KR20130064606A - System for wiring mismatch detection of resolver on green car and method thereof - Google Patents

Abstract

PURPOSE: A device and a method for detecting the defective wiring of a resolver of an environmentally-friendly vehicle are provided to verify the existence of the defective wiring of lead wires for connecting input and output terminals of the resolver accurately and conveniently without additional equipment and devices in a process inspecting the performance of a driving motor after manufacturing the driving motor. CONSTITUTION: A device for detecting the defective wiring of a resolver(101) of an environmentally-friendly vehicle comprises a first phase extraction unit(201), a second phase extraction unit(203), a control unit(205), and a display unit(301). The resolver outputs a first carrier frequency amplitude-modulated with respect to the excitation signals input to a stator with a first output terminal and outputs a second carrier frequency with a second output terminal. The first phase extraction unit extracts phases of the first carrier frequency output by the first output terminal of the resolver. The second phase extraction unit extracts phases of the second carrier frequency output by the second output terminal of the resolver. The control unit compares phases of a carrier frequency of the extraction signals input to the resolver and the phases of the first and second carrier frequencies, thereby diagnosing a wiring state of lead wires of the input and output terminals. The display unit outputs the wiring state of the lead wires diagnosed by the control unit with a preset message. [Reference numerals] (101) Resolver; (201) First phase extraction unit; (203) Second phase extraction unit; (205) Control unit; (301) Display unit; (AA) Excitation; (BB) Motor counter-electromotive voltage

Description

Resolver miswire detection device and method of eco-friendly vehicle {SYSTEM FOR WIRING MISMATCH DETECTION OF RESOLVER ON GREEN CAR AND METHOD THEREOF}

The present invention relates to a device for detecting a malfunction of a resolver in an environmentally friendly vehicle, and more particularly, to accurately diagnose a connection state of a lead wire between input and output terminals of a resolver by using an input / output carrier frequency phase of the resolver. The present invention relates to a resolver miswire detection device and method for an environmentally friendly vehicle.

In the hybrid electric vehicle or electric vehicle, permanent magnet synchronous motor (PMSM) is used as a driving motor to obtain driving force.

In order to perform high performance control by applying magnet torque and reluctance torque to the rotor of the driving motor every minute, accurate information about the speed of the driving motor and the position of the rotor as a permanent magnet is required.

In an eco-friendly vehicle, a resolver having a high environmental resistance and a wide range of operating temperatures is commonly used to detect the position of the driving motor.

7 is a diagram illustrating a schematic configuration of a general resolver.

The resolver 10 includes a rotor composed of a stator 13 wound by a coil inside the housing 11 and a permanent magnet installed inside the stator 13, and an AC voltage is supplied to the resolver 10. Outputs the first output terminal (L1, L2) and the cos wave signal for outputting the sin wave signal according to the position of one input terminal (R1, R2) and the permanent magnet rotor 13 consisting of the N pole and the S pole Second output terminals L3 and L4.

When the rotor 15 composed of permanent magnets is rotated while an alternating voltage is applied to the stator 13 formed by winding a coil through the input terminals R1 and R2 of the resolver 10, the stator 13 and The magnetic coupling coefficient is changed between the rotors 15, and the amplitude modulated sinusoidal carrier frequency is output as a sin wave signal through the first output terminals L1 and L2, and the amplitude modulated sinusoidal carrier frequency is cos. The wave signal is outputted through the second output terminals L3 and L4.

Therefore, the rotation angle (θ) of the resolver is changed by using the phase change of the sin wave signal outputted to the first output terminals L1 and L2 of the resolver and the cos wave signal outputted to the second output terminals L3 and L4. ) Will be known.

An excitation signal is applied to the input terminals R1 and R2 of the resolver 10 through the lead wires, and the first output terminals L1 and L2 and the second output terminals L3 and L4 are connected to the RDC ( Resolver to Digital Converter).

The wiring of the lead wires connected to the input terminals R1 and R2 and the first and second output terminals L1, L2, L3 and L4 of the resolver 10 is incorrectly connected to each other through a resistance test ( Misassembly) can be detected, but it is impossible to detect incorrect wiring (misassembly) between the input terminals and the first and second output terminals by a basic resistance test.

In case of incorrect wiring between input and output terminals of the resolver, reverse torque is applied to the motor, causing the vehicle to move upside down, and start-up and damage to the engine, transmission, and motor shaft. .

Therefore, in the process of installing the resolver, the visual inspection and energization inspection of the operator are used to check whether the input terminals and the output terminals are incorrectly connected to each other.

