CN105991081A - A control device, a control method and a program - Google Patents
A control device, a control method and a program Download PDFInfo
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- CN105991081A CN105991081A CN201610101750.7A CN201610101750A CN105991081A CN 105991081 A CN105991081 A CN 105991081A CN 201610101750 A CN201610101750 A CN 201610101750A CN 105991081 A CN105991081 A CN 105991081A
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- Prior art keywords
- voltage
- change
- motor
- meansigma methods
- phase
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
- H02H7/0844—Fail safe control, e.g. by comparing control signal and controlled current, isolating motor on commutation error
Abstract
A control device, a control method and a program are provided. The control device in an air conditioning system of an inverter drive motor can detect abnormal actions when at least one of one or more A/D conversion circuits acts abnormally and can safely stop the air conditioning system. The control device is provided with one or more A/D conversion parts and a determining part. The A/D conversion parts convert a voltage detected by a voltage detection unit from analogue values into digital values in a circuit of a target device. The determining part calculates the average value of the digital values after conversion by the A/D conversion parts, and determines that the A/D conversion parts acts abnormally when a difference between the calculated average value and a reference value of an average value pre-determined by a voltage in a certain period.
Description
Technical field
The present invention relates to a kind of control device, control method and program.
Background technology
In the system of Driven by inverter motor, generate the switch unit constituting the inverter driving motor
The control signal that part is controlled.Such as, there is air conditioner (hereinafter referred to as air conditioner)
Air conditioning system in, generate the switch unit to the inverter constituting the compressor motor driven in compressor
The control signal that part is controlled.Generally, inverter is in order to become to carry out being suitable for system by motor control
The action of state and the various voltages (analogue value) in detecting system.In addition, it is desirable to according to detecting
Voltage generate the control signal that is controlled of switch element constituting inverter.Now, sometimes make
With the A/D change-over circuit that will be converted to digital value as the voltage of the analogue value.
In patent documentation 1, record the technology of fault in the range of detecting as follows as correlation technique,
That is, input as the voltage of the analogue value of voltage source and is converted into the A/D change-over circuit of digital signal
Output voltage values, although the state between overcharge condition and over-discharge state i.e. normal voltage range
In, but become fault in the range of the digital value different from the actual analog voltage of voltage source.
Patent documentation 1: Japanese Unexamined Patent Publication 2013-234851 publication
But, in the air conditioning system of Driven by inverter motor, each by system of A/D change-over circuit
Plant voltage (analogue value) and be converted to digital value.And, the switch element constituting inverter is controlled
The control signal of system is determined according to the digital value after being changed by A/D change-over circuit, thus
Motor is made suitably to carry out action.In this air conditioning system, produce abnormal in A/D change-over circuit
In the case of, A/D change-over circuit is by the various voltages (simulation different from the actual value in air conditioning system
Value) be converted to digital value.Therefore, the control signal switch element constituting inverter being controlled
It is likely to become unfavorable control signal.It is as a result, it is possible to make inverter drive horse unfavourably
Reach, and system becomes abnormality.
Summary of the invention
Then, it is an object of the invention to provide and a kind of can solve the problem that the control device of the problems referred to above, control
Method processed and program.
The 1st mode according to the present invention, controls device and possesses: one or more A/D converter sections,
The voltage detected by voltage detection department in the circuit of object apparatus is converted to digital value from the analogue value；And
Detection unit, calculates the meansigma methods of the described digital value after being changed by described A/D converter section, is calculating
The reference value of the meansigma methods gone out and the predetermined meansigma methods of described voltage based on certain period it
Between difference in the case of prescribed limit is outer, it is determined that described A/D converter section is not operating normally.
The 2nd mode according to the present invention, above-mentioned control device possesses control portion, and this control portion is described
In the case of detection unit is judged to that at least one of described A/D converter section is not operating normally, control to carry
There is the equipment stopping action of this device.
The 3rd mode according to the present invention, in above-mentioned control device, described voltage detection department detects
Based on the voltage of the three-phase alternating current of circulation in motor, described A/D converter section is to based on described three
The voltage of cross streams electric current is changed.
The 4th mode according to the present invention, in control method, one or more A/D converter sections are right
As the voltage that voltage detection department detects being converted to digital value from the analogue value in the circuit of device, it is determined that
Portion calculates the meansigma methods of the described digital value after being changed by described A/D converter section, flat calculate
Difference between the reference value of the predetermined meansigma methods of average and described voltage based on certain period
It is worth in the case of prescribed limit is outer, it is determined that be not operating normally for described A/D converter section.
The 5th mode according to the present invention, program make computer as following mechanism function: one
Individual or multiple A/D shifters, the voltage in the circuit of object apparatus, voltage detection department detected
Digital value is converted to from the analogue value；And decision mechanism, calculate and changed by described A/D shifter
After the meansigma methods of described digital value, at the meansigma methods calculated and described voltage based on certain period
Predetermined meansigma methods reference value between difference in the case of prescribed limit is outer, it is determined that for
Described A/D shifter is not operating normally.
Control device according to the embodiment of the present invention, in the air conditioning system of Driven by inverter motor
In, when in one or more A/D change-over circuits, at least one is not operating normally i.e. abnormal, it is possible to inspection
Survey it abnormal, and air conditioning system can be stopped safely.
Accompanying drawing explanation
Fig. 1 be represent according to the first embodiment of the invention be used in possess control device air-conditioning
First figure of the structure of the off-premises station in system.
Fig. 2 is to represent the control signal controlling inverter according to the first embodiment of the invention
Figure.
Fig. 3 is the voltage representing voltage detection department detection according to the first embodiment of the invention
Figure.
Fig. 4 is to represent the motor that drive waveforms generating unit according to the first embodiment of the invention has
The figure of desired value of output voltage.
Fig. 5 is to represent that off-premises station according to the first embodiment of the invention generates the exchange driving motor
The figure of the handling process of voltage.
Fig. 6 is to represent off-premises station detection A/D change-over circuit according to the first embodiment of the invention
The figure of abnormal handling process.
Fig. 7 be represent according to the first embodiment of the invention be used in possess control device air-conditioning
Second figure of the structure of the off-premises station in system.
Fig. 8 be represent second embodiment of the invention be used in possess control device air-conditioning
First figure of the structure of the off-premises station in system.
Fig. 9 is to represent off-premises station detection A/D change-over circuit second embodiment of the invention
The figure of abnormal handling process.
Figure 10 is the voltage representing voltage detection department detection second embodiment of the invention
Figure.
