CN210156247U - Winding structure of angle sensor - Google Patents
Winding structure of angle sensor Download PDFInfo
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- CN210156247U CN210156247U CN201920929703.0U CN201920929703U CN210156247U CN 210156247 U CN210156247 U CN 210156247U CN 201920929703 U CN201920929703 U CN 201920929703U CN 210156247 U CN210156247 U CN 210156247U
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Abstract
The utility model relates to a winding structure of an angle sensor, which comprises an exciting coil and a receiving coil which are arranged on a circuit board; the exciting coil is connected with the processing circuit, and the receiving coil comprises a first receiving coil and a second receiving coil which are respectively connected with the processing circuit; the first receiving coil and the second receiving coil are both arranged on the inner side of the exciting coil; the exciting coil, the first receiving coil and the second receiving coil are wound for a plurality of circles along the circumferential direction and are coaxially arranged; the exciting coils are distributed on any one of the two surfaces of the circuit board, or the exciting coils are distributed on the two surfaces of the circuit board; each circle of the first receiving coil is wound on the front surface and the back surface of the circuit board alternately, and the projection of the first receiving coil on the plane where the circuit board is located forms a plurality of sequentially connected closed loops. The utility model discloses a wire winding structure is better to the adaptability of the size of air gap, low in manufacturing cost, light in weight.
Description
Technical Field
The utility model belongs to the technical field of rotary transformer, specifically say and relate to an angle sensor's wire winding structure.
Background
At present, widely applied rotary transformers are designed by a reluctance type principle, when a rotor rotates relative to a stator, air gap magnetic conductance in a space changes, the change of the air gap magnetic conductance causes the change of mutual inductance between an input winding and an output winding, and the induced potential of the output winding also changes. In practice, the rotation angle of the rotor is measured by the change of the amplitude value of the output voltage.
However, the rotor of the reluctance type rotary transformer is a salient pole type iron core, and the stator iron core is formed by laminating silicon steel sheets with a certain number of grooves, so that the material cost is high, and the weight is heavier; the working air gap between the rotor and the stator of the reluctance type rotary transformer is small, and the requirement on installation precision is high.
SUMMERY OF THE UTILITY MODEL
According to the problem that exists among the prior art, the utility model provides an angle sensor's wire winding structure, its adaptability to the size of air gap is better, low in manufacturing cost, light in weight.
The utility model adopts the following technical scheme:
a winding structure of an angle sensor comprises an exciting coil and a receiving coil which are arranged on a circuit board; the exciting coil is connected with the processing circuit, and the receiving coil comprises a first receiving coil and a second receiving coil which are respectively connected with the processing circuit; the first receiving coil and the second receiving coil are both arranged on the inner side of the exciting coil;
the exciting coil, the first receiving coil and the second receiving coil are wound for multiple circles along the circumferential direction and are coaxially arranged;
the exciting coils are distributed on any one of the two surfaces of the circuit board, or the exciting coils are distributed on the two surfaces of the circuit board;
each circle of the first receiving coil is wound on the front surface and the back surface of the circuit board alternately, and the projection of the first receiving coil on the plane where the circuit board is located forms a plurality of sequentially connected closed loops; the second receiving coil is wound in the same manner as the first receiving coil, and the first receiving coil and the second receiving coil are arranged by taking a coaxially arranged axis as a circle center and rotating at a certain deviation angle.
Preferably, the first receiving coil and the second receiving coil are wound on the circuit board for two circles along the circumferential direction, and after the first receiving coil is wound on one surface of the circuit board for an angle of a half loop period, the first receiving coil penetrates through the circuit board to be wound on the other surface of the circuit board for an angle of a half loop period, so that the operation is repeated; the projections of the two coils of the first receiving coil on the plane where the circuit board is located are arranged in a staggered mode and are complementary to each other, and the projections of the two coils of the first receiving coil on the plane where the circuit board is located are overlapped to form a circular ring; the second receiving coil is wound in the same manner as the first receiving coil.
