CN206208192U - When grid shaft angle detecting system - Google Patents
When grid shaft angle detecting system Download PDFInfo
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- CN206208192U CN206208192U CN201621301497.1U CN201621301497U CN206208192U CN 206208192 U CN206208192 U CN 206208192U CN 201621301497 U CN201621301497 U CN 201621301497U CN 206208192 U CN206208192 U CN 206208192U
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Abstract
The utility model provide it is a kind of when grid shaft angle detecting system, including when grid shaft angle rotary transformer, control unit, pumping signal generating unit, induced signal input block and output unit；Described control unit is connected with pumping signal generating unit, the output end of the pumping signal generating unit with when grid shaft angle rotary transformer excitation coil be connected, the input of the induced signal input block with when grid shaft angle rotary transformer induction coil be connected, the output end of induced signal input block is connected with control unit, described control unit is connected with output unit, by said structure, the reliability and stability of detecting system can be effectively improved, and greatly improve the accuracy of detection for shaft angle, so as to be beneficial to Industry Control, and system architecture is simple, it is with low cost, and beneficial to integrated, miniaturization.
Description
Technical field
The utility model is related to a kind of angle detection system, more particularly to grid shaft angle detecting system when a kind of.
Background technology
In Industry Control, detected for the anglec of rotation of slewing and completed to the control of slewing extremely
It is important, in the prior art, there is following defect for the shaft angle detection of slewing：First, existing shaft angle testing equipment is general
Store-through is in the poor problem of accuracy of detection, so that for final system control is inaccurate, influence is produced；Secondly, shaft angle testing equipment
Existence and stability, poor reliability, so as to influence the control of slewing.
It is, therefore, desirable to provide a kind of new shaft angle testing equipment, can effectively improve accuracy of detection, and can effectively carry
High reliability and stability, so that controlled device is accurately controlled, beneficial to industrial production.
Utility model content
In view of this, grid shaft angle detecting system when the purpose of this utility model is to provide a kind of, can effectively improve detection
Precision, and reliability and stability can be effectively improved, so that controlled device is accurately controlled, beneficial to industrial production.
The utility model provide it is a kind of when grid shaft angle detecting system, including when grid shaft angle rotary transformer, control unit,
Pumping signal generating unit, induced signal input block and output unit；
Described control unit is connected with pumping signal generating unit, the output end of the pumping signal generating unit with when grid
The excitation coil connection of shaft angle rotary transformer, the input of the induced signal input block with when grid shaft angle rotary transformer
Induction coil connection, the output end of induced signal input block is connected with control unit, described control unit and output unit
Connection.
Further, the pumping signal generating unit includes signal generator, DAC change-over circuits and power amplification electricity
Road, the signal generator includes four signal outputs and a reference signal delivery outlet, the sine of the signal generator
Signal output is connected with the input of DAC change-over circuits, and the output end of the DAC change-over circuits is defeated with power amplification circuit
Enter end connection, the output end of the power amplification circuit with when grid shaft angle rotary transformer excitation coil be connected.
Further, the induced signal input block includes filtering and amplifying circuit and shaping circuit, the amplification filtered electrical
The input on road with when grid shaft angle rotary transformer induction coil be connected, the output end of filtering and amplifying circuit and shaping circuit
Input is connected, and the output end of shaping circuit is connected with control unit.
Further, described control unit includes clock phase-locked loop loop circuit, angle value change-over circuit and phase detecting circuit,
The input of the phase detecting circuit connects respectively at the reference signal delivery outlet of signal generator and the output end of shaping circuit
Connect, the phase detecting circuit is also connected with clock phase-locked loop loop circuit, the input and phase-detection of the angular transition circuit
The output end connection of circuit, the control end of the angular transition circuit is connected with clock phase-locked loop loop circuit, the angular transition electricity
The output end on road is connected with output unit.
Further, the output unit include it is parallel turn serial circuit, SSI protocol control circuitries, SSI output interfaces,
RS422 protocol control circuitries and RS422 output interfaces；
The parallel input for turning serial circuit is connected with angular transition circuit output end, described to turn serial circuit parallel
Input of the output end respectively with SSI protocol control circuitries and RS422 protocol control circuitries be connected, the SSI protocol integrated test systems
The output end of circuit is connected with SSI output interfaces, and the output end of RS422 protocol control circuitries is connected with RS422 output interfaces.