Figure 11 be represent second embodiment of the invention be used in possess control device sky
Second figure of the structure of the off-premises station in adjusting system.
Figure 12 be represent according to third embodiment of the present invention be used in possess control device sky
First figure of the structure of the off-premises station in adjusting system.
Figure 13 be represent according to third embodiment of the present invention be used in possess control device sky
Second figure of the structure of the off-premises station in adjusting system.
Symbol description
1-off-premises station, 10-alternating current power supply, 20-AC-DC changer, 30-inverter, 40-motor,
50-controls device, 201-reactor, 202-commutation diode storehouse, 203-capacitor, 301,302,
303,304,305,306-switch element, 501,508-test section, 502-voltage detection department, 503,
504-A/D change-over circuit, 505-drives signal generator, 506-transistor circuit, and 507-A/D changes
Detection unit, 509-sensor, 510,511-multiplexer, 512-sensor voltage converter section.
Detailed description of the invention
＜ the first embodiment ＞
Hereinafter, with reference to accompanying drawing, embodiment is described in detail.
First, being used according to the first embodiment of the invention is possessed control the air-conditioning system of device
The structure of the off-premises station in system illustrates.
As it is shown in figure 1, possess alternating current power supply according to the off-premises station 1 (object apparatus) of present embodiment
10, AC (Alternative Current)-DC (Direct Current) changer 20, inverter 30,
Motor 40 and control device 50.
Alternating current power supply 10 generates alternating voltage, and exports AC-DC converter 20.
AC-DC converter 20 possesses reactor 201, commutation diode storehouse 202 and capacitor 203.
The commutation diode storehouse 202 that AC-DC converter 20 is possessed is to defeated from alternating current power supply 10
The alternating voltage entered carries out rectification.
Reactor 201 and capacitor 203 constitute the smoothing filter of the harmonic wave of suppression alternating current power supply 10,
And reduce the pulsation being carried out the voltage after rectification by commutation diode storehouse 202.
Further, AC-DC converter 20 by the direct voltage output after rectification to inverter 30.
The DC voltage inputted from AC-DC converter 20 is converted to for driving horse by inverter 30
Reach the alternating voltage of 40.Inverter 30 is such as made up of 6 switch elements.Switch element 301～
306 respectively from controlling device 50 input control voltage, when the control voltage inputted is Hi state
Switch to on-state (conducting state), switch to when the control voltage inputted is Lo state
Dissengaged positions (nonconducting state).And, inverter 30 generates the U phase driving motor 40 respectively
Voltage, V phase voltage, W phase voltage.Control voltage PWM (Pulse the most as shown in Figure 2
Width Modulation) signal.Controlling voltage is the voltage driving motor 40 than inverter 30
The voltage in the cycle that one cycle is the shortest.In each cycle of control signal, control the arteries and veins of voltage
Rush width to change, in order to the amplitude of inverter 30 output to the alternating voltage of motor 40 is when each
It is carved into as suitable size.
Switch element 301～306 is respectively such as IGBT (Insulated Gate Bipolar
Or power MOSFET (Metal Oxide Semiconductor Field Effect Transistor)
Transistor)。
Alternating voltage that motor 40 exports according to inverter 30 and action.Motor 40 for example, air-conditioning
The compressor motor of the compressor of machine.
Control device 50 and possess test section 501,502, two A/D (Analog to of voltage detection department
Digital) change-over circuit 503,504 (A/D converter section), driving signal generator 505, crystal
Pipe circuit 506 and A/D conversion detection unit 507 (detection unit).
Test section 501 detects the curtage in off-premises station 1.Such as, test section 501 is resistance,
And detect the three-phase alternating current i.e. motor current of circulation in motor 40.Such as, at switch element
301,304,306 is on-state, and when switch element 302,303,305 is dissengaged positions,
With control switch element 301～306 control electric current corresponding to voltage from switch element 301 via right
Motor 40 should be input in the distribution of U phase, and from motor 40 via respectively with V phase and W phase
Corresponding each distribution exports two switch elements 304,306.Thus, test section 501 is in switch unit
Part 301,304,306 is on-state, and when switch element 302,303,305 is dissengaged positions,
The electric current being input to motor 40 from switch element 301 via the distribution corresponding to U phase can be detected.
Further, such as, it is on-state at switch element 301,303,306, and switch element 302,
304,305 when being dissengaged positions, with control switch element 301～306 control the electricity that voltage is corresponding
Stream is input to via each distribution corresponding with U phase and V respectively from two switch elements 301,303
Motor 40, and export switch element 306 from motor 40 via the distribution corresponding to W phase.Thus,
Test section 501 is on-state at switch element 301,303,306, and switch element 302,304,
305 when being dissengaged positions, it is possible to detection exports out via the distribution corresponding to W phase from motor 40
Close the electric current of element 306.
Further, such as, it is on-state at switch element 302,303,306, and switch element 301,
304,305 when being dissengaged positions, with control switch element 301～306 control the electricity that voltage is corresponding
Stream is input to motor 40 from switch element 303 via the distribution corresponding to V phase, and from motor 40 warp
Two switch elements 302,306 are exported by each distribution corresponding with U phase and W respectively.Thus,
Test section 501 is on-state at switch element 302,303,306, and switch element 301,304,
305 when being dissengaged positions, it is possible to detects and inputs via the distribution corresponding to V phase from switch element 303
Electric current to motor 40.
Further, such as, it is on-state at switch element 302,303,305, and switch element 301,
304,306 when being dissengaged positions, with control switch element 301～306 control the electricity that voltage is corresponding
Stream is input to via each distribution corresponding with V phase and W respectively from two switch elements 303,305
Motor 40, and export switch element 302 from motor 40 via the distribution corresponding to U phase.Thus,
Test section 501 is on-state at switch element 302,303,305, and switch element 301,304,
306 when being dissengaged positions, it is possible to detection exports out via the distribution corresponding to U phase from motor 40
Close the electric current of element 302.
Further, such as, it is on-state at switch element 302,304,305, and switch element 301,
303,306 when being dissengaged positions, with control switch element 301～306 control the electricity that voltage is corresponding
Stream is input to motor 40 from switch element 305 via the distribution corresponding to W phase, and from motor 40 warp
Two switch elements 302,304 are exported by each distribution corresponding with U phase and V respectively.Thus,
Test section 501 is on-state at switch element 302,304,305, and switch element 301,303,
306 when being dissengaged positions, it is possible to detects and inputs via the distribution corresponding to W phase from switch element 305
Electric current to motor 40.
