CN103884358B - A kind of digital closed-loop optic fiber gyroscope full loop detection and emulation test system - Google Patents
A kind of digital closed-loop optic fiber gyroscope full loop detection and emulation test system Download PDFInfo
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Abstract
The present invention discloses a kind of digital closed-loop optic fiber gyroscope full loop detection and emulation test system, comprises Optical system module, front amplification module, digital signal processing module, feedback module, communication module and ground inspection and emulation test system. Fiber optic gyro when not by turntable, can be realized full loop detection by the present invention; When not by angle vibration table and hang-up table, the unit bandwidth test of fiber optic gyro can be completed, test process avoids the condition restriction of conventional mechanical devices self; Can when do not increase any examine auxiliary circuit realize the kinetics copying of sub-system, avoid the parameter of auxiliary circuit to limit, complete complicated kinetics emulation. Present invention reduces the power consumption of product, weight, reduce cost, it is achieved that the miniaturization of product, low-cost design.
Description
Technical field
The invention belongs to inertia attitude sensor system technical field, it relates to a kind of digital closed-loop optic fiber gyroscope full loop detection and emulation test system.
Background technology
In recent years, due to prosperity micro-, moonlet market, the research of the inertia attitude sensor of low cost, miniaturization obtains fast development. Satellite product is in order to carry out ground physics emulation, and all units all must have ground checking functions, so needing to increase the auxiliary circuit realizing ground checking functions, increases the power consumption of product, size and weight.
Bandwidth is tested as a kind of important frequency response characteristic, is an important content of gyro performance test. Traditional method adopts the mechanical means such as hang-up table and angle vibration table to obtain frequency response curve, then calculates the bandwidth of fiber optic gyro according to the model of closed-loop fiber optic gyroscope. The restriction being subject to the mechanical means self-condition such as hang-up table and angle vibration table, cannot do the test of the limit to the bandwidth of fiber optic gyro.
The ground checking functions (emulation of fiber optic gyro kinetics) of gyro is the function that whole star is indispensable in ground test process. Traditional method is the excitation being applied electrical signal by ancillary hardware circuit to the closed loop system of gyro, thus make gyro export the angular velocity signal having certain rule, this signal is used for the motion of analog satellite, thus completes the kinetics simulating, verifying of ground whole star rail control algorithm. Due to the ancillary hardware circuit increased, just not re-using, it suffices to say that this part hardware circuit only just uses when ground test behind satellite heaven, this is for the waste that can't but be a kind of resource the satellite concerning weight demands very harshness.
In sum, if the measurement of said frequencies characteristic and ground checking functions can use software simulating, then the bandwidth of fiber optic gyro can be done limit test, it is possible to the testing expenses of the cost reducing product, the weight reducing product and reduction product.
Summary of the invention
The technical problem that the present invention solves is: overcome the deficiencies in the prior art, a kind of digital closed-loop optic fiber gyroscope full loop detection and emulation test system are provided, software engineering is utilized to reduce fiber optic gyro research and development, production, experimentation cost, can save and fall on the ground inspection auxiliary circuit, avoid using the mechanical means such as traditional hang-up table and angle vibration table simultaneously, not only can reduce product cost, reduce the physical dimension of product, and also simplify testing program, accelerate the development & production progress of product.