The beneficial effects of the utility model：The when grid shaft angle detecting system of this practicality, can effectively improve detecting system
Reliability and stability, and the accuracy of detection for shaft angle is greatly improved, so as to be beneficial to Industry Control, and system architecture
Simply, it is with low cost, and beneficial to integrated, miniaturization.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and examples：
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the oscillogram of signal generator output of the present utility model.
Grid shaft angle rotary transformer exports signal waveforms after induced signal and shaping when Fig. 3 is of the present utility model.
Fig. 4 is phase detecting module of the present utility model than phase signals oscillogram.
The structural representation of grid shaft angle rotary transformer when Fig. 5 is of the present utility model.
Specific embodiment
Fig. 1 is structural representation of the present utility model, as illustrated, the utility model provide it is a kind of when the detection of grid shaft angles
System, including when grid shaft angle rotary transformer, control unit, pumping signal generating unit, induced signal input block and defeated
Go out unit；
Described control unit is connected with pumping signal generating unit, the output end of the pumping signal generating unit with when grid
The excitation coil connection of shaft angle rotary transformer, the input of the induced signal input block with when grid shaft angle rotary transformer
Induction coil connection, the output end of induced signal input block is connected with control unit, described control unit and output unit
Connection, by said structure, can effectively improve the reliability and stability of detecting system, and greatly improve for shaft angle
Accuracy of detection, so that it is beneficial to Industry Control, and system architecture is simple, and it is with low cost, and beneficial to integrated, miniaturization；Its
In, when grid shaft angle rotary transformer using based on when grid principle electric field sensor, including stator and rotor, wherein, stator
Excitation coil is provided with, induction coil is provided with rotor, wherein induction coil has two groups, single pair of pole induction coil and many
To pole induction coil, multipair pole induction coil uses 32 pairs of pole induction coils.
Wherein, grid shaft angle rotary transformer instant grid axis angular displacement sensor when, the increment type angular displacement sensor bag
Stator (1,1a) and rotor (2,2a) are included, the rotor (2,2a) is coaxially disposed in stator (1,1a), the stator (1,1a)
On be wound with two groups of excitation windings (3,3a) and one group of sensing winding 4, between having between the stator (1,1a) and rotor (2,2a)
Gap；Wherein, it is sinusoidal excitation winding that is two groups of excitation winding input signal phases differ 90 ° to encourage one group of winding, separately
One group is that cosine encourages winding, as shown in figure 1, it is axial schematic cross-sectional view of the present utility model, stator 1 and rotor 2 that Fig. 1 is actual
One incremental time-grating angular displacement sensor of composition, stator 1a and rotor 2a constitutes an incremental time-grating angular displacement sensor；
Sinusoidal excitation winding and cosine connect input phase when winding works and differ 90 ° and frequency identical pumping signal, two
The sensing winding of individual incremental time-grating angular displacement sensor induces two voltage signals, and the difference of two voltage signals is contained
Detected absolute angular position information；Wherein, the stator (1,1a) is provided with stator tooth 5, excitation winding (3,3a)
Stator tooth 5 is may be contained within sensing winding 4, described two excitations winding (3,3a) are the reverse series connection structure in interval, the sensing
Winding 4 be by the reverse series connection structure of tooth, as shown in figure 5, excitation winding be in winding process across two structures of tooth, if from
Excitation winding from the tooth of the initial coiling of coiling be No. 1 tooth, then No. 1 and No. 2 teeth be it is positive, No. 3 and No. 4 teeth be it is reverse, i.e.,
For interval is reverse；The rotor (2,2a) is provided with rotor tooth 6, and rotor slot 7 is formed between the tooth of two neighboring rotor 6, described fixed
The facewidth of sub- tooth 5 and the width of rotor slot 7 are equal, and rotor turns over the time used by a tooth pitch for rotor tooth for sensing winding is exported
Induced signal a period of change, on same increment type angular displacement sensor：The stator tooth 5 and rotor slot 7
Width is equal, and the rotor tooth 6 is equal with the width of rotor slot 7.
