WO2014045727A1 - 故障記録装置および故障記録方法 - Google Patents
故障記録装置および故障記録方法 Download PDFInfo
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- WO2014045727A1 WO2014045727A1 PCT/JP2013/070942 JP2013070942W WO2014045727A1 WO 2014045727 A1 WO2014045727 A1 WO 2014045727A1 JP 2013070942 W JP2013070942 W JP 2013070942W WO 2014045727 A1 WO2014045727 A1 WO 2014045727A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- G—PHYSICS
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
- G06F11/0727—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in a storage system, e.g. in a DASD or network based storage system
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- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0751—Error or fault detection not based on redundancy
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- G—PHYSICS
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- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
- G01R19/2509—Details concerning sampling, digitizing or waveform capturing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
- G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- G—PHYSICS
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- G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
- G06F2201/805—Real-time
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a failure recording apparatus and a failure recording method suitable for use in detecting a failure of an electric vehicle or the like.
- the failure recording apparatus of the present invention provides: When the failure detection means detects a failure to be controlled, the failure detection means comprises failure record control means for selecting data to be recorded according to the detected failure content, and performing failure recording processing for recording the selected data in the recording means, In the failure recording process, when a plurality of failures are detected within a preset set time, the failure record control means selects the failure content detected first and the failure corresponding to the failure. The above data is recorded, and for the failure detected after the second time, only the failure content is recorded in the recording means.
- the failure recording control means executes a failure recording process.
- the failure record control means responds to the failure content such as the failure name and the failure for the first failure (A).
- the selected data is recorded on the recording means.
- the failure recording control means records only the failure content such as the failure name in the recording means for the failure (B) detected after the second time within the set time, while the failure after the set time has passed, Do not record. Therefore, it is possible to grasp the contents of a plurality of failures that have occurred in a chain, and to understand the time-series context.
- the data selected according to the failure is recorded, so that detailed analysis can be performed, but data is not stored for failures other than the first time.
- the required recording capacity can be kept low as compared with the case where data is recorded for all of a plurality of failures occurring in a chain.
- FIG. 3 is a block diagram illustrating a main part of the failure recording apparatus according to the first embodiment.
- 3 is a flowchart showing a flow of a failure recording process of the failure recording apparatus according to the first embodiment.
- 3 is a time chart illustrating an operation example of the failure recording apparatus according to the first embodiment.
- 1 is an overall system diagram showing an electric vehicle equipped with a failure recording device according to Embodiment 1.
- FIG. It is a block diagram which shows the principal part of the failure recording device of Embodiment 2. It is operation
- FIG. 10 is a flowchart illustrating a flow of a main part of a failure recording process of the failure recording apparatus according to the third embodiment.
- Embodiment 1 A failure recording apparatus according to the first embodiment will be described.
- the braking force control system of the braking control device according to the first embodiment includes an integrated controller 100, a brake controller 101, and a motor controller 103.
- the integrated controller 100 performs EV system start and stop control, driving force calculation and motor output command, deceleration force calculation, motor / brake output command, EV system diagnosis, fail-safe function, and the like. Further, the integrated controller 100 integrates and controls the brake controller 101 and the motor controller 103 so as to obtain the driver requested braking torque at the time of regenerative cooperative brake control or the like.
- the integrated controller 100 receives battery charge capacity information from the battery controller 102, vehicle speed information from the sensor group 110, brake operation information, brake operation information, master cylinder hydraulic pressure information, and the like.
- the brake controller 101 inputs a signal from the integrated controller 100 and master cylinder hydraulic pressure information of the brake hydraulic pressure unit 250. And according to a predetermined control law, while outputting a drive command with respect to the brake hydraulic pressure unit 250, the target value of regenerative cooperative braking torque is output with respect to the integrated controller 100.
- the motor controller 103 is connected via an inverter 210 to a traveling electric motor 230 connected to drive wheels (not shown).
- the motor controller 103 controls motor torque and motor rotation speed generated by the traveling electric motor 230 during traveling, and is generated by the traveling electric motor 230 based on the regeneration command from the integrated controller 100 during braking. Controls regenerative braking torque.
- an inverter 210 and a charger 260 are connected to the battery 240 via a DC / DC junction box 220. Further, an auxiliary battery 270 is connected to the DC / DC junction box 220, and electric power is supplied from the auxiliary battery 270 to the controllers 100 to 103.
- the failure recording apparatus according to the first embodiment is mounted on any of the controllers 100 to 103, for example, the integrated controller 100, and includes a data detection unit 1, a failure determination unit 2, and a failure recording control unit 3. ing.
- the data detection unit 1 includes a sensor group 110 included in the control system of the electric vehicle and the controllers 101 to 103 to control objects (inverter 210, DC / DC junction box 220, electric motor 230 for traveling, battery 240, brake hydraulic pressure). Various data relating to the unit 250 and the like are detected.
