CN204373669U - A kind of dual rotary transformer decode system - Google Patents
A kind of dual rotary transformer decode system Download PDFInfo
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- CN204373669U CN204373669U CN201420846190.4U CN201420846190U CN204373669U CN 204373669 U CN204373669 U CN 204373669U CN 201420846190 U CN201420846190 U CN 201420846190U CN 204373669 U CN204373669 U CN 204373669U
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Abstract
The utility model discloses a kind of dual rotary transformer decode system, this system comprises the first rotary transformer decoding circuit module, the second rotary transformer decoding circuit module and flush bonding processor module; The input end of the first rotary transformer decoding circuit module is connected with the rotary transformer output terminal be arranged on Double rotation axle equipment first turning axle, and the input end of the second rotary transformer decoding circuit module is connected with the rotary transformer output terminal be arranged on Double rotation axle equipment second turning axle; First rotary transformer decoding circuit module and the second rotary transformer decoding circuit module are by serial ports or parallel port and flush bonding processor model calling.The utility model asks for the relative position information of Double rotation axle equipment two turning axles in conjunction with rotary transformer decoding circuit module and flush bonding processor.Digitized positional information simulation can be become the output pulse of incremental optical-electricity encoder by the utility model flush bonding processor module, for different demand equipment use.
Description
Technical field
The utility model relates to a kind of position detection field of turning axle, particularly a kind of dual rotary transformer decode system.
Background technology
At present, some equipment has two or more turning axles, often needs the relative position detecting turning axle in its rotary course.Such as, double-rotor machine has two mechanical axis, and two mechanical axis can realize different rotating speeds running.Double-rotor machine due to volume little, lightweight, and work efficiency is also high, is applied to the function that electric automobile also has differential mechanism, can alleviate complete vehicle weight and expand spare time space in car.Therefore, this type of motor application is in will having very large advantage at electric automobile.Adopt in the motor speed regulation system of vector controlled, need real-time detection rotor position or rotating speed, controller by the information detected compared with desired value and to output make corresponding adjustment, more meet desired value with the rotating speed or corner that make motor, thus realize the closed-loop control of position, speed and torque.
Rotary transformer is a kind of high-precision electromagnetic sensor, can be used to rotating shaft angular travel and the angular velocity of measuring rotating object.Rotary transformer is installed relative position and the relative velocity that can measure turning axle in turning axle equipment on the rotary shaft.Rotary transformer because of structure simple, and strong shock resistance, is more and more widely used in automobile motor.
Rotary transformer is made up of stators and rotators, and wherein stator or rotor windings are as the former limit of transformer, and receive field voltage, rotor or stator winding, as the secondary of transformer, obtain induction electromotive force by electromagnetic coupled; Due to rotary transformer export is sinusoidal ac signal, directly cannot apply, need to change especially its output, can become one with the data of rotor relative to stator corner proportion relation, be decoding.Wherein decoding process is by multiple, as software decode, hardware decode, software decode requires higher to software platform and programming levels, there is high reliability, anti-interference strong, the feature such as travelling speed is slow, such as call the method for arc tangent, look-up table etc., hardware decode is high to hardware platform requirements, has features such as copying, difficulty realizes, performance is high, be easily disturbed.Only have the decode system for the rotary transformer being installed on single shaft in the technology of existing comparative maturity, this system cannot be used for solving relative position in multiple axes system.
Utility model content
The purpose of this utility model is that the shortcoming overcoming prior art is with not enough, provides a kind of dual rotary transformer decode system.This system asks for the relative position information of Double rotation axle equipment two turning axles in conjunction with rotary transformer decoding circuit module and flush bonding processor module, has the advantage that decode precision is high and reliability is high.
The purpose of this utility model is achieved through the following technical solutions: a kind of dual rotary transformer decode system, comprises the first rotary transformer decoding circuit module, the second rotary transformer decoding circuit module and flush bonding processor module; The input end of described first rotary transformer decoding circuit module is connected with the rotary transformer output terminal be arranged on Double rotation axle equipment first turning axle, and the input end of described second rotary transformer decoding circuit module is connected with the rotary transformer output terminal be arranged on Double rotation axle equipment second turning axle; Described first rotary transformer decoding circuit module and the second rotary transformer decoding circuit module are by serial ports or parallel port and flush bonding processor model calling.
Preferably, wherein three I/O ports of described flush bonding processor module connect the direct output interface of three-phase.
Preferably, wherein three I/O ports of described flush bonding processor module connect opener circuit respectively.
Further, described opener circuit is made up of NPN triode and resistance, and wherein the base stage of NPN triode connects the I/O port of flush bonding processor module, and grounded emitter, as the output terminal of opener circuit after collector contact resistance.
Preferably, wherein three I/O ports of described flush bonding processor module connect single-ended transfer difference circuit.
Preferably, described first rotary transformer decoding circuit module comprises the first rotary transformer decoding chip, the first excitation buffer circuit and the first signal pre-processing circuit; Described first rotary transformer decoding chip excitation signal output terminal is mounted on the rotary transformer on Double rotation axle equipment first turning axle by the first excitation buffer circuit, this rotary transformer cosine and sine signal output terminal connects the first rotary transformer decoding chip cosine and sine signal input end by the first signal pre-processing circuit;
Described second rotary transformer decoding circuit module comprises the second rotary transformer decoding chip, the second excitation buffer circuit and secondary signal pre-process circuit; Described second rotary transformer decoding chip excitation signal output terminal is mounted on the rotary transformer on Double rotation axle equipment second turning axle by the second excitation buffer circuit, this rotary transformer cosine and sine signal output terminal connects the second rotary transformer decoding chip cosine and sine signal input end by secondary signal pre-process circuit.
Further, described flush bonding processor is one-chip computer module; Described first rotary transformer decoding chip and the second rotary transformer decoding chip are AD2S1200 chip, the excitation signal output terminal of the first rotary transformer decoding chip
eXCwith
be connected with the input end of the first excitation buffer circuit; The excitation signal output terminal of the second rotary transformer decoding chip
eXCwith
be connected with the input end of the second excitation buffer circuit.
Further, described first signal pre-processing circuit comprises the first sinusoidal signal pretreatment module and the first cosine signal pretreatment module;
First cosine signal pretreatment module comprises resistance R38, electric capacity C38, resistance R39 and resistance R37, wherein one end of resistance R38 and one end of resistance R39 are as the input port of the first cosine signal pretreatment module, be mounted on the cosine signal output terminal of the rotary transformer on Double rotation axle equipment first turning axle, the other end of resistance R38 and the other end of resistance R39 are connected respectively the two ends of electric capacity C38; The two ends of resistance R37 connect the two ends of electric capacity C38 respectively, and connect the cosine signal input end of the first rotary transformer decoding chip as the cosine signal output terminal of the first cosine signal pretreatment module
coswith
cosL0port;
First sinusoidal signal pretreatment module comprises resistance R41, electric capacity C39, resistance R42 and resistance R40, wherein one end of resistance R41 and one end of resistance R42 are as the input port of the first sinusoidal signal pretreatment module, be mounted on the sinusoidal signal output terminal of the rotary transformer on Double rotation axle equipment first turning axle, the other end of resistance R41 and the other end of resistance R42 are connected respectively the two ends of electric capacity C39; The two ends of resistance R40 connect the two ends of electric capacity C39 respectively, and connect the sinusoidal signal input end of the first rotary transformer decoding chip as the sinusoidal signal output terminal of the first sinusoidal signal pretreatment module
sinwith
sinL0port.
