CN216252576U - Reluctance type rotary transformer driving circuit, motor and automobile - Google Patents
Reluctance type rotary transformer driving circuit, motor and automobile Download PDFInfo
- Publication number
- CN216252576U CN216252576U CN202122087332.6U CN202122087332U CN216252576U CN 216252576 U CN216252576 U CN 216252576U CN 202122087332 U CN202122087332 U CN 202122087332U CN 216252576 U CN216252576 U CN 216252576U
- Authority
- CN
- China
- Prior art keywords
- triode
- capacitor
- resistor
- output
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The utility model provides a reluctance type rotary transformer driving circuit, a motor and an automobile, and relates to the technical field of motors. The drive circuit includes: a driving unit, a resonance unit, and a phase correction unit; the driving unit is connected with the resonance unit and used for providing driving voltage and driving current for the resonance unit; the resonance unit is connected with an excitation winding of the reluctance type resolver, an output winding of the reluctance type resolver is connected with the phase correction unit, the resonance unit resonates, voltage meeting the amplitude requirement of input voltage of the excitation winding is generated at two ends of the excitation winding, output signals meeting the amplitude requirement are generated on the output winding of the reluctance type resolver, and the phase correction unit is used for carrying out phase correction on the output signals. The utility model does not need to additionally arrange a direct current power supply, directly uses the circuit board to control the power supply, reduces the cost of a device list, reduces the electromagnetic compatibility risk and the structural complexity of the circuit board, and has higher practicability.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a reluctance type rotary transformer driving circuit, a motor and an automobile.
Background
In order to meet the requirement of the precision of an automobile motor control system, a reluctance type rotation is generally adopted to obtain a precise position angle in the current automobile on the market.
The reluctance type rotary transformer generally needs a special driving circuit to provide a signal meeting the amplitude requirement of the rotary transformer input voltage because the excitation winding of the reluctance type rotary transformer needs a higher amplitude of the rotary transformer input voltage. The peak value of the amplitude of the input voltage is generally between 12V and 20V, so that a direct current voltage source for providing direct current of 10V to 15V is required to be independently arranged on a circuit board. In the circuit board, the control power supply is generally 5V or below, so the existence of the direct current voltage source with the direct current of 10-15V not only increases the inventory cost of devices, but also increases the risk of electromagnetic compatibility.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention has been made to provide a reluctance type rotary transformer drive circuit, a motor, and an automobile that overcome or at least partially solve the above problems.
In a first aspect, there is provided a driving circuit for magnetoresistive spin-transfer, the driving circuit comprising: a driving unit, a resonance unit, and a phase correction unit;
the driving unit is connected with the resonance unit and used for providing driving voltage and driving current for the resonance unit, and a power supply used by the driving unit is a circuit board control power supply;
the resonance unit is connected with an excitation winding of the reluctance type resolver, an output winding of the reluctance type resolver is connected with the phase correction unit, the resonance unit performs resonance by using self-inductance of the excitation winding of the reluctance type resolver according to the driving voltage and the driving current, voltage meeting amplitude requirements of input voltage of the excitation winding is generated at two ends of the excitation winding, an output signal meeting the amplitude requirements is generated on the output winding of the reluctance type resolver, and the phase correction unit is used for performing phase correction on the output signal.
Optionally, the driving unit includes: the first triode, the second triode, the third triode and the fourth triode;
the collector electrode of the first triode and the collector electrode of the third triode both receive the output voltage of the control power supply;
the base electrode of the first triode is connected with the base electrode of the second triode and receives an input signal;
the emitting electrode of the first triode is connected with the emitting electrode of the second triode and the resonance unit respectively;
the collector electrode of the second triode is connected with the collector electrode of the fourth triode and both are grounded;
the base electrode of the third triode is connected with the base electrode of the fourth triode and receives the input signal;
and the emitter of the third triode is respectively connected with the emitter of the fourth triode and the resonance unit.
Optionally, the resonance unit includes: the circuit comprises a first capacitor, a second capacitor and a first resistor;
the first end of the first capacitor is respectively connected with the emitter of the third triode and the emitter of the fourth triode;
the second end of the first capacitor is connected with the first end of the first resistor;
the second end of the first resistor is connected with the first end of the excitation winding;
the second end of the excitation winding is connected with the second end of the second capacitor;
and the first end of the second capacitor is respectively connected with the emitter of the first triode and the emitter of the second triode.
