Anomaly detection device and program

Abstract

To provide an abnormality detection device and program that can prevent erroneous determination of abnormality.SOLUTION: An abnormality detection device 30 comprises a booster circuit 31, internal power supplies 41, 42, components using boosted power supply, and a control unit 50. The booster circuit 31 boosts electric power from an auxiliary battery 7. The internal power supplies 41, 42 supply electric power boosted by the booster circuit 31. The components using boosted power supply operate using the electric power supplied from the internal power supplies 41, 42. The control unit 50 includes a drive signal generation unit 51 and an abnormality determination unit 55. The drive signal generation unit 51 generates a booster circuit drive signal for driving the booster circuit 31. The abnormality determination unit 55 determines an abnormality related to the components using boosted power supply. The abnormality determination unit 55 performs control to disable the abnormality determination related to the components using boosted power supply when the driving of the booster circuit 31 is stopped by turning off the booster circuit drive signal.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an abnormality detection device and a program. [Background technology]

[0002] Conventionally, there is known anomaly detection device that detects anomalies in resolvers, etc. For example, in Patent Document 1, an anomaly inside a resolver or in wiring is detected based on the sum of squares of a sine signal and a cosine signal obtained from the resolver. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-72758 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, in a device that requires a boost power supply to operate a resolver or the like, if an abnormality determination is performed while the boost circuit is stopped, there is a risk that the resolver signal will be erroneously determined to be abnormal even though the resolver itself is normal. The same applies to devices other than resolvers that use a boost power supply.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide an abnormality detection device and a program capable of preventing erroneous abnormality determination. [Means for solving the problem]

[0006] The abnormality detection device of the present invention includes a boost circuit (31), an internal power supply (41, 42), a component using the boosted power supply (15, 45, 47), and a control unit (50). The boost circuit boosts the power from a battery (7). The internal power supply supplies the power boosted by the boost circuit. The component using the boosted power supply operates using the power supplied from the internal power supply.

[0007] The control unit has a drive signal generating unit (51) that generates a boost circuit drive signal for driving the boost circuit, and an abnormality determining unit (55) that determines an abnormality related to a component using a boost power supply. When the operation of the boost circuit is stopped by turning off the boost circuit drive signal, the abnormality determining unit controls to disable abnormality determination related to the component using a boost power supply. This makes it possible to avoid erroneous determination of an abnormality in the component using a boost power supply.

[0008] The present invention is also provided as a program for operating an abnormality determination unit in the abnormality detection device, thereby achieving the same effects as those of the abnormality determination device. [Brief description of the drawings]

[0009] [Figure 1] 1 is a block diagram showing a configuration of a vehicle drive system according to an embodiment; [Diagram 2] FIG. 2 is a block diagram showing a configuration of a control unit according to one embodiment. [Diagram 3] 10 is a flowchart illustrating an abnormality monitoring execution determination process according to an embodiment. [Figure 4] 4 is a time chart illustrating an abnormality monitoring execution determination process according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (One embodiment) An abnormality detection device according to the present invention will now be described with reference to the drawings. One embodiment is shown in Figures 1 to 4. As shown in Figure 1, a vehicle drive system 1 includes a main battery 5, an auxiliary battery 7, a main motor 10, a power control unit 20, and the like.

[0011] The main battery 5 is a DC power supply constituted by a chargeable and dischargeable secondary battery such as a nickel-metal hydride or lithium ion battery. The power of the main battery 5 is supplied to the main motor 10 mainly via a bridge circuit 22 and is used to drive the main motor 10. The main battery 5 is charged with power generated by regeneration of the main motor 10. The main battery 5 can also be charged by an external power source (not shown). The auxiliary battery 7 is a secondary battery such as a lead storage battery, and supplies power to the control unit 30 and auxiliary devices (not shown).

