CN102998574B - The fault detection system of the rotary transformer of automobile-used driving electromotor - Google Patents
The fault detection system of the rotary transformer of automobile-used driving electromotor Download PDFInfo
- Publication number
- CN102998574B CN102998574B CN201210280090.5A CN201210280090A CN102998574B CN 102998574 B CN102998574 B CN 102998574B CN 201210280090 A CN201210280090 A CN 201210280090A CN 102998574 B CN102998574 B CN 102998574B
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- Prior art keywords
- signal
- fault detection
- rotary transformer
- sin
- fault
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K24/00—Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
Abstract
The present invention provides the fault detection system of a kind of automobile-used driving engine rotation transformator, it is characterised in that including: R/D converter section；Digital signal the input processing portion that the side-play amount specified in advance is removed and exported will be respectively converted into from the sin signal of described R/D (Resolver to Digital) converter section input and cos signal；The each signal inputted from described input processing portion is taken absolute value, is applied to low pass filter, remove excitation signal the signal processing part exported；By in the quadratic sum of each signal inputted from described signal processing part, application square root calculates the fault detection signal generating unit of fault detection signal；And based on the value according to described fault detection signal, identify the breakdown judge portion of described signals of rotating transformer line fault.Thus, the fault detection system of the rotary transformer of the present invention, in the case of not driving engine speed to limit, at ratio in traditional method short time, utilize sin signal and cos signal to calculate fault detection signal, detect the malfunction that the holding wire of rotary transformer causes because of open circuit and short circuit.
Description
Technical field
The present invention is fault detection system and the control method thereof of a kind of rotary transformer relating to automobile-used driving electromotor,
Says in more detail and relate to that a kind of holding wire that can detect rotary transformer is the most short-circuit and the automobile-used rotary transformer of open circuit
Fault detection system and control method thereof.
Background technology
In order to drive the driving electromotor of vehicle, in order to detection drives the speed of electromotor can make with the angle of rotor
Use rotary transformer.The signal detected by rotary transformer can pass through the transmission of R/D (Resolver to Digital) chip
In microcomputer.
Microcomputer utilizes the signal transmitted by R/D chip, the fault of detection signals of rotating transformer line.
That is, as it is shown in figure 1, the fault detection system of traditional rotary transformer is by receiving sin signal and cos signal
Monitoring signal (following, with sin/cos signal record), if the sin signal received or cos signal certain time (T1) with
When upper period maintains 0V or 5V, being identified as sin or cos holding wire is open circuit fault.
If additionally, as in figure 2 it is shown, sin or cos signal more than certain time (T2) period maintain 2.5 ± 0.3V model
When enclosing interior, being identified as sin or cos holding wire is short trouble.Additionally, the fault detection system of traditional rotary transformer, as
Shown in Fig. 3, sin and cos signal all during period maintenance 2.5 ± 0.3V, is identified as excitation signal line fault more than certain time.
That is, as long as the fault detection system of traditional rotary transformer meets any one in above 4 kinds of conditions, just it is identified as rotating
The holding wire fault of transformator.
But, when short circuit occurs in sin holding wire, electrical angle signal value near 0 ° and 180 ° can be in 2.5 ±
In the range of 0.3V；When short circuit occurs in cos holding wire, electrical angle signal value near 90 ° and 270 ° can be in 2.5 ± 0.3V
In the range of.
In this case, the fault detection system of traditional rotary transformer can be subject to, in the respective corners driving electromotor
In order to detect the constraint that fault needs to set the sufficiently long time or could implement time more than a certain speed near degree.
When time lengthening being set especially for detection fault, even if rotary transformer there occurs physical fault, sentencing
Also can be according to the rotor angle of mistake to driving electromotor to perform electric current control before being set to fault.Thus to causing over current fault
Etc. additional fault, cause power module failure and cause vehicle to travel obstacle.
Additionally, the fault detection system of traditional rotary transformer can only more than a certain speed time can run rotation
, therefore can there is the holding wire event that cannot detect rotary transformer in the field run at a low speed in the fault detection capability of transformator
The problem of barrier.
Patent documentation:
KR 10-2011-0048977A, 2011.05.12, accompanying drawing 1
Summary of the invention
(solving the technical problem that)
It is an object of the invention to provide the fault detection system of a kind of rotary transformer, do not drive engine speed
In the case of restriction, utilize the sin signal of R/D (Resolver to Digital) chip and cos signal to rotary transformer
The open circuit of holding wire and the malfunction of short circuit carry out detecting more efficiently than traditional method.