Further, such as, it is on-state at switch element 301,304,305, and switch element 302,
303,306 when being dissengaged positions, with control switch element 301～306 control the electricity that voltage is corresponding
Stream is input to via each distribution corresponding with U phase and W respectively from two switch elements 301,305
Motor 40, and export switch element 304 from motor 40 via the distribution corresponding to V phase.Thus,
Test section 501 is on-state at switch element 301,304,305, and switch element 302,303,
306 when being dissengaged positions, it is possible to detection exports out via the distribution corresponding to V phase from motor 40
Close the electric current of element 304.
It addition, switch element 301,303,305 is on-state, and switch element 302,304,
306 when being dissengaged positions, or is on-state at switch element 302,304,306, and switch
Element 301,303,305 is that motor current during dissengaged positions is, the loop current of motor is (same
Shi Chengwei Hi state or in the case of simultaneously becoming Lo state, makes electric current in motor winding coil
The electric current of circulation) circulate in the diode being connected with switch element 301～306 respectively.Further,
The meansigma methods in two cycles of predetermined motor current is 0, and the electric current that test section 501 detects is
Amplitude centered by 0 ampere at the pseudo sine wave fluctuated on the occasion of side and minus value side.
The voltage that voltage detection department 502 detection is corresponding with the electric current that test section 501 detects.Such as,
As it is shown on figure 3, the voltage corresponding with the electric current that test section 501 detects is turned by voltage detection department 502
Be changed to the center of amplitude and the alternating voltage that reference voltage (such as, 2.5V) is consistent, and b1, a1,
B2, a2, b3, the moment output of a3 ....In figure 3, transverse axis represents phase place.Further, vertical
Axle represents amplitude.Shown in Fig. 3 respectively with U phase, V phase, the shaking of alternating voltage corresponding for W
Width is 1.5V, and phase place offsets one from another 120 degree.
Two A/D change-over circuits 503,504 obtain voltage detection department 502 in each regulation moment respectively
The voltage of output.
Close being in the phase place shown in Fig. 4 respectively with U phase, V phase, alternating voltage corresponding for W
When being, in 0 degree～60 degree, the voltage A corresponding to U phase for ceiling voltage is, from switch unit
Part 301 is input to motor 40 via the distribution corresponding to U phase, and from motor 40 via respectively with V
The each distribution the most corresponding with W exports the voltage of two switch elements 304,306.Further, exist
In 0 degree～120 degree, the voltage B corresponding to W phase for minimum voltage is, from two switch elements
301,303 it is input to motor 40 via each distribution corresponding with U phase and V respectively, and from motor
40 export the voltage of switch element 306 via the distribution corresponding to W phase.Further, at 60 degree～
In 180 degree, the voltage A corresponding to V phase for ceiling voltage is, from switch element 303 via correspondence
Distribution in V phase is input to motor 40, and from motor 40 via corresponding with U phase and W respectively
Each distribution export the voltage of two switch elements 302,306.Further, at 120 degree～240
In degree, the voltage B corresponding to U phase for minimum voltage is, from two switch elements 304,306 warp
It is input to motor 40 by each distribution corresponding with V phase and W respectively, and from motor 40 via right
The voltage of switch element 302 should be exported in the distribution of U phase.Further, in 180 degree～300 degree
The voltage A corresponding to W phase for ceiling voltage is, from switch element 305 via corresponding to W phase
Distribution be input to motor 40, and from motor 40 via each distribution corresponding with U phase and V respectively
Export the voltage of two switch elements 302,304.Further, it is minimum in 240 degree～360 degree
The voltage B corresponding to V phase of voltage is, with the control voltage pair controlling switch element 301～306
The electric current answered from two switch elements 301,305 via each distribution corresponding with U phase and W respectively
It is input to motor 40, and exports switch element 304 from motor 40 via the distribution corresponding to V phase
Voltage.
Thus, A/D change-over circuit 503 in 0 degree～60 degree at switch element 301,304,306
For on-state, and each regulation moment (example that switch element 302,303,305 is dissengaged positions
Such as, a1 in each Fig. 4, a2, the adjacent time interval of difference of a3 ...), from voltage
Test section 502 obtains the voltage A in Fig. 3.Further, A/D change-over circuit 503 is at 60 degree～180
Degree is on-state at switch element 302,303,306, and switch element 301,304,305
Each for dissengaged positions specifies the moment, obtains the voltage A Fig. 3 from voltage detection department 502.And
And, A/D change-over circuit 503 at switch element 302,304,305 is in 180 degree～300 degree
On-state, and each regulation moment that switch element 301,303,306 is dissengaged positions, from electricity
Pressure test section 502 obtains the voltage A in Fig. 3.Thus, A/D change-over circuit 503 can be each
The regulation moment obtains the voltage A shown in Fig. 4, i.e. from inverter 30 via respectively with U phase, V phase,
The voltage A corresponding with maximum voltage that distribution corresponding for W is input in each voltage of motor 40.
Further, such as, A/D change-over circuit 504 in 0 degree～120 degree switch element 301,
303,306 is on-state, and each regulation that switch element 302,304,305 is dissengaged positions
Moment (such as, the adjacent time interval of difference of the b1 in each Fig. 4, b2, b3 ...),
The voltage B Fig. 3 is obtained from voltage detection department 502.Further, A/D change-over circuit 504 is 120
Degree～240 degree are on-state at switch element 302,303,305, and switch element 301,
304,306 is that each of dissengaged positions specifies the moment, obtains the electricity Fig. 3 from voltage detection department 502
Pressure B.Further, A/D change-over circuit 504 in 240 degree～360 degree switch element 301,304,
305 is on-state, and each regulation moment that switch element 302,303,306 is dissengaged positions,
The voltage B Fig. 3 is obtained from voltage detection department 502.Thus, A/D change-over circuit 504 can be
Each regulation moment obtains the waveform B shown in Fig. 4, i.e. from motor 40 via respectively with U phase, V
The voltage B corresponding with maximum voltage in each voltage of the distribution output that phase, W are corresponding.
Acquired voltage A (analogue value) is converted to digital value by A/D change-over circuit 503.And,
Digital value is exported driving signal generator 505 and A/D and changes detection unit by A/D change-over circuit 503
507。
Further, acquired voltage B (analogue value) is converted to digital value by A/D change-over circuit 504.
And, digital value is exported driving signal generator 505 and A/D conversion by A/D change-over circuit 504
Detection unit 507.