The technical scheme of the present invention is: a kind of digital closed-loop optic fiber gyroscope full loop detection and emulation test system, comprise Optical system module, front amplification module, digital signal processing module, feedback module, communication module and ground inspection and emulation test system;
Ground inspection and emulation test system send test instruction by communication module to digital signal processing module;
Digital signal processing module comprises data demodulation unit, digital filtering unit, modulation signal generation unit, Signal averaging unit and instructions parse unit; Wherein instructions parse unit receives the test instruction that ground is examined and emulation test system is sent by communication module, and this instruction is resolved, and obtains the fiber optic gyro angle rate signal in this instruction; Then this fiber optic gyro angle rate signal is sent to Signal averaging unit by instructions parse unit, the fiber optic gyro angle rate signal that the fiber optic gyro angle rate signal received and data demodulation unit are exported by Signal averaging unit and the digital square wave that modulation signal generation unit produces carry out superposing the modulation signal being formed and comprising fiber optic gyro angle rate signal, and this modulation signal is exported to feedback module, the digital square wave that wherein modulation signal generation unit produces is determined by the electric parameter of phase modulator;
Feedback module comprises driving circuit and D/A transmodulator, the modulation signal that D/A converter accepts digital signal processing module is exported by Signal averaging unit, and exports to Optical system module by driving circuit after being converted into simulating signal;
Optical system module comprises light source, coupling mechanism, phase modulator, fiber optic loop and photoelectric commutator, the optical signal that light source sends through coupler transfer to phase modulator, the optical signal received is divided into two-beam by phase modulator, this two-beam is modulated by the modulation signal that phase modulator sends over according to feedback module, this two-beam after modulation enters fiber optic loop and clockwise around fiber optic loop respectively, counterclockwise transmission, after this two-beam is transferred to phase modulator again from fiber optic loop, again by phase modulator modulation, after above-mentioned twice modulating action, two-beam produces at phase modulator separation/combination place to interfere, optical signal after this interference exports to photoelectric commutator by coupling mechanism, by photoelectric commutator the optical signal after this interference is converted to electrical signal and exports to front amplification module, this electrical signal comprises fiber optic gyro angle rate signal and modulation signal, this fiber optic gyro angle rate signal comprises the input angle rate signal of fiber optic gyro body and the fiber optic gyro angle rate signal in the test instruction that ground is examined and emulation test system sends,
Front amplification module comprises prime amplifier and A/D converter, prime amplifier exports to A/D converter after being amplified by the electrical signal that Optical system module exports, A/D converter exports to the data demodulation unit of digital signal processing module after the electrical signal after amplification is converted to numerary signal, the numerary signal received is carried out demodulation by the data demodulation unit of digital signal processing module, obtain fiber optic gyro angle rate signal, the Signal averaging unit that this fiber optic gyro angle rate signal one side exports to digital signal processing module carries out next and takes turns closed-loop control, exporting to digital filtering unit carries out filtering on the other hand, the fiber optic gyro angle rate signal obtained after filtering is examined and emulation test system by communication module with being sent to, ground inspection and emulation test system complete the detection of fiber optic gyro closed loop according to the fiber optic gyro angle rate signal received, bandwidth test and the emulation test of fiber optic gyro kinetics.
The test instruction that ground inspection and emulation test system are sent to digital signal processing module by communication module is made up of two bytes, and first character joint is instruction information, and the 2nd byte is fiber optic gyro angular rate information.
Examine describedly and emulation test system according to the fiber optic gyro angle rate signal received complete fiber optic gyro closed loop detection, bandwidth test and fiber optic gyro kinetics emulation test concrete mode be:
When fiber optic gyro being carried out closed loop and detects, ground inspection and emulation test system by communication module to the test instruction that digital signal processing module sends be fiber optic gyro closed loop detection instruction, ground inspection and emulation test system calculate the difference of the input angle rate signal of the fiber optic gyro angle rate signal that receives and fiber optic gyro body, and by judging that the consistence that the difference of above-mentioned two angle rate signals and fiber optic gyro closed loop detect the fiber optic gyro angle rate signal in instruction completes the closed loop on-line checkingi of fiber optic gyro;
When fiber optic gyro being carried out bandwidth and tests, ground inspection and emulation test system are fiber optic gyro bandwidth test instruction by communication module to the test instruction that digital signal processing module sends, and examine and emulation test system record sends the amplitude of fiber optic gyro angle rate signal in moment of instruction and instruction simultaneously; Ground inspection and emulation test system gather each angle rate signal that fiber optic gyro exports, and record the moment receiving each angle rate signal, by the bandwidth of formulae discovery fiber optic gyro;
When fiber optic gyro is carried out kinetics emulate time, ground inspection and emulation test system by communication module to the test instruction that digital signal processing module sends be fiber optic gyro kinetics emulation instruction; The angle rate signal that fiber optic gyro exports is gathered by ground inspection and emulation test system according to whole star control cycle, and this angle rate signal is introduced the input terminus of dynamic simulation system, and the calculating through On board computer completes the kinetics emulation of one-period.