Further preferably, the closed loops formed by the projections of the first receiving coil and the second receiving coil on the plane where the circuit board is located are arranged in a fan shape.
Further preferably, the rotation deviation angle of the first receiving coil and the second receiving coil is 1/4 of the loop period angle of the transformer.
The beneficial effects of the utility model reside in that:
1) the winding structure of the utility model comprises an exciting coil and a receiving coil which are arranged on a circuit board; the exciting coil is connected with the processing circuit, and the receiving coil comprises a first receiving coil and a second receiving coil which are respectively connected with the processing circuit; the first receiving coil and the second receiving coil are both arranged on the inner side of the exciting coil; the exciting coil, the first receiving coil and the second receiving coil are wound for multiple circles along the circumferential direction and are coaxially arranged; the exciting coils are distributed on any one of the two surfaces of the circuit board, or the exciting coils are distributed on the two surfaces of the circuit board; each circle of the first receiving coil is wound on the front surface and the back surface of the circuit board alternately, and the projection of the first receiving coil on the plane where the circuit board is located forms a plurality of sequentially connected closed loops; the second receiving coil is wound in the same manner as the first receiving coil, and the first receiving coil and the second receiving coil are arranged by taking a coaxially arranged axis as a circle center and rotating at a certain deviation angle; due to the adoption of the inductive design with the structure, the stator of the rotary transformer is lighter in weight, lower in manufacturing cost and better in adaptability to the size of the air gap between the induction sheet and the stator in the mounting process.
2) The first receiving coil winds the circuit board for two circles along the circumferential direction, and after the first receiving coil winds one surface of the circuit board for an angle of a half loop period, the first receiving coil penetrates through the circuit board to wind the other surface of the circuit board for an angle of a half loop period, and therefore the operation is repeated; the projections of the two coils of the first receiving coil on the plane where the circuit board is located are arranged in a staggered mode and are complementary to each other, and the projections of the two coils of the first receiving coil on the plane where the circuit board is located are overlapped to form a circular ring; the winding mode of the second receiving coil is the same as that of the first receiving coil; the winding method of the receiving coil enables induced electromotive forces generated between the positive loop and the negative loop of the single receiving coil to be mutually offset.
Drawings
Fig. 1 is a schematic diagram of a corresponding rotary transformer according to the present invention.
Fig. 2 is a side view of a corresponding rotary transformer of the present invention.
Fig. 3 is a schematic diagram of the corresponding induction sheet of the rotary transformer of the present invention.
Fig. 4 is a schematic view of the winding structure of the present invention.
Fig. 5a, fig. 5b, and fig. 5c are schematic diagrams of projections of the first coil, the second coil, and the two coils of the first receiving coil of the present invention superimposed on the plane where the circuit board is located, respectively.
Fig. 6a, fig. 6b, and fig. 6c are schematic diagrams of projections of the first coil, the second coil, and the two coils of the second receiving coil of the present invention superimposed on the plane where the circuit board is located, respectively.
Fig. 7 is a schematic diagram of a processing circuit of the resolver according to the present invention.
Reference numerals: 1-induction sheet, 2-stator, 11-ring sheet, 12-convex tooth, 13-nonmagnetic plate, 21-exciting coil, 22-receiving coil, 23-processing circuit, L1-first receiving coil, L2-second receiving coil, U1-inductance chip, R1-first resistor, C1-first capacitor, C2-second capacitor, C3-third capacitor, C4-fourth capacitor and C5-fifth capacitor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 4, the device comprises an exciting coil 21 and a receiving coil 22 which are arranged on a circuit board; the exciting coil 21 is connected with the processing circuit 23, and the receiving coil 22 comprises a first receiving coil L1 and a second receiving coil L2 which are respectively connected with the processing circuit 23; the first receiving coil L1 and the second receiving coil L2 are both disposed inside the exciting coil 21;
the exciting coil 21, the first receiving coil L1 and the second receiving coil L2 are all wound for multiple circles along the circumferential direction and are all coaxially arranged;
the excitation coils 21 are distributed on any one of two surfaces of the circuit board, or the excitation coils 21 are distributed on both surfaces of the circuit board;
each circle of the first receiving coil L1 is alternately wound on the front surface and the back surface of the circuit board, and the projection of the first receiving coil L1 on the plane where the circuit board is located forms a plurality of sequentially connected closed loops; the second receiving coil L2 is wound in the same manner as the first receiving coil L1, and the first receiving coil L1 and the second receiving coil L2 are arranged so as to be rotated at a predetermined angle around a coaxial axis.