However, the visual inspection may depend on the precision of the operator may cause a missing test, and because the inspection hole must be reflected in the resolver terminal block for the energization test, the internal terminal may be damaged and foreign matter may be introduced to cause other failures.

The present invention has been made to solve the above problems, and an object thereof is to accurately diagnose a connection state of a lead wire between input / output terminals of a resolver by using an input / output carrier frequency phase of the resolver.

According to an embodiment of the present invention, a resolver outputs an amplitude-modulated first carrier frequency to a first output terminal and an output second carrier frequency to a second output terminal with respect to an excitation signal input to the stator; A first phase extracting unit extracting a phase of a first carrier frequency output from the first output terminal of the resolver; A second phase extracting unit extracting a phase of a second carrier frequency output from the second output terminal of the resolver; A control unit for diagnosing the connection state of the lead wires between the input / output terminals of the resolver by comparing the carrier frequency phase of the excitation signal input to the resolver with the phases of the first and second carrier frequencies; Resolver incorrect wiring detection apparatus of the eco-friendly vehicle, characterized in that it comprises a display unit for outputting the connection status of the lead wire diagnosed by the control unit as a set message.

The controller may diagnose a lead wire connection state between input / output terminals of the resolver by comparing only a phase between 0 and 90 ° with respect to a carrier frequency detected at the input / output terminals of the resolver.

If the carrier frequency of the excitation signal input to the resolver and the first carrier frequency detected at the first output terminal and the second carrier frequency detected at the second output terminal are matched in phase, the lead wire between input / output terminals is normal. Judging by the wiring.

The control unit, if any one of the carrier frequency of the excitation signal input to the resolver, the first carrier frequency detected at the first output terminal, the second carrier frequency detected at the second output terminal is detected in reverse phase lead wire between the corresponding output terminal Can be determined to be incorrect.

The control unit is a carrier frequency of the excitation signal input to the resolver and the first carrier frequency detected at the first output terminal is in phase, the carrier frequency of the excitation signal input to the resolver and the carrier frequency detected at the second output terminal When the reverse phase is detected, it may be determined that the lead wire between the second output terminals is miswired.

The control unit has a carrier frequency of the excitation signal input to the resolver and the first carrier frequency detected at the first output terminal being reversed, and a carrier frequency of the excitation signal input to the resolver and the second carrier detected at the second output terminal. When the frequency is detected in phase, it may be determined that the lead wire between the first output terminals is miswired.

Further, according to another embodiment of the present invention, when the operation of the motor is started, the carrier frequency of the excitation signal input to the resolver and the first and second carrier frequencies output from the first and second output terminals of the resolver are detected. process; Extracting and comparing only phases of the A region from the carrier frequency of the detected excitation signal and the first and second carrier frequencies; A method of detecting a malfunctioner of an eco-friendly vehicle, the method comprising determining whether a misconnection between resolver input / output terminals is performed according to a comparison result of the carrier frequency of the excitation signal and the phase A region of the first and second carrier frequencies. Is provided.

And outputting a determination result of a lead wire miswiring between input / output terminals of the resolver in a message format set through a display unit.

The region A in the carrier frequency may mean a phase between 0 and 90 °.

In the phase comparison of the region A, if the carrier frequency of the excitation signal and the first and second carrier frequencies coincide in phase, the lead wire between the resolver input / output terminals may be determined as a normal connection.

When one of the carrier frequency of the excitation signal and the first and second carrier frequencies is detected in the reverse phase in the phase comparison of the region A, the lead wire between the output terminals in which the reverse phase is detected may be determined as a miswiring line.

In the phase comparison of the region A, when the carrier frequency and the first carrier frequency of the excitation signal are in phase, and the carrier frequency and the carrier frequency of the excitation signal are in the reversed phase, the lead wire between the second output terminals may be determined as a miswiring.

In the phase comparison of the region A, if the carrier frequency of the excitation signal and the first carrier frequency are reversed, and the carrier frequency and the second carrier frequency of the excitation signal are in phase, the lead wire between the first output terminals may be determined to be a wrong line.

As described above, the present invention can accurately and conveniently verify whether the lead wire between the input / output terminals of the resolver is incorrect in the process of checking the motor performance after manufacturing the drive motor without additional equipment and devices.