The switch element 301～306 driving signal generator 505 to generate constituting inverter 30 is carried out
The control signal controlled.Signal generator 505 is driven to generate such as switch element 301～306 to be entered
The pwm signal that row controls.Now, drive signal generator 505 would indicate that to turn from A/D
Change the voltage A of the digital value of circuit 503 input and represent the number from A/D change-over circuit 504 input
The voltage B of word value feeds back in the generation of pwm signal.
Signal generator 505 is driven the control signal generated to be exported via transistor circuit 506
Inverter 30.Further, drive signal generator 505 that the control signal generated is exported A/D
Conversion detection unit 507.
The control signal inputted from driving signal generator 505 is converted to by transistor circuit 506 can
Drive the signal of inverter 30 and export inverter 30.Transistor circuit 506 for example, buffers electricity
Road, and the control signal in each moment being suitable for as shown in Figure 2 is exported inverter 30.
In off-premises station 1, test section 501 detects the motor current of circulation in motor 40.Two
A/D change-over circuit 503,504 by the voltage corresponding with the motor current that test section 501 detects from
The analogue value is converted to digital value.A/D conversion detection unit 507 calculates will be changed by two A/D respectively
Digital value phase adduction of certain period after circuit 503,504 conversion takes the average of the value of 1/2nd times
Value.And, the benchmark electricity determined according to the meansigma methods 0 of certain period of predetermined motor current
The difference of the meansigma methods pressing (such as 2.5V) and calculated is at prescribed limit (such as 1.5V～3.5V)
Outside time, A/D conversion detection unit 507 judges in two A/D change-over circuits 503,504 at least
One is not operating normally.
Then, the process carried out the off-premises station 1 according to present embodiment illustrates.
It addition, here, as a example by the off-premises station 1 shown in Fig. 1, process is illustrated.
First, single-phase AC voltage alternating current power supply 10 exported by off-premises station 1 carry out rectification and
Generate DC voltage, and just generate the alternating voltage of driving motor 40 from the DC voltage generated
The often process of state illustrates.
Following description generates according to the off-premises station 1 of the present embodiment shown in Fig. 5 and drives motor 40
The handling process of the normal condition of alternating voltage.
The alternating current power supply 10 that off-premises station 1 is possessed is by defeated for the single-phase AC voltage of phase shifting 180 degree
Go out to AC-DC converter 20.
The commutation diode storehouse 202 that AC-DC converter 20 possesses inputs list from alternating current power supply 10
Cross streams voltage (step S1).The single-phase alternating current inputted is pressed into by commutation diode storehouse 202
Row all wave rectification (step S2).
Reactor 201 and capacitor 203 constitute smoothing filter, are smoothed by the voltage after rectification
Change (step S3).And, reactor 201 and capacitor 203 are by defeated for the DC voltage after smoothing
Go out to inverter 30.
Inverter 30 when input direct voltage, is then generated for driving by the DC voltage inputted
The alternating voltage (step S4) of motor 40.The alternating voltage generated is exported horse by inverter 30
Reach 40.
Motor 40 is when from inverter 30 input ac voltage, then according to the alternating voltage inputted
Action (step S5).
Then, carry out the process with the normal condition of off-premises station 1 parallel, two A/D of detection turn
The abnormal process changing circuit 503,504 illustrates.
Following description is according to the process of the normal condition with off-premises station 1 of the present embodiment shown in Fig. 6
Carry out parallel, the abnormal handling process of two A/D change-over circuits 503,504 of detection.
And then the process of the step 5 that off-premises station 1 is carried out, A/D conversion detection unit 507 judges motor
Whether 40 be in operation (step S6).Specifically, A/D conversion detection unit 507 is such as from driving
Whether dynamic signal generator 505 obtains and drives signal generator 505 to transistor circuit 506 output control
The information of signal processed.And, A/D conversion detection unit 507 is obtaining expression from driving signal generator
When 505 pairs of transistor circuits 506 export the information of control signal, it is determined that be in operation for motor 40.
Further, A/D conversion detection unit 507 is obtaining expression from driving signal generator 505 to transistor electricity
When road 506 does not exports the information of control signal, it is determined that be not in operation for motor 40.
A/D conversion detection unit 507 judge motor 40 be not in operation time (in step S6, NO),
Terminate the process of off-premises station 1.
Further, A/D conversion detection unit 507 judge motor 40 be in operation time (in step S6,
YES), two A/D change-over circuits 503,504 are exported respectively acquisition with test section 501 just
The often indication signal of the voltage that the upper side and lower side of the motor current of detection is the most corresponding under state.Separately
Outward, corresponding with the upside of motor current voltage refer to from inverter 30 via respectively with U phase, V
The voltage corresponding with maximum voltage that the corresponding distribution of phase, W is input in each voltage of motor 40
(the voltage A shown in Fig. 4).Further, corresponding with the downside of motor current voltage refers to from motor
40 via respectively with U phase, V phase, distribution corresponding for W output each voltage in maximum electricity
The voltage (the voltage B shown in Fig. 4) that pressure is corresponding.
In normal state, test section 501 detects the motor current of circulation in motor 40.Further,
The voltage that voltage detection department 502 detection is corresponding with the motor current that test section 501 detects.
If two A/D change-over circuits 503,504 are respectively from A/D conversion detection unit 507 input instruction
Signal, then obtain from the control signal driving signal generator 505 to export transistor circuit 506
Time information.And, two A/D change-over circuits 503,504 are respectively according to driving signal generator
505 outputs, to the time information of the control signal of transistor circuit 506, obtain in each regulation moment
Voltage (the step the most corresponding with the upper side and lower side of the motor current of voltage detection department 502 output
S7).Specifically, two A/D change-over circuits 503,504 are respectively by driving signal generator
505 outputs are informed in as shown in Figure 2 to the time information of the control signal of transistor circuit 506
In each moment, U phase, V phase, W phase are to turn on state or dissengaged positions respectively.Thus, such as,
When being in the phase relation shown in Fig. 4 with U phase, V phase, voltage corresponding for W respectively, A/D
Change-over circuit 503 is on-state at switch element 301,304,306 in 0 degree～60 degree, and
Switch element 302,303,305 is that each regulation moment of dissengaged positions is (such as, at each Fig. 4
In a1, a2, the adjacent time interval of difference of a3 ...) obtain voltage detection department 502 and export
Voltage A.Further, A/D change-over circuit 503 in 60 degree～180 degree switch element 302,
303,306 is on-state, and each regulation that switch element 301,304,305 is dissengaged positions
Moment obtains voltage A from voltage detection department 502.Further, A/D change-over circuit 503 at 180 degree～
300 degree is on-state at switch element 302,304,305, and switch element 301,303,
306 is the voltage A of each regulation moment acquisition voltage detection department 502 output of dissengaged positions.Thus,
A/D change-over circuit 503 can obtain the voltage A shown in Fig. 4 in each regulation moment, i.e. from inversion
Device 30 is via being input to each voltage of motor 40 with U phase, V phase, distribution corresponding for W respectively
In the voltage A corresponding with maximum voltage.