As shown in fig. 4, 5a, 5b, 5c, 6a, 6b, and 6c, wherein the thick lines and thin lines in fig. 5a, 5b, 5c, 6a, 6b, and 6c respectively represent coils on different sides of the circuit board. The first receiving coil L1 and the second receiving coil L2 are wound on the circuit board for two circles along the circumferential direction, and the first receiving coil L1 is wound on one surface of the circuit board for a half loop period angle, and then passes through the circuit board to be wound on the other surface of the circuit board for a half loop period angle, so that the operations are repeated; the projections of the two coils of the first receiving coil L1 on the plane where the circuit board is located are arranged in a staggered mode and are complementary to each other, and the projections of the two coils of the first receiving coil L1 on the plane where the circuit board is located are overlapped to form a circular ring; the second receiving coil L2 is wound in the same manner as the first receiving coil L1.
The closed loop formed by the projection of the first receiving coil L1 and the second receiving coil L2 on the plane of the circuit board is arranged in a fan shape.
The rotation deviation angle of the first receiving coil L1 and the second receiving coil L2 is 1/4 of the loop period angle of the transformer.
As shown in fig. 1 and fig. 2, the winding structure of the present invention needs to cooperate with the corresponding sensing chip 1 and the processing circuit 23 during operation, and the following description will be made with reference to the accompanying drawings.
As shown in fig. 3, the sensing piece 1 includes an integrally formed ring piece 11 and a plurality of teeth 12, the plurality of teeth 12 are uniformly distributed along a circumferential direction of the ring piece 11, and a hollow portion is disposed between two adjacent teeth 12.
The planes of the ring plate 11 and the plurality of convex teeth 12 are all in the same plane, and the areas of the plurality of convex teeth 12 are equal.
First receiving coil L1 and second receiving coil L2 and corresponding response piece 1's structure setting for when response piece 1 is rotatory, the area rate of change of the single closed loop that response piece 1 covered along its axial is sinusoidal wave distribution.
The ring piece 11 and the convex teeth 12 are both arranged on the same non-magnetic plate 13, and the non-magnetic plate 13 can be arranged on the measuring rotating shaft in a rotating mode around the axis of the ring piece 11; a gap is provided between the non-magnetic plate 13 and the stator of the transformer.
The convex teeth 12 are arranged in a sine wave shape, and the number of the convex teeth 12 is equal to that of the magnetic poles of the transformer; the outer diameter d1 of the ring plate 11 is equal to the inner diameter d2 of the first receiving coil L1 and the second receiving coil L2, and the distance r1 between the peak of the convex tooth 12 and the coaxially arranged axle center is equal to the outer radius r2 of the first receiving coil L1 and the second receiving coil L2.
In a circle formed by using the coaxially disposed axis as a center and a distance r1 between the peak of each tooth 12 and the coaxially disposed axis as a radius, the area of each tooth 12 is equal to the area of a void between two adjacent teeth 12.
The ring plate 11 and the convex teeth 12 are made of copper, aluminum or stainless steel.