1 is a view schematically showing a resolver incorrect wiring detection apparatus according to an embodiment of the present invention.
2 is a flowchart schematically illustrating a resolver miswire detection procedure according to an embodiment of the present invention.
3 is a diagram illustrating a phase profile with respect to an input / output carrier frequency of a resolver.
4 is a phase waveform showing a normal connection in the detection of a resolver incorrect connection according to an embodiment of the present invention.
FIG. 5 is a phase waveform illustrating a miswiring between second output terminals in a resolver miswiring detection according to an exemplary embodiment of the present invention.
FIG. 6 is a phase waveform illustrating miswiring between first output terminals in a resolver miswiring detection according to an exemplary embodiment of the present invention.
7 is a diagram schematically illustrating a configuration of a general resolver.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

The present invention can be embodied in various different forms, and thus the present invention is not limited to the embodiments described herein.

1 is a view schematically showing a resolver incorrect wiring connection device according to an embodiment of the present invention.

Referring to FIG. 1, an embodiment of the present invention includes a resolver 101, a first phase detector 201, a second phase detector 203, a controller 205, and a display 301.

The resolver 101 rotates a rotor composed of permanent magnets according to the driving of a motor while the carrier frequency E sin ωt of the excitation signal is applied to the stator through the input terminal, thereby rotating the rotor through the first output terminal. A sinusoidal wave shaped first carrier frequency (KE sin ω t sin θ) is output with respect to the carrier frequency E sin ω t, and amplitude modulated with respect to the carrier frequency E sin ω t of the excitation signal through a second output terminal. The second carrier frequency (KE sin ωt · cosθ) in the form of a sinusoidal wave is output.

The first phase extractor 201 is a sinusoidal first carrier frequency KE sin ω t sin θ amplitude-modulated with respect to the carrier frequency E sin ω t of the excitation signal output from the first output terminal of the resolver 101. ) Phase is extracted and applied to the control unit 205.

The second phase extractor 201 is a sinusoidal second carrier frequency KE sin ω t · cos θ amplitude modulated with respect to the carrier frequency E sin ω t of the excitation signal output from the second output terminal of the resolver 101. ) Phase is extracted and applied to the control unit 205.

The control unit 205 is a first frequency output from the first output terminal of the resolver 101 and the carrier frequency (E sin ωt) phase of the excitation signal input to the resolver 101 when the drive is detected after assembly of the motor is completed. The carrier frequency KE sin ω t sin θ phase and the second carrier frequency KE sin ω t cos θ phase output from the second output terminal of the resolver 101 are detected.

The controller 205 extracts only a phase between 0 and 90 ° with respect to a carrier frequency detected at the input / output terminal of the resolver 101 and compares whether all carrier frequencies have an in phase.

The controller 205 detects the carrier frequency E sin ω t of the excitation signal input to the resolver 101, the first carrier frequency KE sin ω t sin θ detected at the first output terminal, and the second output terminal. If the second carrier frequency (KE sin ω t · cos θ) to be matched in phase, the lead wire between the input / output terminals is determined to be a normal connection.

However, the control unit 205 does not operate at the carrier frequency E sin ω t of the excitation signal input to the resolver 101 and at the first carrier frequency KE sin ω t sinθ or the second output terminal detected at the first output terminal. If any one of the detected second carrier frequencies KE sin ω t cos θ is detected in reverse phase, the lead wire between the corresponding output terminals is determined to be miswired.

For example, the control unit 205 is the carrier frequency (E sin ωt) of the excitation signal input to the resolver 101 and the first carrier frequency (KE sin ωt · sinθ) detected at the first output terminal are in phase, If the carrier frequency (E sin ωt) of the excitation signal input to the resolver 101 and the carrier frequency (KE sin ωt · cosθ) detected at the second output terminal are detected in reversed phase, the lead wire between the second output terminals is incorrect. It is judged that it is connected.

In addition, the control unit 205 has the carrier frequency E sin ω t of the excitation signal input to the resolver 101 and the first carrier frequency KE sin ω t sinθ detected at the first output terminal being reversed. When the carrier frequency (E sin ωt) and the carrier frequency (KE sin ωt · cosθ) detected at the second output terminal are detected in phase, the lead wire between the first output terminals is miswired. Determined to be.

The display unit 301 instructs the operator by outputting the diagnosis result of the connection state between the input / output terminals of the resolver 101 determined by the control unit 205 in a predetermined format.

The operation of the present invention including the functions as described above is as follows.

The stator of the resolver 101 is fixed to the housing, the rotor is assembled to the rotating shaft, and the stator and the rotor are assembled at a constant reference position at all times.

As a result, after the motor is finally assembled, the relative angle θ between the stator and the rotor of the resolver 101 always maintains a constant angle.