Further, described secondary signal pre-process circuit comprises the second sinusoidal signal pretreatment module and the second cosine signal pretreatment module;
Second cosine signal pretreatment module comprises resistance R44, electric capacity C40, resistance R45 and resistance R43, wherein one end of resistance R44 and one end of resistance R45 are as the input port of the second cosine signal pretreatment module, be mounted on the cosine signal output terminal of the rotary transformer on Double rotation axle equipment second turning axle, the other end of resistance R44 and the other end of resistance R45 are connected respectively the two ends of electric capacity C40; The two ends of resistance R43 connect the two ends of electric capacity C40 respectively, and connect the cosine signal input end of the second rotary transformer decoding chip as the cosine signal output terminal of the second cosine signal pretreatment module
coswith
cosL0port;
Second sinusoidal signal pretreatment module comprises resistance R47, electric capacity C41, resistance R48 and resistance R46, wherein one end of resistance R47 and one end of resistance R48 are as the input port of the second sinusoidal signal pretreatment module, be mounted on the sinusoidal signal output terminal of the rotary transformer on Double rotation axle equipment second turning axle, the other end of resistance R47 and the other end of resistance R48 are connected respectively the two ends of electric capacity C41; The two ends of resistance R46 connect the two ends of electric capacity C41 respectively, and connect the sinusoidal signal input end of the second rotary transformer decoding chip as the sinusoidal signal output terminal of the second sinusoidal signal pretreatment module
sinwith
sinL0port.
Further, described first excitation buffer circuit comprises the first circuit, second circuit and a LM224 chip; Described first circuit comprises resistance R49, rheochord RW1, resistance R50, resistance R51, rheochord RW2, resistance R52 and double-point double-throw switch S3, wherein double-point double-throw switch S3 comprises the first fixed contact, the second fixed contact, first group of moving contact and second group of moving contact, first fixed contact is connected with one of them moving contact in first group of moving contact by the first blade, and the second fixed contact is connected with one of them moving contact of second group of moving contact by the second blade;
Described first rotary transformer decoding chip
eXCend is connected with one end of rheochord RW1 and one end of resistance R50 respectively by resistance R49, and the other end of rheochord RW1 and the other end of resistance R50 are connected respectively two moving contacts in first group of moving contact of double-point double-throw switch S3; One end that described resistance R49 is connected with resistance R50 and a LM224 chip
1IN-port connects, and described double-point double-throw switch S3 first fixed contact is respectively with a LM224 chip
4IN+port and
1OUTport connects;
Described first rotary transformer decoding chip
end is connected with one end of rheochord RW2 and one end of resistance R52 respectively by resistance R51, and the other end of rheochord RW2 and the other end of resistance R52 are connected respectively two moving contacts in second group of moving contact of double-point double-throw switch S3; One end that described resistance R51 is connected with resistance R52 and a LM224 chip
2IN-port connects, and described double-point double-throw switch S3 second fixed contact is respectively with a LM224 chip
3IN+port and
2OUTport connects;
Described second circuit comprises electric capacity C42, resistance R53, resistance R54, resistance R55, resistance R56, rheochord RW3 and single-pole single-throw switch (SPST) S4; Single-pole single-throw switch (SPST) S4 comprises fixed contact and two moving contacts, and wherein fixed contact is connected with one of them moving contact by blade; Direct supply is connected with one end of electric capacity C42, resistance R54 and rheochord RW3 respectively by resistance R53, the other end ground connection of described electric capacity C42, resistance R54 and rheochord RW3, one end that resistance R53 is connected with electric capacity C42, resistance R54 and rheochord RW3 connects one of them moving contact of single-pole single-throw switch (SPST) S4, another moving contact of single-pole single-throw switch (SPST) S4 connects direct supply by resistance R56 ground connection and by resistance R55, and the fixed contact of single-pole single-throw switch (SPST) S4 is respectively with a LM224 chip
1IN+port and
2IN+port connects;
One LM224 chip
3OUTport connects the input end of the first power amplification circuit, and the output terminal of the first power amplification circuit to connect a LM224 chip
3IN-port, a LM224 chip
4OUTport connects the input end of the second power amplification circuit, and the output terminal of the second power amplification circuit to connect a LM224 chip
4IN-port, the output terminal of the first power amplification circuit and the second power amplification circuit is respectively as the excitation signal output terminal of the first excitation buffer circuit;
Described second excitation buffer circuit comprises tertiary circuit, the 4th circuit and the 2nd LM224 chip; Described tertiary circuit comprises resistance R65, rheochord RW4, resistance R66, resistance R67, rheochord RW5, resistance R68 and double-point double-throw switch S5, wherein double-point double-throw switch S5 comprises the first fixed contact, the second fixed contact, first group of moving contact and second group of moving contact, first fixed contact is connected with one of them moving contact in first group of moving contact by the first blade, and the second fixed contact is connected with one of them moving contact of second group of moving contact by the second blade;
Described second rotary transformer decoding chip
eXCend is connected with one end of rheochord RW4 and one end of resistance R66 respectively by resistance R65, and the other end of rheochord RW4 and the other end of resistance R66 are connected respectively two moving contacts in first group of moving contact of double-point double-throw switch S5; One end that described resistance R65 is connected with resistance R66 and the 2nd LM224 chip
1IN-port connects, and described double-point double-throw switch S5 first fixed contact is respectively with the 2nd LM224 chip
4IN+port and
1OUTport connects;
Described second rotary transformer decoding chip
end is connected with one end of rheochord RW5 and one end of resistance R68 respectively by resistance R67, and the other end of rheochord RW5 and the other end of resistance R68 are connected respectively two moving contacts in second group of moving contact of double-point double-throw switch S5; One end that described resistance R67 is connected with resistance R68 and the 2nd LM224 chip
2IN-port connects, and described double-point double-throw switch S5 second fixed contact is respectively with the 2nd LM224 chip
3IN+port and
2OUTport connects;
Described 4th circuit comprises electric capacity C43, resistance R69, resistance R70, resistance R71, resistance R72, rheochord RW6 and single-pole single-throw switch (SPST) S6; Single-pole single-throw switch (SPST) S6 comprises fixed contact and two moving contacts, and wherein fixed contact is connected with one of them moving contact by blade; Direct supply is connected with one end of electric capacity C43, resistance R70 and rheochord RW6 respectively by resistance R69, the other end ground connection of described electric capacity C43, resistance R70 and rheochord RW6, one end that resistance R69 is connected with electric capacity C43, resistance R70 and rheochord RW6 connects one of them moving contact of single-pole single-throw (SPST) S6 switch, another moving contact of single-pole single-throw switch (SPST) S6 connects direct supply by resistance R72 ground connection and by resistance R71, and the fixed contact of single-pole single-throw switch (SPST) S6 is respectively with the 2nd LM224 chip
1IN+port and
2IN+port connects;
2nd LM224 chip
3OUTport connects the input end of the 3rd power amplification circuit, and the output terminal of the second power amplification circuit connects the 2nd LM224 chip
3IN-port, the 2nd LM224 chip
4OUTport connects the input end of the 4th power amplification circuit, and the output terminal of the second power amplification circuit connects the 2nd LM224 chip
4IN-port, the output terminal of the 3rd power amplification circuit and the 4th power amplification circuit is respectively as the excitation signal output terminal of the second excitation buffer circuit.