When fiber optic gyro carrying out bandwidth and tests, the formula calculating fiber optic gyro bandwidth is as follows:
Wherein, l is fiber optic gyro bandwidth, t2For ground inspection and emulation test system receive the moment of the angle rate signal that fiber optic gyro exports, and the amplitude of the difference of the input angle rate signal of fiber optic gyro angle rate signal of receiving of this ground inspection and emulation test system and fiber optic gyro body in moment be examine and in fiber optic gyro bandwidth test instruction that emulation test system sends fiber optic gyro angle rate signal amplitude 95%, t1For ground inspection and emulation test system send the moment of fiber optic gyro bandwidth test instruction.
The present invention compared with prior art has following useful effect:
(1) the present invention takes full advantage of " numeral " advantage of digital closed-loop optic fiber gyroscope, it may also be useful to additional " digital quantity " carrys out the angular velocity signal of analog optical fiber gyro, it is possible to complete the full loop function self-inspection of fiber-optic gyroscope light path, circuit.
(2) the present invention realizes full loop detection and kinetics emulation by digital communication interface, and method simply is convenient to realize.
(3) the present invention can invariably examine the restriction of auxiliary circuit self-ability, completes more complicated physical simulation test.
(4) product is applied " digital actuation " by the mode of communication by the present invention, it is achieved that " online " measures and simulation circular frequency.
(5) method of the present invention to " digital actuation ", avoids self restriction of the tradition mechanical means such as hang-up table and angle vibration table, it is possible to complete the limit test of fiber optic gyro frequency response characteristic.
Accompanying drawing explanation
The detection of Fig. 1 digital closed-loop optic fiber gyroscope full loop and emulation test system functional block diagram;
Fig. 2 is full loop detection and emulation test system transport function block diagram;
Fig. 3 is digital closed-loop optic fiber gyroscope staircase waveform waveform diagram;
Fig. 4 is digital closed-loop optic fiber gyroscope phase differential waveform diagram.
Embodiment
In digital closed-loop optic fiber gyroscope, extraneous circular frequency, as input signal, causes phase differential between suitable, inverse two-beam. Staircase waveform, as feedback signal, is added on phase modulator, also causes the phase differential between two-beam, and phase differential and staircase waveform bench height are directly proportional, and provide by digital signal processing circuit. Required additional turning rate input signal is simulated, it is possible to realize the realization of fiber-optic gyroscope light path, the Function detection of circuit, the test of kinetic characteristic and kinetics copying easily with specific staircase waveform (sinusoidal or step).
In digital closed-loop optic fiber gyroscope, feedback signal and output signal are all the bench heights of the digital staircase calculated by digital control device. The detection of digital closed-loop optic fiber gyroscope full loop and emulation test system functional block diagram as shown in Figure 1, comprise Optical system module 100, front amplification module 200, digital signal processing module 300, feedback module 400, communication module 500 and ground inspection and emulation test system 600;
Ground inspection and emulation test system 600 send test instruction by communication module 500 to digital signal processing module 300.
Digital signal processing module 300 is made up of FPGA chip and its internal hardware algorithm, comprises data demodulation unit, digital filtering unit, modulation signal generation unit, Signal averaging unit and instructions parse unit; Wherein instructions parse unit receives the test instruction that ground is examined and emulation test system 600 is sent by communication module 500, and this instruction is resolved, and obtains the fiber optic gyro angle rate signal in this instruction; Then this fiber optic gyro angle rate signal is sent to Signal averaging unit by instructions parse unit, the fiber optic gyro angle rate signal that the fiber optic gyro angle rate signal received and data demodulation unit are exported by Signal averaging unit and the digital square wave that modulation signal generation unit produces carry out superposing the modulation signal being formed and comprising fiber optic gyro angle rate signal, and this modulation signal is exported to feedback module 400, the digital square wave that wherein modulation signal generation unit produces is determined by the electric parameter of phase modulator.