Comparing the carrier frequency phase of the input terminal of the resolver 101 having a period of electric angle π rad with the carrier frequency phase of the first and second output terminals has a different phase profile for every π / 2 rad, Possible errors in the physical angle can be ignored.

When the carrier frequency E sin ωt of the excitation signal as shown in FIG. 3A is applied to the input terminal of the manufactured resolver 101, the carrier of the excitation signal is shown in FIG. 3C at the first output terminal. The first carrier frequency KE sin ω t sin θ in the form of a sinusoidal wave amplitude modulated with respect to the frequency E sin ω t is output, and the carrier frequency E sin of the excitation signal as shown in FIG. 3B at the second output terminal. The second carrier frequency (KE sin ωt · cosθ) in the form of a sinusoidal amplitude modulated with respect to ωt) is output.

When these signals are divided at 90 ° intervals, they are summarized as follows.

Excitation signal-second output signal Excitation signal-first output signal 0 to 90 ° (A zone) frostbite frostbite 90 to 180 ° (B area) Inverse phase frostbite 180 ~ 270 ° (C zone) Inverse phase Inverse phase 270 ~ 360 ° (D area) frostbite Inverse phase

Therefore, in Table 1, it is possible to detect whether the wiring is incorrect by using the phase of the region A (0 ~ 90 °), this will be described with reference to FIG.

When the operation of the manufactured motor starts (S101), the control unit 205 detects a phase of the carrier frequency (E sin ω t) of the excitation signal applied to the input terminal of the resolver 101.

In addition, the control unit 205 is a sinusoidal wave form first modulated with respect to the carrier frequency (E sin ω t) of the excitation signal output from the first output terminal of the resolver 101 through the first phase extractor 201. The carrier frequency (KE sin ω t sin θ) is detected and amplitude is applied to the carrier frequency E sin ω t of the excitation signal output from the second output terminal of the resolver 101 through the second phase extractor 201. A second carrier frequency (KE sin ω t · cos θ) phase of the modulated sinusoidal wave shape is detected (S102).

The control unit 205 is a carrier frequency (E sin ωt) phase of the excitation signal detected at S102, a first carrier frequency (KE sin ωt · sinθ) phase output from the first output terminal, and a second output terminal. Only phases between 0 and 90 ° are extracted from the two-carrier frequency (KE sin ω t · cosθ) phase (S103).

Then, the phases between the input and output terminals of 0 to 90 ° extracted in step S103 are compared (S104) to determine whether they have an in-phase (S105).

When the lead wire between the input / output terminals of the resolver 101 is incorrectly connected, the phase of the input / output carrier frequency is changed by πrad in comparison with the normal connection, and the inverted phase is output compared to the normal connection.

Accordingly, as shown in FIG. 4 attached in the comparison of S105, the control unit 205 has a carrier frequency E sin ω t of the excitation signal input to the resolver 101 and a first carrier detected at the first output terminal. If the frequency KE sin ω t sin θ and the second carrier frequency KE sin ω t cos θ detected at the second output terminal coincide in phase, the lead wire between the input and output terminals is determined to be a normal connection (S106).

Then, the determined result is output through the display unit 301 in a predetermined format to instruct the operator.

However, in the comparison of S105, the control unit 205 is the carrier frequency (E sin ω t) of the excitation signal input to the resolver 101 and the first carrier frequency (KE sin ω t · sin θ) detected at the first output terminal or If any one of the second carrier frequencies (KE sin ω t · cos θ) detected at the second output terminal is detected in reverse phase, the lead wire between the corresponding output terminals is determined to be incorrectly connected.

Accordingly, the control unit 205, as shown in Figure 5 attached to the carrier frequency (E sin ω t) of the excitation signal input to the resolver 101 and the first carrier frequency (KE sin ω t detected at the first output terminal). Sinθ) is in phase, and when the carrier frequency E sin ω t of the excitation signal input to the resolver 101 and the carrier frequency KE sin ω t cosθ detected at the second output terminal are reversed, the second output is outputted. It is determined that the lead wire between the terminals is miswired (S107) (S108).

In addition, as shown in FIG. 6, the controller 205 controls the carrier frequency E sin ω t of the excitation signal input to the resolver 101 and the first carrier frequency KE sin ω t detected at the first output terminal. Sinθ is reversed, and when the carrier frequency (E sin ωt) of the excitation signal input to the resolver 101 and the carrier frequency KE sin ωt cosθ detected at the second output terminal are detected in phase, It is determined that the lead wire between the output terminals is miswired (S107) (S109).

The diagnosis result of the connection state between the input / output terminals of the resolver 101 determined as described above is outputted in a predetermined format set through the display unit 301 and instructed to the operator.