The utility model has following advantage and effect relative to prior art:
(1) the utility model exports high-frequency excitation signal on the rotary transformer on two turning axles being arranged on Double rotation axle equipment respectively by the first rotary transformer decoding circuit module and the second rotary transformer decoding circuit module, the cosine and sine signal of generation is sent in the first corresponding rotary transformer decoding circuit module and the second rotary transformer decoding circuit by rotary transformer on two turning axles respectively, position and the velocity information of two turning axles is obtained according to the cosine and sine signal decoding received by the first rotary transformer decoding circuit module and the second rotary transformer decoding circuit, send flush bonding processor module respectively to, the positional information of flush bonding processor module to receive two turning axles carries out the synthesis of relative position, obtain the digitizing relative position information of two turning axles, for opertaing device, solve solving of the relative position of the Double rotation axle being provided with rotary transformer, the equipment having many turning axles for double-rotor machine etc. provides the approach that relative position information gathers.There is relative position information and ask for the advantage that reliability is high and precision is high.
(2) in the utility model dual rotary transformer decode system, wherein three I/O ports of flush bonding processor can be connected with the direct output interface of three-phase, opener circuit and/or single-ended transfer difference circuit, with the rear end equipment making the utility model dual rotary transformer decode system rear end can connect different input demand.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of dual rotary transformer decode system in the utility model embodiment 1.
Fig. 2 a is one-chip computer module STM32 chip interface circuit schematic diagram in the utility model dual rotary transformer decode system.
Fig. 2 b is the utility model dual rotary transformer decode system first rotary transformer decoding chip interface circuit schematic diagram.
Fig. 2 c is the utility model dual rotary transformer decode system second rotary transformer decoding chip interface circuit schematic diagram.
Fig. 3 a is the circuit theory diagrams of the first cosine signal pretreatment module in the utility model dual rotary transformer decode system first signal pre-processing circuit.
Fig. 3 b is the circuit theory diagrams of the first sinusoidal signal pretreatment module in the utility model dual rotary transformer decode system first signal pre-processing circuit.
Fig. 3 c is the circuit theory diagrams of the second cosine signal pretreatment module in the utility model dual rotary transformer decode system secondary signal pre-process circuit.
Fig. 3 d is the circuit theory diagrams of the second sinusoidal signal pretreatment module in the utility model dual rotary transformer decode system secondary signal pre-process circuit.
Fig. 4 a is the circuit theory diagrams of the first circuit in the utility model dual rotary transformer decode system first excitation buffer circuit.
Fig. 4 b is a LM224 chip interface circuit schematic diagram in the utility model dual rotary transformer decode system first excitation buffer circuit.
Fig. 4 c is the circuit theory diagrams of second circuit in the utility model dual rotary transformer decode system first excitation buffer circuit.
Fig. 4 d is the circuit theory diagrams of the first power amplification circuit that in the utility model dual rotary transformer decode system first excitation buffer circuit, a LM224 chip connects.
Fig. 4 e is the circuit theory diagrams of the second power amplification circuit that in the utility model dual rotary transformer decode system first excitation buffer circuit, a LM224 chip connects.
Fig. 5 a is the circuit theory diagrams of tertiary circuit in the utility model dual rotary transformer decode system second excitation buffer circuit.
Fig. 5 b is the 2nd LM224 chip interface circuit schematic diagram in the utility model dual rotary transformer decode system second excitation buffer circuit.
Fig. 5 c is the circuit theory diagrams of the 4th circuit in the utility model dual rotary transformer decode system second excitation buffer circuit.
Fig. 5 d is the circuit theory diagrams of the 3rd power amplification circuit that in the utility model dual rotary transformer decode system second excitation buffer circuit, the 2nd LM224 chip connects.
Fig. 5 e is the circuit theory diagrams of the 4th power amplification circuit that in the utility model dual rotary transformer decode system second excitation buffer circuit, the 2nd LM224 chip connects.
Fig. 6 is the structured flowchart of dual rotary transformer decode system in the utility model embodiment 2.
Fig. 7 is the structured flowchart of dual rotary transformer decode system in the utility model embodiment 3.
Fig. 7 a is that in the utility model embodiment 3, in dual rotary transformer decode system, one-chip computer module connects the circuit theory diagrams of opener circuit and rear end equipment.
Fig. 8 is the structured flowchart of dual rotary transformer decode system in the utility model embodiment 4.
Fig. 8 a is that in the utility model embodiment 4, in dual rotary transformer decode system, one-chip computer module connects the circuit theory diagrams of single-ended transfer difference circuit and rear end equipment.
Fig. 8 b is the circuit theory diagrams of single-ended transfer difference circuit and interface thereof in the utility model embodiment 4.
Fig. 8 c is the circuit theory diagrams of single-ended transfer difference circuit differential interface in the utility model embodiment 4.
Fig. 9 is the structured flowchart of dual rotary transformer decode system in the utility model embodiment 5.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
As shown in Figure 1, present embodiment discloses a kind of dual rotary transformer decode system, the relative position information of two turning axles in Double rotation axle equipment is obtained by this system, wherein Double rotation axle equipment comprises two turning axles, be respectively the first turning axle and the second turning axle, wherein the first turning axle and the second turning axle be separately installed with rotary transformer.The dual rotary transformer decoding of the present embodiment comprises the first rotary transformer decoding circuit module 2, second rotary transformer decoding circuit module 14 and flush bonding processor module; The input end of the first rotary transformer decoding circuit module 2 is connected with the interface 1 of the rotary transformer output terminal be arranged on Double rotation axle equipment first turning axle, and the input end of the second rotary transformer decoding circuit module 14 is connected with the interface 15 of the rotary transformer output terminal on the second turning axle being arranged on Double rotation axle equipment; First rotary transformer decoding circuit module 2 is connected flush bonding processor module with the second rotary transformer decoding circuit module 14 respectively by SPI serial ports or parallel port, and the data in the first rotary transformer decoding circuit module 2 and the second rotary transformer decoding circuit module 14 are sent to flush bonding processor module.Wherein the first rotary transformer decoding circuit module 2, second rotary transformer decoding circuit mould 14 is connected 24V power supply 5 or 12V power supply 6 by supply module 3 with power switch 4 with flush bonding processor module, wherein when power switch control supply module is connected with 24V power supply, the present embodiment dual rotary transformer decode system is closed, and is connected with 12V power supply when power switch controls supply module
Time, the present embodiment dual rotary transformer decode system starts; The flush bonding processor module adopted in the present embodiment is one-chip computer module 13, and this one-chip computer module 13 is STM32 chip as shown in Figure 2 a,
In the present embodiment, the first rotary transformer decoding circuit module 2 comprises the first rotary transformer decoding chip, the first excitation buffer circuit and the first signal pre-processing circuit; First rotary transformer decoding chip excitation signal output terminal is mounted on the rotary transformer on Double rotation axle equipment first turning axle by the first excitation buffer circuit, this rotary transformer cosine and sine signal output terminal connects the first rotary transformer decoding chip cosine and sine signal input end by the first signal pre-processing circuit;
Second rotary transformer decoding circuit module 14 comprises the second rotary transformer decoding chip, the second excitation buffer circuit and secondary signal pre-process circuit; Second rotary transformer decoding chip excitation signal output terminal is mounted on the rotary transformer on the second turning axle of Double rotation axle equipment by the second excitation buffer circuit, this rotary transformer cosine and sine signal output terminal connects the second rotary transformer decoding chip cosine and sine signal input end by secondary signal pre-process circuit.