[0012] The main motor 10 is a permanent magnet type synchronous three-phase AC rotating electric machine, a so-called "motor generator" that functions both as an electric motor and as a generator. The main motor 10 is used as a drive source for a vehicle. The vehicle may be an EV vehicle that runs on the driving force of the main motor 10, or a hybrid vehicle that runs on the driving force of the main motor 10 and an engine (not shown). The main motor 10 is provided with a resolver 15, which is a rotation angle sensor that detects a rotation angle.

[0013] 1 and 2, the power control unit 20 has an inverter 21, a control unit 30, etc. The inverter 21 has a bridge circuit 22 and a temperature sensor 25. The bridge circuit 22 has inverter elements such as IGBTs connected in a bridge configuration, converts DC power supplied from the main battery 5 into three-phase AC power, and outputs it to the main motor 10. The temperature sensor 25 detects the temperature of the inverter elements that make up the bridge circuit 22. In the drawings, the power control unit is referred to as "PCU" and the control unit is referred to as "ECU."

[0014] 2, the control unit 30 includes a boost circuit 31, a first internal power supply 41, a second internal power supply 42, a resolver excitation circuit 45, a gate driving IC 47, a control unit 50, and the like, and operates with power from the auxiliary battery 7. The boost circuit 31 has a boost element such as an IGBT, and boosts the voltage (e.g., 12 V) of the auxiliary battery 7 by switching the boost element, thereby generating boosted voltages for the first internal power supply 41 and the second internal power supply 42. In this embodiment, the first internal power supply 41 is, for example, a 30 V power supply, and the second internal power supply is, for example, a 17 V power supply, but the number of internal power supplies and the boosted voltage may be different.

[0015] The resolver excitation circuit 45 generates a resolver excitation signal using power supplied from the first internal power source 41. The generated resolver excitation signal is output to the resolver 15. The resolver 15 uses the resolver excitation signal to output a sine signal and a cosine signal, which are angle signals corresponding to the rotational position of the main motor 10, to the control unit 50. In addition, an RDC (resolver digital converter) 16 performs angle calculation based on the sine signal and the cosine signal output from the resolver 15, and outputs an angle calculation signal as a digital signal to the control unit 50. Hereinafter, the sine signal and the cosine signal output from the resolver 15 are referred to as resolver signals, and the signal from the RDC 16 is referred to as an RDC signal, as appropriate.

[0016] The gate driving IC 47 is supplied with power from the second internal power supply 42 and outputs a gate signal to the inverter 21. The gate driving IC 47 also acquires the detection value of the temperature sensor 25, the detection value of a current sensor (not shown), etc. as inverter element information. The gate driving IC 47 outputs to the control unit 50 a temperature detection signal which is a pulse signal whose duty is changed according to the inverter element temperature.

[0017] The control unit 50 is mainly composed of a microcomputer and includes a CPU, ROM, RAM, I / O, and bus lines connecting these components (all not shown). Each process in the control unit 50 may be software processing in which the CPU executes a program stored in advance in a substantial memory device (i.e., a readable non-transitory tangible recording medium) such as a ROM, or may be hardware processing by a dedicated electronic circuit. The control unit 50 is supplied with power from the auxiliary battery 7 via a regulator (not shown) without passing through the boost circuit 31.

[0018] The control unit 50 has, as functional blocks, a drive signal generation unit 51, an angle calculation unit 52, a temperature calculation unit 53, and an abnormality determination unit 55. The drive signal generation unit 51 generates a boost circuit drive signal related to driving the boost circuit 31, and outputs the boost circuit 31.

[0019] The angle calculation unit 52 obtains AD converted values ​​of the sine signal and cosine signal output from the resolver 15, and calculates information related to the rotational position of the main motor 10 by atan calculation or the like. The information related to the rotational position of the main motor 10 includes the rotation speed, resolver angle, and electrical angle.

[0020] The temperature calculation unit 53 acquires a temperature detection signal relating to the inverter element temperature from the gate driving IC 47, and calculates the inverter element temperature based on the duty of the acquired temperature detection signal.

