unit control inverter circuit according to detection instruction and discharge,
And it is successively closed auxiliary switch and main switch, acquisition unit acquires input side voltage sensor and bridge arm side voltage sensor numerical value,
Display unit real-time display voltage sensor numerical value.
Inverter switching device K1, switch K2, voltage sensor VS1, voltage are mainly tested in pre-charge circuit test pattern
Whether sensor VS2 damages.As shown in fig. 6, the display device display precharge test interface in this mode, shows in the interface
It is shown with electric discharge virtual key, switch K1 virtual key and switch K2 virtual key and returns to main interface virtual key, and show in real time
Show the numerical value of voltage sensor VS1 and voltage sensor VS2.Test process is divided into following steps implementation in this mode:
Step 1: connecting interconnection a, b, c, d, e, aviation plug is plugged, close a switch K3, keeps detection power supply unit inverse
Become device circuit and DC bus power supply is provided, start laptop and networks with electric machine controller, it is burned pre- to electric machine controller
Charging measurement program.
Step 2: pressing discharge button, makes inverter to set the start-up operation of the configuration switch frequency of fundamental frequency, pass through
Three impedors of subtest unit release the busbar voltage after K2, and voltage sensor VS1 numerical value is 24V, electricity at this time
Pressure sensor VS2 numerical value is 0V.
Step 3: test switch K1, presses K1 virtual key, if circuit is normal, corresponding switch K1 is attracted, busbar voltage
I.e. voltage sensor VS2 numerical value slowly increases, if switch K1 is damaged, busbar voltage be will not change.
Step 4: testing switch K2 if switch K1 is intact, being slowly increased to 12V to busbar voltage VS2, it is virtual to press K2
Key, if K2 main switch is intact, switch K2 is attracted, and busbar voltage VS2 increases rapidly 24V.If busbar voltage VS2 cannot rise rapidly
To 24V, then it is assumed that main switch circuit damage, then interpretation main switch damage itself or the slave part damage of main switch again.
By forcing to add 24v voltage, main switch can be attracted and can hear clickly sound if main switch does not damage, and otherwise think that master opens
Itself is closed to damage.
Step 5: by homepage virtual push button back to homepage face is returned to.
Further, operational mode further include: inverter circuit test pattern, the mode are used for according to input side voltage sensor
The working condition of the numerical value test bridge arm circuit of ammeter in device and bridge arm side voltage sensor and load unit, in the mode
In, control unit controls the opening and closing of bridge arm according to detection instruction, and the bridge arm in inverter circuit is made to stop working in turn, and acquisition is single
The numerical value of first collection voltages sensor and ammeter, the numerical value of display unit real-time display voltage sensor and ammeter.
Mainly test whether inverter circuit damages in inverter circuit test pattern.Display unit shows inverter circuit
Test interface.As shown in fig. 7, display switch K2 virtual key, hair 1 virtual key of wave, hair 2 virtual key of wave, hair in the interface
All-wave virtual key and return main interface virtual key, and the numerical value of real-time display voltage sensor VS1, voltage sensor VS2,
Ammeter A1 numerical value, ammeter A2 numerical value and ammeter A3 numerical value.Test process is divided into following steps reality in this mode
It applies:
Step 1: having burnt into fault diagnostic program, K2 virtual push button is pressed, switch K2 is attracted, then VS1 and VS2 number
Value may each be about 24v.
Step 2: pressing virtual hair wave key 1, then the first, second bridge arm works in inverter circuit, and third bridge arm is shut；
Pressing virtual hair wave key 2, then first, the work of third bridge arm, the second bridge arm are shut, and pressing virtual hair all-wave key, then three bridge arms all work,
It works according to space vector hair wave mode.
If inverter circuit is normal, in 1 numerical value of ammeter, 2 numerical value of ammeter and 3 numerical value of ammeter and actual circuit
Numerical value has the relatively good goodness of fit.Prove current sensor and accuracy.
Step 3: by homepage virtual push button back to homepage face is returned to.