As shown in figs. 2 b and 2 c, in the present embodiment, the first rotary transformer decoding chip and the second rotary transformer decoding chip are AD2S1200 chip, the excitation signal output terminal of the first rotary transformer decoding chip
eXCwith
be connected with the input end of the first excitation buffer circuit; The excitation signal output terminal of the second rotary transformer decoding chip
eXCwith
be connected with the input end of the second excitation buffer circuit.In the present embodiment, DB11 and the DB10 port of the first rotary transformer decoding chip AD2S1200 is connected respectively PA5 and the PA6 port of one-chip computer module STM32 by SIP serial ports.DB11 and the DB10 port of the second rotary transformer decoding chip AD2S1200 is connected respectively PB13 and the PB14 port of one-chip computer module STM32 by SIP serial ports.
First signal pre-processing circuit of the present embodiment comprises the first sinusoidal signal pretreatment module and the first cosine signal pretreatment module.
As shown in Figure 3 a, first cosine signal pretreatment module comprises resistance R38, electric capacity C38, resistance R39 and resistance R37, wherein one end of resistance R38 and one end of resistance R39 are as the input port of the first cosine signal pretreatment module, be mounted on the cosine signal output terminal of the rotary transformer on Double rotation axle equipment first turning axle, the other end of resistance R38 and the other end of resistance R39 are connected respectively the two ends of electric capacity C38; The two ends of resistance R37 connect the two ends of electric capacity C38 respectively, and connect the cosine signal input end of the first rotary transformer decoding chip as the cosine signal output terminal of the first cosine signal pretreatment module
coswith
cosL0port;
As shown in Figure 3 b, first sinusoidal signal pretreatment module comprises resistance R41, electric capacity C39, resistance R42 and resistance R40, wherein one end of resistance R41 and one end of resistance R42 are as the input port of the first sinusoidal signal pretreatment module, be mounted on the sinusoidal signal output terminal of the rotary transformer on Double rotation axle equipment first turning axle, the other end of resistance R41 and the other end of resistance R42 are connected respectively the two ends of electric capacity C39; The two ends of resistance R40 connect the two ends of electric capacity C39 respectively, and connect the sinusoidal signal input end of the first rotary transformer decoding chip as the sinusoidal signal output terminal of the first sinusoidal signal pretreatment module
sinwith
sinL0port.
The secondary signal pre-process circuit of the present embodiment comprises the second sinusoidal signal pretreatment module and the second cosine signal pretreatment module.
As shown in Figure 3 c, second cosine signal pretreatment module comprises resistance R44, electric capacity C40, resistance R45 and resistance R43, wherein one end of resistance R44 and one end of resistance R45 are as the input port of the second cosine signal pretreatment module, be mounted on the cosine signal output terminal of the rotary transformer on Double rotation axle equipment second turning axle, the other end of resistance R44 and the other end of resistance R45 are connected respectively the two ends of electric capacity C40; The two ends of resistance R43 connect the two ends of electric capacity C40 respectively, and connect the cosine signal input end of the second rotary transformer decoding chip as the cosine signal output terminal of the second cosine signal pretreatment module
coswith
cosL0port;
As shown in Figure 3 d, second sinusoidal signal pretreatment module comprises resistance R47, electric capacity C41, resistance R48 and resistance R46, wherein one end of resistance R47 and one end of resistance R48 are as the input port of the second sinusoidal signal pretreatment module, be mounted on the sinusoidal signal output terminal of the rotary transformer on Double rotation axle equipment second turning axle, the other end of resistance R47 and the other end of resistance R48 are connected respectively the two ends of electric capacity C41; The two ends of resistance R46 connect the two ends of electric capacity C41 respectively, and connect the sinusoidal signal input end of the second rotary transformer decoding chip as the sinusoidal signal output terminal of the second sinusoidal signal pretreatment module
sinwith
sinL0port.
The present embodiment first excitation buffer circuit comprises the first circuit, second circuit and a LM224 chip; As shown in fig. 4 a, first circuit comprises resistance R49, rheochord RW1, resistance R50, resistance R51, rheochord RW2, resistance R52 and double-point double-throw switch S3, wherein double-point double-throw switch S3 comprises the first fixed contact, the second fixed contact, first group of moving contact and second group of moving contact, first fixed contact is connected with one of them moving contact in first group of moving contact by the first blade, and the second fixed contact is connected with one of them moving contact of second group of moving contact by the second blade; First rotary transformer decoding chip
eXCend is connected with one end of rheochord RW1 and one end of resistance R50 respectively by resistance R49, and the other end of rheochord RW1 and the other end of resistance R50 are connected respectively two moving contacts in first group of moving contact of double-point double-throw switch S3; One end that resistance R49 is connected with resistance R50 and a LM224 chip as shown in Figure 4 b
1IN-port connects, and double-point double-throw switch S3 first fixed contact is respectively with a LM224 chip
4IN+port and
1OUTport connects; First rotary transformer decoding chip
end is connected with one end of rheochord RW2 and one end of resistance R52 respectively by resistance R51, and the other end of rheochord RW2 and the other end of resistance R52 are connected respectively two moving contacts in second group of moving contact of double-point double-throw switch S3; One end that resistance R51 is connected with resistance R52 and a LM224 chip
2IN-port connects, and double-point double-throw switch S3 second fixed contact is respectively with a LM224 chip
3IN+port and
2OUTport connects.
As illustrated in fig. 4 c, second circuit comprises electric capacity C42, resistance R53, resistance R54, resistance R55, resistance R56, rheochord RW3 and single-pole single-throw switch (SPST) S4; Single-pole single-throw switch (SPST) S4 comprises fixed contact and two moving contacts, and wherein fixed contact is connected with one of them moving contact by blade; Direct supply+5V is connected with one end of electric capacity C42, resistance R54 and rheochord RW3 respectively by resistance R53, the other end ground connection of described electric capacity C42, resistance R54 and rheochord RW3, one end that resistance R53 is connected with electric capacity C42, resistance R54 and rheochord RW3 connects one of them moving contact of single-pole single-throw switch (SPST) S4, another moving contact of single-pole single-throw switch (SPST) S4 meets direct supply+5V by resistance R56 ground connection and by resistance R55, and the fixed contact of single-pole single-throw switch (SPST) S4 is respectively with a LM224 chip
1IN+port and
2IN+port connects.
As shown in figure 4d, a LM224 chip
3OUTport connects the input end of the first power amplification circuit, and the output terminal of the first power amplification circuit to connect a LM224 chip
3IN-port; As shown in fig 4e, a LM224 chip
4OUTport connects the input end of the second power amplification circuit, and the output terminal of the second power amplification circuit to connect a LM224 chip
4IN-port, the output terminal of the first power amplification circuit and the second power amplification circuit is respectively as the excitation signal output terminal of the first excitation buffer circuit.