Optionally, the output winding includes: a first output winding and a second output winding; the output signal includes: a first output signal and a second output signal;
the phase correction unit includes: a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a second resistor, a third resistor, a fourth resistor and a fifth resistor;
the first end of the third capacitor is respectively connected with the first end of the second resistor and the first end of the first output winding;
the second end of the third capacitor is respectively connected with the first end of the third resistor and the second end of the first output winding;
the first end of the fourth capacitor is connected with the first end of the fourth resistor and the first end of the second output winding respectively;
a second end of the fourth capacitor is connected with a first end of the fifth resistor and a second end of the second output winding respectively;
the second end of the second resistor is connected with the first end of the fifth capacitor;
a second end of the third resistor is connected with a second end of the fifth capacitor, and two ends of the fifth capacitor output the first output signal to the decoding chip;
a second end of the fourth resistor is connected with a first end of the sixth capacitor;
and the second end of the fifth resistor is connected with the second end of the sixth capacitor, and the two ends of the sixth capacitor output the second output signal to the decoding chip.
Optionally, the input signal is a sinusoidal signal; the first triode, the second triode, the third triode and the fourth triode are all controlled by the sinusoidal signal;
the sinusoidal signal controls the first triode, and when the third triode is conducted at the same time, the second triode and the fourth triode are disconnected at the same time;
the sinusoidal signal controls the first triode, and when the third triode is simultaneously disconnected, the second triode and the fourth triode are simultaneously conducted.
Optionally, when the resonance unit performs resonance in combination with the self-inductance of the excitation winding, the capacitance value of the first capacitor and the capacitance value of the second capacitor change, and the frequency of resonance changes;
the resistance value of the first resistor changes and the quality factor of the excitation winding changes.
Optionally, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor, the second resistor, the third resistor, the fourth resistor, and the fifth resistor form a pi filter network, and the pi filter network is configured to perform phase correction on a leading phase of the output signal.
Optionally, the pi-shaped filter network combines with the self-inductance of the output winding to form a second-order filter network, and the second-order filter network is configured to expand a phase range of the phase correction unit for performing phase correction.
In a second aspect, there is provided an electric machine comprising: a drive circuit for a magnetoresistive transmutation as claimed in any of the first aspects.
In a third aspect, an automobile is provided, the automobile comprising: a motor;
the motor includes: a drive circuit for a magnetoresistive transmutation as claimed in any of the first aspects.
The utility model has the following advantages:
the drive unit is connected with the resonance unit and provides the drive voltage and the drive current for the resonance unit, and the power supply used by the drive unit is a circuit board control power supply, namely, the control power supply of the circuit board is directly used, and another direct current power supply does not need to be separately arranged. But the voltage value of the control power supply can not meet the requirement of the input voltage amplitude of the excitation winding of the reluctance type rotary transformer. Therefore, the resonance unit is arranged, and the self-inductance of the excitation winding is skillfully utilized.
The resonance unit is connected with an excitation winding of the reluctance type rotation transformer, an output winding of the reluctance type rotation transformer is connected with the phase correction unit, the resonance unit performs resonance by combining self-inductance of the excitation winding on the basis of driving voltage and driving current, and terminal voltage far larger than the driving voltage can be obtained during resonance because the self-inductance of the excitation winding can be regarded as a constant value in actual work and the quality factor value is larger, namely, the voltage at two ends of the excitation winding is increased to meet the requirement of the amplitude of the input voltage of the excitation winding, and an output signal meeting the requirement of the amplitude is generated on the output winding of the reluctance type rotation transformer. And because the resonance can cause the phase of the output signal to be ahead of that of the input signal, the phase correction unit performs phase correction on the output signal, and the output signal after phase correction meets the requirement between the output signal and the input signal for decoding.