- the failure determination unit 2 determines failure based on the data input to the data detection unit 1 based on whether the data is within a preset normal value range or other abnormal values. .
- the failure record control unit 3 includes an activation determination unit 31, an initial failure determination unit 32, a failure analysis data recording unit 33, a fixed period measurement unit 34, and a failure name recording unit 35.
- the activation determination unit 31 determines activation and termination of the entire failure recording apparatus according to the first embodiment.
- the activation determination unit 31 is activated for the failure determination unit 2 and the initial failure determination unit 32 when each controller 100 to 103, which is a control system including a failure recording device, is activated so that the electric vehicle can run.
- the flag is output and the vehicle is brought into a non-activated state upon completion of traveling, the output of the activated flag is terminated.
- the failure determination unit 2 performs the above-described failure determination while the activation flag is input from the activation determination unit 31. When the activation flag is input, the failure determination unit 2 initializes and terminates the failure determination. If the failure determination unit 2 determines that a failure has occurred, the failure determination unit 2 outputs the failure name as the failure content to the initial failure determination unit 32 and the failure name recording unit 35.
- the initial failure determination unit 32 operates while the activation flag is input, and determines whether or not the failure is the first one. When the input of the activation flag is completed, the determination is terminated and initialized. The When the failure name is received from the failure determination unit 2 for the first time after the start of the input of the activation flag, the initial failure determination unit 32, the failure determination data recording unit 33, and the measurement for a certain period of time. An initial failure flag indicating the occurrence of the first failure is sent to the unit 34.
- the failure analysis data recording unit 33 uses the initial failure flag indicating the first failure occurrence received from the initial failure determination unit 32 as a trigger to select data items to be recorded according to the failure contents, and regarding these data items, failure confirmation is performed. Record the data before and after chronologically. That is, in the failure analysis data recording unit 33, one or a plurality of data items (for example, current value, voltage value, output pulse, etc.) set in advance corresponding to the failure content (failure name) are set. In the failure analysis data recording unit 33, when the initial failure flag is input, the data items set corresponding to the failure content (failure name) from various data obtained through the data detection unit 1 are related. Record the sorted data. Further, at the time of recording this data, the failure analysis data recording unit 33 records data before and after the time when the occurrence of the failure is confirmed in time series. Therefore, the failure analysis data recording unit 33 serves as both failure recording control means and recording means.
- data items for example, current value, voltage value, output pulse, etc.
- the fixed period measurement unit 34 starts measurement for a fixed period (pt in FIG. 3) that is a preset time with the initial failure flag input when the first failure occurs as a trigger. Then, the fixed period measurement unit 34 sends a fixed period end flag that reports the end of the fixed period to the failure name recording unit 35 when the fixed period pt has elapsed from the start of measurement.
- the failure name recording unit 35 records, as recording means, the content of a failure (failure name) of a failure that has occurred until the end of a certain period of time is input, with the initial failure flag input when the first failure occurs as a trigger. .
- the failure name recording unit 35 receives the end flag for a certain period and stops recording the failure name.
- step S1 the activation determination unit 31 determines whether or not the activation flag is activated, that is, whether or not the failure recording device is activated. The process proceeds to step S2 in the activated state, and step S1 in the non-activated state. Repeat the determination.
- step S2 the failure determination unit 2 determines whether or not a failure has occurred. If a failure has occurred, the process proceeds to step S3. If a non-failure has occurred, step S2 is repeated.
- step S3 that proceeds when a failure occurs, the initial failure determination unit 32 determines whether or not it is the first failure, and proceeds to step S4 when it is the first failure, and proceeds to step S6 when it is not the first failure.
- step S4 which proceeds at the time of the first failure, the failure analysis data recording unit 33 selects a data item relating to the first failure and records data of the selected data item, and then proceeds to step S5.
- step S5 the measurement of the fixed period pt by the fixed period measurement unit 34 is started, and then the process proceeds to step S7.
- step S6 which proceeds when it is determined in step S3 that it is not the first failure, it is determined whether or not it is in the fixed period pt in which the measurement is started in step S5. The process proceeds to S7, and if the fixed period pt has ended, the process returns to Step S2.
- step S7 the failure name recording unit 35 records the detected failure content (failure name), and then proceeds to step S8.
- the failure name recording unit 35 first records the first failure that occurs at the time when measurement of the fixed period pt is started, and then also names the failures that occurred during the measurement of the fixed period pt in a chained manner. Record.
- step S8 it is determined whether or not the activation of the activation flag has been completed. If not completed, the process returns to step S2, and if completed, the process proceeds to step S9.
- step S9 the failure determination unit 2 and the initial failure determination unit 32 are initialized, and the process returns to step S1.
- failures A, B, and C occur during the first travel from the time t1 to the time t2, and the failures D and E occur during the second travel from the time t3 to the time t4.
- F occurs as an example.