Feedback module 400 comprises driving circuit and D/A transmodulator, the modulation signal that D/A converter accepts digital signal processing module 300 is exported by Signal averaging unit, and exports to Optical system module 100 by driving circuit after being converted into simulating signal.
Optical system module 100 comprises light source, coupling mechanism, phase modulator, fiber optic loop and photoelectric commutator, the optical signal that light source sends through coupler transfer to phase modulator, the optical signal received is divided into two-beam by phase modulator, this two-beam is modulated by the modulation signal that phase modulator sends over according to feedback module 400, this two-beam after modulation enters fiber optic loop and clockwise around fiber optic loop respectively, counterclockwise transmission, fiber optic loop rotates under the input angular rate effect of fiber optic gyro body simultaneously, thus the input angular rate of fiber optic gyro body is added on this two-beam, after this two-beam is transferred to phase modulator again from fiber optic loop, the modulation signal again sended over according to next cycle feedback module 400 by phase modulator is modulated, after above-mentioned twice modulating action, two-beam produces at phase modulator separation/combination place to interfere, optical signal after this interference exports to photoelectric commutator by coupling mechanism, by photoelectric commutator this optical signal is converted to electrical signal and exports to front amplification module 200, this electrical signal comprises fiber optic gyro angle rate signal and modulation signal, this fiber optic gyro angle rate signal comprises the input angle rate signal of fiber optic gyro body and the fiber optic gyro angle rate signal in the test instruction that ground is examined and emulation test system 600 sends.
Front amplification module 200 comprises prime amplifier and A/D converter, prime amplifier exports to A/D converter after being amplified by the electrical signal that Optical system module 100 exports, A/D converter exports to the data demodulation unit of digital signal processing module 300 after the electrical signal after amplification is converted to numerary signal, the numerary signal received is carried out demodulation by the data demodulation unit of digital signal processing module 300, obtain fiber optic gyro angle rate signal, the Signal averaging unit that this fiber optic gyro angle rate signal one side exports to digital signal processing module 300 carries out next and takes turns closed-loop control, exporting to digital filtering unit carries out filtering on the other hand, the fiber optic gyro angle rate signal obtained after filtering is examined and emulation test system 600 by communication module 500 with being sent to, ground inspection and emulation test system 600 complete fiber optic gyro closed loop according to the test instruction sent and the fiber optic gyro angle rate signal that receives and detect, bandwidth test and the emulation test of fiber optic gyro kinetics.
Ground inspection and emulation test system 600 are by ground detection control case, computer, emulation algorithm composition, realize the detection of fiber optic gyro closed loop, the concrete mode of bandwidth test and the emulation test of fiber optic gyro kinetics is: when fiber optic gyro carrying out closed loop and detects, ground inspection and emulation test system 600 by communication module 500 to the test instruction that digital signal processing module 300 sends be fiber optic gyro closed loop detection instruction, containing the fiber optic gyro angle rate signal simulated in this instruction, ground inspection and emulation test system 600 calculate the difference of the input angle rate signal of fiber optic gyro angle rate signal and the fiber optic gyro body received, and the closed loop on-line checkingi of fiber optic gyro is completed by the consistence of the fiber optic gyro angle rate signal judged in the difference of above-mentioned two angle rate signals and the detection instruction of fiber optic gyro closed loop.
When fiber optic gyro being carried out bandwidth and tests, ground inspection and emulation test system 600 are fiber optic gyro bandwidth test instruction by communication module 500 to the test instruction that digital signal processing module 300 sends, containing the fiber optic gyro angle rate signal simulated in this instruction, inspection simultaneously and emulation test system 600 record the amplitude of fiber optic gyro angle rate signal in the moment (being accurate to second level, Millisecond, even Microsecond grade as required) and instruction sending instruction; Ground inspection and emulation test system 600 gather each angle rate signal that fiber optic gyro exports, and examine with recording and emulation test system 600 receives moment of each angle rate signal, by the bandwidth of formulae discovery fiber optic gyro.