The reluctance type rotary transformer driving circuit does not need to be provided with another direct current power supply independently, but directly uses a control power supply of a circuit board, so that the amplitude requirement of the input voltage of the excitation winding can be met, an output signal meeting the amplitude requirement is generated on the output winding, and finally, the phase correction is carried out on the output signal so as to meet the decoding requirement. Because the reluctance type rotary transformer in the circuit board directly uses the control power supply of the circuit board, another direct current power supply which is independently arranged in the current circuit board is saved, the cost of a device list is reduced, meanwhile, the electromagnetic compatibility risk and the structural complexity of the circuit board are reduced, and the circuit board has higher practicability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a block diagram of a driving circuit of a magnetoresistive spin-transformer according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a preferred driving circuit of the magnetoresistive spin transformer according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The inventor finds that in the current automobile motor control system, at least two power supplies are required to be arranged on a peripheral circuit board of the reluctance type rotary transformer. One path is a control power supply, and the voltage value generated by the control power supply is 5V or below; the other path is a 10-15V direct-current voltage source which is specially used for providing driving voltage for the magneto-resistance type rotary transformer exciting winding.
In the existing reluctance type rotary transformer, the peak-to-peak value of the amplitude of the input voltage on an excitation winding is generally between 12V and 20V of alternating current, so a circuit board is required to be provided with a 10V to 15V direct current voltage source independently to generate and provide 12V to 20V of alternating current.
In the circuit board, a direct current voltage source is additionally arranged, so that the cost of a device list (BOM) is undoubtedly increased, the risk of electromagnetic compatibility (EMC) is increased, and the structural complexity of the circuit board is indirectly increased.
In view of the above problems, the inventor has made extensive research, simulation, and field test to inventively provide a reluctance type rotary transformer driving circuit, a motor, and an automobile according to the present invention, and the technical solution of the present invention will be described and explained in detail below.
Fig. 1 is a schematic block diagram of a driving circuit of a magnetoresistive spin-transformer according to an embodiment of the present invention. The drive circuit of the reluctance type rotary transformer comprises: the device comprises a driving unit, a resonance unit and a phase correction unit. The utility model multiplexes the excitation winding of the reluctance type rotary transformer and the output winding of the reluctance type rotary transformer, thereby not only realizing the function of the reluctance type rotary transformer, but also not needing to additionally arrange a 10-15V direct-current voltage source on a circuit board.
The driving unit is connected with the resonance unit, receives an input signal from the signal generating device and provides driving voltage for the resonance unit, and the driving voltage is provided by the circuit board control power supply. That is, after the signal generating device inputs a signal to the driving unit, the driving unit generates a driving voltage based on the input signal and supplies the driving voltage to the resonance unit. It will of course be appreciated that the drive unit generates and supplies the drive voltage simultaneously with the drive current, which is also simultaneously supplied to the resonant unit.
The resonance unit is connected with an excitation winding of the reluctance type resolver, an output winding of the reluctance type resolver is connected with the phase correction unit, and the excitation winding can be regarded as an inductor which has the characteristic of self-inductance, so that after receiving driving voltage and driving current, the resonance unit can perform resonance by combining the self-inductance of the excitation winding, and the resonance function is to increase the voltage at two ends of the excitation winding to meet the requirement of the amplitude of the input voltage of the excitation winding, so that the two ends of the excitation winding generate the voltage meeting the requirement of the amplitude of the input voltage, and then the output winding generates an output signal meeting the requirement of the amplitude. Assuming that the output voltage value of the circuit board control power supply is 5V, the voltage value of the driving voltage supplied to the resonance unit by the driving unit is 5V, and after resonance, the voltage across the excitation winding is increased to 12-20V.
Since the resonance will cause the phase of the output signal to lead the input signal, which will affect the correct decoding, the phase correction unit performs the phase correction on the output signal, and the phase corrected output signal satisfies the phase requirement between the output signal and the input signal for decoding.
The drive circuit of the magnetic resistance type rotary transformer does not need to be provided with another direct current power supply independently, but directly uses the control power supply of the circuit board, and can meet the requirement of the input voltage amplitude of the excitation winding. Because the 10-15V direct-current power supply independently arranged in the current circuit board is omitted, the cost of a device list can be reduced, and the electromagnetic compatibility risk and the structural complexity of the circuit board are also reduced.