The second excitation buffer circuit of the present embodiment comprises tertiary circuit, the 4th circuit and the 2nd LM224 chip; As shown in Figure 5 a, tertiary circuit comprises resistance R65, rheochord RW4, resistance R66, resistance R67, rheochord RW5, resistance R68 and double-point double-throw switch S5, wherein double-point double-throw switch S5 comprises the first fixed contact, the second fixed contact, first group of moving contact and second group of moving contact, first fixed contact is connected with one of them moving contact in first group of moving contact by the first blade, and the second fixed contact is connected with one of them moving contact of second group of moving contact by the second blade;
Second rotary transformer decoding chip
eXCend is connected with one end of rheochord RW4 and one end of resistance R66 respectively by resistance R65, and the other end of rheochord RW4 and the other end of resistance R66 are connected respectively two moving contacts in first group of moving contact of double-point double-throw switch S5; One end that resistance R65 is connected with resistance R66 and the 2nd LM224 chip as shown in Figure 5 b
1IN-port connects, and double-point double-throw switch S5 first fixed contact is respectively with the 2nd LM224 chip
4IN+port and
1OUTport connects;
Second rotary transformer decoding chip
end is connected with one end of rheochord RW5 and one end of resistance R68 respectively by resistance R67, and the other end of rheochord RW5 and the other end of resistance R68 are connected respectively two moving contacts in second group of moving contact of double-point double-throw switch S5; One end that described resistance R67 is connected with resistance R68 and the 2nd LM224 chip
2IN-port connects, and described double-point double-throw switch S5 second fixed contact is respectively with the 2nd LM224 chip
3IN+port and
2OUTport connects;
As shown in Figure 5 c, the 4th circuit comprises electric capacity C43, resistance R69, resistance R70, resistance R71, resistance R72, rheochord RW6 and single-pole single-throw switch (SPST) S6; Single-pole single-throw switch (SPST) S6 comprises fixed contact and two moving contacts, and wherein fixed contact is connected with one of them moving contact by blade; Direct supply+5V is connected with one end of electric capacity C43, resistance R70 and rheochord RW6 respectively by resistance R69, the other end ground connection of electric capacity C43, resistance R70 and rheochord RW6, one end that resistance R69 is connected with electric capacity C43, resistance R70 and rheochord RW6 connects one of them moving contact of single-pole single-throw (SPST) S6 switch, another moving contact of single-pole single-throw switch (SPST) S6 meets direct supply+5V by resistance R72 ground connection and by resistance R71, and the fixed contact of single-pole single-throw switch (SPST) S6 is respectively with the 2nd LM224 chip
1IN+port and
2IN+port connects;
As fig 5d, the 2nd LM224 chip
3OUTport connects the input end of the 3rd power amplification circuit, and the output terminal of the second power amplification circuit connects the 2nd LM224 chip
3IN-port; As depicted in fig. 5e, the 2nd LM224 chip
4OUTport connects the input end of the 4th power amplification circuit, and the output terminal of the second power amplification circuit connects the 2nd LM224 chip
4IN-port, the output terminal of the 3rd power amplification circuit and the 4th power amplification circuit is respectively as the excitation signal output terminal of the second excitation buffer circuit.
This is as shown in Fig. 4 d, 4e, 5d and 5e, and in embodiment, the first power amplification circuit, the second power amplification circuit and the 3rd power amplification circuit and the 4th power amplification circuit have included a NPN triode, a PNP triode and four resistance.The base stage of NPN triode passes through the first resistance of series connection and the base stage being connected PNP triode after the second resistance, the collector of NPN triode connects+12V direct supply, the emitter of NPN triode is by being connected the collector of PNP triode, the grounded emitter of PNP triode after series connection the 3rd resistance and the 4th resistance; One end that first resistance is connected with the second resistance is as the input end of power amplifier, and one end that the 3rd resistance is connected with the 4th resistance is as the output terminal of power amplifier.
The process that the present embodiment dual rotary transformer decode system gets relative position information between Double rotation axle equipment two turning axles is specific as follows:
(1), after dual rotary transformer decode system starts, the first rotary transformer decoding chip AD2S1200 and the second rotary transformer decoding chip AD2S1200 passes through
eXCwith
export high-frequency excitation signal, the excitation signal that first rotary transformer decoding chip AD2S1200 sends is supplied to the rotary transformer be arranged on Double rotation axle equipment first turning axle after the first excitation buffer circuit carries out power amplification, and the excitation signal that the second rotary transformer decoding chip AD2S1200 sends is supplied to the rotary transformer be arranged on Double rotation axle equipment second turning axle after the second excitation buffer circuit carries out power amplification.
(2) rotary transformer in rotating relatively rotates due to its rotor and stator, air gap between the two constantly change thus export just, cosine signal.The cosine and sine signal being arranged on the rotary transformer output on Double rotation axle equipment first turning axle is input in the first rotary transformer decoding chip AD2S1200 by the cosine and sine signal input end of the first rotary transformer decoding chip AD2S1200 after the first signal pre-processing circuit filtering process, and the cosine and sine signal being in like manner arranged on the rotary transformer output on Double rotation axle equipment second turning axle is input in the second rotary transformer decoding chip AD2S1200 by the cosine and sine signal input end of the second rotary transformer decoding chip AD2S1200 after secondary signal pre-process circuit filtering process.
The cosine and sine signal of (3) first rotary transformer decoding chip AD2S1200 chips to input is decoded the position and velocity information that obtain Double rotation axle equipment first turning axle, and sends position and velocity information to one-chip computer module STM32 chip by the first rotary transformer decoding chip AD2S1200 chip by SIP serial ports; The cosine and sine signal of the second rotary transformer decoding chip AD2S1200 to input is decoded the position and velocity information that obtain Double rotation axle equipment second turning axle, and sends position and velocity information to one-chip computer module STM32 chip by the second rotary transformer decoding chip AD2S1200 chip by SIP serial ports.
(4) after one-chip computer module STM32 chip gets decoded position signalling from the first rotary transformer decoding chip AD2S1200 chip and the second rotary transformer decoding chip AD2S1200 chip respectively by two SPI serial ports, one-chip computer module STM32 chip turns to according to Double rotation axle equipment first turning axle is relative with the reality of the second turning axle the synthesis two position datas being carried out to relative position, obtains the digitizing relative position information of Double rotation axle equipment two turning axles.As Double rotation axle equipment two turning axles turn to contrary then its relative position to be the addition of two rotary transformer location information datas.
When outside electric machinery control device requires to obtain digitized relative position information, the present embodiment is directly connected with external motor opertaing device by data output interface 12 such as the RS232 serial interface on it, and externally electric machinery control device provides digitized relative position information.
Embodiment 2
Present embodiment discloses a kind of dual rotary transformer decode system, the difference of the present embodiment system and embodiment 1 is only, as shown in Figure 6, in the present embodiment, wherein three I/O ports of one-chip computer module are connected with the direct output interface 11 of three-phase.In the present embodiment, dual rotary transformer decode system gets the process of the digitizing relative position information of Double rotation axle equipment two turning axles and identical in embodiment 1.One-chip computer module simulation incremental optical-electricity encoder in the present embodiment, the simulation of digitizing relative position information is become the output pulse signal of incremental optical-electricity encoder, and by three the I/O port output pulse signals be connected with the direct output interface 11 of above-mentioned three-phase in one-chip computer module, wherein export A phase, B phase and Z phase pulse signal respectively by three I/O ports.Wherein there is the phase differential of 90 ° in A, B phase.