- the activation determination unit 31 activates the activation flag at t1 and t3 when the first traveling and the second traveling are started, and ends the activation flag at t2 and t4 when each traveling is finished. During activation of the activation flag, the failure determination unit 2 and the initial failure determination unit 32 each perform determination.
- the failure determination unit 2 determines that the first failure, the failure A, has occurred (determined as occurring in step S2), the fact that the failure A has occurred and the failure content (failure name) is the first failure.
- the data is output to the determination unit 32 and the failure name recording unit 35. Since the failure A is the first failure, the initial failure determination unit 32 outputs an initial failure flag to the failure analysis data recording unit 33, the fixed period measurement unit 34, and the failure name recording unit 35.
- the failure analysis data recording unit 33 receives the initial failure flag, selects data items (first to third data items) set in advance for use in the analysis of the failure A from various data, and The data items before and after the occurrence of the failure A are recorded in the failure analysis data recording unit 33 (based on the process of step S4).
- three types of data items that is, a first data item, a second data item, and a third data item are set as data items for the failure A. Therefore, the failure analysis data recording unit 33 records the data d11 to d15, d21 to d25, and d31 to 35 of these first to third data items in time series.
- the fixed period measurement unit 34 receives the initial failure flag, starts measurement of the fixed period pt from the time t11 when the failure A occurred (step S5), and the failure name recording unit 35.
- the failure content (failure name) of this failure A is recorded (step S7).
- the failure determination unit 2 confirms that the failure B has occurred as in the case of the failure A. Are output to the initial failure determination unit 32 and the failure name recording unit 35 together with the failure content (failure name).
- the initial failure determination unit 32 since it is the second failure, the initial failure determination unit 32 does not output the initial failure flag, and therefore the failure analysis data recording unit 33 does not record the data item.
- the failure name recording unit 35 records the failure content (failure name) of failure B (based on the processing of steps S3 ⁇ S6 ⁇ S7).
- failures A and B for example, first, a failure in which the voltage of the auxiliary battery 270 drops abnormally occurs, and the motor that receives power supply from the auxiliary battery 270 is used. There may be a failure in which a control device such as the controller 103 outputs an abnormal output.
- an unchained fault C has occurred at time t13 thereafter.
- the measurement of the pt is completed for a certain period, so that the failure content (failure name) of the failure C is not recorded and the data is not recorded (steps S2 ⁇ S3).
- the failure name recording unit 35 records the failure A as the first failure and the failure B that has occurred thereafter in time series.
- the failure analysis data recording unit 33 records data d11 to d15, d21 to d25, and d31 to d35 before and after the occurrence of the failure A (t11).
- failure A failure A
- failure B failure A
- time series data before and after the first failure A can be extracted from the failure analysis data recording unit 33.
- the first fault D that occurred at time t31 is the fault details (fault name) and the data of the first to third data items. d41 to d45, d51 to d55, and d61 to d65 are recorded.
- the contents of the first to third data items may be the same as or different from the contents of the data items set when the failure A occurs.
- the failure content (failure name) is recorded in the failure name recording unit 35 in time series.
- the failure content (failure name) is not recorded for the failure F that has occurred outside the pt for a certain period of time in an unchained manner.
- the effects of the failure recording apparatus according to the first embodiment are listed below.
- a data detection unit 1 as data detection means for detecting data indicating the state of the controlled object; Recording means for recording data (failure analysis data recording unit 33, failure name recording unit 35);
- a failure determination unit 2 as failure detection means for detecting a failure to be controlled;
- the failure recording control unit 3 as a failure recording control unit that performs failure recording processing for selecting data to be recorded according to the detected failure content and recording the selected data in the recording unit;
- a failure recording device comprising: If a plurality of failures are detected within a certain period (set time) pt in the failure recording process, the failure record control unit 3 first detects the failure details (failures A and D) and the failure.
- failure analysis data recording unit 33 and the failure name recording unit 35 are controlled so as to record only. Therefore, for the faults B and E that have occurred in a chain with respect to the faults A and D, since the fault contents (fault names) are recorded in the fault name recording unit 35, the context of the fault can be grasped. Failure analysis can be performed in more detail compared to recording only.
- the fault contents and data are recorded only for the faults with high importance, and the faults A, B or D, E that occur in a chain may not be recorded. There was sex. In this case, failure analysis may be difficult for the failures A, B, D, and E that occur in a chain.
- the details of the failures (failure names) of the failures A, B, D, and E that occur in a chain are recorded in time series, so that detailed analysis is possible.
- the data items (first to third) necessary for the analysis of each fault A and D Is selected.
- data d11 to d15, d21 to d25, d31 to d35 and data d41 to d45, d51 to d55, d61 to d65 before and after the occurrence of the failure are recorded in time series. For this reason, detailed failure analysis is possible for the failures A and D most necessary for cause analysis as a plurality of failures that occur in a chain.