Operational mode includes: rotary transformer test pattern, which is used for according to signals of rotating transformer processing circuit
The working condition of the electrical angle signal testing signals of rotating transformer processing circuit of output, in this mode, acquisition unit acquisition
The electrical angle signal of signals of rotating transformer processing circuit output, display unit real-time display electrical angle when rotating rotary transformer
Signal curve.
Signals of rotating transformer processing circuit is mainly tested in rotary transformer test pattern whether to damage and aviation
Whether plug is damaged.Display unit shows rotary transformer test interface, as shown in figure 8, real-time display rotation becomes in the interface
Depressor electrical angle curve and return main interface virtual key.Test process is divided into following steps implementation in this mode.
Step 1: the aviation plug of grafting electric machine controller fault detection system and electric machine controller, and motor control is provided
Device 24V accessory power supply processed, this pacing examination can not meet interconnection a, b, c, d, e.
Step 2: rotation rotary transformer turning handle, if rotary transformer circuit is normal, electric machine controller Master control chip will
It send after the position signal processing of rotary transformer to display unit (host computer) and shows.Upper figure is rotary transformer up time in Fig. 8
Needle corresponding electrical angle curve when rotating, the following figure are corresponding electrical angle curve when rotary transformer rotates counterclockwise.
Step 3: changing rotary transformer rotation speed, by the situation of change for observing rotary transformer electrical angle curve
Whether normally come whether signals of rotating transformer processing circuit damages, angle change curve can also subtract if the rotation speed the slow
Slowly.
Step 4: by homepage virtual push button back to homepage face is returned to.
Operational mode includes: current sensor test pattern, and the mode is for sensing DC current in inverter circuit
Device and bridge arm output end AC phase currents sensor are detected, and when detecting to AC phase currents sensor, control is single
Member is worked at the same time for controlling the bridge arm in inverter circuit according to detection instruction, and acquisition unit is for acquiring AC phase currents biography
The numerical value of sensor, display unit are used for the numerical value of real-time display AC phase currents sensor.It is carried out to DC current sensor
When detection, control unit is used to control the first bridge arm upper tube conducting down tube in inverter circuit according to detection instruction and turns off, and second
Upper tube shutdown is connected in bridge arm down tube, and load unit provides active load for the first bridge arm output end, and acquisition unit is straight for acquiring
Galvanic electricity flow sensor numerical value, display unit are used for real-time display DC current sensor numerical value.
Current sensor test pattern predominantly detects the work of AC phase currents sensor CS1, CS2 and current sensor CS3
Make state, display unit shows current sensor test interface, as shown in figure 9, showing that DC current sensor is surveyed in the interface
It tries virtual key, AC phase currents sensor test virtual key and returns to main interface virtual key, and real-time display direct current fluxion
Value and AC phase currents sensor current profile.Test process is divided into following steps implementation in this mode.
Step 1: detection current sensor CS3, is connected to E1 ' from E ' for interconnection and resistance R3 is accessed half-bridge circuit, press
DC current sensor test virtual key enables the first bridge arm (leftmost side) upper tube of three-phase inverter circuitry be connected, down tube shutdown；
Second bridge arm (intermediate bridge arm) down tube conducting, upper tube shutdown, flows through in current flowing resistance R3, with current sensor CS3 at this time
Size of current it is equal, correction can be compared with the correction instrument numerical value in failure correction system.
Step 2: detection AC phase currents sensor CS1, CS2, by three half-bridge circuits respectively with subtest unit three
A inductive reactance connection.AC phase currents sensor test virtual key is pressed, inverter work send out wavy state in space vector, aobvious
Show unit by sensor sample to current signal show, compared with actual instrument, failure examination can be carried out, with
And precision determines.
Step 3: by homepage virtual push button back to homepage face is returned to.
Electric vehicle motor controller is a complicated system, and any portion failure can all lead to whole system in system
It shuts down.The operation that the fault type of electric machine controller diagnosed and quickly positioned for electric car is promoted most important.It is practical
Often there is the chain reaction of failure in operation, causes traditional software fault positioning method calculation amount very big, simultaneous faults is fixed
Position accuracy rate it is lower, in some cases software fault positioning even cisco unity malfunction, this patent be exactly be solve in practice this
Class problem and initiate to apply.