Further, such as, A/D change-over circuit 504 in 0 degree～120 degree switch element 301,
303,306 is on-state, and each regulation that switch element 302,304,305 is dissengaged positions
Moment (such as, the adjacent time interval of difference of the b1 in each Fig. 4, b2, b3 ...),
Voltage B is obtained from voltage detection department 502.Further, A/D change-over circuit 504 is at 120 degree～240
Degree is on-state at switch element 302,303,305, and switch element 301,304,306
Each for dissengaged positions specifies the moment, obtains voltage B from voltage detection department 502.Further, A/D
Change-over circuit 504 is on-state at switch element 301,304,305 in 240 degree～360 degree,
And each regulation moment that switch element 302,303,306 is dissengaged positions, from voltage detection department 502
Obtain voltage B.Thus, A/D change-over circuit 504 can obtain shown in Fig. 4 in each regulation moment
Waveform B, i.e. from motor 40 via respectively with U phase, V phase, distribution corresponding for W output
The voltage B corresponding with maximum voltage in each voltage.
Acquired voltage A (analogue value) is converted to digital value by A/D change-over circuit 503.And,
Digital value is exported driving signal generator 505 and A/D and changes detection unit by A/D change-over circuit 503
507。
Further, acquired voltage B (analogue value) is converted to digital value by A/D change-over circuit 504.
And, digital value is exported driving signal generator 505 and A/D conversion by A/D change-over circuit 504
Detection unit 507.
A/D conversion detection unit 507 inputs with voltage A (with motor current from A/D change-over circuit 503
Voltage corresponding to upside) corresponding digital value.Further, A/D conversion detection unit 507 turns from A/D
Change the digital value that circuit 504 input is corresponding with voltage B (voltage corresponding with the downside of motor current).
And, A/D conversion detection unit 507 calculate by with corresponding for the voltage A digital value inputted and with electricity
Digital value corresponding for pressure B phase adduction of certain period takes the meansigma methods (step S8) of the value of 1/2nd times.
Here, certain period is predetermined for meansigma methods, be such as a week by 360 shown in Fig. 3 degree
The period etc. of two periodic components of phase.A/D conversion detection unit 507 predefines and is calculating defeated for institute
Become during the meansigma methods of the value that the voltage A entered and voltage B phase adduction of certain period takes 1/2nd times
Reference voltage when voltage (be 2.5V) shown in Fig. 3.
A/D conversion detection unit 507 judges the meansigma methods calculated and according to predetermined motor current
The meansigma methods of certain period and difference between the reference value that determines whether (step in prescribed limit
S9)。
A/D conversion detection unit 507 is in the meansigma methods calculated and according to predetermined motor current
The meansigma methods of certain period and difference (step S9 when prescribed limit is outer between the reference value that determines
In, NO), it is determined that it is not operating normally at least one party in A/D change-over circuit 503 and 504.
Such as, the period that A/D conversion detection unit 507 calculated in two cycles corresponding to motor current will be from
The digital value that two A/D change-over circuits 503,504 input respectively phase adduction of certain period takes 2/
The meansigma methods of the value of 1 times.And, A/D conversion detection unit 507 is at the meansigma methods calculated and voltage
When difference between the reference voltage 2.5V that test section 502 uses is more than 1V, it is determined that A/D turns
Change circuit 503 not to be operating normally.
Further, A/D conversion detection unit 507 (control portion) makes to be equipped with and controls the equipment of device 50 i.e.
The stopping action (abending) (step S10) of off-premises station 1.
Further, A/D conversion detection unit 507 is in the meansigma methods calculated and according to predetermined motor
(the step when meansigma methods of certain period of electric current and difference between the reference value that determines are in prescribed limit
In rapid S9, YES), it is determined that for normal condition, and return to the process of step S6.
Above, to the off-premises station 1 possessing control device 50 according to the first embodiment of the invention
Handling process be illustrated.In the process of above-mentioned off-premises station 1, test section 501 detects horse
Reach the motor current of circulation in 40.Voltage detection department 502 detects the electricity detected with test section 501
The voltage that stream is corresponding.Voltage detection department 502 is detected by two A/D change-over circuits 503,504 respectively
The voltage gone out is converted to digital value from the analogue value.A/D conversion detection unit 507 calculates will be respectively according to two
Digital value phase adduction of certain period after the conversion of individual A/D change-over circuit 503,504 takes 1/2nd times
The meansigma methods of value.Further, A/D conversion detection unit 507 is in the meansigma methods calculated with basis in advance
The meansigma methods 0 of certain period of the motor current determined and the reference voltage (such as 2.5V) that determines it
Between difference when prescribed limit (such as 1.5V～3.5V) is outer, it is determined that be two A/D conversion electricity
Road 503,504 is not operating normally.Further, A/D conversion detection unit 507 makes to be equipped with control device
The equipment of 50 i.e. off-premises station 1 stops action.
Thus, in inverter 30 drives the off-premises station 1 of motor 40, at two A/D change-over circuits
503, when at least one party in 504 is not operating normally i.e. abnormal, it is possible to detect that it is abnormal, and can
Stop possessing the off-premises station 1 controlling device 50 safely.Off-premises station 1 is comprised it addition, can protect
Air conditioning system.
It addition, A/D change-over circuit according to the first embodiment of the invention is not limited to multiple
A/D change-over circuit.As long as A/D change-over circuit can high speed motion, and can be turned by an A/D
Change circuit and obtain the voltage i.e. voltage A corresponding with the upside of motor current and the downside with motor current
Corresponding voltage i.e. voltage B, it is possible to voltage A and voltage B is handled differently, then respectively such as Fig. 7
Shown in, the motor current that will can be detected according to test section 501 by an A/D change-over circuit 503
Voltage be converted to digital value from the analogue value.Furthermore, it is also possible to export according to A/D change-over circuit 503
Digital value, A/D conversion detection unit 507 judges the abnormal operation of A/D change-over circuit 503.
＜ the second embodiment ＞
Then, illustrate second embodiment of the invention be used in possess control device air-conditioning
The structure of the off-premises station in system.
