CN202885776U

CN202885776U - Angle detector for multipolar revolver

Info

Publication number: CN202885776U
Application number: CN2012204979648U
Authority: CN
Inventors: 杜万青; 李临; 陈生奇; 樊新会
Original assignee: 717th Research Institute of CSIC
Current assignee: 717th Research Institute of CSIC
Priority date: 2012-09-26
Filing date: 2012-09-26
Publication date: 2013-04-17
Anticipated expiration: 2022-09-26

Abstract

The utility model provides an angle detector for a multipolar revolver, which comprises an excitation power supply module, a low-voltage power supply module, an angle measuring module and a data display module. The excitation power supply module and the low-voltage power supply module provide an excitation power supply and a low-voltage power supply respectively. The angle measuring module comprises a first A/D conversion module used for decoding resolving signals output by the one-speed unit of the revolver into corresponding digital values, a second A/D conversion module used for decoding resolving signals output by the high-speed unit of the revolver into corresponding digital values, a CPLD module used for performing the error correction and data combination operation on the above decoded digital value to obtain an angle value, and a self-checking module used for simulating the generation of sinusoidal signals by the resolver and transmitting the signals to the CPLD module so as to output a self-checking value. The angle detector can be used for visually displaying the angle of a revolver and also has the self-checking function.

Description

The multipole varied angle detector that revolves

Technical field

The utility model belongs to rotary transformer angle measurement display technique field, is specifically related to a kind of multipole angle display circuit system of revolving change that is applied to.

Background technology

Rotary transformer is a kind of electromagnetic sensor, is used for measuring rotating shaft angular travel and the angular velocity of rotating object, and it is comprised of stator and rotor.Wherein stator winding is accepted field voltage as the former limit of transformer, and the rotor winding obtains induced voltage as the secondary of transformer by electromagnetic coupled.In order to improve measuring accuracy, adopt two speed resolver.Two speed resolver employing single-phase stator is excitatory, two-phase stator induction output.After field winding adds excitation voltage Uref, in the stator winding of thick axle, induce sine and cosine voltage U c-sin, Uc-cos also induces sine and cosine voltage U f-sin, Uf-cos in the stator winding of smart axle.This two paths of signals just can draw the angle value of thick machine and smart machine through the phase mode number conversion (A/D) of suitable precision.

Rotary transformer is used for optoelectronic device motion servo control system, and as sensing and the measuring sensor of angle position, its angle measurement accuracy has a significant impact its tracking accuracy tool.And do not have the instrument that can direct-detection revolves varied angle to exist on the market.Patent No. CN201655521U " universal rotating transformer decoding device and system " also just introduces modular converter realization and frequency splitting technology that one pole revolves change, can not be directly used in the demonstration of revolving varied angle.Flexible can not satisfy with demonstration for multipole the revolving of multiple number of pole-pairs.Only the sport technique segments such as frequency division are described, also do not introduce display format and mode.

And existing patent or paper all are that single module such as display board, low-tension supply, high-frequency excitation power supply and angular transition are introduced separately, do not have directly to show the introduction of apparatus that revolves varied angle.Therefore, because the many disadvantages of above-mentioned prior art does not still have a kind of method can directly effectively show the instrument that revolves varied angle so far.

The utility model content

The technical problems to be solved in the utility model is: a kind of multipole varied angle detector that revolves is provided, can intuitively shows the angle of revolving change, and have the System self-test function.

The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: the multipole varied angle detector that revolves, it is characterized in that: it comprises excitation power supply module, low-tension supply module, Angle Measurement Module and data disaply moudle, the excitation power supply module is connected with Angle Measurement Module with institute survey multipolar resolver provides excitation power supply, and the low-tension supply module is connected with data disaply moudle with Angle Measurement Module provides low-tension supply;

Described Angle Measurement Module comprises: be used for the thick machine of rotary transformer is revolved the A/D modular converter that varying signal is decoded as corresponding digital quantity, be used for rotary transformer essence machine is revolved the 2nd A/D modular converter that varying signal is decoded as corresponding digital quantity, for decoded digital quantity being carried out the CPLD(Complex Programable Logic Device that Error-adjusting and data are combined into angle value, CPLD) module, and be used for simulating the selftest module that the change sinusoidal signal is revolved in generation; Wherein the input end of an A/D modular converter and an A/D modular converter revolves the varying signal output terminal and is connected machine and revolves the varying signal output terminal and be connected with the thick machine of multipolar resolver respectively, and the input end of an A/D modular converter and an A/D modular converter also is connected with the output terminal of selftest module; The feedback end of selftest module is connected with the CPLD module; The output terminal of the one A/D modular converter and an A/D modular converter is connected with the CPLD module respectively, and the output terminal of CPLD module is connected with described data disaply moudle.

