80results about How to "High locking precision" patented technology

A locking device(20) includes a mounting plate(24) and a support plate(25), wherein the mounting plate (24)includes a first surface(241) and two first side walls(242) which are positioned oppositely; first lug bosses (243) are extended to two ends of the first face (241), which are positioned oppositely; inside walls of both the first lug bosses (243)are provided with the support plate(25) respectively; positions of two outside walls of the support plate(25) corresponding to the first sliding grooves (2430) are provided with the second sliding grooves (250) which match the first sliding grooves (2430); the first side walls(242) are provided with a receiving groove(244); the locking device further includes a sliding block(261); the sliding block is slidingly positioned in the receiving groove(244); the sliding block (261) includes the first side face (2611) near the bottom of the receiving groove(244); the first side face(2611) is extended to a clamping part(2641) in the direction near the bottom of the receiving groove. When the sliding block(261) is fixed in the second sliding groove(250), the support plate(25) is locked with the mounting plate(24) through the clamping part(2641). In addition, a cradle head using the locking device is provided. The locking device and the cradle head can be quickly adjusted to weight balance, so that the locking accuracy of quick release plates is improved, and the quick release plates have small volume and quick disassembly.

The invention provides an anti-stealing electricity analysis method based on a quantitative evaluation model sealing electricity suspicion analysis algorithm. The anti-stealing electricity analysis method is characterized by comprising the following steps of S1, collecting basic data; S2, estimating a basic data state; S3, calculating loss line of a zone area; S4, calculating a stealing electricity suspicion level of each user in a month under the zone area by employing the quantitative evaluation model sealing electricity suspicion analysis algorithm; and S5, locking a suspicion stealing electricity user. The anti-stealing electricity analysis method has the beneficial effects that the locking accuracy of the stealing electricity user in a low-voltage power supply zone area is improved, the marketing management line loss level is reduced, so that the working efficiency of an audit department is improved.

The invention discloses a small-size speed change control moment gyroscope, and belongs to the technical field of control moment gyroscopes. The small-size speed change control moment gyroscope comprises a high-speed component, a connection bracket and a low-speed component, wherein the high-speed component supplies constant angular momentum in a control moment gyroscope mode and outputs fine moment required by whole satellite attitude control in a flywheel mode; the connection bracket is connected with the high-speed component and the low-speed component and guarantees the orthogonal perpendicularity between the angular momentum direction and the axial direction of a framework; the low-speed component supports the high-speed component and the connection bracket and supplies a mounting interface for a whole satellite; in the control moment gyroscope mode, large moment which is required by fastmoving of the whole satellite and is also orthogonal to the angular momentum direction and the axial direction of the framework is generated; in the flywheel mode, the fine moment output by the high-speed component is transmitted to the whole satellite for the attitude control. The speed change control moment gyroscope disclosed by the invention realizes the high-precision framework locking, the minimization, the light weight and the high rigidity, and is suitable for the application to small quick satellites.

The invention relates to a loss allocation suspicion analysis-based anti-electricity stealing analysis method. The loss allocation suspicion analysis-based anti-electricity stealing analysis method is put forward based on analysis on different line loss and power consumption anomaly and by means of suspected power consumption calculation. With the loss allocation suspicion analysis-based anti-electricity stealing analysis method adopted, the electricity stealing behaviors of users are ultimately reflected by the anomaly of measured power consumption of the users. The objective of the invention is to approximately calculate power consumption of the users in a transformer area which are not measured actually so as to determine suspected power users. According to the loss allocation suspicion analysis-based anti-electricity stealing analysis method of the invention, line loss calculation is divided into statistical line loss calculation, theoretical line loss calculation and management line loss calculation; and calculation methods of different lines are put forward; loss-counted power consumption abnormal conditions are calculated in different aspects; suspected power consumption is analyzed; suspected power consumption is compared and distinguished according to a plurality of power consumption abnormal conditions, so that the suspected power consumption of the users can be analyzed quantitatively; a specific power consumption suspicion degree method is put forward; the suspicion degrees of the users are calculated; thresholds are screened based on the suspicion degrees; required target users are filtered out; and an investigation list is formed.