As shown in Figure 8, identically with the off-premises station 1 according to the first embodiment, according to the present invention's
The off-premises station 1 of the second embodiment possess alternating current power supply 10, AC-DC converter 20, inverter 30,
Motor 40 and control device 50.
But, according to the second embodiment control device 50 in the control according to the first embodiment
On the basis of device 50, it is also equipped with test section 508.
Further, test section 501 is connected to the negative voltage side of switch element 302 and alternating current power supply 10
Between son.Therefore, in inverter 30 corresponding to U phase electric current independent of with V phase and W phase
Corresponding electric current, is flowed into the negative electricity of alternating current power supply 10 from switch element 302 via test section 501
Pressure side terminal.
Further, test section 508 is connected to the negative voltage side of switch element 304 and alternating current power supply 10
Between son.Therefore, in inverter 30 corresponding to V phase electric current independent of with U phase and W phase
Corresponding electric current, is flowed into the negative electricity of alternating current power supply 10 from switch element 304 via test section 508
Pressure side terminal.
Further, switch element 306 is connected in series in the negative voltage side terminal of alternating current power supply 10.Therefore,
The electric current corresponding to W phase in inverter 30 independent of the electric current corresponding with U phase and V, from
Switch element 306 is fed directly to the negative voltage side terminal of alternating current power supply 10.
By said structure, test section 501 can individually detect the electric current corresponding to U phase.Further,
Test section 508 can individually detect the electric current corresponding to V phase.
Then, the process of the normal condition with off-premises station 1 is carried out parallel, two A/D of detection are described
The abnormal process of change-over circuit 503,504.It addition, about off-premises station 1 by defeated for alternating current power supply 10
The single-phase AC voltage gone out carries out rectification and generates DC voltage, and is generated by the DC voltage generated
Drive the process of the normal condition of the alternating voltage of motor 40, it is possible to be thought of as implementing with according to first
The process of mode is identical.
The process of the normal condition with the off-premises station 1 according to present embodiment shown in Fig. 9 as described below
Carry out parallel, the abnormal handling process of two A/D change-over circuits 503,504 of detection.
And then the process of step S5 that off-premises station 1 is carried out, A/D conversion detection unit 507 judges horse
Reach whether 40 be in operation (step S21).Specifically, A/D conversion detection unit 507 such as from
Drive signal generator 505 to obtain and drive whether signal generator 505 exports transistor circuit 506
The information of control signal.And, A/D conversion detection unit 507 is obtaining expression from driving signal to produce
When portion 505 exports the information of control signal to transistor circuit 506, it is determined that running for motor 40
In.Further, A/D conversion detection unit 507 is obtaining expression from driving signal generator 505 to crystal
When pipe circuit 506 does not exports the information of control signal, it is determined that be not in operation for motor 40.
A/D conversion detection unit 507 when being judged to that motor 40 is not in operation (in step S21,
NO), the process of off-premises station 1 is terminated.
Further, A/D conversion detection unit 507 is being judged to (step in the case of motor 40 is in operation
In rapid S21, YES), A/D change-over circuit 503 output is obtained with test section 501 at normal shape
The indication signal of the voltage corresponding for U of the motor current detected under state, to A/D change-over circuit
504 outputs obtain corresponding with the V of the motor current that test section 508 detects in normal state
The indication signal of voltage.It addition, the voltage corresponding with the U of motor current is for example, shown in Figure 10
Voltage U.Further, corresponding with the V of motor current voltage for example, voltage V shown in Figure 10.
Further, corresponding with the W of motor current voltage for example, voltage W shown in Figure 10.
Two A/D change-over circuits 503,504 are respectively from A/D conversion detection unit 507 input instruction
During signal, acquisition exports the control signal of transistor circuit 506 from driving signal generator 505
Time information.
A/D change-over circuit 503 is according to driving signal generator 505 output to transistor circuit 506
The time information of control signal, obtains voltage detection department 502 exports and motor in each regulation moment
The voltage C (step S22) corresponding for U of electric current.Further, A/D change-over circuit 504 is according to driving
Dynamic signal generator 505 output is to the time information of the control signal of transistor circuit 506, each
The regulation moment obtains voltage D corresponding for the V with the motor current (step of voltage detection department 502 output
Rapid S23).
Acquired voltage C (analogue value) is converted to digital value by A/D change-over circuit 503.And,
Digital value is exported driving signal generator 505 and A/D and changes detection unit by A/D change-over circuit 503
507。
Further, acquired voltage D (analogue value) is converted to digital value by A/D change-over circuit 504.
And, digital value is exported driving signal generator 505 and A/D conversion by A/D change-over circuit 504
Detection unit 507.
The horse of each voltage C, D that predetermined two A/D change-over circuits 503,504 obtain respectively
Meansigma methods in the cycle reaching electric current is 0.Therefore, A/D conversion detection unit 507 will with from A/D
Digital value corresponding for voltage C (two of such as motor current of certain period of change-over circuit 503 input
Cycle) phase adduction calculating meansigma methods (step S24).
A/D conversion detection unit 507 judges that the meansigma methods that A/D change-over circuit 503 is calculated is pre-with basis
The meansigma methods of certain period of the motor current first determined and between the reference value (such as 2.5V) that determines
Difference whether in prescribed limit (such as 1.5V～3.5V) (step S25).
The meansigma methods that A/D conversion detection unit 507 is calculated at A/D change-over circuit 503 with according in advance
The meansigma methods of certain period of the motor current determined and between the reference value (such as 2.5V) that determines
Difference is when prescribed limit (such as 1.5V～3.5V) is outer (in step S25, NO), it is determined that for
A/D change-over circuit 503 is not operating normally.
Further, A/D conversion detection unit 507 (control portion) makes to be equipped with and controls the equipment of device 50 i.e.
Off-premises station 1 stops action (abending) (step S26).
Further, A/D conversion detection unit 507 calculates at A/D change-over circuit 503 meansigma methods and basis
The meansigma methods of certain period of predetermined motor current and difference between the reference value that determines exists
Time in prescribed limit (in step S25, YES), by with the electricity inputted from A/D change-over circuit 504
Digital value corresponding for pressure D (cycle of such as motor current) phase adduction of certain period calculates average
Value (step S27).
A/D conversion detection unit 507 judges that the meansigma methods that A/D change-over circuit 504 calculates is certain with basis
Whether the meansigma methods of the predetermined motor current of period and difference between the reference value that determines exist
In prescribed limit (such as 1.5V～3.5V) (step S28).