The principle that in the present embodiment, digitized positional information simulation is become incremental optical-electricity encoder pulse signal form by one-chip computer module is as follows: according to the line number of the incremental optical-electricity encoder that will simulate, calculate corresponding corner representated by the recurrence interval, then relative position information data cast out minimum N position and get low 2 bit digital behind the N position that moves to right as agreement least significant bit (LSB).The level of size to the I/O mouth of main control singlechip module of least significant bit (LSB) sets high or drags down and be modeled to pulse according to a preconcerted arrangement.There is the phase differential of 90 ° in A, B phase because of incremental optical-electricity encoder, therefore, being divided into 4 stages a recurrence interval simulates, and such as, A phase output level is 0110, and B phase output level is 0011, and now A phase and B phase just create the phase differential of 90 °.Wherein for the simulation of Z phase signals, for the destination object having installed absolute type rotary transformer, the station-keeping data after its synthesis is also absolute position, therefore, directly can export the high level in 1/4th cycles in certain angular interval; For the destination object having installed multipair pole rotary transformer, station-keeping data after its synthesis is actually relative electrical angle, first relative electrical angle is converted into absolute relative position information by cumulative method, then carries out the simulation of incremental optical-electricity encoder pulse signal.
Require the positional information of input normal pulsed signal at outside electric machinery control device, the present embodiment is connected with external motor opertaing device by the direct output interface 11 of three-phase on it, and externally electric machinery control device provides the positional information of pulse signal.Because the I/O mouth output voltage of the present embodiment one-chip computer module STM32 chip is 3.3V, the pulse signal therefore exported by the direct output interface of three-phase supports the electric machinery control device of 5V Transistor-Transistor Logic level.
Digitizing relative position information can certainly be directly obtained by one-chip computer module in the present embodiment.
Embodiment 3
Present embodiment discloses a kind of dual rotary transformer decode system, the difference of the present embodiment system and embodiment 1 is only, as shown in Figure 7, in the present embodiment, wherein three I/O ports of one-chip computer module are connected to opener circuit 10, and I/O port PB1, PB2 of one-chip computer module STM32 chip are connected opener circuit 10 respectively with PB3 port in the present embodiment.
Opener circuit 10 output terminal of one-chip computer module three I/O ports is connected with a three-phase opener output interface 9, and every phase opener circuit output interface correspondence connects the output terminal of an opener circuit, is facilitated the connection of rear end equipment by three-phase opener output interface.As shown in Figure 7a, in the present embodiment, each opener circuit is made up of NPN triode and resistance, and wherein the base stage of NPN triode connects the I/O port of one-chip computer module, and grounded emitter, as the output terminal of opener circuit after collector contact resistance.
In the present embodiment, dual rotary transformer decode system gets the process of the digitizing relative position information of Double rotation axle equipment two turning axles and identical in embodiment 1.The present embodiment one-chip computer module is after the digitizing relative position information getting Double rotation axle equipment two turning axles, in the present embodiment, one-chip computer module simulates incremental optical-electricity encoder as embodiment 2, the simulation of digitizing relative position information is become the output pulse signal of incremental optical-electricity encoder, and by three the I/O port output pulse signals of one-chip computer module be connected with opener circuit, wherein by three I/O port PB1 of STM32 chip, PB2 and PB3 is corresponding respectively exports A phase, B phase and Z phase pulse signal, the A exported, B, Z three-phase pulse signal is input to the NPN transistor base of each opener circuit respectively.
The dual rotary transformer decode system of the present embodiment is applicable to the situation that electric machinery control device requires the positional information inputting opener type incremental optical-electricity encoder signal; As shown in Figure 7a, the signal of the output of the present embodiment opener circuit, when being input to electric machinery control device, needs the optic coupling element in electric machinery control device as illustrated in the drawing.In the present embodiment, STM32 single-chip microcomputer pin exports high level is 3.3V, and for A phase, when the pulse that the PB1 port of single-chip microcomputer STM32 chip exports is high level, the base voltage of triode QA is greater than 0.7V but triode ON.In the electric machinery control device that opener circuit output end connects, electric current flows through resistance R1, resistance R2, resistance R3, resistance R4 and QA as shown in Figure 7a from power supply VCC, and in the generation pressure drop at resistance R2 place, its size is V
r2=V
cCr
2/ (R
1+ R
2+ R
3+ R
4), thus making optocoupler work, on the right side of optocoupler, circuit produces high level; When the pulse that PB1 exports is low level, triode QA ends, and R2 no current passes through, the light-emitting component two ends no-voltage of optocoupler, circuit breaker on the right side of optocoupler and output low level.Open up by three of one-chip computer module I/O ports the electric machinery control device that three-phase pulse signal to be sent to rear end by collector in the present embodiment.
Digitizing relative position information can certainly be directly obtained by one-chip computer module in the present embodiment.
Embodiment 4
Present embodiment discloses a kind of dual rotary transformer decode system, the difference of the present embodiment system and embodiment 1 is only, as shown in Figure 8, wherein three I/O ports of the present embodiment are connected with single-ended transfer difference circuit 8, this single-ended transfer difference inside circuit is provided with slip and divides chip, and the output terminal of single-ended transfer difference circuit is connected with difference output interface 7.I/O port PB1, PB2 of one-chip computer module STM32 chip are connected the input end of single-ended transfer difference circuit with PB3 port in the present embodiment.
In the present embodiment, dual rotary transformer decode system gets the process of the digitizing relative position information of Double rotation axle equipment two turning axles and identical in embodiment 1, the present embodiment one-chip computer module is after the digitizing relative position information getting Double rotation axle equipment two turning axles, in the present embodiment, one-chip computer module simulates incremental optical-electricity encoder as embodiment 2, , the simulation of digitizing relative position information is become the output pulse signal of incremental optical-electricity encoder, and by three the I/O port PB1 of one-chip computer module be connected with single-ended transfer difference circuit, PB2 and PB3 divides output pulse signal, wherein by three I/O port PB1 of STM32 chip, PB2 and PB3 is corresponding respectively exports A, B, Z three-phase pulse signal.As shown in Figure 8 a, A, B, Z three-phase pulse signal that STM32 chip exports is input in single-ended transfer difference circuit, and the slip in single-ended transfer difference circuit divides chip respectively by the single-ended voltage signal V of input end
a, V
band V
zcorresponding difference is ± V
a, ± V
bwith ± V
z, wherein V
a, V
band V
zthe voltage of corresponding A, B, Z three-phase pulse signal respectively.
As shown in Figure 8 b, in the present embodiment, single-ended transfer difference circuit adopts 26LS31 chip to divide chip as slip.This chip has 4 slip subchannels, and the A pin input single-ended signal of each passage, Y pin can export the signal with A pin homophase, and Z pin can export the signal anti-phase with A pin.This embodiment adopts 1,2,4 three passage respectively A, B, Z three-phase pulse signal to be converted to A+, A-, B+, B-, Z+, Z-six road differential signal.Supply module provides 5V to power for it.Be difference output interface 7 that single-ended transfer difference circuit output end in the present embodiment connects as shown in Figure 8 c.