In the present embodiment, the pumping signal generating unit includes signal generator, DAC change-over circuits and power amplification
Circuit, the signal generator includes four signal outputs and a reference signal delivery outlet, and the signal generator is just
String signal delivery outlet is connected with the input of DAC change-over circuits, output end and the power amplification circuit of the DAC change-over circuits
Input is connected, the output end of the power amplification circuit with when grid shaft angle rotary transformer excitation coil be connected, signal is sent out
Four sinusoidal signals produced by raw device are data signal, and phase difference 90 °, i.e. sin ,-sin, cos per signal all the way
And-cos signals, wherein, sin and-sin signals are represented with A and-A in Fig. 2, cos and-cos signals are represented with B and-B, then
Sinusoidal data signal is converted to by analog sinus signals by DAC change-over circuits, by being input into after the effect of power amplification circuit
To the excitation coil of stator, by this structure, grid shaft angle rotary transformer carries out angle detection, stability when can be beneficial to
Height, wherein, the reference signal produced by signal generator is square-wave signal, wherein, the square-wave signal is produced with signal generator
Raw phase is 0 ° of the same same phase of frequency of sinusoidal signal, and wherein signal generator is based on DDS signal generator.
In the present embodiment, the induced signal input block includes filtering and amplifying circuit and shaping circuit, the amplification filter
The input of wave circuit with when grid shaft angle rotary transformer induction coil be connected, the output end of filtering and amplifying circuit and shaping electricity
The input connection on road, the output end of shaping circuit is connected with control unit, because the induction coil of rotor has two groups, because
This, filtering and amplifying circuit and shaping circuit treatment after, output two-way induced signal to control unit, i.e. single pair of pole induced signal with
Multipair pole induced signal, shaping circuit is used for analog signal conversion digital signal, as shown in figure 3, when signal A and signal-A is
Single pair of level induced signal in grid shaft angle rotary transformer, by filtering and amplifying circuit and shaping circuit, amplification is synthesized all the way
When grid induced signal SQ1；And：Single pair of level induced signal when signal B and signal-B is in grid shaft angle rotary transformer, passes through
Filtering and amplifying circuit and shaping circuit, grid induced signal SQ2 when amplification is synthesized all the way.
In the present embodiment, described control unit includes clock phase-locked loop loop circuit, angle value change-over circuit and phase-detection
Circuit, the reference signal delivery outlet and the output of shaping circuit of the input of the phase detecting circuit respectively at signal generator
End connection, the phase detecting circuit is also connected with clock phase-locked loop loop circuit, the input and phase of the angular transition circuit
The output end connection of circuit is detected, the control end of the angular transition circuit is connected with clock phase-locked loop loop circuit, and the angle turns
The output end for changing circuit is connected with output unit, wherein, clock phase-locked loop loop circuit is used to provide frequency multiplication and locked clock phase
Effect, effectively improves the accuracy of detection of whole system, wherein, phase detecting circuit is used to be processed two induced signals,
Draw two phase difference values of induced signal and export in angular transition circuit, phase detecting circuit can use existing electricity
Road, such as AD8302 chips, the angular transition circuit are used for according to two phase differences of induced signal, clock frequency and rotors
Relation to number of poles calculates absolute angle angle value and exports, wherein, angular transition circuit can use existing chip, such as ARM cores
Piece, wherein, in phase detecting circuit processing procedure than phase signals oscillogram, the reference pulse signal that signal generator is produced is
One with pumping signal sin with the ratio phase signals of square-wave signal square and single pair of grade of pulse signal of frequency same-phase for XF1 and
The ratio phase signals of multipair level pulse signal are XF2, are then finely divided counting to signal XF1 and signal XF2, draw phase difference.