Electric machine controller fault detection system and method provided by the invention are by introducing external detection power supply, auxiliary detection
Circuit, and targetedly detection program and human-computer interaction interface are devised by way of software and hardware combining, by fault detection
Be divided into two big steps: the first step is to carry out fault detection to electric machine controller weak electricity system；Second step is to electric machine controller forceful electric power system
The fault diagnosis of system.The fault diagnosis of strong power system is divided into 4 forceful electric power fault detection projects, each single item all independent detections, letter again
It is single clear, other fault mechanism is not introduced, avoids causing failure chain reaction, is positioned convenient for fast failure, is used this set system
Progress fault location is very simple, easy to operate, and fault location is credible, saves failure diagnosis time, and solve existing inspection
The limited problem of survey method detection range.The biography in electric machine controller can be demarcated by the precision instrument in fault diagnosis system
Sensor accuracy improves control effect.
While it is disclosed that embodiment content as above but described only to facilitate understanding the present invention and adopting
Embodiment is not intended to limit the invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of electric machine controller fault detection system characterized by comprising
Power supply unit is used to provide DC bus power supply and accessory power supply for electric machine controller, wherein in the power supply unit
It is inside provided with ammeter, for showing operating current, wherein the numerical value of the operating current is for characterizing electric machine controller light current
The working condition of the power panel of system, driving plate and master control borad；
Load unit is used to provide test load for electric machine controller inverter circuit；
Control unit is used to control the operational mode of electric machine controller according to detection instruction, the operational mode base
It is individually tested and is set in the failure terms point to electric machine controller strong power system；
Acquisition unit is used under different operational modes acquire the power supply unit, the load unit and motor control
The operating parameter of device strong power system processed, the operating parameter are used to judge the operating status of failure terms point；
Display unit is used to show the operating parameter.
2. electric machine controller fault detection system according to claim 1, which is characterized in that the operational mode includes:
Pre-charge circuit test pattern, in this mode, described control unit are used to control electric machine controller to be measured according to detection instruction
Inverter circuit discharge, and be successively closed inverter circuit auxiliary switch and main switch, the acquisition unit is for acquiring
The inverter circuit input side voltage sensor and bridge arm side voltage sensor numerical value, the display unit are used for real-time display
The numerical value of the voltage sensor.
3. electric machine controller fault detection system according to claim 1, which is characterized in that the operational mode includes:
Inverter circuit test pattern, in this mode, described control unit are used to control inverter circuit bridge arm according to detection instruction
Opening and closing, so that the bridge arm in inverter circuit is stopped working in turn, the acquisition unit is for acquire the inverter circuit defeated
Enter the numerical value of side voltage sensor and bridge arm side voltage sensor and the load unit electric current, the display unit is for real-time
Show the numerical value of the voltage sensor and the load unit electric current.
4. electric machine controller fault detection system according to claim 3, which is characterized in that the operational mode includes:
Rotary transformer test pattern, the fault detection system further include: rotary transformer is used in inspection rotary transformer test
It is connect in mode with signals of rotating transformer processing circuit, in this mode, the acquisition unit becomes for acquiring rotation rotation
The electrical angle signal that signals of rotating transformer processing circuit exports when depressor, the display unit is for electric angle described in real-time display
Spend signal curve.
5. electric machine controller fault detection system according to claim 4, which is characterized in that the operational mode includes:
Current sensor test pattern, the mode are used to exchange DC current sensor in inverter circuit with bridge arm output end mutually electricity
Flow sensor is detected, and when detecting to AC phase currents sensor, described control unit is used for according to detection instruction
Bridge arm in control inverter circuit works at the same time, and the acquisition unit is used to acquire the number of the AC phase currents sensor
Value, numerical value of the display unit for AC phase currents sensor described in real-time display；
When detecting to DC current sensor, described control unit is used to be controlled in inverter circuit according to detection instruction
Down tube shutdown is connected in first bridge arm upper tube, and upper tube shutdown is connected in the second bridge arm down tube, and the load unit is first bridge arm
Output end provides active load, and the acquisition unit is for acquiring DC current sensor numerical value, and the display unit is for real
When show DC current sensor numerical value.