As shown in fig. 7, the processing circuit 23 includes an inductor chip U1, a first pin of the inductor chip U1 is connected to one end of a first resistor R1, and the other end of the first resistor R1 is grounded; pin two of the inductor chip U1 is directly grounded; pin three of the inductor chip U1 is suspended; a pin four of the inductance chip U1 is connected with a power supply and one end of a first capacitor C1, and the other end of the first capacitor C1 is grounded; a pin five of the inductance chip U1 is connected with a reference power supply and one end of a second capacitor C2, and the other end of the second capacitor C2 is grounded; six pins of the inductance chip U1 output sinusoidal signals; a seventh pin of the inductor chip U1 outputs a cosine signal; a pin eight of the inductor chip U1 is connected to one end of the second receiving coil L2, a pin ten of the inductor chip U1 is connected to one end of the first receiving coil L1, the other end of the first receiving coil L1 and the other end of the second receiving coil L2 are both connected to one end of the fourth capacitor C4 and one end of the fifth capacitor C5, the other end of the first receiving coil L1, the other end of the second receiving coil L2 and a pin nine of the inductor chip U1 are all grounded, the other end of the fourth capacitor C4 is respectively connected to one end of the exciting coil 21 and a pin thirteen of the inductor chip U1, the other end of the fifth capacitor C5 is respectively connected to the other end of the exciting coil 21 and a pin twelve of the inductor chip U1, and a middle tap of the exciting coil 21 is connected to an exciting power supply; the eleven pin of the inductance chip U1 is connected with one end of a third capacitor C3, and the other end of the third capacitor C3 is connected with a power supply; pin fourteen of the inductor chip U1 is connected to ground.
The inductance chip U1 adopts a SS1602 type chip of Sensemi company, and the functions of all pins of the inductance chip U1 are described as follows:
a first pin: the anti-lock function, after the chip is locked, the pin is pulled up to the power supply, and the EEPROM can be written repeatedly;
and a second pin: GND, grounding;
a third pin: the output pin can output DAC output, PWM output, reverse PWM output and SENT output through programming; the product is suspended in the air when in use;
and a fourth pin: the chip power supply pin supplies power to the chip through an external power supply, so that the chip can work normally, a first capacitor C1 of 220nF is required to be connected, and the other end of the first capacitor C1 is connected to GND;
and a fifth pin: an output regulation pin for switching the output between the analog output and the digital output by regulating the voltage; a 220nF second capacitor C2 is required to be connected, and the other end of the second capacitor C2 is connected to GND;
and a pin six: the output pin outputs a voltage signal of cosine wave change;
a seventh pin: the output pin outputs a voltage signal with sine wave change;
and a pin eight: a received signal pin through which a signal on the receive coil 22 enters the chip;
and a ninth pin: the reference grounds of pin eight and pin ten are connected to GND;
and a pin ten: a received signal pin through which a signal on the receive coil 22 enters the chip;
eleven pins: the auxiliary test pin needs to be connected with a 220nF third capacitor C3, and the other end of the third capacitor C3 is connected to GND;
and a pin twelve: an LC oscillator pin connected to the exciting coil 21;
pin thirteen: an LC oscillator pin connected to the exciting coil 21;
a fourteen pin: not used, connected to GND.
The utility model discloses when using, can use with the software cooperation among the prior art. The working principle of the present invention is described below in connection with software in the prior art, but it must be noted that: with the utility model discloses matched with software is not the utility model discloses an innovation part, also not the component part of the utility model.
When the induction sheet 1 of the resolver of the present invention is not rotated, the induced electromotive force in the first receiving coil L1 and the second receiving coil L2 is 0; when a direct current voltage is applied to the exciting coil 21, a strong magnetic field is generated, and when the induction sheet 1 rotates, the positive and negative loops of the receiving coil 22 are sequentially covered, and the induced electromotive forces generated by the first receiving coil L1 and the second receiving coil L2 are periodically changed. In addition, a certain rotation deviation angle exists between the first receiving coil L1 and the second receiving coil L2, so that a corresponding electrical angle difference exists between the first receiving coil L1 and the second receiving coil L2, and a cosine signal and a sine signal are output through the processing circuit 23.
According to the formula f pole V/60, a calculation formula of the rotation speed V can be obtained:
V＝60*f/ploe
wherein f is the frequency of the output sine and cosine signal, pole represents the number of magnetic poles, and V represents the rotating speed.
Therefore, the rotating speed V of the measuring rotating shaft can be obtained according to the frequency f of the output sine and cosine signals.