(solving the means of problem)
In order to reach described purpose, the fault detection system of the rotary transformer of the automobile-used driving electromotor of the present invention, its
It is characterised by, including: the signal inputted on rotary transformer is carried out R/D (the Resolver to changing and exporting
Digital) converter section；The sin signal that will input from described R/D (Resolver to Digital) converter section and cos signal,
It is respectively converted into digital signal the input processing portion that the side-play amount specified in advance is removed and exported；Will be from described input processing
Each signal of portion's input takes absolute value, and is applied to low pass filter, removes excitation signal the signal processing part exported；Will from institute
In the quadratic sum of each signal stating signal processing part input, the fault detection signal that application square root calculates fault detection signal is raw
One-tenth portion；And based on the value according to described fault detection signal, identify that the fault of described signals of rotating transformer line fault is sentenced
Disconnected portion.
Described breakdown judge portion, if be previously set according to the value of described fault detection signal reference value time, it is judged that
The holding wire of described rotary transformer is normal；If the value of described fault detection signal is departing from described reference value, and in advance
When maintaining, in the range of setting, the setting time being previously set, it is judged that the holding wire of described rotary transformer is fault.This
Outward, described reference value can set according to the transformation ratio of described rotary transformer.
K1 be constant, n be the transformation ratio of described rotary transformer, described excitation signal represented by " k1 × sin (wt) ",
Described sin signal is represented by " k1 × n × sin (wt) × sin θ ", described cos signal is by " k1 × n × sin (wt) × cos
θ " when representing, described reference value can be done corresponding setting by n.Herein, when described reference value is 0.4V, described rotation becomes
The described setting time needed for the holding wire breakdown judge of depressor may be set to 1msec.
(effect of invention)
As it has been described above, the fault detection system of the rotary transformer of the present invention, limit not driving engine speed
In the case of, at ratio in traditional method short time, utilize sin signal and cos signal to calculate fault detection signal, detection rotates
The malfunction that the holding wire of transformator causes because of open circuit and short circuit.
Accompanying drawing explanation
Fig. 1 is the open circuit fault detection of the sin/cos signal that the fault detection system according to tradition rotary transformer is described
The oscillogram of method.
Fig. 2 is the short trouble detection of the sin/cos signal that the fault detection system according to tradition rotary transformer is described
The oscillogram of method.
Fig. 3 is the open/short circuit fault inspection of the excitation signal that the fault detection system according to tradition rotary transformer is described
The oscillogram of survey method.
Fig. 4 is the block diagram of the fault detection system of the rotary transformer according to one embodiment of the invention.
Fig. 5 is the rotary transformer letter of the fault detection system that the rotary transformer according to one embodiment of the invention is described
Number line carries out the oscillogram of fault detect.
Fig. 6 is the signals of rotating transformer line of the fault detection system of the rotary transformer according to one embodiment of the invention
Fault detect run in, display sin open circuit oscillogram.
(description of reference numerals)
1: the fault detection system 10:R/D converter section of rotary transformer
20: input processing portion 30: signal processing part
40: fault detection signal generating unit 50: breakdown judge portion
Detailed description of the invention
With reference to the accompanying drawings the embodiment of the fault detection system of the rotary transformer according to the present invention is illustrated.
Fig. 4 is the block diagram of the fault detection system of the rotary transformer according to one embodiment of the invention.As shown in Figure 4,
The fault detection system 1 of rotary transformer be by, the signal inputted on rotary transformer is carried out the R/D changing and exporting
(Resolver to Digital) converter section 10, input processing portion 20, signal processing part 30, fault detection signal generating unit 40
And breakdown judge portion 50 is constituted.Herein, input processing portion 20, signal processing part 30, fault detection signal generating unit 40 and fault
Judging part 50 can be realized by microcomputer.
R/D converter section 10, the signal that the rotary transformer of engine speed and position will be driven to be inputted into from detection
Change and export.Sin signal and cos signal are conveyed to input processing portion 20 by R/D converter section 10 respectively.
Input processing portion 20, is respectively converted into digital signal by the sin/cos signal inputted from R/D converter section 10 and removes
The side-play amount being previously set.Such as, when the sin signal inputted is as shown in the upper side waveform of (a) in Fig. 5, side-play amount is such as
Shown in the lower side waveform of (a) in Fig. 5, may be set to 2.5V.The waveform processed by input processing portion 20 can be shown as
As shown in (b) in Fig. 5.
Signal processing part 30, will take its absolute value respectively by the sin/cos signal carrying out processing from input processing portion 20,
And apply low pass filter to remove excitation signal in described sin/cos signal.Such as, processed by signal processing part 30
Sin_abs_Lpf signal is as shown in (c) in Fig. 5.The waveform of Fig. 5 represented when R/D converter section 10 merely enters sin signal
Schematic diagram.The cos_abs_Lpf signal processed by signal processing part 30 also carries out similar process described in upper.