[0021] The abnormality determination unit 55 monitors abnormalities in the resolver 15, the inverter element, the first internal power supply 41, etc. Specifically, the abnormality determination unit 55 monitors the sum of squares of the sine signal and the cosine signal output from the resolver 15, and determines that the resolver 15 is abnormal when the sum of squares of the sine signal and the cosine signal falls outside a predetermined range. Note that resolver abnormalities include not only abnormalities in the resolver 15 itself, but also abnormalities in the wiring from the resolver 15 to the control unit 50. The same applies to other abnormalities.

[0022] The abnormality determination unit 55 compares the angle information based on the resolver signal acquired from the resolver 15 with the angle information acquired from the RDC 16, and determines that an angle calculation abnormality has occurred if the difference is outside the coincidence determination range. The abnormality determination unit 55 also receives an excitation period signal, which is a pulse signal output for each period of the excitation signal, from the resolver excitation circuit 45 and monitors the excitation signal period. If the abnormality determination unit 55 cannot acquire the excitation period signal from the resolver excitation circuit 45 or if the signal period is outside the normal range, it determines that the resolver excitation signal is abnormal.

[0023] The abnormality determination unit 55 monitors the temperature detection signal output from the gate drive circuit 47. When the abnormality determination unit 55 cannot obtain the temperature detection signal or when the inverter element temperature is outside the normal range, it determines that the temperature detection is abnormal. In addition, the abnormality determination unit 55 obtains a voltage obtained by converting the power supply voltage of the first internal power supply 41, which is the power supply of the resolver excitation circuit 45, into a predetermined range (for example, 0 [V] to 5 [V]), and monitors whether the first internal power supply 41 is within the normal operating range. When the voltage of the first internal power supply 41 is outside the normal operating range, the abnormality determination unit 55 determines that the power supply voltage of the resolver excitation circuit 45 is abnormal. Note that, in order to avoid complication, some control lines are omitted from FIG. 2.

[0024] The resolver excitation circuit 45 and the gate drive IC 47 require a voltage higher than that of the auxiliary battery 7, and are configured to receive power via internal power sources 41, 42 generated using the boost circuit 31.

[0025] In the boost circuit 31, noise is generated because the boost element is switched when generating the boosted voltage. In addition, with the electrification of vehicles, EMC (Electromagnetic Compatibility) requirements tend to become stricter, and for example, if the boost circuit 31 is driven when charging the main battery 5 from an external power source, there is a possibility that the EMC requirements will not be satisfied due to switching noise.

[0026] For this reason, in this embodiment, when the main battery 5 is being charged, the operation of the boost circuit 31 that boosts the voltage of the auxiliary battery 7 is stopped. When the operation of the boost circuit 31 is stopped, the operation of the resolver excitation circuit 45 and the like that are operated by power supplied from the internal power sources 41, 42 is also stopped. Hereinafter, the components that are operated by power supplied from the internal power sources 41, 42 are collectively referred to as "components using boost power supply."

[0027] On the other hand, since power is supplied to the control unit 50 from the auxiliary battery 7 without passing through the boost circuit 31, the control unit 50 continues to operate even when the boost circuit 31 is stopped. If the abnormality determination unit 55 continues to monitor the resolver 15 and other components that are operated by power supplied from the internal power sources 41 and 42, there is a risk that the resolver 15 itself may be erroneously determined to be abnormal even though it is normal.

[0028] Therefore, in this embodiment, when the boost circuit 31 is normally stopped by command from the control unit 50, such as when the main battery 5 is being charged, abnormality monitoring of components that use the internal power sources 41, 42 is disabled.

[0029] The abnormality monitoring execution determination process of this embodiment will be described with reference to the flowchart of Fig. 3. This process is executed at a predetermined cycle by the control unit 50. Hereinafter, the "step" such as step S101 will be omitted and simply denoted by the symbol "S".