As described above, the phases of the resolver's input / output carrier frequencies can be compared to conveniently check the connection state of the lead wires between the terminals.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

101: resolver 201: first phase extraction unit
203: second phase extractor 205: control unit
301: display unit

Claims (13)

A resolver for outputting a first carrier frequency amplitude modulated with respect to an excitation signal input to the stator to a first output terminal, and outputting a second carrier frequency to a second output terminal;
A first phase extracting unit extracting a phase of a first carrier frequency output from the first output terminal of the resolver;
A second phase extracting unit extracting a phase of a second carrier frequency output from the second output terminal of the resolver;
A control unit for diagnosing the connection state of the lead wires between the input / output terminals of the resolver by comparing the carrier frequency phase of the excitation signal input to the resolver with the phases of the first and second carrier frequencies;
A display unit configured to output a connection message of a lead wire diagnosed by the controller as a set message;
Resolver incorrect wiring detection device of an environmentally friendly vehicle comprising a. The method of claim 1,
The controller compares only a phase between 0 and 90 ° with respect to a carrier frequency detected at an input / output terminal of the resolver to diagnose a lead wire connection state between the input and output terminals of the resolver. Incorrect wiring detection device. The method of claim 1,
If the carrier frequency of the excitation signal input to the resolver and the first carrier frequency detected at the first output terminal and the second carrier frequency detected at the second output terminal are in phase, the lead wire between input / output terminals is normal. Resolver incorrect wiring detection device for an eco-friendly vehicle, characterized in that determined by the connection. The method of claim 1,
The control unit, if any one of the carrier frequency of the excitation signal input to the resolver, the first carrier frequency detected at the first output terminal, the second carrier frequency detected at the second output terminal is detected in reverse phase lead wire between the corresponding output terminal Resolver incorrect wiring detection device of an environmentally friendly vehicle, characterized in that determined to be incorrect wiring. The method of claim 1,
The control unit is a carrier frequency of the excitation signal input to the resolver and the first carrier frequency detected at the first output terminal is in phase, the carrier frequency of the excitation signal input to the resolver and the carrier frequency detected at the second output terminal And a lead wire between the second output terminals is determined to be miswired when detected in a reversed phase. The method of claim 1,
The control unit has a carrier frequency of the excitation signal input to the resolver and the first carrier frequency detected at the first output terminal being reversed, and a carrier frequency of the excitation signal input to the resolver and the second carrier detected at the second output terminal. Resolver incorrect wiring detection apparatus for an environmentally friendly vehicle, characterized in that if the frequency is detected in phase, the lead wire between the first output terminal is determined to be incorrectly connected. Detecting the carrier frequency of the excitation signal input to the resolver and the first and second carrier frequencies output from the first and second output terminals of the resolver when the motor starts to operate;
Extracting and comparing only phases of the A region from the carrier frequency of the detected excitation signal and the first and second carrier frequencies;
Determining whether a wiring is incorrect between resolver input / output terminals according to a comparison result of the carrier frequency of the excitation signal and the phase A region of the first and second carrier frequencies;
Resolver incorrect wiring detection method of an environmentally friendly vehicle comprising a. The method of claim 7, wherein
And resolving the determination result of the lead wire miswiring between the input / output terminals of the resolver in a message format set through a display unit. The method of claim 7, wherein
The region A at the carrier frequency means a phase between 0 and 90 °. The method of claim 7, wherein
In the phase comparison of the A region, if the carrier frequency of the excitation signal and the first and second carrier frequencies coincide in phase, the lead wire between the resolver input / output terminals is determined as a normal connection. Way. The method of claim 7, wherein
In the phase comparison of the region A, if any one of the carrier frequency of the excitation signal and the first and second carrier frequencies is detected as the reverse phase, the lead wire between the output terminals having the reverse phase detected is determined to be a wrong wiring. Incorrect wiring detection method. The method of claim 7, wherein
In the phase comparison of the A region, the carrier frequency and the first carrier frequency of the excitation signal are in phase, and if the carrier frequency and the carrier frequency of the excitation signal are reversed, the lead wire between the second output terminals is determined to be incorrect. Method for detecting the incorrect wiring of resolver of a vehicle. The method of claim 7, wherein
In the phase comparison of the A region, when the carrier frequency of the excitation signal and the first carrier frequency are reversed, and the carrier frequency and the second carrier frequency of the excitation signal are in phase, the lead wire between the first output terminal is determined to be a wrong line. Resolver incorrect wiring detection method of an environmentally friendly vehicle.

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