Press such scheme, described excitation power supply module comprises rectification circuit, filtering circuit, d-c transformer, 400Hz signal source and the power amplifier that connects in turn.

Press such scheme, described low-tension supply module comprises rectification circuit, filtering circuit and the d-c transformer that connects in turn.

Press such scheme, described data disaply moudle comprises parallel port data cache module, microcontroller processing unit, Serial Control module, LED driver module and the LED display module that connects in turn.

The beneficial effects of the utility model are:

1, the utility model adopts two A/D modular converters respectively the thick machine of multipolar resolver to be revolved varying signal and smart machine to revolve varying signal to carry out Collect conversion be binary digital quantity, then in CPLD, digital quantity is carried out Error-adjusting and data combination, obtain the scale-of-two angle value, the form of tabling look-up degree of being converted to, minute, second and 0.X second by segmentation directly shows the multipole varied angle value of revolving, two A/D modular converters are selected high precision angle A/D chip, can show the highest angle value that can reach 20; The utility model has increased selftest module in the angular measurement module, when not connecing tested multipolar resolver, revolve the change sinusoidal signal by selftest module simulation generation and be input to the CPLD module, thereby output self check value, whether working properly by self check value inspection machine, thus the output valve mistake or the error that produce when avoiding owing to the equipment faults itself.

2, native system need not other power supply or module, the convenient use, and cost is low, and reliability is high.

Description of drawings

Fig. 1 is the structural representation of the utility model one embodiment.

Fig. 2 is the structural representation of Angle Measurement Module.

Fig. 3 is the theory diagram of low-tension supply module.

Fig. 4 is the theory diagram of excitation power supply module.

Fig. 5 is the theory diagram of data disaply moudle.

Fig. 6 is the circuit theory diagrams of selftest module.

Embodiment

Below in conjunction with embodiment and accompanying drawing the utility model is described further.

Fig. 1 is the structural representation of the utility model one embodiment, it comprises excitation power supply module, low-tension supply module, Angle Measurement Module and data disaply moudle, the excitation power supply module is connected with Angle Measurement Module with institute survey multipolar resolver provides excitation power supply, the low-tension supply module is connected with data disaply moudle with Angle Measurement Module provides low-tension supply, the input end of Angle Measurement Module is connected with the varying signal output terminal that revolves of institute's survey multipolar resolver, and the output terminal of Angle Measurement Module is connected with data disaply moudle.

Fig. 2 is the structural representation of Angle Measurement Module, Angle Measurement Module comprises: be used for the thick machine of rotary transformer is revolved the A/D modular converter that varying signal is decoded as corresponding digital quantity, be used for rotary transformer essence machine is revolved the 2nd A/D modular converter that varying signal is decoded as corresponding digital quantity, be used for that decoded digital quantity is carried out Error-adjusting and data are combined into the CPLD module of angle value, and be used for simulation and produce and revolve the selftest module that becomes sinusoidal signal; Wherein the input end of an A/D modular converter and an A/D modular converter revolves the varying signal output terminal and is connected machine and revolves the varying signal output terminal and be connected with the thick machine of multipolar resolver respectively, and the input end of an A/D modular converter and an A/D modular converter also is connected with the output terminal of selftest module; The feedback end of selftest module is connected with the CPLD module; The output terminal of the one A/D modular converter and an A/D modular converter is connected with the CPLD module respectively, and the output terminal of CPLD module is connected with described data disaply moudle.