The invention discloses a double-closed loop locking technology-based resonant optical gyro. The double-closed loop locking technology-based resonant optical gyro comprises an optical system composed of a tunable laser, an optical shunt, two frequency shifters of a first frequency shifter and a second frequency shifter, two modulators, an optical resonant cavity and a photoelectric conversion module, and a processing circuit composed of a modulation-demodulation module and three feedback locking modules. Main components of the optical system comprise the tunable laser as a double-closed loop feedback terminal and the two frequency shifters. A first signal extracted by the modulation-demodulation module can respectively change frequency shift amounts of the tunable laser and the first frequency shifter through two of the threes feedback locking modules. A second signal extracted by the modulation-demodulation module can change a frequency shift amount of the second frequency shifter through another feedback locking module. A rotation signal is obtained according to the difference between frequency shift amounts of the first frequency shifter and the second frequency shifter. The double-closed loop locking technology-based resonant optical gyro has a completely reciprocal resonant optical gyro structure, and is beneficial for elimination of reciprocal noise of a system, improvement of system linearity, broadening of a system dynamic scope, and reduction of optical Kerr noise.

The present invention discloses a lens bracket assembly for supporting an imaging device. The imaging device includes a body and a lens connected to the body. The lens bracket assembly includes a supporting plate and a bracket. The supporting plate is used for mounting the imaging device, and the supporting plate includes a first side. The bracket includes a supporting portion of which the shape matches the lens of the imaging device and a fixing portion connected with the supporting portion. The fixing portion is fixedly arranged at the first side. The supporting portion is used for supporting the lens. The present invention further relates to a gimbal that uses the lens bracket assembly.

The invention provides a method for locking a LiNbO3 Mach-RPAMZM off set working point. When a modem is not provided with radio-frequency signals, proper detecting voltage is added at the offset input end. A photoelectricity detector is used for detecting light intensity at the output end of the modem. The light intensity is input to the microprocessor as feedback signals. The microprocessor can calculate voltage corresponding to any phase position on a transfer function of the modem at present. In order to reduce influence of laser power fluctuation on the feedback signals, largest output light intensity of the modem is calibrated with a certain period. According to the method, no extra disturbance signals need adding, no extra noise can be caused, and any phase position point can be locked. Through selection of the proper testing voltage, the feedback signals are enabled to be influenced to a minimum degree by system noise. Locking precision can be greatly improved. The method is simple in device, convenient to operate, and high in stability. Moreover, the laser power fluctuation and light path consumption influence the system little.

The invention relates to a screw locking suction nozzle mechanism. The upper end of the vacuum sleeve of the screw locking suction nozzle mechanism is connected with a butting screw, and the upper part of the vacuum sleeve is sealed by a sealing ring; a front head screw is assembled inside the vacuum sleeve, the position of the front head screw is adjusted up and down through an adjustable nut, and a spring is arranged in the vacuum sleeve; an oil-free bushing is arranged in the front head screw, a suction nozzle is mounted on the front head screw, and the suction nozzle is guided through the oil-free bushing; a screw screwdriver head is arranged in the position of the suction nozzle through the vacuum sleeve; a guide hole is formed in the vacuum sleeve, the screw screwdriver head passes through the guide hole, and the guide hole can be used for guiding. The screw locking suction nozzle mechanism is wide in universality, the screwdriver head has a guiding function, the height of the suction nozzle is adjustable, the functions of air suction, vacuum sealing, elastic buffering and the like are integrated, the adjustment is convenient, and screw locking can be performed in an automatic screw suction manner by changing the size of the butting screw and assembling the butting screw and a screwdriver into a whole no matter the screwdriver is a matched screwdriver or a bought screwdriver.

The invention discloses a high-power ultrashort-pulse optical frequency comb generation method based on a self-similar amplifier. The high-power ultrashort-pulse optical frequency comb generation method is based on self-similar amplification technology and effectively overcomes gain narrowing, bandwidth limitation and nonlinear phase distortion in pulse amplification. A light spectrum is effectively expanded, and the bandwidth of an output pulse is reduced. Furthermore the power of a mode-locked pulse is effectively expanded, thereby acquiring a high-power femtosecond pulse and improving carrier envelope phase zero-frequency locking precision. Furthermore carrier envelope phase zero-frequency locking technology based on an acoustic-optical crystal frequency shifter is utilized, thereby realizing large reaction bandwidth and high control precision, and realizing a high-frequency high-power ultrashort-pulse optical frequency comb through real-time control. The high-power ultrashort-pulse optical frequency comb generation method is advantageous in that the high-power ultrashort-pulse optical frequency comb generation method can be directly expanded and applied on femtosecond optical frequency comb control technology for obtaining the stable high-frequency high-power ultrashort-pulse optical frequency comb.