Referring to fig. 2, a schematic diagram of a preferred magnetoresistive spin-mode driver circuit according to an embodiment of the present invention is shown. Fig. 2 includes: the driving circuit comprises a first triode Q1, a second triode Q2, a third triode Q3, a fourth triode Q4, a first capacitor C1, a second capacitor C2, a first resistor R1, an excitation winding resistor EXC1, a first output winding SIN1 (namely a sine signal output winding) and a second output winding COS1 (namely a cosine signal output winding), a third capacitor C3, a fourth capacitor C3, a fifth capacitor C5, a sixth capacitor C6, a second resistor R2, a third resistor R3, a fourth resistor R4 and a fifth resistor R5.
The preferred structure of the drive unit includes: a first transistor Q1, a second transistor Q2, a third transistor Q3, and a fourth transistor Q4. The collector of the first triode Q1 and the collector of the third triode Q3 both receive the output voltage of the control power supply VDD; the base electrode of the first triode Q1 is connected with the base electrode of the second triode Q2 and receives input signals; the emitter of the first triode Q1 is connected to the emitter of the second triode Q2 and the second capacitor C2 in the resonant unit, respectively.
The collector electrode of the second triode Q2 is connected with the collector electrode of the fourth triode Q4, and the collector electrodes are all grounded GND; the base electrode of the third triode Q3 is connected with the base electrode of the fourth triode Q4 and receives input signals; an emitter of the third transistor Q3 is connected to an emitter of the fourth transistor Q4 and the first capacitor C1 in the resonant unit, respectively.
Since the input signal is generally sinusoidal, the first transistor Q1, the second transistor Q2, the third transistor Q3, and the fourth transistor Q4 are controlled by sinusoidal signals. The sinusoidal signal controls the first triode Q1, and when the third triode Q3 is simultaneously conducted, the second triode Q2 and the fourth triode Q4 are simultaneously disconnected; the sinusoidal signal controls the first transistor Q1, and when the third transistor Q3 is turned off at the same time, the second transistor Q2 and the fourth transistor Q4 are turned on at the same time. That is, the driving unit may generate an alternating driving voltage and driving current based on the input signal and the control power supply VDD, and supply them to the resonance unit. In addition, the driving unit can be realized by push-pull output built by a discrete device, similarly, the function similar to the driving unit can be realized, and the circuit structure for providing driving voltage and driving current for the resonance unit based on the input signal can be realized.
The preferred structure of the resonance unit includes: the circuit comprises a first capacitor C1, a second capacitor C2, a first resistor R1 and an excitation winding EXC 1. A first end of the first capacitor C1 is connected with an emitter of the third triode Q3 and an emitter of the fourth triode Q4 respectively; the second end of the first capacitor C1 is connected with the first end of the first resistor R1; a second end of the first resistor R1 is connected to a first end of the field winding. It should be noted that, in general, the excitation winding EXC1 of the magnetoresistive spin transformer is connected in series with a current limiting resistor Rel, and the current limiting resistor Rel is shown in fig. 2 for better embodying the embodiment of the present invention without any change to the structure of the magnetoresistive spin transformer body. Thus, the second terminal of the first resistor R1 is substantially connected to the first terminal of the current limiting resistor Rel, which in turn is connected to the first terminal of the field winding EXC 1.
A second end of the excitation winding EXC1 is connected with a second end of the second capacitor C2; a first end of the second capacitor C2 is connected to an emitter of the first transistor Q1 and an emitter of the second transistor Q2, respectively. The output winding of the reluctance type rotary transformer comprises: a first output winding SIN1 and a second output winding COS 1; the output signal includes: a first output signal and a second output signal.
The resonance unit is combined with the self-inductance of the excitation winding EXC1 to perform resonance, the resonance can increase the voltage at two ends of the excitation winding to meet the requirement of the input voltage amplitude of the excitation winding EXC1, the voltage of 12-20V is generated at two ends of the excitation winding EXC1, and then output signals meeting the requirement of the voltage amplitude are generated on the output windings (namely the first output winding SIN1 and the second output winding COS 1). The specific magnitude of the voltage across the excitation winding that the resonance raises is determined by the frequency change of the resonance and the quality factor of the excitation winding. The resonant frequency can be changed by adjusting and changing the capacitance value of the first capacitor C1 and the capacitance value of the second capacitor C2; the quality factor of the excitation winding can be changed by adjusting and changing the resistance value of the first resistor R1. By the mode, the voltage value at two ends of the excitation winding EXC1 can reach 12-20V finally, and the requirement of the input voltage amplitude of the excitation winding EXC1 is met. In addition, as for the resonant unit, a resonant function can be realized, and any circuit structure can be used to raise the voltage across the excitation winding to meet the amplitude requirement of the input voltage of the excitation winding.