- a failure recording method comprising: is executed.
- the failure contents (failure names) of the failures A, B, D, and E that occur in a chain are recorded in a time series, so that detailed analysis is possible.
- data items (first to third) that are necessary for analysis are data before and after the occurrence of the fault. d11 to d15, d21 to d25, d31 to d35 and data d41 to d45, d51 to d55, d61 to d65 are recorded in time series.
- failures A and D most necessary for cause analysis as a plurality of failures that occur in a chain. Furthermore, since the faults B and E that occur in a chain after the first faults A and D are recorded only in the content of the fault, the required recording capacity is lower than that in which data is recorded for all faults. Can be suppressed. Moreover, since the failure content (failure name) is not recorded for the unchained failure (C, F) after the lapse of the predetermined period pt, the necessary recording capacity can be further suppressed.
- the failure recording apparatus of the first embodiment is The failure recording control unit 3 records data in the failure recording process only once from the start to the end of the apparatus. Therefore, the recording capacity of the apparatus can be kept low compared with the apparatus that records all failures from the start to the end of the apparatus. In addition, it is possible to record up to failures that are less relevant to the failure that occurred in the first time, and to prevent the analysis work from becoming complicated.
- the failure recording apparatus of the first embodiment is
- the failure record control unit 3 includes a failure analysis data recording unit 33 as a data item setting unit that sets a data item to be acquired in accordance with a failure when recording data in the failure recording process. And Therefore, by recording only the data items necessary for the analysis according to the failure, it is possible to prevent recording unnecessary data for the analysis, and perform a sufficient and detailed analysis while keeping the required recording capacity low. Is possible.
- the failure recording apparatus of the second embodiment is different from the first embodiment in the way of recording in the failure analysis data recording unit 233.
- the failure analysis data recording unit 233 shown in FIG. 5 performs a sampling characteristic changing process that can change the measurement width and the sampling period in accordance with the data items to be recorded when recording data in the failure recording process.
- a portion 233a is provided.
- FIG. 6A shows the operation of the sampling characteristic change processing unit 233a when the failure A occurs.
- the failure analysis data recording unit 233 has a common measurement width and sampling period for each item.
- FIG. 6B shows the operation of the sampling characteristic change processing unit 233a when the failure B occurs.
- the sampling characteristic change processing unit 233a changes the measurement width and the sampling period of the first data item and the third data item as compared with the case where the failure A in FIG. 6A occurs.
- the number of sampling data is the same as in the case of failure A, but the measurement width is shortened and the sampling cycle is also shortened.
- the first data item in the case of failure B is data that changes in a short time such as the current flowing through the electric motor 230 for traveling
- at least the measurement width should be shortened or the sampling cycle should be shortened. It is preferable to acquire detailed data. Therefore, as shown in FIG. 6B, by shortening the measurement width of the first data item and shortening the sampling period, it is possible to reliably acquire changes in data that change in a short time while suppressing the total number of data to be acquired. It becomes possible.
- the measurement width is increased and the sampling period is also increased.
- the number of sampling data is smaller than that in the case of the failure A.
- the measurement width is increased and the sampling period is increased to obtain data that is not acquired discretely. By increasing the number, it is possible to perform a detailed failure analysis while the number of data is small.
- the measurement width and sampling period are substantially the same as in the case of failure A shown in FIG. 6A. Further, the measurement width and the sampling cycle described above are performed in accordance with differences in the characteristics of each data item, the method of analysis, or the type of data required for analysis, as described above, depending on the content of the failure.
- the failure recording apparatus of the second embodiment includes a sampling characteristic change processing unit 233a that can change at least one of the measurement width and the sampling period in accordance with the data item to be recorded when recording data in the failure recording process. It is characterized by. Therefore, detailed failure analysis can be performed based on the data items recorded according to the failure contents without greatly increasing the number of data to be recorded. For example, a detailed failure analysis can be performed for all data items by always increasing the measurement width or shortening the sampling period. However, in that case, it is necessary to increase the data recording capacity. On the other hand, by setting the measurement width and sampling period of data items optimally according to the failure content, detailed analysis according to the failure content is possible without increasing the recording capacity. Become. Furthermore, in the second embodiment, since both the measurement width and the sampling period can be changed and set, both the detailed failure analysis and the reduction of the recording amount are more compatible than the change of only one of them. It becomes possible.
- FIG. 7 shows a failure recording apparatus according to the third embodiment.
- a specific failure initial determination unit 310 and a second failure analysis data recording unit 320 are added to the failure record control unit 3.
- the specific failure initial determination unit 310 determines whether or not the specific failure having a high importance set in advance is the first time, and outputs the initial specific failure flag to the second failure analysis data recording unit 320 in the case of the first failure.
- the failure having high importance includes a failure of the inverter 104, the integrated controller 100 related to the control thereof, the battery controller 102, the motor controller 103, and the like.