Fault detection signal generating unit 40, the Sin_abs_Lpf/Cos_abs_Lpf that will be processed by signal processing part 30
Apply square root in the respective quadratic sum of signal, calculate the fault detection signal as shown in (d) in Fig. 5.
Breakdown judge portion 50, based on the fault detection signal value that will be calculated by fault detection signal generating unit 40, is known
The fault of other signals of rotating transformer line.Breakdown judge portion 50 basis, if the base that the value of fault detection signal is previously set
During quasi-value, it is judged that the holding wire of rotary transformer is normal；If the value of fault detection signal is departing from reference value, and sets in advance
When maintaining, in the range of reserving, the setting time being previously set, it is judged that the holding wire of rotary transformer is fault.
Reference value herein is that the transformation ratio of the specification according to rotary transformer, especially rotary transformer sets.Example
As, k1 be constant, n be the transformation ratio of described rotary transformer, described excitation signal represented by " k1 × sin (wt) ", described
Sin signal is represented by " k1 × n × sin (wt) × sin θ ", described cos signal is come by " k1 × n × sin (wt) × cos θ "
During expression, reference value can be done corresponding setting by n.
Below, with reference to Fig. 6, the rotation to the fault detection system 1 of the rotary transformer according to one embodiment of the invention
The fault detect of transformator holding wire runs and illustrates.Herein, reference value is assumed to be 0.45V, will be for fault detect institute
The setting time set is assumed to be 1msec.
As described in Figure 6, breakdown judge portion 50 can be in the value of fault detection signal at the shape of below 0.4V not being reference value
Under state, when maintaining setting time 1msec, it is judged that sin holding wire is short circuit.
As it has been described above, the fault detection system 1 of the rotary transformer according to the present embodiment, do not driving engine speed
In the case of restriction, sin signal and cos signal can be utilized to calculate and can carry out fault at ratio in the traditional method short time
The fault-signal of detection, the malfunction that the holding wire of detection rotary transformer causes because of open circuit and short circuit.
Embodiment above by reference to shown in accompanying drawing describes the present invention, but this enforcement being merely an illustrative
Example, general technical staff of the technical field of the invention is to be understood that, it is possible to therefrom realize other of various deformation and equivalent
Embodiment.
Claims (5)
1. a fault detection system for rotary transformer, it is the fault detect system of rotary transformer of automobile-used driving electromotor
System, it is characterised in that including:
The signal inputted from rotary transformer is carried out R/D (the Resolver to Digital) converter section changed and export；
Number will be respectively converted into from the sin signal of described R/D (Resolver to Digital) converter section input and cos signal
Word signal the input processing portion that the side-play amount being previously set is removed and exported；
Being taken absolute value by each signal inputted from described input processing portion, be applied to low pass filter, removal excitation signal is the most defeated
The signal processing part gone out；
By in the quadratic sum of each signal inputted from described signal processing part, application square root calculates the fault of fault detection signal
Detecting signal generating part；And
Based on value according to described fault detection signal, identify the breakdown judge of described signals of rotating transformer line fault
Portion.
The fault detection system of rotary transformer the most according to claim 1, it is characterised in that
Described breakdown judge portion, if be previously set according to the value of described fault detection signal reference value time, it is judged that described
The holding wire of rotary transformer is normal；If the value of described fault detection signal is departing from described reference value, and it is being previously set
When maintaining, in good scope, the setting time being previously set, it is judged that the holding wire of described rotary transformer is fault.
The fault detection system of rotary transformer the most according to claim 2, it is characterised in that
Described reference value is that the transformation ratio according to described rotary transformer sets.
The fault detection system of rotary transformer the most according to claim 3, it is characterised in that
K1 be constant, n be the transformation ratio of described rotary transformer, described excitation signal represented by " k1 × sin (wt) ", described
Sin signal is represented by " k1 × n × sin (wt) × sin θ ", described cos signal is carried out table by " k1 × n × sin (wt) × cos θ "
When showing, described reference value is done corresponding setting by n.