The invention discloses a precise locking device for a super-large caliber expandable primary mirror of an optical sensor for space observation, comprising a positioning device and a locking device, wherein the positioning device comprises a set of positioning blocks confining three free degrees, a set of positioning blocks confining two free degrees and a set of positioning blocks confining one free degree; each set of positioning block a positioning block fixed on a bracing structure of a middle mirror of the primary mirror and a sub-positioning block fixed on a bracing structure of a block mirror of the primary mirror. The locking device comprises a fixed spring nut, a front foundation, a spring, a locking nut, a rear foundation, a push bearing, a locking bolt, a decelerator and a stepper motor. The locking device of the precise locking device carries out positioning and locking separately so as to de-skill the processing and controlling difficulty, improves the precision of positioning and the stability of locking and realizes the nano-scale stability. The invention is also applicable to other large space expansion mechanism.

The invention discloses a high-precision phase-locked loop comprising a frequency discriminator, a phase discriminator, a voltage-controlled oscillation module and a digital processing module. An input signal is inputted from the input ends of the phase discriminator and the frequency discriminator respectively. The output end of the frequency discriminator is connected with the digital processing module. The output end of the phase discriminator is connected with the input end of the voltage-controlled oscillation module. The input end of the voltage-controlled oscillation module is connected with the input end of the digital processing module. The output end of the digital processing module is connected with the feedback end of the phase discriminator. Frequency of an output signal is configured according to frequency of the input signal. Besides, phase difference between the input signals is adjusted via changing frequency change direction of the output signal so that the output signal is enabled to be matched with the input signal and an objective of phase locking is achieved.

The invention discloses a delay-locked loop adopting a novel error lock detection circuit, comprising the error lock detection circuit, a phase detector, a charge pump, a low pass filter and a voltage control delay line. The error lock detection circuit detects all output phase clocks of the voltage control delay line, inputs a detection signal into the phase detector, and outputs a charge-discharge control signal to the charge pump. Through adoption of the delay-locked loop, the problem of harmonic wave locking of the conventional delay-locked loop in a broadband range is solved, the harmonic wave locking is eliminated, and a multiphase output of fixed time delay is provided.

The invention relates to a laser frequency stabilizing method and a device, especially is a dual-frequency modification ring cavity enhancing and modifying laser frequency stabilizing method and device, which belongs to accurate laser spectrum technology, accurate laser frequency stabilizing technology and accurate gauge standard technology field. The invention divides the laser beam into two orthogonal beams along the polarization direction through the polarization beam divider, one beam is used for the lock between the ring optical resonance cavity and the laser frequency, another beam is used to realize high accuracy lock between the laser frequency and the spectrum. The character of the laser frequency stabilizing device lies in: two radio frequency signals drive an electric-optic modifier to carry on dual-frequency modification to the laser beam, forms two independent servo control system, in order to realize the lock accuracy of the laser frequency.

The present invention relates to a method for quick locking of a Bang-Bang digital phase-locked loop. The digital phase-locked loop comprises a quick locking controller, a proportion passageway, an integration passageway and an optional Sigma-Delta modulator for enhancing locking precision. Through the adoption of the method of the patent, the contradiction between high locking precision and long locking time of the Bang-Bang digital phase-locked loop is eliminated. Under the condition of not sacrificing the locking precision, the locking speed is greatly increased and the locking time is decreased. The quick locking of the Bang-Bang digital phase-locked loop is achieved in the frequency locking mode of multistage variable step length of automatically regulating step length, the factor of the proportion passageway and the factor of the integration passageway through the adoption of information, outputted by a BBPFD (Bang-Bang Phase Frequency Detector), for reflecting phase lead or lag between a reference clock and a feedback clock. The method of the patent can be realized through the adoption of software or hardware.