The formula calculating fiber optic gyro bandwidth is as follows:
Wherein, l is fiber optic gyro bandwidth, t2For ground inspection and emulation test system 600 receive the moment of the angle rate signal that fiber optic gyro exports, and the amplitude of the difference of the input angle rate signal of fiber optic gyro angle rate signal of receiving of this ground inspection and emulation test system 600 and fiber optic gyro body in moment be examine and in fiber optic gyro bandwidth test instruction that emulation test system 600 sends fiber optic gyro angle rate signal amplitude 95%, t1For ground inspection and emulation test system 600 send the moment of fiber optic gyro bandwidth test instruction.
When fiber optic gyro being carried out kinetics and emulates, ground inspection and emulation test system 600 by communication module 500 to the test instruction that digital signal processing module 300 sends be fiber optic gyro kinetics emulation instruction, containing the fiber optic gyro angle rate signal simulated in this instruction, consistent with the angular rate that the topworks of statllite system produces; The angle rate signal that fiber optic gyro exports is gathered by ground inspection and emulation test system 600 according to whole star control cycle, and this angle rate signal is introduced the input terminus of dynamic simulation system, the calculating through On board computer completes the kinetics emulation of one-period.
The test instruction that ground inspection and emulation test system 600 are sent to digital signal processing module 300 by communication module 500 is made up of two bytes, and first character joint is instruction information, and the 2nd byte is fiber optic gyro angular rate information.
The detection of digital closed-loop optic fiber gyroscope full loop and emulation test system to realize principle as follows:
What the data demodulation unit of digital signal processing module 300 exported is the step amount of fiber optic gyro angular rate, to bench height cumulative obtain digital staircase before, add the fiber optic gyro angle rate signal in the test instruction that namely an external signal P(is examined by ground and emulation test system 600 is sent to digital signal processing module 300 by communication module 500 in addition), changing the bench height of staircase waveform, the digital square wave simultaneously produced with modulation signal generation unit carries out superposing and obtains new staircase waveform. Phase differential between the two-beam that staircase waveform causes is directly proportional to bench height, the phase difference �� that staircase waveform causesJT=����R+����P, wherein �� ��RIt is the phase differential that feedback amount causes, �� ��PIt it is the phase differential that external signal causes. Assume that input angular velocity is zero, i.e. �� ��S=0. When initially adding external signal P, the error signal after demodulation is not zero, and digital control device changes the size of feedback amount according to control algorithm, dynamically follows the tracks of external signal, until error is zero, i.e. and �� ��R=-����P, feedback amount can reflect the size of external signal. Can obtain the Output speed of fiber optic gyro through output module, by the analysis exporting data can obtain the dynamic individual features of fiber optic gyro, the output of fiber optic gyro can as the input signal of kinetics emulation.
As shown in Figure 2, external signal P (Z) represents the transport function block diagram of the gyrosystem after adding external signal in feedback amount. Make input angular velocity �� (Z)=0, it is possible to draw output signal DOUT(Z) transport function that is relative and external signal P (Z) is:
Make external signal P (Z)=0, it is possible to draw output signal DOUT(Z) transport function that is relative and input angular velocity �� (Z) is:
Contrast (1), with formula (2) it may be seen that the denominator of two formulas is completely identical, molecule only differsThe output that external signal causes and the output that input angular velocity causes are described, shape is completely identical, just a difference scale-up factor in amplitude(i.e. the scaled factor of gyro), the time has the delayed of one-period, this kind delayed can follow-up data process in be compensated. The visible signal by the circular frequency of superposed simulation in the feedback signal of phase modulator, energy equivalence turning rate input completely, it is achieved fiber optic gyro full loop detects, the test of kinetic characteristic and the realization of kinetics copying.
The principle of analog optical fiber gyro input angular velocity is described for step response, when testing the bandwidth of closed-loop fiber optic gyroscope, for obtaining step response curve, external signal should be the digital quantity of fixed size, the feedback amount that it is formed with forward path repeatedly adds mutually, the final analogue step ripple V formed after integrationJTT as shown in Figure 3, wherein solid line is V to () waveformJTT (), dotted line is VJT(t-��). Fig. 4 is the phase difference �� between the positive and negative two-beam that causes of staircase waveformJT, �� ��RIt is the phase differential that feedback amount causes, �� ��PIt it is the phase differential that external signal causes.