In the present embodiment, dual rotary transformer decode system is applicable to the incremental photo encoder signal of electric machinery control device requirement input is the situation that difference type exports.As shown in 8a in figure, the differential signal that electric machinery control device comprises with optic coupling element receives electrical equipment, and the differential signal that single-ended transfer difference circuit exports can be converted to one-channel signal by the differential receiver wherein in electric machinery control device.For A phase, when PB1 exports high level 3.3V, single-ended transfer difference circuit is converted into ± 3.3V.Differential line receiver in electric machinery control device can be converted into high-level single ended, and optocoupler ends because light-emitting component two ends are all high level, and on the right side of optocoupler, pulse signal is now judged as high level by circuit.When PB1 output low level, the differential line receiver in electric machinery control device exports and is all low level, optocoupler work, and on the right side of it, signal is now judged as low level by circuit.
Digitizing relative position information can certainly be directly obtained by one-chip computer module in the present embodiment.
Embodiment 5
Present embodiment discloses a kind of dual rotary transformer decode system, the present embodiment and above-described embodiment difference are, as shown in Figure 9, wherein three I/O ports PB1, PB2 and PB3 of the present embodiment one-chip computer module 13 are connected with the direct output interface 11 of three-phase, opener circuit 10 and single-ended transfer difference circuit 7.Namely the dual rotary transformer decode system of the present embodiment is obtained in conjunction with above-described embodiment 1 to embodiment 4.Wherein the output terminal of opener circuit 10 is provided with three-phase opener output interface 9, and the output terminal of single-ended transfer difference circuit 7 is provided with difference output interface 9, and these facilitate the connection of the various equipment in rear end by these interfaces.By wherein three I/O ports of the present embodiment one-chip computer module, in the present embodiment, to get the process of the digitizing relative position information of Double rotation axle equipment two turning axles identical with in embodiment 1 for dual rotary transformer decode system.The present embodiment one-chip computer module is after the digitizing relative position information getting Double rotation axle equipment two turning axles, in the present embodiment, one-chip computer module simulates incremental optical-electricity encoder as embodiment 2 to 4, the digitizing relative position information got is processed, the simulation of digitizing relative position information is become the output pulse signal of incremental optical-electricity encoder, be then sent to respectively in the direct output interface 11 of three-phase, opener circuit 10 and single-ended transfer difference circuit 7.Digitizing relative position information can certainly be directly obtained by one-chip computer module in the present embodiment.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1. a dual rotary transformer decode system, is characterized in that, comprises the first rotary transformer decoding circuit module, the second rotary transformer decoding circuit module and flush bonding processor module; The input end of described first rotary transformer decoding circuit module is connected with the rotary transformer output terminal be arranged on Double rotation axle equipment first turning axle, and the input end of described second rotary transformer decoding circuit module is connected with the rotary transformer output terminal be arranged on Double rotation axle equipment second turning axle; Described first rotary transformer decoding circuit module and the second rotary transformer decoding circuit module are by serial ports or parallel port and flush bonding processor model calling.
2. dual rotary transformer decode system according to claim 1, is characterized in that, wherein three I/O ports of described flush bonding processor module connect the direct output interface of three-phase.
3. dual rotary transformer decode system according to claim 1, is characterized in that, wherein three I/O ports of described flush bonding processor module connect opener circuit respectively.
4. dual rotary transformer decode system according to claim 3, it is characterized in that, described opener circuit is made up of NPN triode and resistance, wherein the base stage of NPN triode connects the I/O port of flush bonding processor module, grounded emitter, as the output terminal of opener circuit after collector contact resistance.
5. dual rotary transformer decode system according to claim 1, is characterized in that, wherein three I/O ports of described flush bonding processor module connect single-ended transfer difference circuit.
6. dual rotary transformer decode system according to claim 1, is characterized in that, described first rotary transformer decoding circuit module comprises the first rotary transformer decoding chip, the first excitation buffer circuit and the first signal pre-processing circuit; Described first rotary transformer decoding chip excitation signal output terminal is mounted on the rotary transformer on Double rotation axle equipment first turning axle by the first excitation buffer circuit, this rotary transformer cosine and sine signal output terminal connects the first rotary transformer decoding chip cosine and sine signal input end by the first signal pre-processing circuit;
Described second rotary transformer decoding circuit module comprises the second rotary transformer decoding chip, the second excitation buffer circuit and secondary signal pre-process circuit; Described second rotary transformer decoding chip excitation signal output terminal is mounted on the rotary transformer on Double rotation axle equipment second turning axle by the second excitation buffer circuit, this rotary transformer cosine and sine signal output terminal connects the second rotary transformer decoding chip cosine and sine signal input end by secondary signal pre-process circuit.
7. dual rotary transformer decode system according to claim 6, is characterized in that, described flush bonding processor module is one-chip computer module; Described first rotary transformer decoding chip and the second rotary transformer decoding chip are AD2S1200 chip, the excitation signal output terminal of the first rotary transformer decoding chip
eXCwith
be connected with the input end of the first excitation buffer circuit; The excitation signal output terminal of the second rotary transformer decoding chip
eXCwith
be connected with the input end of the second excitation buffer circuit.
8. dual rotary transformer decode system according to claim 7, is characterized in that, described first signal pre-processing circuit comprises the first sinusoidal signal pretreatment module and the first cosine signal pretreatment module;
First cosine signal pretreatment module comprises resistance R38, electric capacity C38, resistance R39 and resistance R37, wherein one end of resistance R38 and one end of resistance R39 are as the input port of the first cosine signal pretreatment module, be mounted on the cosine signal output terminal of the rotary transformer on Double rotation axle equipment first turning axle, the other end of resistance R38 and the other end of resistance R39 are connected respectively the two ends of electric capacity C38; The two ends of resistance R37 connect the two ends of electric capacity C38 respectively, and connect the cosine signal input end of the first rotary transformer decoding chip as the cosine signal output terminal of the first cosine signal pretreatment module
coswith
cosL0port;
First sinusoidal signal pretreatment module comprises resistance R41, electric capacity C39, resistance R42 and resistance R40, wherein one end of resistance R41 and one end of resistance R42 are as the input port of the first sinusoidal signal pretreatment module, be mounted on the sinusoidal signal output terminal of the rotary transformer on Double rotation axle equipment first turning axle, the other end of resistance R41 and the other end of resistance R42 are connected respectively the two ends of electric capacity C39; The two ends of resistance R40 connect the two ends of electric capacity C39 respectively, and connect the sinusoidal signal input end of the first rotary transformer decoding chip as the sinusoidal signal output terminal of the first sinusoidal signal pretreatment module
sinwith
sinL0port.
9. dual rotary transformer decode system according to claim 7, is characterized in that, described secondary signal pre-process circuit comprises the second sinusoidal signal pretreatment module and the second cosine signal pretreatment module;
Second cosine signal pretreatment module comprises resistance R44, electric capacity C40, resistance R45 and resistance R43, wherein one end of resistance R44 and one end of resistance R45 are as the input port of the second cosine signal pretreatment module, be mounted on the cosine signal output terminal of the rotary transformer on Double rotation axle equipment second turning axle, the other end of resistance R44 and the other end of resistance R45 are connected respectively the two ends of electric capacity C40; The two ends of resistance R43 connect the two ends of electric capacity C40 respectively, and connect the cosine signal input end of the second rotary transformer decoding chip as the cosine signal output terminal of the second cosine signal pretreatment module
coswith
cosL0port;
Second sinusoidal signal pretreatment module comprises resistance R47, electric capacity C41, resistance R48 and resistance R46, wherein one end of resistance R47 and one end of resistance R48 are as the input port of the second sinusoidal signal pretreatment module, be mounted on the sinusoidal signal output terminal of the rotary transformer on Double rotation axle equipment second turning axle, the other end of resistance R47 and the other end of resistance R48 are connected respectively the two ends of electric capacity C41; The two ends of resistance R46 connect the two ends of electric capacity C41 respectively, and connect the sinusoidal signal input end of the second rotary transformer decoding chip as the sinusoidal signal output terminal of the second sinusoidal signal pretreatment module
sinwith
sinL0port.