The meansigma methods that A/D conversion detection unit 507 calculates at A/D change-over circuit 504 is the most true with basis
The meansigma methods of certain period of fixed motor current and difference between the reference value that determines are at regulation model
Enclose (such as 1.5V～3.5V) outer time (in step S28, NO), it is determined that for A/D change-over circuit
504 are not operating normally.
Further, A/D conversion detection unit 507 (control portion) makes to be equipped with and controls the equipment of device 50 i.e.
Off-premises station 1 stops action (abending) (step S26).
Further, A/D conversion detection unit 507 calculates at A/D change-over circuit 504 meansigma methods and basis
The meansigma methods of certain period of predetermined motor current and difference between the reference value that determines exists
When prescribed limit (such as 1.5V～3.5V) is interior (in step S28, YES), it is determined that for normal shape
State also returns to the process of step S21.
Above, to the off-premises station 1 possessing control device 50 second embodiment of the invention
Handling process be illustrated.In the process of above-mentioned off-premises station 1, test section 501 detects horse
Reach the motor current of circulation in 40.Voltage detection department 502 detects the electricity detected with test section 501
The voltage that stream is corresponding.The horse of U phase that A/D change-over circuit 503 will detect with voltage detection department 502
The voltage C reaching electric current corresponding is converted to digital value from the analogue value.A/D change-over circuit 504 will be with voltage
The voltage D that the motor current of the V phase that test section 502 detects is corresponding is converted to numeral from the analogue value
Value.A/D conversion detection unit 507 calculates and by the voltage C after A/D change-over circuit 503 conversion
The meansigma methods of corresponding digital value.Further, A/D conversion detection unit 507 the meansigma methods calculated with
The meansigma methods 0 of the certain period according to predetermined motor current and the reference voltage that determines are (such as
2.5V the difference between) is when prescribed limit (such as 1.5V～3.5V) is outer, it is determined that turn for A/D
Change circuit 503 not to be operating normally.It addition, A/D conversion detection unit 507 calculates and changes with by A/D
The meansigma methods of the digital value corresponding for voltage D after circuit 504 conversion.Further, A/D changes detection unit
507 the meansigma methods calculated and the certain period according to predetermined motor current meansigma methods 0 and
Difference between the reference voltage (such as 2.5V) determined is at prescribed limit (such as 1.5V～3.5V)
Time outer, it is determined that be not operating normally for A/D change-over circuit 504.Further, A/D changes detection unit 507
The equipment i.e. off-premises station 1 being equipped with control device 50 is made to stop action.
Thus, in inverter 30 drives the off-premises station 1 of motor 40, at A/D change-over circuit 503
Or in the case of A/D change-over circuit 504 is not operating normally i.e. extremely, it is possible to detect it extremely, and energy
Enough stopping safely possessing the off-premises station 1 controlling device 50.Off-premises station 1 is comprised it addition, can protect
Air conditioning system.
It addition, A/D change-over circuit second embodiment of the invention is not limited to multiple
A/D change-over circuit.As long as A/D change-over circuit can high speed motion, and can be turned by an A/D
Change circuit and obtain voltage C and the voltage D corresponding with V corresponding to U phase, it is possible to would correspond to
The voltage C and the voltage D corresponding with V of U phase are handled differently respectively, the most as shown in figure 11, and can
With by an A/D change-over circuit 503 by with corresponding for the motor current U voltage C detected and
The voltage D corresponding with V is converted to digital value from the analogue value.And, according to A/D change-over circuit
The digital value of 503 outputs, A/D conversion detection unit 507 can be determined that the different of A/D change-over circuit 503
Often action.
Further, A/D change-over circuit second embodiment of the invention, it is also possible to by with W
Corresponding voltage E replaces the voltage D of the voltage C corresponding with above-mentioned U or corresponding with V,
And described voltage E is converted to digital value from the analogue value.In the case of Gai, according to A/D change-over circuit institute
To the deviation of 0, meansigma methods in one cycle of the motor current of the voltage E obtained judges that A/D turns
Change the abnormal operation of circuit.
＜ the 3rd embodiment ＞
Then, illustrate according to third embodiment of the present invention be used in possess control device air-conditioning
The structure of the off-premises station in system.
As shown in figure 12, identically with the off-premises station 1 according to the first embodiment, according to the present invention
The off-premises station 1 of the 3rd embodiment possess alternating current power supply 10, AC-DC converter 20, inverter
30, motor 40 and control device 50.
But, according to the 3rd embodiment control device 50 in the control according to the first embodiment
On the basis of device 50, it is also equipped with 509, two multiplexers 510,511 of sensor and sensor electricity
Pressure converter section 512.
Sensor 509 detects the curtage beyond the motor current of the motor 40 in off-premises station 1.
Sensor 509 detects the motor current of the motor beyond the motor 40 that such as off-premises station 1 is possessed.
Further, the motor that sensor 509 detects beyond the motor 40 such as possessed off-premises station 1 is carried out
The output voltage of the inverter driven.
Voltage detection department 502 or sensor 509 are connected to A/D change-over circuit 503 by multiplexer 510,
And the off-premises station that the alternating voltage that detected by voltage detection department 502 and sensor 509 detect
Any one output in curtage in 1 is to A/D change-over circuit 503.
Voltage detection department 502 or sensor 509 are connected to A/D change-over circuit 504 by multiplexer 511,
And in the off-premises station 1 that detects of voltage that voltage detection department 502 detected and sensor 509
Curtage in any one output to A/D change-over circuit 504.
Electric current in the off-premises station 1 that sensor 509 is detected by sensor voltage converter section 512 or electricity
Pressure is converted to the voltage of correspondence.Further, sensor voltage converter section 512 will conversion after voltage via
Multiplexer 510 output is to A/D change-over circuit 503.Further, sensor voltage converter section 512 will turn
Voltage after changing arrives A/D change-over circuit 504 via multiplexer 511 output.
Here, when predefine the voltage that two A/D change-over circuits 503,504 obtain one is regular
Between meansigma methods time, it is possible to examined by the method identical with the first embodiment or the second embodiment
Survey the exception of A/D change-over circuit 503 or A/D change-over circuit 504.Further, A/D conversion judges
Portion 507 can make the equipment i.e. off-premises station 1 being equipped with control device 50 stop action.
Thus, in inverter 30 drives the off-premises station 1 of motor 40, at A/D change-over circuit 503
Or A/D change-over circuit 504 is not when being operating normally i.e. abnormal, it is possible to detect it and abnormal be not i.e. operating normally,
And can stop possessing the off-premises station 1 controlling device 50 safely.Room is comprised it addition, can protect
The air conditioning system of outer machine 1.