- the second failure analysis data recording unit 320 records data in time series for each data item before and after the occurrence of the specific failure.
- the data of the data item is recorded in the second failure analysis data recording unit 320 in time series for the first time.
- FIG. 8 shows a main part of the flow of processing in the failure recording control according to the third embodiment. This process is added to the flow that proceeds when a failure occurs in step S2 of the flowchart of FIG. 2 showing the flow of the failure recording control of the second embodiment.
- step S31 that proceeds when a failure occurs in step S2, it is determined whether or not the first specific failure has occurred. If the first specific failure has occurred, the process proceeds to step S32, and if it is not the first specific failure, step S33. Proceed to
- step S32 data of each data item before and after the occurrence of the first specific failure is recorded in the second failure analysis data recording unit 320, and then the process proceeds to step S3. Since other processes are the same as those in the first embodiment, illustration and description thereof are omitted.
- the failure record control unit 3 is a specific failure initial determination unit that determines whether or not this failure is the first occurrence of the specific failure after the device is started when a specific failure having a high importance level set in advance occurs.
- a second failure analysis data recording unit 320 that records data selected in response to the failure when the specific failure initial determination unit 310 determines that it is the first time, It is characterized by having. Therefore, in the third embodiment, when a specific failure having a high degree of importance occurs, a certain period of time has passed since the occurrence of the failure other than the specific failure regardless of whether or not a failure other than the specific failure has occurred.
- the failure recording apparatus of the present invention has been described above based on the embodiment. However, the specific configuration is not limited to this embodiment, and the gist of the invention according to each claim of the claims is described. Unless it deviates, design changes and additions are allowed.
- Embodiment 1 although the example applied to an electric vehicle was shown as a failure recording device, application is not limited to an electric vehicle as long as it detects and records the failure of a control object, and others It can be applied to vehicles, industrial equipment, electrical equipment, and the like.
- the example in which three types of data items are recorded as the data items of data to be recorded in the failure analysis data recording unit has been described.