[0030] In S101, the control unit 50 acquires charging information related to the charging state of the main battery 5 from the vehicle system. In S102, the control unit 50 determines whether the main battery 5 is being charged by an external power source. If it is determined that the main battery 5 is being charged (S102: YES), the process proceeds to S103. Note that here, charging is not by regeneration, and the main motor 10 is in a stopped state. If it is determined that the main battery 5 is not being charged (S102: NO), the process proceeds to S105.

[0031] In S103, the drive signal generating unit 51 turns off the boost circuit drive signal and stops the boost circuit 31. In S104, the abnormality determining unit 55 disables the abnormality determination related to the boost power supply using parts. Specifically, the abnormality determining unit 55 disables the abnormality determination of the resolver signal based on the square sum of the sine signal and the cosine signal acquired from the resolver 15, the abnormality determination of the resolver excitation circuit based on the excitation period signal acquired from the resolver excitation circuit 45, the abnormality determination of the angle calculation by comparing the angle calculation value based on the resolver signal with the angle calculation value based on the RDC signal, the abnormality determination of the inverter element temperature based on the temperature detection signal acquired from the gate drive IC 47, and the abnormality determination of the internal power supply voltage. Also, when the boost drive signal is off and the abnormality monitoring related to the boost power supply using parts is disabled, the state is maintained.

[0032] If it is determined that the main battery 5 is not being charged (S102: NO), the control unit 50 goes to S105, where it determines whether the boost circuit 31 is in operation. If it is determined that the boost circuit 31 is in operation (S105: YES), the process from S106 onwards is skipped, and the operation of the boost circuit 31 continues. If it is determined that the boost circuit 31 is stopped (S105: NO), the process goes to S106. In S106, the drive signal generation unit 51 turns on the boost circuit drive signal, and starts driving the boost circuit 31.

[0033] In S107, the abnormality determination unit 55 judges whether or not the abnormality monitoring recovery condition is satisfied. Here, it is judged that the abnormality monitoring recovery condition is satisfied when the waiting time Xw has elapsed since the start of driving the boost circuit 31. The waiting time Xw is set according to the time required for the voltages of the internal power supplies 41 and 42 to stabilize after the start of driving the boost circuit 31.

[0034] It may also be determined that the abnormality monitoring recovery condition is satisfied by receiving a notification that a function that is activated after the boost circuit 31 is driven has been activated. For example, it may be determined that the abnormality monitoring recovery condition is satisfied when the voltage of the first internal power supply 41 falls within a normal range as a function that is activated after the boost circuit 31 is driven. Furthermore, it may also be determined that the abnormality monitoring recovery condition is satisfied when the pulse signal acquired from the resolver excitation circuit 45 has a normal amplitude and period.

[0035] If it is determined that the abnormality monitoring recovery condition is not satisfied (S107: NO), this determination process is repeated. If it is determined that the abnormality monitoring recovery condition is satisfied (S107: YES), the process proceeds to S108, where abnormality monitoring for the boost power supply-using component is performed.

[0036] The abnormality monitoring execution determination process according to this embodiment will be described with reference to the time chart of Fig. 4. In Fig. 4, the horizontal axis represents a common time axis, and from the top, the charging execution state of the main battery 5, the driving state of the boost circuit 31, the execution state of resolver abnormality monitoring, the state of the resolver 15, the resolver signal, and the sum of squares of the resolver signal are shown. Note that Fig. 4 shows abnormality monitoring based on the sum of squares of the resolver signal as an example of abnormality monitoring related to a component using a boost power supply.

[0037] Before time x10, the main battery 5 is not being charged, and the boost circuit 31 is operating normally. In addition, the resolver 15 is normal, and the sum of squares of the resolver signal is the predetermined value A. Therefore, the abnormality determination unit 55 determines that the resolver 15 is normal.

