CN204177962U - A kind of radar bearing angular measurement isolation change-over circuit - Google Patents
A kind of radar bearing angular measurement isolation change-over circuit Download PDFInfo
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- CN204177962U CN204177962U CN201420670009.9U CN201420670009U CN204177962U CN 204177962 U CN204177962 U CN 204177962U CN 201420670009 U CN201420670009 U CN 201420670009U CN 204177962 U CN204177962 U CN 204177962U
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- over circuit
- isolation change
- change
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Abstract
The utility model discloses a kind of radar bearing angular measurement isolation change-over circuit: the isolation change-over circuit comprising selsyn and be connected with its output terminal; Selsyn is made up of elementary excitation reference signal input coil, secondary three-phase modulations output line circle and magnet ring; Isolation change-over circuit is isolated change-over circuit by reference signal and cosine and sine signal and is formed; Reference signal isolation change-over circuit comprises excitation reference signal input coil and coil is in parallel successively therewith two voltage stabilizing diodes, operational amplifiers, and cosine and sine signal isolation change-over circuit comprises three-phase modulations output line circle and coil is in parallel successively therewith two voltage stabilizing diodes, operational amplifiers.The utility model adopts selsyn formula angular position pick up instrumentation radar position angle, has the ability of absolute position detection, and can work under comparatively rugged environment condition, and it is reasonable in design, reliability is high, measuring accuracy is high.
Description
Technical field
The utility model relates to radar monitoring control technology field, especially relates to a kind of radar bearing angular measurement isolation change-over circuit.
Background technology
Measurement of azimuth is the important channel of Large Radar equipment, various navigational system and some control system perception oneself states, and therefore measurement of azimuth systematic research is quite aobvious important.The position of radar measuring target adopts spherical coordinate system, and using radar location as true origin, the position of target is determined by oblique distance, position angle and the angle of pitch 3 coordinates.Wherein, radar is measuring the direction of target, must convert the Angle Position of the orientation of radar, pitching rotating shaft to computing machine or the utilizable corner data of other devices accurately export.
At present, in various servo-control system, the element as angular position pick up mainly contains incremental encoder and absolute type encoder etc.Although incremental encoder also can provide absolute position signalling, the precision of its signal limits by code channel number object; And absolute type encoder has higher requirement for working environment.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, and provide a kind of radar bearing angular measurement to isolate change-over circuit, it adopts selsyn formula angular position pick up instrumentation radar position angle.Selsyn is a kind of induction type motor synchronizing micromotor, compared with incremental encoder.Circuit of the present utility model has the ability of absolute position detection, and can work under comparatively rugged environment condition, and it is reasonable in design, reliability is high, measuring accuracy is high.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of radar bearing angular measurement isolation change-over circuit, is characterized in that: the isolation change-over circuit comprising selsyn and be connected with its output terminal; Described selsyn is made up of elementary excitation reference signal input coil, secondary three-phase modulations output line circle and magnet ring; Described isolation change-over circuit isolates change-over circuit by reference signal, sinusoidal signal isolates change-over circuit and cosine signal isolation change-over circuit forms; Described reference signal isolation change-over circuit comprises excitation reference signal input coil and coil is in parallel successively therewith two voltage stabilizing diodes, the first operational amplifier, described sinusoidal signal isolation change-over circuit comprises three-phase modulations output line circle and coil is in parallel successively therewith two voltage stabilizing diodes, the second operational amplifier, and described cosine signal isolation change-over circuit comprises three-phase modulations output line circle and coil is in parallel successively therewith two voltage stabilizing diodes, the 3rd operational amplifier.
Above-mentioned a kind of radar bearing angular measurement isolation change-over circuit, is characterized in that: described two voltage stabilizing diode reverse parallel connections.
Above-mentioned a kind of radar bearing angular measurement isolation change-over circuit, is characterized in that: described excitation reference signal input coil, be also connected in series with resistance between three-phase modulations output line circle and the voltage stabilizing diode in parallel with it.
Above-mentioned a kind of radar bearing angular measurement isolation change-over circuit, is characterized in that: the in-phase end of described first operational amplifier, the second operational amplifier and the 3rd operational amplifier is connected to its output terminal by resistance.
Above-mentioned a kind of radar bearing angular measurement isolation change-over circuit, is characterized in that: described selsyn is 115V by elementary excitation reference signal input coil both end voltage.
The utility model compared with prior art has the following advantages:
The utility model adopts selsyn formula angular position pick up instrumentation radar position angle.Selsyn is a kind of induction type motor synchronizing micromotor, compared with incremental encoder.Circuit of the present utility model has the ability of absolute position detection, and can work under comparatively rugged environment condition, and it is reasonable in design, reliability is high, measuring accuracy is high.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is selsyn of the present utility model isolation change-over circuit circuit theory diagrams;
Fig. 2 is selsyn structural representation of the present utility model.