According to the formula tan θ/cos θ u1/u2, the calculation formula of the rotation angle θ can be obtained:
θ＝artan(u1/u2)
where θ is a rotation angle, and u1 and u2 respectively represent a sine signal voltage and a cosine signal voltage at a time at which the rotation angle θ is located.
Therefore, the rotation angle θ of the measurement rotating shaft can be obtained according to the output sine signal voltage u1 and the output cosine signal voltage u 2.
To sum up, the utility model provides an angle sensor's wire winding structure, its adaptability to the size of air gap is better, low in manufacturing cost, light in weight.
Claims (4)
1. The utility model provides an angle sensor's wire winding structure which characterized in that: comprises an exciting coil (21) and a receiving coil (22) arranged on a circuit board; the excitation coil (21) is connected with a processing circuit (23), and the receiving coil (22) comprises a first receiving coil (L1) and a second receiving coil (L2) which are respectively connected with the processing circuit (23); the first receiving coil (L1) and the second receiving coil (L2) are both disposed inside the exciting coil (21);
the exciting coil (21), the first receiving coil (L1) and the second receiving coil (L2) are wound for a plurality of circles along the circumferential direction and are coaxially arranged;
the excitation coils (21) are distributed on any one of the two surfaces of the circuit board, or the excitation coils (21) are distributed on both the two surfaces of the circuit board;
each circle of the first receiving coil (L1) is alternately wound on the front surface and the back surface of the circuit board, and the projection of the first receiving coil (L1) on the plane where the circuit board is located forms a plurality of closed loops which are connected in sequence; the second receiving coil (L2) is wound in the same manner as the first receiving coil (L1), and the first receiving coil (L1) and the second receiving coil (L2) are arranged with a certain rotational deviation around a coaxial axis.
2. The winding structure of an angle sensor according to claim 1, wherein: the first receiving coil (L1) and the second receiving coil (L2) are wound on the circuit board for two circles along the circumferential direction, and after the first receiving coil (L1) is wound on one surface of the circuit board for an angle of a half loop period, the first receiving coil penetrates through the circuit board and is wound on the other surface of the circuit board for an angle of a half loop period, so that the operation is repeated; the projections of the two coils of the first receiving coil (L1) on the plane where the circuit board is located are arranged in a staggered mode and are complementary to each other, and the projections of the two coils of the first receiving coil (L1) on the plane where the circuit board is located are overlapped to form a circular ring; the second receiving coil (L2) is wound in the same manner as the first receiving coil (L1).
3. The winding structure of an angle sensor according to claim 2, wherein: the closed loop formed by the projection of the first receiving coil (L1) and the second receiving coil (L2) on the plane of the circuit board is arranged in a fan shape.
4. The winding structure of an angle sensor according to claim 2, wherein: the rotation deviation angle of the first receiving coil (L1) and the second receiving coil (L2) is 1/4 of the loop period angle of the transformer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820954279 | 2018-06-20 | ||
| CN2018209542790 | 2018-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210156247U true CN210156247U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920929703.0U Active CN210156247U (en) | 2018-06-20 | 2019-06-19 | Winding structure of angle sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210156247U (en) |
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2019
- 2019-06-19 CN CN201920929703.0U patent/CN210156247U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A winding structure of angle sensor Effective date of registration: 20220713 Granted publication date: 20200317 Pledgee: Lu'an yuan financing Company limited by guarantee Pledgor: ANHUI VOBOFF ELECTRON SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2022980010353 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230725 Granted publication date: 20200317 Pledgee: Lu'an yuan financing Company limited by guarantee Pledgor: Shanghai Volboff Electron Science and Technology Co.,Ltd.|ANHUI VOBOFF ELECTRON SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2022980010353 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Winding Structure for Angle Sensors Effective date of registration: 20230726 Granted publication date: 20200317 Pledgee: Lu'an yuan financing Company limited by guarantee Pledgor: ANHUI VOBOFF ELECTRON SCIENCE AND TECHNOLOGY Co.,Ltd.|Shanghai Volboff Electron Science and Technology Co.,Ltd. Registration number: Y2023980049916 |