It should be noted that, in the embodiment of the present invention, the excitation winding EXC1, the current limiting resistor Rel, the first output winding SIN1, and the second output winding COS1 are all of existing structures of magnetoresistive transformers. Namely, in the embodiment of the utility model, the reluctance type rotary variable structure is not required to be changed, and only corresponding change is made on the circuit board.
A preferred structure of the phase correction unit includes: the capacitor comprises a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a second resistor R2, a third resistor R3, a fourth resistor R4 and a fifth resistor R5. A first end of the third capacitor C3 is connected to a first end of the second resistor R2 and a first end of the first output winding SIN1, respectively; a second end of the third capacitor C3 is connected to a first end of the third resistor R3 and a second end of the first output winding SIN1, respectively; a second end of the second resistor R2 is connected with a first end of the fifth capacitor C5; the second terminal of the third resistor R3 is connected to the second terminal of the fifth capacitor C5, and the two terminals of the fifth capacitor C5 output the first output signal (i.e., the sinusoidal output signal, which is phase-adjusted) to the decoding chip for decoding.
A first end of the fourth capacitor C4 is connected with a first end of the fourth resistor R4 and a first end of the second output winding COS1, respectively; a second end of the fourth capacitor C4 is connected to a first end of the fifth resistor R5 and a second end of the second output winding COS1, respectively; a second end of the fourth resistor R4 is connected to a first end of the sixth capacitor C6; a second end of the fifth resistor R5 is connected to a second end of the sixth capacitor C6, and two ends of the sixth capacitor C6 output a second output signal (i.e., a cosine output signal, which is phase-adjusted) to the decoding chip. For the phase correction unit, a phase correction function may be implemented, so that the output signal meets a circuit structure required for decoding the phase between the output signal and the input signal, and for simplicity of the description, the preferred structure of the phase correction unit is merely exemplified in the embodiment of the present invention.
In the embodiment of the utility model, the phase advance of the output signal is caused by the resonance to be ahead of the input signal, and the phase advance influences the correct decoding of the decoding chip, so that the phase correction unit performs the phase correction on the output signal, and the output signal after the phase correction meets the phase requirement between the output signal and the input signal for the decoding. In addition, considering that the phase lead of the output signal caused by resonance may be too large, the phase correction unit cannot meet the decoding requirement after performing phase correction on the output signal. The proposal of the solution is as follows:
the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the second resistor R2, the third resistor R3, the fourth resistor R4 and the fifth resistor R5 together form a pi-shaped filter network, and the pi-shaped filter network is used for performing phase correction on the leading phase of the output signal. Meanwhile, the pi-shaped filter network is combined with the respective self-inductance of the first output winding and the second output winding to form a second-order filter network, and the second-order filter network is used for expanding the phase range of the phase correction unit for phase correction, so that the problems that the phase lead of an output signal is too large due to resonance, and the decoding requirements cannot be met after the pi-shaped filter network performs phase correction on the output signal are solved.
In an embodiment of the present invention, based on the above-described reluctance type resolver drive circuit, there is also provided a motor, including: a drive circuit for a magnetoresistive transmutation as claimed in any preceding claim.
In an embodiment of the present invention, there is also provided an automobile based on the above-described magnetoresistive spin-transformer driving circuit, the automobile including: a motor; the motor includes: a drive circuit for a magnetoresistive transmutation as claimed in any preceding claim.