10. dual rotary transformer decode system according to claim 7, is characterized in that, described first excitation buffer circuit comprises the first circuit, second circuit and a LM224 chip; Described first circuit comprises resistance R49, rheochord RW1, resistance R50, resistance R51, rheochord RW2, resistance R52 and double-point double-throw switch S3, wherein double-point double-throw switch S3 comprises the first fixed contact, the second fixed contact, first group of moving contact and second group of moving contact, first fixed contact is connected with one of them moving contact in first group of moving contact by the first blade, and the second fixed contact is connected with one of them moving contact of second group of moving contact by the second blade;
Described first rotary transformer decoding chip
eXCend is connected with one end of rheochord RW1 and one end of resistance R50 respectively by resistance R49, and the other end of rheochord RW1 and the other end of resistance R50 are connected respectively two moving contacts in first group of moving contact of double-point double-throw switch S3; One end that described resistance R49 is connected with resistance R50 and a LM224 chip
1IN-port connects, and described double-point double-throw switch S3 first fixed contact is respectively with a LM224 chip
4IN+port and
1OUTport connects;
Described first rotary transformer decoding chip
end is connected with one end of rheochord RW2 and one end of resistance R52 respectively by resistance R51, and the other end of rheochord RW2 and the other end of resistance R52 are connected respectively two moving contacts in second group of moving contact of double-point double-throw switch S3; One end that described resistance R51 is connected with resistance R52 and a LM224 chip
2IN-port connects, and described double-point double-throw switch S3 second fixed contact is respectively with a LM224 chip
3IN+port and
2OUTport connects;
Described second circuit comprises electric capacity C42, resistance R53, resistance R54, resistance R55, resistance R56, rheochord RW3 and single-pole single-throw switch (SPST) S4; Single-pole single-throw switch (SPST) S4 comprises fixed contact and two moving contacts, and wherein fixed contact is connected with one of them moving contact by blade; Direct supply is connected with one end of electric capacity C42, resistance R54 and rheochord RW3 respectively by resistance R53, the other end ground connection of described electric capacity C42, resistance R54 and rheochord RW3, one end that resistance R53 is connected with electric capacity C42, resistance R54 and rheochord RW3 connects one of them moving contact of single-pole single-throw switch (SPST) S4, another moving contact of single-pole single-throw switch (SPST) S4 connects direct supply by resistance R56 ground connection and by resistance R55, and the fixed contact of single-pole single-throw switch (SPST) S4 is respectively with a LM224 chip
1IN+port and
2IN+port connects;
One LM224 chip
3OUTport connects the input end of the first power amplification circuit, and the output terminal of the first power amplification circuit to connect a LM224 chip
3IN-port, a LM224 chip
4OUTport connects the input end of the second power amplification circuit, and the output terminal of the second power amplification circuit to connect a LM224 chip
4IN-port, the output terminal of the first power amplification circuit and the second power amplification circuit is respectively as the excitation signal output terminal of the first excitation buffer circuit;
Described second excitation buffer circuit comprises tertiary circuit, the 4th circuit and the 2nd LM224 chip; Described tertiary circuit comprises resistance R65, rheochord RW4, resistance R66, resistance R67, rheochord RW5, resistance R68 and double-point double-throw switch S5, wherein double-point double-throw switch S5 comprises the first fixed contact, the second fixed contact, first group of moving contact and second group of moving contact, first fixed contact is connected with one of them moving contact in first group of moving contact by the first blade, and the second fixed contact is connected with one of them moving contact of second group of moving contact by the second blade;
Described second rotary transformer decoding chip
eXCend is connected with one end of rheochord RW4 and one end of resistance R66 respectively by resistance R65, and the other end of rheochord RW4 and the other end of resistance R66 are connected respectively two moving contacts in first group of moving contact of double-point double-throw switch S5; One end that described resistance R65 is connected with resistance R66 and the 2nd LM224 chip
1IN-port connects, and described double-point double-throw switch S5 first fixed contact is respectively with the 2nd LM224 chip
4IN+port and
1OUTport connects;
Described second rotary transformer decoding chip
end is connected with one end of rheochord RW5 and one end of resistance R68 respectively by resistance R67, and the other end of rheochord RW5 and the other end of resistance R68 are connected respectively two moving contacts in second group of moving contact of double-point double-throw switch S5; One end that described resistance R67 is connected with resistance R68 and the 2nd LM224 chip
2IN-port connects, and described double-point double-throw switch S5 second fixed contact is respectively with the 2nd LM224 chip
3IN+port and
2OUTport connects;
Described 4th circuit comprises electric capacity C43, resistance R69, resistance R70, resistance R71, resistance R72, rheochord RW6 and single-pole single-throw switch (SPST) S6; Single-pole single-throw switch (SPST) S6 comprises fixed contact and two moving contacts, and wherein fixed contact is connected with one of them moving contact by blade; Direct supply is connected with one end of electric capacity C43, resistance R70 and rheochord RW6 respectively by resistance R69, the other end ground connection of described electric capacity C43, resistance R70 and rheochord RW6, one end that resistance R69 is connected with electric capacity C43, resistance R70 and rheochord RW6 connects one of them moving contact of single-pole single-throw (SPST) S6 switch, another moving contact of single-pole single-throw switch (SPST) S6 connects direct supply by resistance R72 ground connection and by resistance R71, and the fixed contact of single-pole single-throw switch (SPST) S6 is respectively with the 2nd LM224 chip
1IN+port and
2IN+port connects;
2nd LM224 chip
3OUTport connects the input end of the 3rd power amplification circuit, and the output terminal of the second power amplification circuit connects the 2nd LM224 chip
3IN-port, the 2nd LM224 chip
4OUTport connects the input end of the 4th power amplification circuit, and the output terminal of the second power amplification circuit connects the 2nd LM224 chip
4IN-port, the output terminal of the 3rd power amplification circuit and the 4th power amplification circuit is respectively as the excitation signal output terminal of the second excitation buffer circuit.
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|---|---|---|---|
| CN201420846190.4U CN204373669U (en) | 2014-12-25 | 2014-12-25 | A kind of dual rotary transformer decode system |
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613990A (en) * | 2014-12-25 | 2015-05-13 | 华南理工大学 | Double-rotation transformer decoding system and method |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613990A (en) * | 2014-12-25 | 2015-05-13 | 华南理工大学 | Double-rotation transformer decoding system and method |
| CN104613990B (en) * | 2014-12-25 | 2017-04-19 | 华南理工大学 | Double-rotation transformer decoding system and method |
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Granted publication date: 20150603 Termination date: 20171225 |