[0038] At time x10, when charging of the main battery 5 starts, the drive signal generating unit 51 turns off the boost circuit drive signal and stops driving the boost circuit 31. When the drive of the boost circuit 31 stops, the resolver excitation circuit 45 cannot generate an excitation signal, so the resolver signal is fixed at a predetermined value (0 in the example of FIG. 4) and the sum of the squares of the resolver signal also becomes 0, which is a value different from the predetermined value A. Therefore, if abnormality monitoring is continued after time x10, the abnormality determining unit 55 will erroneously determine that the resolver 15 is abnormal.

[0039] Therefore, in this embodiment, abnormality monitoring of the resolver signal is disabled while the main battery 5 is being charged. This makes it possible to avoid erroneously determining that the resolver 15 is abnormal when the resolver 15 is actually normal. Note that abnormality monitoring of components other than those using a boost power supply may continue even while the main battery 5 is being charged.

[0040] When charging of the main battery 5 is completed at time x11, the drive signal generating unit 51 turns on the boost circuit drive signal at time x12, and the drive of the boost circuit 31 is started. When the drive of the boost circuit 31 is started, the first internal power supply 41 rises up, and an excitation signal is generated from the resolver excitation circuit 45. There is a delay from the start of drive of the boost circuit 31 until the excitation signal returns to normal. In this embodiment, taking into consideration the delay from the start of drive of the boost circuit 31, the boost circuit drive signal is turned on, and at time x13 when the waiting time Xw has elapsed, abnormality monitoring based on the sum of squares of the resolver signal in the abnormality determining unit 55 is started. This makes it possible to avoid erroneously determining that the delay from the start of drive of the boost circuit 31 until the resolver signal becomes stable is an abnormality of the resolver 15.

[0041] As described above, the control unit 30 includes the boost circuit 31, the internal power sources 41 and 42, components using boosted power, and the control unit 50. The boost circuit 31 boosts the power from the auxiliary battery 7. The internal power sources 41 and 42 supply the power boosted by the boost circuit 31. The components using boosted power operate using the power supplied from the internal power sources 41 and 42.

[0042] The control unit 50 has a drive signal generation unit 51 and an abnormality determination unit 55. The drive signal generation unit 51 generates a boost circuit drive signal that drives the boost circuit 31. The abnormality determination unit 55 determines an abnormality related to the components using boosted power supply. When the drive of the boost circuit 31 is stopped normally by turning off the boost circuit drive signal, the abnormality determination unit 55 controls to disable abnormality determination related to the components using boosted power supply. This makes it possible to avoid erroneously determining that a state in which a signal related to abnormality determination of the components using boosted power supply differs from normal due to the stop of the boost circuit 31 is an abnormality of the components using boosted power supply.

[0043] When the boost circuit drive signal is turned on from off and the boost circuit 31 starts to drive, the abnormality determination unit 55 starts abnormality determination for the components using the boosted power supply after the recovery condition is satisfied. This makes it possible to avoid erroneously determining that the delay between the start-up of the boost circuit 31 and the normal operation of the components using the boosted power supply is an abnormality.

[0044] The component using the boost power supply is the resolver 15 that detects the rotational position of the main motor 10, and the abnormality determination unit 55 invalidates the abnormality determination of the signal acquired from the resolver 15 when the drive of the boost circuit 31 is stopped. In detail, the abnormality determination based on the sum of squares of the sine signal and the cosine signal acquired from the resolver 15 is invalidated. This makes it possible to avoid erroneously determining that a state in which the resolver signal is a different value from the normal state due to the boost circuit 31 being stopped is an abnormality of the resolver 15.

[0045] Furthermore, when the operation of the boost circuit is stopped, the abnormality determination unit 55 disables the abnormality determination of the voltage supplied to the resolver excitation circuit 45 (the voltage of the first internal power supply 41 in this embodiment). This makes it possible to prevent erroneous determination of an abnormality in the resolver excitation circuit power supply.