Embodiment
As depicted in figs. 1 and 2, a kind of radar bearing angular measurement isolation change-over circuit, is characterized in that: the isolation change-over circuit comprising selsyn and be connected with its output terminal; Described selsyn is made up of elementary excitation reference signal input coil, secondary three-phase modulations output line circle and magnet ring; Described isolation change-over circuit isolates change-over circuit by reference signal, sinusoidal signal isolates change-over circuit and cosine signal isolation change-over circuit forms; Described reference signal isolation change-over circuit comprises excitation reference signal input coil and coil is in parallel successively therewith two voltage stabilizing diodes, the first operational amplifier, described sinusoidal signal isolation change-over circuit comprises three-phase modulations output line circle and coil is in parallel successively therewith two voltage stabilizing diodes, the second operational amplifier, and described cosine signal isolation change-over circuit comprises three-phase modulations output line circle and coil is in parallel successively therewith two voltage stabilizing diodes, the 3rd operational amplifier.
In the present embodiment, described two voltage stabilizing diode reverse parallel connections.
In the present embodiment, described excitation reference signal input coil, between three-phase modulations output line circle and the voltage stabilizing diode in parallel with it, be also connected in series with resistance.
In the present embodiment, the in-phase end of described first operational amplifier, the second operational amplifier and the 3rd operational amplifier is connected to its output terminal by resistance.
In the present embodiment, described selsyn is 115V by elementary excitation reference signal input coil both end voltage.
Suppose to add field voltage VR=Vmsint ω t in the rotor side of selsyn, then will induce the signal of same frequency in stator side:
VS1＝Vmsintωtsinθ；
VS2＝Vmsintωtsin(θ-120)；
VS3＝Vmsintωtsin(θ-240)；
In formula: θ is for rotor is relative to the corner (azimuth signal namely will surveyed) of stator.Like this, radar bearing angle shaft angle signal is converted to three-phase alternating current modulation signal VS1, VS2, VS3 by selsyn.With, by the S1 of three-phase alternating current modulation signal with isolation change-over circuit, S2 with S3 is connected, and excitation reference signal is inputted by RL and RH.Therefore, three-phase signal is after resistance step-down and transformer isolation, sinusoidal signal and cosine signal is converted to, i.e. Vx=KUmsint ω tsin α, Vy=KUmsint ω tcos α by electronics Scott (Scott) transformer circuit be made up of operational amplifier A 1 and A2.
In formula: Vx is sinusoidal signal; Vy is cosine signal; α is selsyn
Shaft angle; Um is excitation reference voltage amplitude; K is no-load voltage ratio; ω is pumping signal angular frequency.
Equally, reference signal is through resistance step-down, transformer isolation and operational amplifier paraphase.Because operational amplifier may produce low maladjustment voltage and drift, therefore in circuit, all resistance should select precision resistance, and substantially constant to ensure the three-phase signal amplitude proportional after reducing, electronics Scott Transformer will have enough conversion accuracies simultaneously.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (5)
1. a radar bearing angular measurement isolation change-over circuit, is characterized in that: the isolation change-over circuit comprising selsyn and be connected with its output terminal; Described selsyn is made up of elementary excitation reference signal input coil, secondary three-phase modulations output line circle and magnet ring; Described isolation change-over circuit isolates change-over circuit by reference signal, sinusoidal signal isolates change-over circuit and cosine signal isolation change-over circuit forms; Described reference signal isolation change-over circuit comprises excitation reference signal input coil and coil is in parallel successively therewith two voltage stabilizing diodes, the first operational amplifier, described sinusoidal signal isolation change-over circuit comprises three-phase modulations output line circle and coil is in parallel successively therewith two voltage stabilizing diodes, the second operational amplifier, and described cosine signal isolation change-over circuit comprises three-phase modulations output line circle and coil is in parallel successively therewith two voltage stabilizing diodes, the 3rd operational amplifier.
2., according to a kind of radar bearing angular measurement isolation change-over circuit according to claim 1, it is characterized in that: described two voltage stabilizing diode reverse parallel connections.
3. according to a kind of radar bearing angular measurement isolation change-over circuit according to claim 1, it is characterized in that: described excitation reference signal input coil, between three-phase modulations output line circle and the voltage stabilizing diode in parallel with it, be also connected in series with resistance.
4., according to a kind of radar bearing angular measurement isolation change-over circuit according to claim 1, it is characterized in that: the in-phase end of described first operational amplifier, the second operational amplifier and the 3rd operational amplifier is connected to its output terminal by resistance.
5., according to a kind of radar bearing angular measurement isolation change-over circuit according to claim 1, it is characterized in that: described selsyn is 115V by elementary excitation reference signal input coil both end voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670009.9U CN204177962U (en) | 2014-11-11 | 2014-11-11 | A kind of radar bearing angular measurement isolation change-over circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670009.9U CN204177962U (en) | 2014-11-11 | 2014-11-11 | A kind of radar bearing angular measurement isolation change-over circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204177962U true CN204177962U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420670009.9U Expired - Fee Related CN204177962U (en) | 2014-11-11 | 2014-11-11 | A kind of radar bearing angular measurement isolation change-over circuit |
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| Country | Link |
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| CN (1) | CN204177962U (en) |
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2014
- 2014-11-11 CN CN201420670009.9U patent/CN204177962U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20151111 |