As identical in wished the output numerical value that the output that external signal causes causes with input angular velocity, then differ a scale-up factor therebetweenNamelyThis project is tested for step response, do not need to know the concrete numerical value of this scale-up factor, because according to automatic control theory and fiber optic gyro closed loop principle, as long as the amplitude of external signal is no more than the maximum angular acceleration of fiber optic gyro, the time of response that any external signal obtains should be consistent.
The detection of digital closed-loop optic fiber gyroscope full loop and emulation test system, it is possible to realize fiber optic gyro full loop detection function, it is possible to when not by turntable, the working order of fiber optic gyro is carried out functional detection; The condition restriction of conventional mechanical devices self can be avoided, complete the limit test of fiber optic gyro bandwidth, simplify unit bandwidth testing process; The ground checking functions that can realize, it is possible to when do not increase any examine auxiliary circuit realize the kinetics copying of sub-system, avoid the parameter of auxiliary circuit to limit, complete complicated kinetics emulation; Thus reduce power consumption, the weight of product, reduce cost, it is achieved that the miniaturization of product, low-cost design.
The above; the embodiment being only the best of the present invention, but protection scope of the present invention is not limited thereto, any is familiar with those skilled in the art in the technical scope that the present invention discloses; simple deduction or replace, all should be encompassed within protection scope of the present invention.
The content not being described in detail in specification sheets of the present invention belongs to the known technology of professional and technical personnel in the field.
Claims (4)
1. a digital closed-loop optic fiber gyroscope full loop detection and emulation test system, it is characterized in that: comprise Optical system module (100), front amplification module (200), digital signal processing module (300), feedback module (400), communication module (500) and ground inspection and emulation test system (600);
Ground inspection and emulation test system (600) send test instruction by communication module (500) to digital signal processing module (300);
Digital signal processing module (300) comprises data demodulation unit, digital filtering unit, modulation signal generation unit, Signal averaging unit and instructions parse unit; Wherein instructions parse unit receives the test instruction that ground is examined and emulation test system (600) is sent by communication module (500), and this instruction is resolved, and obtains the fiber optic gyro angle rate signal in this instruction; Then this fiber optic gyro angle rate signal is sent to Signal averaging unit by instructions parse unit, the fiber optic gyro angle rate signal that the fiber optic gyro angle rate signal received and data demodulation unit are exported by Signal averaging unit and the digital square wave that modulation signal generation unit produces carry out superposing the modulation signal being formed and comprising fiber optic gyro angle rate signal, and this modulation signal is exported to feedback module (400), the digital square wave that wherein modulation signal generation unit produces is determined by the electric parameter of phase modulator;
Feedback module (400) comprises driving circuit and D/A transmodulator, the modulation signal that D/A converter accepts digital signal processing module (300) is exported by Signal averaging unit, and export to Optical system module (100) by driving circuit after being converted into simulating signal;
Optical system module (100) comprises light source, coupling mechanism, phase modulator, fiber optic loop and photoelectric commutator, the optical signal that light source sends through coupler transfer to phase modulator, the optical signal received is divided into two-beam by phase modulator, this two-beam is modulated by the simulating signal that phase modulator sends over according to feedback module (400), this two-beam after modulation enters fiber optic loop and clockwise around fiber optic loop respectively, counterclockwise transmission, after this two-beam is transferred to phase modulator again from fiber optic loop, again by phase modulator modulation, after above-mentioned twice modulating action, two-beam produces at phase modulator separation/combination place to interfere, optical signal after this interference exports to photoelectric commutator by coupling mechanism, by photoelectric commutator the optical signal after this interference is converted to electrical signal and exports to front amplification module (200), this electrical signal comprises fiber optic gyro angle rate signal and modulation signal, this fiber optic gyro angle rate signal comprises the input angle rate signal of fiber optic gyro body and the fiber optic gyro angle rate signal in the test instruction that ground is examined and emulation test system (600) sends,
Front amplification module (200) comprises prime amplifier and A/D converter, prime amplifier exports to A/D converter after being amplified by the electrical signal that Optical system module (100) exports, A/D converter exports to the data demodulation unit of digital signal processing module (300) after the electrical signal after amplification is converted to numerary signal, the numerary signal received is carried out demodulation by the data demodulation unit of digital signal processing module (300), obtain fiber optic gyro angle rate signal, the Signal averaging unit that this fiber optic gyro angle rate signal one side exports to digital signal processing module (300) carries out next and takes turns closed-loop control, exporting to digital filtering unit carries out filtering on the other hand, the fiber optic gyro angle rate signal obtained after filtering is examined by communication module (500) and emulation test system (600) with being sent to, ground inspection and emulation test system (600) complete the detection of fiber optic gyro closed loop according to the fiber optic gyro angle rate signal received, bandwidth test and the emulation test of fiber optic gyro kinetics.