The fault detection system of rotary transformer the most according to claim 4, it is characterised in that
When described reference value is 0.4V, the described setting time needed for the holding wire breakdown judge of described rotary transformer is set as
1msec。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110092433A KR20130029195A (en) | 2011-09-14 | 2011-09-14 | Resolver failure detecting system for motor of vehicle |
| KR10-2011-0092433 | 2011-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102998574A CN102998574A (en) | 2013-03-27 |
| CN102998574B true CN102998574B (en) | 2016-12-21 |
Family
ID=47927395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210280090.5A Active CN102998574B (en) | 2011-09-14 | 2012-08-08 | The fault detection system of the rotary transformer of automobile-used driving electromotor |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20130029195A (en) |
| CN (1) | CN102998574B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101500143B1 (en) | 2013-09-16 | 2015-03-18 | 현대자동차주식회사 | Fault detection interface circuit of a resolver and method thereof |
| CN104297610B (en) * | 2013-11-28 | 2017-02-01 | 中国航空工业集团公司洛阳电光设备研究所 | Dual-channel rotary transformer open circuit quick-test equipment |
| KR101619593B1 (en) | 2014-07-08 | 2016-05-10 | 현대자동차주식회사 | Method for judging failure in resolver |
| KR101583957B1 (en) | 2014-07-28 | 2016-01-08 | 현대자동차주식회사 | Method for wiring mismatch detection of resolver |
| KR102052871B1 (en) | 2014-10-20 | 2019-12-06 | 현대자동차주식회사 | Method and device for diagnosing a short circuit among resolver's output signals |
| KR101637808B1 (en) | 2015-01-30 | 2016-07-07 | 현대자동차주식회사 | Apparatus and Method for detecting dismatch of rotor axis |
| DE102015211216A1 (en) * | 2015-06-18 | 2016-12-22 | Robert Bosch Gmbh | Method and circuit for detecting a short circuit of the sine or cosine receiver coil of a resolver |
| KR101773334B1 (en) * | 2016-04-25 | 2017-09-12 | 엘에스산전 주식회사 | Apparatus for detecting signal wire open |
| CN108099697B (en) * | 2017-12-19 | 2019-11-12 | 深圳市英威腾电动汽车驱动技术有限公司 | A kind of safe driving control method, apparatus and system |
| CN108735028B (en) * | 2018-06-04 | 2020-08-11 | 浙江大学 | Complete diagnosis system and method for wiring fault of electric circuit |
| CN109669081A (en) * | 2018-12-14 | 2019-04-23 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of method for real-time monitoring of sine and cosine resolver voltage change ratio |
| JP6937922B2 (en) * | 2019-03-01 | 2021-09-22 | 東芝三菱電機産業システム株式会社 | Resolver signal processing device, drive device, resolver signal processing method, and program |
| CN109946540B (en) * | 2019-03-21 | 2021-04-16 | 西安联飞智能装备研究院有限责任公司 | Detection circuit and detection method of sine and cosine resolver |
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| JPH08210874A (en) * | 1995-02-06 | 1996-08-20 | Toyota Motor Corp | Method and device for detecting disconnection of resolver |
| JPH1114691A (en) * | 1997-06-27 | 1999-01-22 | Denso Corp | Disconnection detector for sensor |
| JP2000131096A (en) * | 1998-10-27 | 2000-05-12 | Tamagawa Seiki Co Ltd | Resolver disconnection detecting method |
| CN1719270A (en) * | 2004-07-07 | 2006-01-11 | 三菱电机株式会社 | Resolver malfunction diagnostic circuit |
| JP4122606B2 (en) * | 1998-11-30 | 2008-07-23 | トヨタ自動車株式会社 | Interphase short-circuit detection device |
| CN102053208A (en) * | 2009-11-04 | 2011-05-11 | 现代自动车株式会社 | Circuit and method for detecting short and disconnection of resolver for hybrid electric vehicle |
-
2011
- 2011-09-14 KR KR1020110092433A patent/KR20130029195A/en not_active Application Discontinuation
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2012
- 2012-08-08 CN CN201210280090.5A patent/CN102998574B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08210874A (en) * | 1995-02-06 | 1996-08-20 | Toyota Motor Corp | Method and device for detecting disconnection of resolver |
| JPH1114691A (en) * | 1997-06-27 | 1999-01-22 | Denso Corp | Disconnection detector for sensor |
| JP2000131096A (en) * | 1998-10-27 | 2000-05-12 | Tamagawa Seiki Co Ltd | Resolver disconnection detecting method |
| JP4122606B2 (en) * | 1998-11-30 | 2008-07-23 | トヨタ自動車株式会社 | Interphase short-circuit detection device |
| CN1719270A (en) * | 2004-07-07 | 2006-01-11 | 三菱电机株式会社 | Resolver malfunction diagnostic circuit |
| CN102053208A (en) * | 2009-11-04 | 2011-05-11 | 现代自动车株式会社 | Circuit and method for detecting short and disconnection of resolver for hybrid electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130029195A (en) | 2013-03-22 |
| CN102998574A (en) | 2013-03-27 |
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