Selftest module among Fig. 2 when the wire jumper of X16 is received 3 pin in the selftest module, starts self-checking function as shown in Figure 6.At this moment K1, two relay adhesives of K2 divide the simulation of extrusion to revolve the change sinusoidal signal at the interlaminated resistance two ends of R1, R2, three resistance of R3 and are input to slightly being proficient in of an A/D modular converter and the 2nd A/D modular converter, then output self check value after conversion.Number of pole-pairs can be selected, and the self check value output valve of different poles logarithm is different.X10 among the figure, X12, X13, X16 are jumper wire board, and N1 is CPLD.

Fig. 3 is the theory diagram of low-tension supply module, comprises the rectification circuit, filtering circuit and the d-c transformer that connect in turn.The low-tension supply module obtains non-stable DC voltage with the 220V alternating current of input behind rectifying and wave-filtering, send into d-c transformer, can obtain at the output terminal of d-c transformer required stable DC Voltage-output.Because the output of the waveform of power supply is had relatively high expectations to ripple, the present embodiment has added again the one-level filtration module in output.

Fig. 4 is the theory diagram of excitation power supply module, comprises the rectification circuit, filtering circuit, d-c transformer, 400Hz signal source and the power amplifier that connect in turn.The excitation power supply module obtains non-stable DC voltage with the 220V alternating current of input behind rectifying and wave-filtering, send into d-c transformer, can obtain at the output terminal of d-c transformer required ± 30V Voltage-output, after ± 30V voltage is sent into the medium frequency electric source plate, at first by the burning voltage about the 7V of a wien bridge circuit through producing 400Hz behind the self-oscillation, send into again power amplifier, after adjusting, obtain stable 26V alternating current output.

Fig. 5 is the theory diagram of data disaply moudle, comprises the parallel port data cache module, microcontroller processing unit, Serial Control module, LED driver module and the LED display module that connect in turn.Wherein microprocessor is selected 8 single-chip microcomputer 89C51, and the LED display module adopts simple and reliable charactron to show.During work, parallel data is delivered to 89C51 and is processed behind 74LS245, by string and conversion chip 74LS164 data-switching is become 8 LED segment encode data again, send at last demonstration.

Although in conjunction with specific embodiments the utility model has been done detailed description; but it is evident that; this does not constitute any limitation this; those of ordinary skill in the art can replace all technical equivalents things and their combinations according to the knowledge of grasping, and these all fall into the scope of the utility model protection.

Claims

1. the multipole varied angle detector that revolves, it is characterized in that: it comprises excitation power supply module, low-tension supply module, Angle Measurement Module and data disaply moudle, the excitation power supply module is connected with Angle Measurement Module with institute survey multipolar resolver provides excitation power supply, and the low-tension supply module is connected with data disaply moudle with Angle Measurement Module provides low-tension supply;

Described Angle Measurement Module comprises: be used for the thick machine of rotary transformer is revolved the A/D modular converter that varying signal is decoded as corresponding digital quantity, be used for rotary transformer essence machine is revolved the 2nd A/D modular converter that varying signal is decoded as corresponding digital quantity, be used for that decoded digital quantity is carried out Error-adjusting and data are combined into the CPLD module of angle value, and be used for simulation and produce and revolve the selftest module that becomes sinusoidal signal; Wherein the input end of an A/D modular converter and an A/D modular converter revolves the varying signal output terminal and is connected machine and revolves the varying signal output terminal and be connected with the thick machine of multipolar resolver respectively, and the input end of an A/D modular converter and an A/D modular converter also is connected with the output terminal of selftest module; The feedback end of selftest module is connected with the CPLD module; The output terminal of the one A/D modular converter and an A/D modular converter is connected with the CPLD module respectively, and the output terminal of CPLD module is connected with described data disaply moudle.

2. the multipole varied angle detector that revolves according to claim 1 is characterized in that: described excitation power supply module comprises rectification circuit, filtering circuit, d-c transformer, 400Hz signal source and the power amplifier that connects in turn.

3. the multipole varied angle detector that revolves according to claim 1 is characterized in that: described low-tension supply module comprises rectification circuit, filtering circuit and the d-c transformer that connects in turn.

4. the multipole varied angle detector that revolves according to claim 1 is characterized in that: described data disaply moudle comprises parallel port data cache module, microcontroller processing unit, Serial Control module, LED driver module and the LED display module that connects in turn.