2. a kind of digital closed-loop optic fiber gyroscope full loop detection according to claim 1 and emulation test system, it is characterized in that: the test instruction that ground inspection and emulation test system (600) are sent to digital signal processing module (300) by communication module (500) is made up of two bytes, first character joint is instruction information, and the 2nd byte is fiber optic gyro angular rate information.
3. a kind of digital closed-loop optic fiber gyroscope full loop detection according to claim 1 and emulation test system, it is characterised in that: examine and concrete mode that emulation test system (600) completes the detection of fiber optic gyro closed loop, bandwidth test and the emulation test of fiber optic gyro kinetics according to the fiber optic gyro angle rate signal received is describedly:
When fiber optic gyro being carried out closed loop and detects, ground inspection and emulation test system (600) by communication module (500) to the test instruction that digital signal processing module (300) sends be fiber optic gyro closed loop detection instruction, ground inspection and emulation test system (600) calculate the difference of the input angle rate signal of fiber optic gyro angle rate signal and the fiber optic gyro body received, and the closed loop on-line checkingi of fiber optic gyro is completed by the consistence of the fiber optic gyro angle rate signal judged in the difference of above-mentioned two angle rate signals and the detection instruction of fiber optic gyro closed loop,
When fiber optic gyro being carried out bandwidth and tests, ground inspection and emulation test system (600) are fiber optic gyro bandwidth test instruction by communication module (500) to the test instruction that digital signal processing module (300) sends, and examine and emulation test system (600) records the amplitude of fiber optic gyro angle rate signal in the moment and instruction sending instruction simultaneously; Ground inspection and emulation test system (600) gather each angle rate signal that fiber optic gyro exports, and record the moment receiving each angle rate signal, by the bandwidth of formulae discovery fiber optic gyro;
When fiber optic gyro is carried out kinetics emulate time, ground inspection and emulation test system (600) by communication module (500) to the test instruction that digital signal processing module (300) sends be fiber optic gyro kinetics emulation instruction; The angle rate signal that fiber optic gyro exports is gathered by ground inspection and emulation test system (600) according to whole star control cycle, and this angle rate signal is introduced the input terminus of dynamic simulation system, the calculating through On board computer completes the kinetics emulation of one-period.
4. a kind of digital closed-loop optic fiber gyroscope full loop detection according to claim 3 and emulation test system, it is characterised in that: when fiber optic gyro carrying out bandwidth and tests, the formula calculating fiber optic gyro bandwidth is as follows:
Wherein, l is fiber optic gyro bandwidth, t2For ground inspection and emulation test system (600) receive the moment of the angle rate signal that fiber optic gyro exports, and the amplitude of the difference of the input angle rate signal of fiber optic gyro angle rate signal of receiving of this ground inspection and emulation test system (600) and fiber optic gyro body in moment be examine and in fiber optic gyro bandwidth test instruction that emulation test system (600) sends fiber optic gyro angle rate signal amplitude 95%, t1For ground inspection and emulation test system (600) send the moment of fiber optic gyro bandwidth test instruction.
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