- the number of data items corresponding to the failure is not limited to 3, and the failure may be a failure. Depending on the situation, a number other than 1 or 3 may be used.
- the example in which the sampling characteristic change processing unit can be set by changing both the measurement width and the sampling period has been described. However, even if only one of them is changed, the sampling characteristic is always constant. It is possible to perform recording corresponding to the characteristics of the data item while suppressing the number of data to be recorded as compared with the above.
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Abstract
Description
また、このような故障記録装置では、全ての故障について、必要なデータを全て記録すると大きな記録容量が必要である。
そこで、予め故障の内容に重要度を設定しておき、現在記録されている故障よりも重要度の高い故障が新に発生した場合に、過去の故障を上書きして現在の記録を記録する技術が知られている(例えば、特許文献1参照)。
しかしながら、従来のように、故障の記録を、重要度で判定する場合、故障bの重要度が高い場合には、その前に発生していた故障aの記録を上書きをして、故障bのデータのみを記録するため、上記のように、正確な故障診断が困難になる場合がある。
故障検出手段が、制御対象の故障を検出すると、検出した故障内容に応じて記録すべきデータを選別し、前記選別したデータを記録手段に記録させる故障記録処理を行う故障記録制御手段を備え、
この故障記録制御手段は、前記故障記録処理にて、予め設定された設定時間内に複数の前記故障が検出された場合には、最初に検出された故障内容と、その故障に対応して選別したデータとを記録し、2回目以降に検出された前記故障については、故障内容のみを記録手段に記録することを特徴とする。
したがって、連鎖的に起きた複数の故障内容を把握し、かつ、それらの時系列上の前後関係を把握することができる。また、最初に発生した故障(A)に関しては、その故障に対応して選別したデータが記録されることにより、詳細な解析を行うことができながら、初回以外の故障についてはデータを記憶しないため、連鎖的に生じた複数の故障の全てについてデータを記録するものと比較して、必要な記録容量を低く抑えることができる。さらに、設定時間後に発生した非連鎖的な故障を記憶しないため、初回に発生した故障の解析に対して必要性の低い故障内容の記録を排除することで、必要な記録要量をいっそう低く抑えることができる。
(実施の形態1)
実施の形態1の故障記録装置を説明する。
まず、実施の形態1の故障記録装置を搭載した電動車両の制御系の構成を、図4に基づいて簡単に説明する。
実施の形態1の制動制御装置の制動力制御系は、統合コントローラ100と、ブレーキコントローラ101と、モータコントローラ103と、を備えている。
また、統合コントローラ100は、回生協調ブレーキ制御時等において、ドライバ要求制動トルクを得るようにブレーキコントローラ101とモータコントローラ103を統合して制御する。この統合コントローラ100には、バッテリコントローラ102からのバッテリ充電容量情報、センサ群110からの車速情報、ブレーキ操作情報、ブレーキ操作情報、マスタシリンダ液圧情報などが入力される。
なお、この実施の形態1の故障記録装置は、各コントローラ100~103のいずれか、例えば、統合コントローラ100に搭載されており、データ検出部1、故障判定部2、故障記録制御部3を備えている。
故障判定部2は、データ検出部1に入力されたデータに基づいて、このデータが予め設定された正常値の範囲内にあるか、それ以外の異常値であるかに基づいて故障を判定する。
起動判定部31は、実施の形態1の故障記録装置の全体の起動および終了を判定する。この起動判定部31は、電動車両を走行可能な起動状態とし故障記録装置を含む制御系である各コントローラ100~103を起動させた時に、故障判定部2および初回故障判定部32に対して起動フラグを出力し、走行終了により非起動状態とした時に、この起動フラグの出力を終了する。
ステップS1では、起動判定部31において、起動フラグが起動しているか否か、すなわち、故障記録装置が起動しているか否かを判定し、起動状態でステップS2に進み、非起動状態でステップS1の判定を繰り返す。
そして、ステップS5では、一定期間計測部34による一定期間ptの計測を開始した後、ステップS7に進む。
ステップS8では、起動フラグの起動が終了したか否か判定し、終了していない場合は、ステップS2に戻り、終了した場合は、ステップS9に進む。
ステップS9では、故障判定部2および初回故障判定部32を初期化して、ステップS1に戻る。
次に、実施の形態1の作用を図3のタイムチャートに基づいて説明する。
図では、t1の時点からt2の時点までの間の第1の走行時に故障A,B,Cが、発生し、t3の時点からt4の時点までの間の第2の走行時に故障D,E,Fが発生した場合の一例を示している。
初回故障判定部32は、この故障Aが、最初の故障であるため、初回故障フラグを、故障解析データ記録部33、一定期間計測部34、故障名称記録部35へ出力する。
故障解析データ記録部33は、初回故障フラグを受けて、各種データの中から、故障Aの解析に使用するために予め設定されたデータ項目(第1~第3データ項目)を選別し、かつ、これらデータ項目のデータについて、故障Aの発生前後のものを故障解析データ記録部33に記録する(ステップS4の処理に基づく)。この場合、図3に示す例では、故障Aに対するデータ項目として、第1データ項目、第2データ項目、第3データ項目の3種類のデータ項目が設定されている。したがって、故障解析データ記録部33は、これら第1~第3データ項目の各データd11~d15、d21~d25、d31~35を時系列で記録する。