[0046] The boost power supply using component is the resolver excitation circuit 45 that outputs an excitation signal to the resolver 15 that detects the rotational position of the main motor 10, and the abnormality determination unit 55 disables the abnormality determination of the excitation periodic signal that is periodically output from the resolver excitation circuit when the drive of the boost circuit 31 is stopped. This makes it possible to prevent erroneous determination of an abnormality in the resolver excitation circuit 45.

[0047] The boost power supply using component is a gate drive IC 47 that outputs a gate signal to the inverter element that constitutes the inverter 21, and the abnormality determination unit 55 invalidates the abnormality determination of the signal related to the inverter element information output from the gate drive IC 47 when driving of the boost circuit 31 is stopped. The inverter element information is, for example, the temperature of the inverter element, etc. This makes it possible to avoid erroneous determination of an abnormality in the inverter element information.

[0048] Furthermore, when the drive of the boost circuit 31 is stopped, the abnormality determination unit 55 disables the abnormality determination based on the comparison between the angle calculation value based on the signal obtained from the resolver 15 and the angle calculation value obtained via the resolver digital converter 16. This makes it possible to avoid erroneous determination of an abnormality in the angle calculation.

[0049] Furthermore, the program of the abnormality detection device that detects abnormalities related to components that use a boost power supply operates the abnormality determination unit 55 that controls to disable abnormality determination related to components using the boost circuit when the boost circuit 31 is stopped by turning off the boost drive circuit signal. Such a program also has the same effect.

[0050] In the embodiment, the control unit 30 corresponds to the "abnormality detection device", the auxiliary battery 7 corresponds to the "battery", the main motor 10 corresponds to the "motor", and the gate drive IC 47 corresponds to the "gate drive circuit".

[0051] (Other embodiments) In the above embodiment, when the boost circuit is stopped while the main battery is being charged, the following are invalidated: abnormality determination of the resolver signal based on the sum of squares of the sine signal and cosine signal from the resolver, abnormality determination of the resolver excitation circuit, abnormality determination of the angle calculation, abnormality determination of the inverter element temperature, and abnormality determination of the internal power supply voltage. In other embodiments, some of the abnormality determinations that are invalidated when the boost circuit is stopped may be omitted, or other abnormality determinations related to components that use the boost power supply may be invalidated.

[0052] In the above embodiment, the boosted power supply components are the resolver, the resolver excitation circuit, and the gate drive circuit. In other embodiments, the boosted power supply components may be components other than the resolver, the resolver excitation circuit, and the gate drive circuit that operate with power boosted by the boost circuit. Also, when the boost circuit is stopped, abnormality monitoring based on a signal other than the sum of squares of the sine signal and the cosine signal from the resolver, the resolver excitation circuit power supply voltage, and the pulse signal from the resolver excitation circuit or the gate drive circuit may be stopped.

[0053] In the above embodiment, when the boost circuit is stopped while the main battery is being charged, the abnormality determination for the components using the boost power source is invalidated. In another embodiment, when the power supply to the control unit is continued except when the main battery is being charged, and the boost circuit is normally stopped by a command from the control unit, the abnormality determination for the components using the boost power source may be invalidated.

[0054] In the above embodiment, the control unit acquires information related to the motor rotational position via the resolver and the RDC. In other embodiments, the RDC may be omitted. Also, the configuration of the control unit may be different from that of the above embodiment, for example, a rotation angle sensor other than the resolver may be used.