With the above embodiments, in the driving circuit of the magnetoresistive spin transformer of the present invention, the driving unit receives the sinusoidal input signal from the signal generating device, generates the driving voltage and the driving current based on the sinusoidal input signal and the circuit board control power supply, and supplies the driving voltage and the driving current to the resonance unit, without separately providing another direct current power supply. The excitation winding is multiplexed, the self-inductance of the excitation winding is utilized, and the resonance unit is combined for resonance, so that the self-inductance of the excitation winding can be regarded as a constant value in actual work, and the quality factor value is larger, so that a terminal voltage far larger than a driving voltage can be obtained during resonance, namely, the voltages at two ends of the excitation winding are increased to meet the requirement of the input voltage amplitude of the excitation winding.
And because the resonance can cause the phase of the output signal to be ahead of that of the input signal, the phase correction unit and the output winding are combined to enlarge the phase correction range and realize the phase correction of the output signal, and the output signal after the phase correction meets the phase requirement between the output signal and the input signal for decoding.
The reluctance type rotary transformer driving circuit does not need to be provided with another direct current power supply independently, but directly uses a control power supply of a circuit board, so that the amplitude requirement of the input voltage of the excitation winding can be met, an output signal meeting the amplitude requirement is generated on the output winding, and finally, the phase correction is carried out on the output signal so as to meet the decoding requirement. Because the reluctance type rotary transformer in the circuit board directly uses the control power supply of the circuit board, another direct current power supply which is independently arranged in the current circuit board is saved, the cost of a device list is reduced, meanwhile, the electromagnetic compatibility risk and the structural complexity of the circuit board are reduced, and the circuit board has higher practicability.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. A drive circuit for a magnetoresistive transmutation, the drive circuit comprising: a driving unit, a resonance unit, and a phase correction unit;
the driving unit is connected with the resonance unit and used for providing driving voltage and driving current for the resonance unit, and a power supply used by the driving unit is a circuit board control power supply;
the resonance unit is connected with an excitation winding of the reluctance type resolver, an output winding of the reluctance type resolver is connected with the phase correction unit, the resonance unit performs resonance by using self-inductance of the excitation winding of the reluctance type resolver according to the driving voltage and the driving current, voltage meeting amplitude requirements of input voltage of the excitation winding is generated at two ends of the excitation winding, an output signal meeting the amplitude requirements is generated on the output winding of the reluctance type resolver, and the phase correction unit is used for performing phase correction on the output signal.
2. The drive circuit according to claim 1, wherein the drive unit includes: the first triode, the second triode, the third triode and the fourth triode;
the collector electrode of the first triode and the collector electrode of the third triode both receive the output voltage of the control power supply;
the base electrode of the first triode is connected with the base electrode of the second triode and receives an input signal;
the emitting electrode of the first triode is connected with the emitting electrode of the second triode and the resonance unit respectively;
the collector electrode of the second triode is connected with the collector electrode of the fourth triode and both are grounded;
the base electrode of the third triode is connected with the base electrode of the fourth triode and receives the input signal;
and the emitter of the third triode is respectively connected with the emitter of the fourth triode and the resonance unit.
3. The drive circuit according to claim 2, wherein the resonance unit includes: the circuit comprises a first capacitor, a second capacitor and a first resistor;
the first end of the first capacitor is respectively connected with the emitter of the third triode and the emitter of the fourth triode;
the second end of the first capacitor is connected with the first end of the first resistor;
the second end of the first resistor is connected with the first end of the excitation winding;
the second end of the excitation winding is connected with the second end of the second capacitor;
and the first end of the second capacitor is respectively connected with the emitter of the first triode and the emitter of the second triode.
4. The drive circuit of claim 1, wherein the output winding comprises: a first output winding and a second output winding; the output signal includes: a first output signal and a second output signal;
the phase correction unit includes: a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a second resistor, a third resistor, a fourth resistor and a fifth resistor;
the first end of the third capacitor is respectively connected with the first end of the second resistor and the first end of the first output winding;
the second end of the third capacitor is respectively connected with the first end of the third resistor and the second end of the first output winding;
the first end of the fourth capacitor is connected with the first end of the fourth resistor and the first end of the second output winding respectively;
a second end of the fourth capacitor is connected with a first end of the fifth resistor and a second end of the second output winding respectively;
the second end of the second resistor is connected with the first end of the fifth capacitor;
a second end of the third resistor is connected with a second end of the fifth capacitor, and two ends of the fifth capacitor output the first output signal to the decoding chip;
a second end of the fourth resistor is connected with a first end of the sixth capacitor;
and the second end of the fifth resistor is connected with the second end of the sixth capacitor, and the two ends of the sixth capacitor output the second output signal to the decoding chip.