一方、故障名称記録部35では、故障Bの故障内容(故障名称)の記録が成される(ステップS3→S6→S7の処理に基づく)。
よって、t2の時点で、走行を終了した場合、故障名称記録部35には、初回故障として故障Aおよびその後生じた故障Bが、時系列で記録されている。また、故障解析データ記録部33では、故障Aの発生時(t11)の前後のデータd11~d15、d21~d25、d31~d35が記録される。
a)実施の形態1の故障記録装置は、
制御対象の状態を示すデータを検出するデータ検出手段としてのデータ検出部1と、
データを記録する記録手段(故障解析データ記録部33、故障名称記録部35)と、
制御対象の故障を検出する故障検出手段としての故障判定部2と、
故障を検出すると、検出した故障内容に応じて記録すべきデータを選別し、選別したデータを記録手段に記録させる故障記録処理を行う故障記録制御手段としての故障記録制御部3と、
を備えた故障記録装置であって、
故障記録制御部3は、故障記録処理にて、一定期間(設定時間)pt内に複数の故障が検出された場合には、最初に検出された故障内容(故障A,D)と、その故障に対応して選別したデータ(d11~d15、d21~d25、d31~d35、d41~d45、d51~d55、d61~d65)とを記録し、2回目以降に検出された故障については、故障内容のみを記録するよう故障解析データ記録部33、故障名称記録部35における記録を制御することを特徴とする。
したがって、故障A,Dに対し、それぞれ連鎖的に起きた故障B,Eについては、故障名称記録部35に故障内容(故障名称)が記録されるため、その前後関係を把握でき、最後の故障のみを記録するものと比較して、故障解析を、より詳細に行うことができる。具体的には、従来の技術では、故障A~Fのうちで、重要度の高い故障のみについて故障内容およびデータが記録され、連鎖的に発生した故障A,BあるいはD,Eについて記録されない可能性があった。この場合、連鎖的に生じた故障A,B、D,Eについて故障解析が困難になる可能性がある。
それに対し、本実施の形態1では、連鎖的に生じた故障A,B、D,Eについて、その故障内容(故障名称)が時系列的に記録されるため、詳細な解析が可能となる。
加えて、連鎖的に生じた故障A,B、D,Eについて、最初に発生した故障A,Dに関しては、それぞれの故障A,Dについて、解析に必要なデータ項目(第1~第3)が選択される。しかも、各データ項目について、その故障発生前後のデータd11~d15、d21~d25、d31~d35およびデータd41~d45、d51~d55、d61~d65が時系列的に記録される。このため、連鎖的に発生する複数の故障として、最も、原因解析に必要な故障A,Dについて、詳細な故障解析が可能である。
さらに、最初の故障A,Dの後に連鎖的に生じた故障B,Eについては、故障内容のみを記録し、データの記録は行わないため、全ての故障についてデータを記録するものと比較して、必要な記録容量を低く抑えることができる。
しかも、最初の故障(A,D)発生から、一定期間ptの経過後の故障(C,F)については、連鎖的な故障ではないとして、故障内容(故障名称)について記録しないようにした。このように、最初に発生した故障(A,D)に対して非連鎖的に生じて、最初に発生した故障の解析に対し、必要性の低い故障内容の記録を排除することにより、必要な記録容量を、さらに抑えることができる。
データに基づいて、制御対象の故障を検出するステップ(S2)と、
故障を検出するステップ(S2)において故障が検出された場合に、最初に検出された故障については、故障内容と、データの内で、故障内容に応じて記録すべきデータを選別して、記録手段としての故障解析データ記録部33に記録させるステップ(S3、S4)と、
最初の故障の検出から予め設定された時間を計測し、この計測中に前記最初の故障の検出後に1または複数の他の故障が検出された場合、この他の故障については、故障内容のみを記録手段としての故障名称記録部35に記録するステップ(S5、S7、S3、S6)と、
を備えた故障記録方法を実行することを特徴とする。
したがって、上記a)と同様に、連鎖的に生じた故障A,B、D,Eについて、その故障内容(故障名称)が時系列的に記録されるため、詳細な解析が可能となる。
加えて、連鎖的に生じた故障A,B、D,Eについて、最初に発生した故障A,Dに関しては、解析に必要なデータ項目(第1~第3)について、その故障発生前後のデータd11~d15、d21~d25、d31~d35およびデータd41~d45、d51~d55、d61~d65を時系列的に記録する。このため、連鎖的に発生する複数の故障として、最も、原因解析に必要な故障A,Dについて、詳細な故障解析が可能である。
さらに、最初の故障A,Dの後に連鎖的に生じた故障B,Eについては、故障内容のみを記録するため、全ての故障についてデータを記録するものと比較して、必要な記録容量を低く抑えることができる。
しかも、一定期間ptの経過後の非連鎖的な故障(C,F)については、故障内容(故障名称)を記録しないため、必要な記録容量を、さらに抑えることができる。
故障記録制御部3は、故障記録処理におけるデータの記録は、装置の起動から終了までの間で、1回のみ行うことを特徴とする。
したがって、装置の起動から終了までの間、全ての故障を記録するものと比較して、装置の記録容量を低く抑えることができる。また、初回に発生した故障と関連性の低い故障まで記録して、解析作業が繁雑になるのを抑えることができる。
故障記録制御部3は、故障記録処理にてデータを記録するのにあたり、故障に応じて、取得するデータ項目を設定するデータ項目設定部としての故障解析データ記録部33を備えていることを特徴とする。
したがって、故障に応じ、その解析に必要なデータ項目のみを記録することで、解析に不要なデータまで記録することを防止し、必要な記録容量を低く抑えつつ、充分かつ詳細な解析を行うことを可能とする。
次に、他の実施の形態の故障記録装置について説明する。
なお、他の実施の形態は、実施の形態1の変形例であるため、実施の形態1と共通する構成には実施の形態1と同じ符号を付して説明を省略し、実施の形態1との相違点のみ説明する。