[0055] The control unit and the method described in the present disclosure may be realized by a dedicated computer provided by configuring a processor and a memory programmed to execute one or more functions embodied in a computer program. Alternatively, the control unit and the method described in the present disclosure may be realized by a dedicated computer provided by configuring a processor with one or more dedicated hardware logic circuits. Alternatively, the control unit and the method described in the present disclosure may be realized by one or more dedicated computers configured by a combination of a processor and a memory programmed to execute one or more functions and a processor configured with one or more hardware logic circuits. In addition, the computer program may be stored in a computer-readable non-transient tangible recording medium as instructions executed by a computer. As described above, the present invention is not limited to the above embodiment, and can be implemented in various forms within the scope of the invention. [Explanation of symbols]

[0056] 7. Auxiliary battery (battery) 10 Main motor (motor) 15...Resolver (component using boost power supply) 30 Control unit (abnormality detection device) 31: Boost circuit 41, 42: Internal power supply 45...Resolver excitation circuit (component using boost power supply) 47 Gate drive IC (step-up power supply components, gate drive circuit) 50...Control section 51: Drive signal generating unit 55: Abnormality determining unit

Claims

1. A boost circuit (31) for boosting the power from the battery (7); an internal power supply (41, 42) for supplying power boosted by the boost circuit; A boosted power supply component (15, 45, 47) that operates using power supplied from the internal power supply; a control unit (50) having a drive signal generating unit (51) for generating a boost circuit drive signal for driving the boost circuit, and an abnormality determining unit (55) for determining an abnormality related to a component using a boost power supply; Equipped with The abnormality detection device, wherein the abnormality determination unit performs control so as to disable abnormality determination related to the component using the boost power supply when the boost circuit drive signal is turned off to stop driving the boost circuit.

2. 2. The abnormality detection device according to claim 1, wherein the abnormality determination unit starts abnormality determination for the component using the boost power supply after a recovery condition is satisfied when the boost circuit drive signal is turned on from off to start driving the boost circuit.

3. The boost power supply-using component is a resolver (15) that detects the rotational position of a motor (10), 3. The abnormality detection device according to claim 1, wherein the abnormality determination unit disables abnormality determination of the signal acquired from the resolver when driving of the boost circuit is stopped.

4. The boost power supply component is a resolver excitation circuit (45) that outputs an excitation signal to a resolver (15) that detects the rotational position of a motor (10), 4. The abnormality detection device according to claim 1, wherein the abnormality determination unit disables abnormality determination of the voltage supplied to the resolver excitation circuit when driving of the boost circuit is stopped.

5. The boost power supply component is a resolver excitation circuit (45) that outputs an excitation signal to a resolver (15) that detects the rotational position of a motor (10), The abnormality detection device according to any one of claims 1 to 4, wherein the abnormality determination unit disables abnormality determination of the excitation periodic signal periodically output from the resolver excitation circuit when driving of the boost circuit is stopped.

6. The boost power supply component is a gate drive circuit (47) that outputs a gate signal to an inverter element constituting an inverter (21) that converts the power of a motor (10), The abnormality detection device according to any one of claims 1 to 5, wherein the abnormality determination unit disables abnormality determination of a signal related to inverter element information output from the gate drive circuit when driving of the boost circuit is stopped.

7. The boost power supply-using component is a resolver (15) that detects the rotational position of a motor (10), The abnormality detection device according to any one of claims 1 to 6, wherein the abnormality determination unit invalidates abnormality determination based on a comparison between an angle calculation value based on a signal obtained from the resolver and an angle calculation value obtained via a resolver digital converter (16) when driving of the boost circuit is stopped.

8. A program for an abnormality detection device (30) that detects an abnormality related to a component that uses a boost power supply, The abnormality detection device includes: A boost circuit (31) for boosting the power from the battery (7); an internal power supply (41, 42) for supplying power boosted by the boost circuit; A boosted power supply component (15, 45, 47) that operates using power supplied from the internal power supply; a control unit (50) having a drive signal generating unit (51) for generating a boost circuit drive signal for driving the boost circuit, and an abnormality determining unit (55) for determining an abnormality related to a component using a boost power supply; Equipped with a program for operating the abnormality determination unit to perform control so as to disable abnormality determination relating to the component using the boost power supply when the boost circuit is stopped by turning off the boost circuit drive signal;

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