6. electric machine controller fault detection system according to claim 5, which is characterized in that the load unit includes:
One end the first reactor interconnected, the second reactor and third reactor, the other end are carried out to electric machine controller respectively
Connect when detection with three bridge arm output ends of electric machine controller inverter circuit, first reactor, the second reactor and
Third reactor is connect on circuit with bridge arm is both provided with ammeter respectively, the load unit further include: first resistor, one
End is connect with the interconnection end of three reactors, and the other end is when detecting DC current sensor instead of the first reactor and the
The connection of one bridge arm.
7. electric machine controller fault detection system according to claim 6, which is characterized in that power supply unit include: battery,
Converter, switch, fuse and power module, the anode of battery by switch respectively with converter input anode and power supply mould
The connection of block output head anode, the cathode of battery connects fuse, and passes through fuse and converter input cathode and power supply mould
The connection of block negative pole of output end, the output end of converter are connected with bus power connector end mouth and accessory power supply connectivity port, bus
Power connector end mouth can be connect by connecting line with the DC bus positive and negative anodes of electric machine controller inverter circuit, and accessory power supply connects
Connecing port can connect with the power panel of electric machine controller.
8. electric machine controller fault detection system according to claim 7, which is characterized in that the output end of the converter
Voltmeter and the ammeter are provided on circuit between accessory power supply connectivity port, voltmeter is used to monitor the electricity of battery
Amount state.
9. electric machine controller fault detection system according to claim 8, which is characterized in that the accessory power supply connecting pin
Mouth, rotary transformer, control unit and acquisition unit carry out plug type with electric machine controller by aviation socket and are electrically connected.
10. a kind of electric machine controller fault detection method characterized by comprising
DC bus power supply, accessory power supply are provided for electric machine controller by power supply unit, is motor control by load unit
Device provides test load；
Judge the power panel of electric machine controller weak electricity system, the working condition of driving plate and master control borad；
The operational mode of electric machine controller is controlled according to detection instruction, the operational mode is based on strong to electric machine controller
The failure terms point of electric system is individually tested and is set；
The fortune of the power supply unit, the load unit and electric machine controller strong power system is acquired under different operational modes
Row parameter, the operating parameter are used to judge the operating status of failure terms point；
Show the operating parameter.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111886552B (en) * | 2017-06-08 | 2024-03-26 | 康明斯公司 | Diagnostic system and method for isolating failure modes of a vehicle |
| CN107390069B (en) * | 2017-08-17 | 2023-08-04 | 西安北方光电科技防务有限公司 | Rapid fault detection method and system |
| CN109426282A (en) * | 2017-08-28 | 2019-03-05 | 美的集团股份有限公司 | Control system, method and heating equipment |
| CN107957723B (en) * | 2017-12-22 | 2024-09-10 | 广州市威盈玛机电科技有限公司 | Performance test system, main system and test method of motor controller |
| CN111025036B (en) * | 2018-10-10 | 2022-03-22 | 上海汽车集团股份有限公司 | Vehicle load testing device |
| CN110370318B (en) * | 2019-07-30 | 2020-11-06 | 南京昱晟机器人科技有限公司 | Industrial robot with self fault detection function |
| CN112415378A (en) * | 2019-08-19 | 2021-02-26 | 顺丰科技有限公司 | Motor circuit break detection system, unmanned aerial vehicle and motor circuit break detection method |
| CN111257750A (en) * | 2019-11-14 | 2020-06-09 | 杭州广安汽车电器有限公司 | Automatic testing device for controller and positioning method thereof |
| CN113315091B (en) * | 2020-02-26 | 2023-07-11 | 比亚迪股份有限公司 | Motor control system and vehicle |
| CN113422347B (en) | 2020-03-17 | 2023-03-14 | 比亚迪股份有限公司 | Motor control system and vehicle |
| CN111752260A (en) * | 2020-06-18 | 2020-10-09 | 威迪斯电机技术(芜湖)有限公司 | Motor controller offline automatic test system and method |
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