実施の形態2の故障記録装置は、故障解析データ記録部233における記録の仕方が実施の形態1と異なる。
実施の形態2では、図5に示す故障解析データ記録部233は、故障記録処理にてデータを記録するのにあたり、記録するデータ項目に応じて測定幅およびサンプリング周期を変更可能なサンプリング特性変更処理部233aを備えている。
例えば、図6Aは、故障Aが生じた場合のサンプリング特性変更処理部233aの動作を示している。この場合、故障解析データ記録部233は、第1~第3データ項目のデータを記録するのにあたり、測定幅およびサンプリング周期を各項目で共通にしている。
なお、故障Bの場合、第2データ項目に関しては、測定幅およびサンプリング周期は、図6A示す故障Aの場合と、ほぼ同一としている。
また、上述の測定幅およびサンプリング周期は、故障内容の違いにより、上記のように各データ項目における特性や、解析の仕方、あるいは解析に必要なデータの種類が異なるのに対応して行う。
故障記録制御部3は、故障記録処理にてデータを記録するのにあたり、記録するデータ項目に応じて測定幅とサンプリング周期との少なくとも一方を変更可能なサンプリング特性変更処理部233aを備えていることを特徴とする。
したがって、記録するデータ数を大きく増やすことなく、故障内容に応じて記録したデータ項目に基づいて、詳細な故障解析を行うことが可能となる。例えば、全てのデータ項目に対して、常時、測定幅を長くする、あるいは、サンプリング周期を短くすることにより、詳細な故障解析は可能である。しかし、その場合、データの記録容量を大きくする必要がある。それに対し、故障内容に応じて、データ項目の測定幅およびサンプリング周期を、故障内容に応じて最適に設定することにより、記録容量を大きくすることなく、故障内容に応じた詳細な解析が可能となる。
さらに、実施の形態2では、測定幅とサンプリング周期との両方を変更して設定可能としたため、いずれか一方のみの変更よりも、詳細な故障解析と、記録要量を抑えることの両立がより可能となる。
図7は実施の形態3の故障記録装置を示している。
この実施の形態3は、故障記録制御部3に、特定故障初回判定部310と、第2故障解析データ記録部320とを追加している。
他の処理は、実施の形態1と同様であるので、図示および説明を省略する。
f)実施の形態3の故障記録装置では、
故障記録制御部3は、予め設定された重要度の高い特定故障が発生した場合に、この故障が、装置の起動後の最初の前記特定故障の発生か否かを判定する特定故障初回判定部310と、特定故障初回判定部310が、初回と判定した場合に、その故障に対応して選別したデータを記録する第2故障解析データ記録部320と、
を備えていることを特徴とする。
したがって、実施の形態3では、重要度の高い特定故障が発生した場合には、特定故障以外の故障の発生の有無にかかわらず、また、この特定故障以外の故障の発生から一定期間が経過したか否かにかかわらず、解析に必要なデータ項目のデータが記録される。
よって、重要度の高い特定故障が発生した場合に、そのデータの記録が成されない不具合を回避し、重要度の高い特定故障の解析を確実に実行することができる。
実施の形態2では、サンプリング特性変更処理部は、測定幅とサンプリング周期との両方を変更して設定可能とした例を示したが、いずれか一方のみを変更するものでも、常にサンプリング特性が一定のものと比較して、記録するデータ数を抑えながら、データ項目の特性に対応した記録を行なうことが可能である。
Claims (6)
- 制御対象の状態を示すデータを検出するデータ検出手段と、
前記データを記録する記録手段と、
前記制御対象の故障を検出する故障検出手段と、
前記故障を検出すると、検出した故障内容に応じて記録すべきデータを選別し、前記選別したデータを前記記録手段に記録させる故障記録処理を行う故障記録制御手段と、
を備えた故障記録装置であって、
前記故障記録制御手段は、前記故障記録処理にて、予め設定された設定時間内に複数の前記故障が検出された場合には、最初に検出された故障内容と、その故障に対応して選別したデータとを記録し、2回目以降に検出された前記故障については、故障内容のみを記録するよう前記記録手段を制御することを特徴とする故障記録装置。 - 請求項1に記載の故障記録装置において、
前記故障記録制御手段は、前記故障記録処理における前記データの記録は、装置の起動から終了までの間で、1回のみ行うことを特徴とする故障記録装置。 - 請求項1または請求項2に記載の故障記録装置において、
前記故障記録制御手段は、前記故障記録処理にて前記データを記録するのにあたり、記録するデータ項目に応じ、少なくとも、その測定幅とサンプリング周期との一方を変更可能なサンプリング特性変更処理部を備えていることを特徴とする故障記録装置。 - 請求項1~請求項3のいずれか1項に記載の故障記録装置において、
前記故障記録制御手段は、前記故障記録処理にて前記データを記録するのにあたり、前記故障に応じて、取得するデータ項目を設定するデータ項目設定部を備えていることを特徴とする故障記録装置。 - 請求項1~請求項4のいずれか1項に記載の故障記録装置において、
前記故障記録制御手段は、予め設定された重要度の高い特定故障が発生した場合に、この故障が、装置の起動後の最初の前記特定故障の発生か否かを判定する特定故障初回判定と、前記特定故障初回判定部が、初回と判定した場合に、その故障に対応して選別したデータを記録する第2故障解析データ記録部と、を備えていることを特徴とする故障記録装置。 - 制御対象の状態を検出するデータ検出手段からのデータに基づいて、前記制御対象の故障を検出し、前記データを記録手段に記録する故障記録制御方法であって、
前記データに基づいて、前記制御対象の故障を検出するステップと、
前記故障を検出するステップにおいて前記故障が検出された場合に、最初に検出された前記故障については、故障内容と、前記データの内で、前記故障内容に応じて記録すべきデータを選別して、前記記録手段に記録させるステップと、
前記最初の故障の検出から予め設定された時間を計測し、この計測中に前記最初の故障検出後に1または複数の他の故障が検出された場合、この他の故障については、前記故障内容のみを前記記録手段に記録するステップと、
を備えていることを特徴とする故障記録方法。
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