It addition, be not limited to multiple according to the A/D change-over circuit of third embodiment of the present invention
A/D change-over circuit.Identically with the first embodiment or the second embodiment, as long as A/D conversion is electric
Road can high speed motion, it becomes possible to suitably obtained voltage by an A/D change-over circuit, and can be by
Each voltage is handled differently, the most as shown in figure 13, A/D change-over circuit 503 can by voltage from
The analogue value is converted to digital value.And, according to the digital value of A/D change-over circuit 503 output, A/D
Conversion detection unit 507 can be determined that the exception of A/D change-over circuit 503.
Further, voltage detection department 502 according to the embodiment of the present invention can also be according to replacing detection
The electric current that portion 501 and the current sensor such as current transformer of configuring detect is to detect motor current.
Further, the handling process of off-premises station 1 according to the embodiment of the present invention is with about corresponding to three
It is illustrated as a example by the process of the three-phase alternating voltage of cross streams motor, but is not limited to this.
Such as, the handling process of off-premises station 1 can be about two-phase alternating current pressure or four phases more than alternating current
The process of pressure.But, when off-premises station 1 carries out the alternating current more than about two-phase alternating current pressure or four phases
During the process pressed, the phase contrast of each voltage is different from the phase contrast 120 degree of three-phase alternating voltage.Further,
Sometimes the difference such as quantity of the quantity of test section, A/D change-over circuit.
It addition, the handling process in embodiments of the present invention is in the scope that can carry out suitable process
In, it is also possible to the order that replacement processes.
It addition, embodiments of the present invention are illustrated, the control dress that above-mentioned off-premises station 1 possesses
Put 50, in inside, there is computer system.And, the process of above-mentioned process stores with the form of program
In the record medium of embodied on computer readable, read by computer and perform this program and carry out above-mentioned
Process.Here, the record medium of embodied on computer readable refer to disk, photomagneto disk, CD-ROM,
DVD-ROM, semiconductor memory etc..And, it is also possible to this computer program is passed through order wire
Road and be sent to computer, in order to the computer receiving this transmission performs this program.
Further, said procedure can be used for realizing a part for described function.Alternatively, it is also possible to be
By combination, described function is all recorded in the program in computer system and realizes, the most so-called difference
Single cent part (difference program).
Several embodiments of the invention is illustrated, but these embodiments be as an example and
Propose, and do not limit the scope of invention.Further, without departing from the scope of spirit of the present invention
Various omission can be carried out, replace and change.
Claims (5)
1. control a device, wherein, possess:
One or more A/D converter sections, detect voltage detection department in the circuit of object apparatus
Voltage is converted to digital value from the analogue value；And
Detection unit, calculates the meansigma methods of the described digital value after being changed by described A/D converter section,
Benchmark in the meansigma methods calculated with the predetermined meansigma methods of described voltage based on certain period
Difference between value is in the case of prescribed limit is outer, it is determined that described A/D converter section is not operating normally.
Control device the most according to claim 1, wherein,
Possessing control portion, this control portion is judged at least the one of described A/D converter section at described detection unit
Individual be not operating normally in the case of, control to be equipped with the equipment stopping action of this device.
Control device the most according to claim 1 and 2, wherein,
Described voltage detection department detection voltage based on the three-phase alternating current circulated in motor,
Voltage based on described three-phase alternating current is changed by described A/D converter section.
4. a control method, wherein,
Voltage detection department is detected in the circuit of object apparatus by one or more A/D converter sections
Voltage is converted to digital value from the analogue value,
Detection unit calculates the meansigma methods of the described digital value after being changed by described A/D converter section,
The meansigma methods calculated and reference value based on the necessarily predetermined meansigma methods of the described voltage of period
Between difference in the case of prescribed limit is outer, it is determined that described A/D converter section is not operating normally.
5. a program, wherein,
Make computer as following mechanism function:
One or more A/D shifters, detect voltage detection department in the circuit of object apparatus
Voltage be converted to digital value from the analogue value；And
Decision mechanism, calculates the average of the described digital value after being changed by described A/D shifter
Value, at the base of the meansigma methods calculated with the predetermined meansigma methods of described voltage based on certain period
Difference between quasi-value is in the case of prescribed limit is outer, it is determined that described A/D shifter the most normally moves
Make.
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| JP2015-052285 | 2015-03-16 | ||
| JP2015052285A JP6543872B2 (en) | 2015-03-16 | 2015-03-16 | Control device, control method and program |
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| CN105991081B CN105991081B (en) | 2019-05-28 |
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| CN111913105A (en) * | 2019-05-08 | 2020-11-10 | 丹佛斯电力电子有限公司 | Motor drive and method for monitoring measurement data of an electric motor having an operating point |
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| JP7341702B2 (en) * | 2019-04-01 | 2023-09-11 | Ntn株式会社 | Condition monitoring device and condition monitoring method |
| JP7105942B1 (en) | 2021-01-27 | 2022-07-25 | 三菱電機株式会社 | Control device |
| JP7360057B2 (en) | 2021-09-10 | 2023-10-12 | ダイキン工業株式会社 | Inverter device and its current detection method |
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| JPH06181434A (en) * | 1992-12-14 | 1994-06-28 | Hitachi Ltd | Fault detection system for a/d converter |
| JP4643404B2 (en) * | 2005-09-15 | 2011-03-02 | 三菱電機株式会社 | Inverter control device |
| JP2013234851A (en) * | 2010-09-03 | 2013-11-21 | Sanyo Electric Co Ltd | Battery system, electric vehicle, and battery control device |
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| US20050160334A1 (en) * | 2003-12-16 | 2005-07-21 | Hideki Kabune | Apparatus for detecting A/D converter abnormality |
| CN101145042A (en) * | 2006-09-15 | 2008-03-19 | 三菱电机株式会社 | On-vehicle electronic control device |
| US20090021411A1 (en) * | 2007-01-30 | 2009-01-22 | Sharp Kabushiki Kaisha | A/d converter |
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| CN111913105A (en) * | 2019-05-08 | 2020-11-10 | 丹佛斯电力电子有限公司 | Motor drive and method for monitoring measurement data of an electric motor having an operating point |
| CN111913105B (en) * | 2019-05-08 | 2023-06-23 | 丹佛斯电力电子有限公司 | Motor driver and method for monitoring measurement data of an electric motor having an operating point |
Also Published As
| Publication number | Publication date |
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| JP6543872B2 (en) | 2019-07-17 |
| JP2016174444A (en) | 2016-09-29 |
| CN105991081B (en) | 2019-05-28 |
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