The invention relates to an automatic three-lens switchover mechanism for a vehicle-mounted self-adapting optical imaging telescope and belongs to the technical field of optics. The mechanism solves the technical problems of complicated process, high cost, low rigidity, low transmission accuracy, inconvenience in operation, poor locking effect and influence on imaging quality of an optical system in the prior art. The automatic three-lens switchover mechanism comprises an angle encoder, a shaft system, a transmission mechanism and a locking mechanism, wherein the transmission mechanism is a moment motor; a rotor of the moment motor is in screw connection with a rotating shaft; a stator is in screw connection with a base; an unlocking linear motor is in screw connection with the base and is coaxial with a locking bolt; an unlocking pressure spring is located between the unlocking linear motor and the locking bolt; an unlocking photoelectric limit and a locking photoelectric limit are symmetrically connected onto the base of the unlocking linear motor; a limiting block sheet is located on an output shaft of the unlocking linear motor; the rotating shaft is sleeved with a code disk of the angle encoder; and a reading disk of the angle encoder is connected with the base via a connecting plate and a locking disc.

The invention discloses a phase noise compensative amplification system, and the phase noise compensative amplification system comprises an oscillator (1) for outputting a seed light source, and the phase noise compensative amplification system is characterized in that the output end of the oscillator (1) is provided with an acoustic-optic frequency shifter (2) for outputting zero-order light (LO) and first-order light (L1) after processing the seed light source, wherein the output end of the first-order light (L1) of the acoustic-optic frequency shifter (2) is provided with a stretcher (3), the output end of the stretcher (3) is provided with a cascade amplifier (4), the output end of the cascade amplifier (4) is provided with a compressor (5), the output end of the compressor (5) is provided with a number one beam splitting sheet (BS1), the reflection light of the number one beam splitting sheet (BS1) is communicated with a compensative amplification system (12), and the compensative amplification system (12) is connected with the acoustic-optic frequency shifter (2) and supplies a control signal to the acoustic-optic frequency shifter (2).

The invention discloses a coherent laser radar for improving detection range by adopting an optical phase-lock technology. The coherent laser radar comprises a main laser device (space coupling), a tunable local oscillator laser, a receiving optical system, a 3dB coupler, a balanced detector, a frequency and phase discrimination module (PFD), a charge pump and a loop filter. A beat frequency signal is obtained after the laser emitted by the main laser device is interfered by an echo signal reflected by a target and local oscillator light, phase difference of two signals can be obtained after the beat frequency signal and a set reference signal are subjected to the frequency and phase discrimination module, the frequency of the local oscillator laser device is regulated and controlled through the corresponding control voltage produced by the loop filter, so that the beat frequency signal can be locked to the set reference signal phase, the beat frequency signal meets a condition of timedomain coherent accumulation, the extraction of the weak signal is more facilitated, and the detection range of the coherent laser radar is finally improved.

The invention discloses a voltage type automatic gain control circuit. The voltage type automatic gain control circuit comprises an amplitude sampler used for sampling a controlled signal and a reference voltage signal respectively, voltage followers which are connected with the amplitude sampler and are used for isolating the sampled controlled signal and the reference voltage signal respectively so as to obtain a stable voltage signal, alternating current resistors which are connected with the voltage followers and are used for calculating an average value of the stable controlled signal and the reference voltage signal respectively by utilizing the resistors, and a bias current source, wherein a bias terminal of the bias current source is connected with the alternating current resistors, and an output terminal of the bias current source is taken as an output terminal of the voltage type AGC (automatic gain control) circuit and is used for outputting control current by utilizing the average value of the stable controlled signal and the average value of the reference voltage signal as bias voltage. According to the voltage type AGC (automatic gain control) circuit of the invention, output current can be stabilized in a short time, and proper locking precision is maintained.

The invention discloses a gate valve locking mechanism. The gate valve locking mechanism comprises a base, a stepped through hole is formed in the middle of the base, a worm is arranged in the steppedthrough hole, a worm gear matched with the worm is arranged on the side face, a transmission shaft is arranged on the worm gear, limiting worms are arranged at the two ends of the transmission rod, and the base is provided with mechanical memories matched with the limiting worms; the base is further provided with a Bluetooth locking device; and the worm comprises a worm body which is of a hollowstructure, the worm body is provided with a locking hole of which the position corresponds to that of the Bluetooth locking device, an installing disc matched with the stepped through hole is arrangedunder the locking hole, and a valve rod connecting rod is arranged on the lower portion of the worm body. The gate valve locking mechanism has the characteristics that locking operation is convenient, and the locking position precision is improved.