In the present embodiment, the output unit includes that the parallel serial circuit, SSI protocol control circuitries, SSI outputs of turning connects
Mouth, RS422 protocol control circuitries and RS422 output interfaces；
The parallel input for turning serial circuit is connected with angular transition circuit output end, described to turn serial circuit parallel
Input of the output end respectively with SSI protocol control circuitries and RS422 protocol control circuitries be connected, the SSI protocol integrated test systems
The output end of circuit is connected with SSI output interfaces, and the output end of RS422 protocol control circuitries is connected with RS422 output interfaces, leads to
Said structure is crossed, the angle value signal of angular transition circuit output can be changed and be exported the equipment such as host computer, just
In the output of angle value, wherein, serial circuit, SSI protocol control circuitries and RS422 protocol control circuitries are turned parallel using existing
Some circuits, not in this to go forth.
Finally illustrate, above example is only used to illustrate the technical solution of the utility model and unrestricted, although ginseng
The utility model has been described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, without deviating from the objective and model of technical solutions of the utility model
Enclose, it all should cover in the middle of right of the present utility model.
Claims (5)
1. grid shaft angle detecting system when a kind of, it is characterised in that：Including when grid shaft angle rotary transformer, control unit, excitation letter
Number generating unit, induced signal input block and output unit；
Described control unit is connected with pumping signal generating unit, the output end of the pumping signal generating unit with when grid shaft angle
The excitation coil connection of rotary transformer, the input of the induced signal input block with when grid shaft angle rotary transformer sense
Coil is answered to connect, the output end of induced signal input block is connected with control unit, and described control unit is connected with output unit.
2. grid shaft angle detecting system when according to claim 1, it is characterised in that：The pumping signal generating unit includes letter
Number generator, DAC change-over circuits and power amplification circuit, the signal generator include four signal outputs and a base
Calibration signal delivery outlet, the sinusoidal signal delivery outlet of the signal generator is connected with the input of DAC change-over circuits, the DAC
The output end of change-over circuit is connected with the input of power amplification circuit, the output end of the power amplification circuit with when grid shaft angle
The excitation coil connection of rotary transformer.
3. grid shaft angle detecting system when according to claim 2, it is characterised in that：The induced signal input block includes putting
Big filter circuit and shaping circuit, the input of the filtering and amplifying circuit with when grid shaft angle rotary transformer induction coil connect
Connect, the output end of filtering and amplifying circuit is connected with the input of shaping circuit, the output end of shaping circuit is connected with control unit.
4. grid shaft angle detecting system when according to claim 3, it is characterised in that：Described control unit includes clock phase-locked loop
Circuit, angle value change-over circuit and phase detecting circuit, the input of the phase detecting circuit is respectively at signal generator
Reference signal delivery outlet and shaping circuit output end connection, the phase detecting circuit also with clock phase-locked loop loop circuit connect
Connect, the input of the angular transition circuit is connected with the output end of phase detecting circuit, the control of the angular transition circuit
End is connected with clock phase-locked loop loop circuit, and the output end of the angular transition circuit is connected with output unit.
5. grid shaft angle detecting system when according to claim 4, it is characterised in that：The output unit includes parallel turning serially
Circuit, SSI protocol control circuitries, SSI output interfaces, RS422 protocol control circuitries and RS422 output interfaces；
The parallel input for turning serial circuit is connected with angular transition circuit output end, described to turn the defeated of serial circuit parallel
Go out input of the end respectively with SSI protocol control circuitries and RS422 protocol control circuitries to be connected, the SSI protocol control circuitries
Output end be connected with SSI output interfaces, the output end of RS422 protocol control circuitries is connected with RS422 output interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301497.1U CN206208192U (en) | 2016-11-30 | 2016-11-30 | When grid shaft angle detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301497.1U CN206208192U (en) | 2016-11-30 | 2016-11-30 | When grid shaft angle detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206208192U true CN206208192U (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621301497.1U Active CN206208192U (en) | 2016-11-30 | 2016-11-30 | When grid shaft angle detecting system |
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| Country | Link |
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| CN (1) | CN206208192U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453555A (en) * | 2017-09-12 | 2017-12-08 | 重庆中电天时精密装备技术有限公司 | Absolute angular position sensor and its detecting system |
-
2016
- 2016-11-30 CN CN201621301497.1U patent/CN206208192U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453555A (en) * | 2017-09-12 | 2017-12-08 | 重庆中电天时精密装备技术有限公司 | Absolute angular position sensor and its detecting system |
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