5. The drive circuit according to claim 2, wherein the input signal is a sinusoidal signal; the first triode, the second triode, the third triode and the fourth triode are all controlled by the sinusoidal signal;
the sinusoidal signal controls the first triode, and when the third triode is conducted at the same time, the second triode and the fourth triode are disconnected at the same time;
the sinusoidal signal controls the first triode, and when the third triode is simultaneously disconnected, the second triode and the fourth triode are simultaneously conducted.
6. The driving circuit according to claim 3, wherein when the resonance unit resonates in conjunction with a self-inductance of the excitation winding, a capacitance value of the first capacitor and a capacitance value of the second capacitor change, and a frequency of the resonance changes;
the resistance value of the first resistor changes and the quality factor of the excitation winding changes.
7. The driving circuit according to claim 4, wherein the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor, the second resistor, the third resistor, the fourth resistor, and the fifth resistor form a pi filter network, and the pi filter network is used for phase correcting a leading phase of the output signal.
8. The driving circuit according to claim 7, wherein the pi filter network combines with a self-inductance of the output winding to form a second-order filter network, and the second-order filter network is configured to expand a phase range of the phase correction performed by the phase correction unit.
9. An electric machine, characterized in that the electric machine comprises: a magnetoresistive spin-on driver circuit as claimed in any one of claims 1 to 8.
10. An automobile, characterized in that the automobile comprises: a motor;
the motor includes: a magnetoresistive spin-on driver circuit as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122087332.6U CN216252576U (en) | 2021-08-31 | 2021-08-31 | Reluctance type rotary transformer driving circuit, motor and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122087332.6U CN216252576U (en) | 2021-08-31 | 2021-08-31 | Reluctance type rotary transformer driving circuit, motor and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216252576U true CN216252576U (en) | 2022-04-08 |
Family
ID=80981573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122087332.6U Active CN216252576U (en) | 2021-08-31 | 2021-08-31 | Reluctance type rotary transformer driving circuit, motor and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216252576U (en) |
-
2021
- 2021-08-31 CN CN202122087332.6U patent/CN216252576U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102017101866B4 (en) | Control device for a rotating electrical machine | |
| DE102013113703A1 (en) | Control system for a three-phase rotating machine | |
| US9880027B2 (en) | Resolver excitation apparatus | |
| US8754606B2 (en) | Power supply circuit and motor device | |
| KR101716589B1 (en) | Method for determining the rotor position of an electronically-commuted multi-phase direct current motor | |
| KR20070067076A (en) | Motor drive voltage-boost control | |
| US9843282B2 (en) | Motor control apparatus for vehicles and current reference generation method using the same | |
| CN216252576U (en) | Reluctance type rotary transformer driving circuit, motor and automobile | |
| JP2019201488A (en) | Motor control device and image forming apparatus | |
| US9450520B2 (en) | Space vector pulse modulation based motor driver | |
| CN102624298A (en) | Motor | |
| CN115733413A (en) | Reluctance type rotary transformer driving circuit, driving method and automobile | |
| JPH10304679A (en) | Wiring construction body and inverter unit | |
| CN106972804A (en) | BLDCM Drive System modeling method based on mixed logical dynamics | |
| CN101710810B (en) | Electric motor starting circuit and electric motor starting method | |
| US7309963B2 (en) | Smoothing circuit for improving EMC | |
| CN102197582A (en) | D.C. motor and method for operating said D.C. motor | |
| JP2009189171A (en) | Vehicle drive unit | |
| CN104285374B (en) | Crystal or the clock generator of ceramic resonator and its filtration system | |
| CN101243601B (en) | Motor drive circuits | |
| CN109520402A (en) | A kind of hardware circuit for generating rotation and becoming pumping signal | |
| US11994413B2 (en) | Device for exciting a resolver, and resolver arrangement | |
| US20240007027A1 (en) | Motor control device and method | |
| JP5897923B2 (en) | Rotation detector | |
| CN115589162A (en) | Three-electrode high-frequency high-voltage pack, discharge control method and manufacturing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |