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70results about How to "High synchronization accuracy" patented technology

Time division duplex multi-carrier synchronous transmission method based on 5G

The invention provides a time division duplex multi-carrier synchronous transmission method based on 5G, which is used for solving the problems of inflexible carrier time slot allocation and inaccurate time delay compensation in synchronous transmission. By dynamically adjusting time slot allocation and working frequency bands of carriers in a network control center, the method optimizes network loads and reduces cross interference; the time delay of each carrier is compensated in real time by adopting a synchronous signal calibration algorithm, so that strict alignment of transmission time slots is ensured; the transmitting end dynamically adjusts the transmitting power according to link state information, and the receiving end reduces interference and signal attenuation through a multi-carrier cooperative interference management and multi-path delay compensation mechanism; and a receiving end performs joint decoding based on channel estimation and integrates demodulation signals of all carriers, so that the transmission efficiency and the signal quality of the 5G network are improved. The method is suitable for a base station system and a base station and repeater extension coverage system, and is especially suitable for a distributed wireless system including an optical fiber remote distributed system, a cable remote frequency shift repeater system and the like.
Owner:GUANGDONG BROADRADIO COMM TECH

Multi-port PTP time service device and time service method thereof

The invention discloses a multi-port PTP time service device and a time service method thereof, and the device comprises a main time server which is used for providing high-precision time information; the auxiliary time server is used for providing time information when the main time server fails; the multi-port PTP switch is provided with a plurality of network interfaces and is used for connecting the main time server, the auxiliary time server and the plurality of time synchronization clients; the plurality of time synchronization clients are used for receiving the time information and performing time synchronization; according to the invention, a time synchronization service is provided for a plurality of devices at the same time, and the time synchronization requirement in a multi-device and multi-node complex network environment is met; the clock skew and the network delay are accurately estimated and compensated, and the synchronization precision is further improved; the synchronization strategy is dynamically adjusted according to the network condition and the number of devices, it is ensured that the synchronization precision is not affected when the network environment changes or the number of the devices increases, the auxiliary time server is automatically switched to when the main time server breaks down, and the reliability and stability of the system are improved.
Owner:GUILIN XINTONG TECH

Multi-channel sampling synchronization precision correction method based on RFSOC

The invention belongs to the technical field of electromagnetic signal analysis, and particularly relates to a multichannel sampling synchronization precision correction method based on an RFSOC (Radio Frequency System On Chip), a plurality of RFSOC chips synchronously sample in parallel, an ADC (Analog to Digital Converter) high-speed data conversion module is integrated in each RFSOC chip, data acquisition is carried out through the ADC high-speed data conversion module, the acquired data is stored in an FIFO (First In First Out) in real time, and the accuracy of the FIFO is improved. And adjusting the output sequence of the FIFO storage according to the rising edge of the pulse signal. The ADC module of the RFSOC is used in the multi-channel high-speed sampling synchronization process, multiple chips are synchronized through pulse signals, multi-channel synchronous correction among the multiple chips is achieved, the number of needed peripheral circuits is small, collection channels are convenient to expand, additional ADC chips are not needed, and hardware resources can be saved; meanwhile, the signal transmission path is shortened, so that the synchronization precision of signal sampling can be improved.
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP

Rapid installation and adjustment device and method for nuclear power large flange face in-situ repair equipment

The invention belongs to the technical field of nuclear power station large flange face in-situ machining and repairing, and aims to solve the technical problems that in-situ machining and repairing on-site installation and adjustment of a nuclear power station large flange face need many workers, and efficiency is low. The invention discloses a rapid installation and adjustment device and method for nuclear power large flange face in-situ machining and repairing equipment, the device comprises a base device and an electric rapid expansion mechanism, the electric rapid expansion mechanism comprises a jacking screw rod, a jacking block and a transmission screw rod, the transmission screw rod is connected with a motor, and the motor drives the jacking screw rod to stretch out or retract; according to the method, an electric rapid expansion mechanism is installed on the side edge of a base device, rapid stretching or retracting of a jacking block is achieved through a driving motor, and rapid installation and adjustment of the nuclear power large flange face in-situ machining and repairing equipment are achieved. Rapid installation and adjustment of the nuclear power large flange face in-situ machining and repairing robot can be achieved, the on-site installation and adjustment time of personnel is shortened, and the radiation dose of the personnel is reduced.
Owner:CHINA NUCLEAR POWER OPERATION TECH CORP

Variable-rotating-speed hydraulic synchronous driving system with non-equivalent flow division function and working method of variable-rotating-speed hydraulic synchronous driving system

The invention discloses a variable-speed hydraulic synchronous driving system with non-equivalent flow division and a working method of the variable-speed hydraulic synchronous driving system, and belongs to the technical field of hydraulic synchronous driving. Comprising a measurement and control system, a servo oil source, a dynamic pressure feedback diverter valve and a driving unit, the servo oil source, the dynamic pressure feedback diverter valve and the driving unit are connected in sequence, the driving unit comprises a first driving branch and a second driving branch, a diverter detection unit comprises a flow compensation module, and the flow compensation module comprises a valve body; the pressure compensation unit comprises a first pressure compensation valve, a second pressure compensation valve and a shuttle valve, and the dynamic pressure feedback unit comprises a spring-mass module and a damping hole which are connected in series. Flow is distributed and loads are homogenized through the load-sensitive diverter valve, the flow difference, caused by time-varying unbalance loading, of the two branches is compensated through the dynamic pressure feedback device, high-precision synchronization of the two driving branches is achieved through the non-equivalent diverter principle, and meanwhile the efficiency of the synchronous driving system is improved through variable-rotating-speed servo oil supply.
Owner:CHINA UNIV OF MINING & TECH

System and method for voice mouth shape action matching of conversation robot

ActiveCN119649845APerceived effect is goodPrecise opening and closingSpeech analysisConnection managementEngineeringArduino
The invention discloses a system and a method for voice mouth shape action matching of a dialogue robot, and relates to the technical field of voice matching, the method adopts a Bluetooth dual-channel technology, a time point array is transmitted to an Arduino mainboard of the dialogue robot through a first Bluetooth channel, a voice file is transmitted to sound equipment of the dialogue robot through a second Bluetooth channel, and the sound equipment of the dialogue robot is used for voice mouth shape action matching of the dialogue robot. High synchronization of voice playing and mechanical actions and synchronous transmission of voice files and time point arrays are achieved, close association between voice playing and mouth-shaped actions is ensured, and action lag caused by transmission delay or untimely hardware response is avoided. And each time point in the time point array can be accurately read and compared through a timer arranged in the Arduino mainboard, so that the steering engine can immediately respond at each set time point, and the opening and closing actions of the mouth of the conversation robot are driven. And when the time point arrives, an instruction is sent to control opening and closing of the mouth shape, so that the voice and the mouth shape action are highly consistent.
Owner:XIAMEN ELEVEN STREET INFORMATION TECH CO LTD

Bluetooth sound box synchronous playing method and system

The invention relates to the technical field of Bluetooth sound boxes, in particular to a Bluetooth sound box synchronous playing method and system. The method comprises the following steps: performing master device election on a Bluetooth loudspeaker box group to obtain a loudspeaker box group master device identifier; carrying out distributed time synchronization network construction on the Bluetooth sound box group based on the sound box group main equipment identifier to obtain a sound box group time synchronization network; performing environment signal scanning on the Bluetooth sound box group to obtain environment frequency band signal data; performing dynamic frequency band allocation on the Bluetooth loudspeaker box group based on the environment frequency band signal data to obtain a loudspeaker box group frequency band allocation scheme; performing network performance parameter monitoring on the Bluetooth sound box group to obtain a sound box group network performance parameter set; and according to the sound box group network performance parameter set, performing audio buffer area determination on the Bluetooth sound box group to obtain an audio buffer area distribution scheme. According to the invention, the accuracy and stability of audio synchronization are improved, the user experience is optimized, and the application scene of the Bluetooth sound box is widened.
Owner:SHENZHEN AOOLIF TECH CO LTD

Interrupt generator with synchronization function

This application relates to an interrupt generation device with synchronization function. By using one of the interrupt generation modules as a reference interrupt module, when the synchronization signal output by the synchronization output module arrives, the reference timing module adjusts the count of each interrupt module according to the synchronization signal, the reference count of the reference interrupt module, and the timing duration of the reference timing module itself, so as to change the output time of each subsequent interrupt signal. This makes the output reference interrupt signal synchronized with the synchronization signal, and other interrupt signals still maintain the initial phase relationship with the reference interrupt signal before adjustment, and eventually synchronize with the synchronization signal. In this way, only one synchronization signal is needed to ensure that the synchronization of all interrupt signals is achieved without changing the phase relationship between the interrupt signals of each interrupt generation module. The method is simple and has high synchronization accuracy.
Owner:SHENZHEN SHUMA ELECTRONICS TECH

Interference communication integrated waveform generation method based on spectrum dispersion-multi-system phase shift keying

The invention discloses an interference communication integrated waveform generation method based on spectrum dispersion-multi-system phase shift keying. The problems of difficult communication information demodulation and high hardware implementation complexity in interference communication integration research are mainly solved. According to the scheme of the invention, the SMSP interference signal is formed by periodically expanding the chirp signal on the time domain, the communication information is modulated on the phase of the chirp signal, and the plurality of chirp signals carrying the communication information can cause dense false target interference at random positions on the radar, so that the interference and communication integrated signal is generated. At a communication receiving end, a first linear frequency modulation signal is adopted to perform carrier synchronization, so that the synchronization effect can be improved by using the high time width-bandwidth product characteristic of the linear frequency modulation signal, and communication information can be demodulated directly by using a coherent demodulation mode; at a radar receiving end, the signal can generate a radar interference effect with dense false target characteristics.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Double-spindle numerical control turning and milling combined machining equipment

The invention discloses double-spindle numerical control turning and milling combined machining equipment, and belongs to the technical field of numerical control milling machines, the double-spindle numerical control turning and milling combined machining equipment comprises a machine body, a driving mechanism is arranged at the upper end of a rack, the driving mechanism comprises a first movable seat, an insertion hole is formed in the first movable seat, and a synchronous connecting mechanism is slidably connected to the driving mechanism; the synchronous connecting mechanism comprises a second movable seat, a second electric push rod is installed at the upper end of the second movable seat, the output end of the second electric push rod is inserted into the inserting hole, and a first motor and a second motor are installed on the first movable seat and the second movable seat respectively. By arranging the synchronous connecting mechanism, synchronous movement of the second motor and the first motor can be achieved, meanwhile, the end and the outer surface of a workpiece are milled, the synchronous precision is high, the working efficiency is improved, after end machining is completed, linkage can be quickly relieved, independent operation of a single shaft is achieved, and the flexibility of equipment is enhanced.
Owner:FOSHAN NANHAI ZHONGYUXING PRECISION MASCH CO LTD

Fixed time optimal synchronous control method for aero-engine electro-hydraulic actuating mechanism

PendingCN121956540ASuppress unmodeled dynamicssuppress external disturbancesAdaptive controlLyapunov stabilitySynchronous control
The invention belongs to the field of electro-hydraulic system motion control, and discloses a fixed time optimal synchronous control method for an aero-engine electro-hydraulic actuating mechanism. Constructing a double-cylinder hydraulic system dynamic model, and defining a tracking error and a synchronous coupling error; designing an optimal synchronous controller based on a reinforcement learning actor-commentator architecture, and introducing a fixed time convergence mechanism; and a self-adaptive robust compensation item of the enhanced neural network is designed, and unmodeled dynamics and disturbance are inhibited. According to the method, Lyapunov stability analysis proves that the fixed time stability is met, and comparison experiment verification is carried out on an aero-engine hardware-in-the-loop experiment platform. The method solves the problems that in traditional synchronous control, convergence time depends on initial conditions and is sensitive to uncertainty, and a nonlinear HJB equation is difficult to solve, high-precision synchronous motion control within fixed time is achieved, and the method is suitable for an aero-engine electro-hydraulic execution system with the high reliability requirement.
Owner:DALIAN UNIV OF TECH

Stator and rotor combination structure of air compressor for hydrogen fuel cell

The invention relates to an air compressor stator and rotor combination structure for a hydrogen fuel cell, which comprises a positioning mechanism, a bottom plate, a speed chain, a tray, a support, a pressing mechanism, a tray jacking mechanism, a proximity switch, a shell and a rotor, the speed chain is fixed at the upper end of the bottom plate through a plurality of supports, and the tray is conveyed between stations by the speed chain; the tray jacking mechanism is fixed to the lower end of the bottom plate, the proximity switch is fixed to the speed multiplication chain, and after the proximity switch senses that the tray is in place, the tray jacking mechanism jacks and positions the tray. The stator and rotor combination structure of the air compressor for the hydrogen fuel cell has double positioning of the shell and the rotor, positioning is more accurate, a servo motor and a module are adopted for mounting and pressing, and the synchronization precision is higher during descending and pressing. Ejector pin type pressing is adopted, high-precision coaxiality is achieved, a positioning mechanism is convenient to disassemble, model changing is easy, operation is easy, and efficiency is high; and the shell is positioned in a floating manner and is compatible with slight deformation of products.
Owner:SHANGHAI LUZHI HYDROGEN ENERGY TECH CO LTD

A high-precision clock synchronization method and system between two wireless devices

PendingCN122602277Asuppression sensitivityreduce sensitivity
This invention discloses a high-precision clock synchronization method between two wireless devices, comprising: Initially, a first wireless device sends a first message containing a transmission timestamp to a second wireless device. Upon receiving the message, the second wireless device overwrites its local reception timestamp with this first message, completing initial clock alignment. Subsequently, after a turnaround time, the second wireless device returns a second message to the first wireless device and calculates the one-way time of flight based on the time interval and turnaround time. At the next predefined superframe moment, the first wireless device sends a third message. The second wireless device calculates and corrects its local clock frequency offset based on this message and the timestamp of the previous message, while simultaneously correcting the local reception timestamp of the third message using the one-way time of flight. Thereafter, the above message exchange and calculation process is repeated at each superframe moment to continuously maintain high-precision synchronization. This invention fundamentally improves the clock synchronization accuracy between wireless devices.
Owner:BEIJING QINGQING IOT TECHNOLOGY CO LTD

Satellite optical communication blind frequency offset estimation method and device based on extended phase difference, equipment and storage medium

The invention discloses a satellite optical communication blind frequency offset estimation method, device and equipment based on extended phase difference, and a storage medium, and relates to the technical field of signal processing, and the method comprises the steps: obtaining an analog digital signal after digital-to-analog conversion during photoelectric detection; performing phase difference calculation and expansion processing according to the analog digital signal to obtain a phase difference sequence; performing anomaly detection and interpolation reconstruction according to the phase difference sequence to obtain a reconstructed phase difference sequence; and calculating an instantaneous frequency offset according to the reconstructed phase difference sequence, and carrying out noise smoothing processing on the instantaneous frequency offset to obtain a smoothed frequency offset estimation value. According to the invention, abnormal point detection and elimination are carried out on the phase difference sequence of the received signal, and the interpolation algorithm is utilized to reconstruct the continuous phase change track, so that the synchronization precision and link stability of the satellite optical communication system in a large-frequency-offset and high-dynamic scene are improved.
Owner:PENG CHENG LAB

High-precision time synchronization method for star sensor under moving base and inertial navigation

ActiveCN121761882BSolving time asynchronous issuesreduce inherent errorSimulationNavigation system
The application relates to a kind of moving base star sensor and high-precision time synchronization method of inertial navigation, and is mainly related to the technical field of integrated navigation, and the main steps include: real-time acquisition of the motion parameter data output by IMU;Using second-order extrapolation algorithm, based on IMU historical data, the equivalent IMU data corresponding to the star sensor data update time is calculated, the output frequency difference is adapted;Through asynchronous Kalman filtering algorithm, combined with IMU data and star sensor measured data, time update and measurement update are completed, and dynamic error is inhibited;Using high-precision crystal oscillator to optimize the clock source of inertial navigation system, the inherent error of clock output is reduced;Through multi-link cooperation, the time delay error of star sensor is compensated;Using FPGA interrupt latch, time alignment at the hardware level of star and inertial is realized.The method can effectively solve the time asynchronous problem of star sensor and inertial navigation data in the online calibration stage during flight, and guarantee the navigation accuracy and stability of integrated navigation system.
Owner:BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1

Synchronous shooting method, first electronic device and second electronic device

The embodiment of the present application provides a synchronous shooting method, a first electronic device and a second electronic device. The synchronous shooting method includes: the first electronic device receives a first message from a synchronization server; the first message includes a first planned time point, and information about starting to shoot a video frame at the first planned time point; when the first time offset is greater than a preset threshold, P times of interpolation operations are performed, so that the first electronic device starts shooting a video frame at the first planned time point; the second electronic device receives a first message from a synchronization server; the first message includes a first planned time point, and information about starting to shoot a video frame at the first planned time point; when the second time offset is greater than a preset threshold, Q times of interpolation operations are performed, so that the second electronic device starts shooting a video frame at the first planned time point. The embodiment of the present application can quickly and automatically realize multi-camera synchronous shooting with high synchronization accuracy.
Owner:HUAWEI TECH CO LTD

New energy station and control system thereof

The invention provides a new energy station and a control system thereof. The control system comprises a station master controller, M relay board cards, and power supply controllers of power supply devices on feeder lines in the new energy station. At least part of the M relay board cards are in communication connection with the station master controller, and the relay board cards which are not in communication connection with the station master controller are in communication connection with other relay board cards; each feeder line corresponds to one relay board card, the first power supply controller in the Ni power supply controllers in the ith feeder line is in communication connection with the relay board card corresponding to the ith feeder line, and the jth power supply controller is in communication connection with the (j-1) th power supply controller; the Ni power controllers in the ith feeder line comprise the power controllers of the power devices on the ith feeder line, i is an integer larger than 0 and not larger than the total number of the feeder lines, Ni is an integer larger than 1, and j is an integer larger than 1 and not larger than Ni.
Owner:GOLDWIND SCI & TECH CO LTD

A multi-modal sensor time synchronization method for road monitoring

ActiveCN120090750BAutomatically adjust delay compensation strategyHigh synchronization accuracyTime-division multiplexTransmissionData setNetwork conditions
The application provides a multi-modal sensor time synchronization method for road monitoring, comprising: acquiring sensor data for target road detection, and determining a communication time delay; according to actual network conditions and environmental changes, optimizing a compensation value in real time to obtain an optimized data set; based on the complete optimized data set, determining a network topology structure; according to the optimized network topology structure, determining a time synchronization signal sequence of relative time delay information of each node in the network; and optimizing time synchronization of all sensors for target road detection. The application introduces a dynamic environment modeling and adaptive network topology optimization strategy, effectively overcomes the shortcomings of traditional time synchronization technology, and can realize high-precision multi-modal data time synchronization in a complex dynamic environment.
Owner:SHENZHEN ZHONGTING TECH CO LTD +1

Ultrahigh-pressure multipoint synchronous action hydraulic system and control method

The ultrahigh-pressure multi-point synchronous action hydraulic system comprises a servo motor, an ultrahigh-pressure plunger pump, an ultrahigh-pressure electromagnetic switch valve, an ultrahigh-pressure safety valve, N control valve sets and N oil cylinders, and N is larger than or equal to 2; the servo motor drives the ultrahigh pressure plunger pump to provide a pressure oil source, and the N control valve sets can independently control lifting and pressure maintaining of the corresponding oil cylinders. And an oil return throttling speed regulation loop is formed by adjusting the opening degree of the proportional throttling valve in each control valve group, so that synchronous displacement control is realized. Two ports of the proportional throttle valve are connected with the one-way valve and the hydraulic control one-way valve, ultrahigh-pressure oil is separated from the proportional throttle valve, the proportional throttle valve works in an oil cylinder low-pressure oil return loop, an ultrahigh-pressure proportional valve does not need to be arranged, frequent switching of a switching valve in the synchronous action process is avoided, and the advantages of being stable in synchronization and high in precision are achieved. After the synchronous action system is reset, the hydraulic one-way valve and the one-way valve can achieve the pressure maintaining function of the oil cylinder high-pressure cavity.
Owner:道盛液压技术(浙江)有限公司

High-safety and high-precision joint of medical mechanical arm

The utility model provides a high-safety high-precision joint of a medical mechanical arm, which relates to the technical field of medical robots and comprises an input shaft, two RV speed reducers and a servo motor, the axis of the input shaft is horizontally arranged, and the two RV speed reducers are symmetrically mounted at two ends of the input shaft and coaxially arranged with the input shaft. The two ends of the input shaft penetrate through middle holes of the two RV speed reducers and are in gear meshing transmission with planet wheels of the two RV speed reducers, the fixed ends of the two RV speed reducers are away from each other and connected with the rotating arm, and the output ends of the two RV speed reducers are close to each other and connected with the pitching arm. The servo motor is arranged on the peripheral sides of the two RV speed reducers and arranged in the pitching arm, an output shaft of the servo motor is parallel to the input shaft, a transmission assembly is arranged between the output shaft and the input shaft, and brake assemblies are arranged on the servo motor, the transmission assembly, the input shaft and the input ends, away from the transmission assembly, of the RV speed reducers. The brake device has the advantages of being large in load, high in rigidity, small in size, compact in structure, low in noise and the like, high safety and closed-loop control are achieved through the multiple brake assemblies, and the joint control precision is improved.
Owner:NANTONG ZHENKANG MASCH CO LTD +1

Slurry continuous waveguide frequency synchronization method

The invention discloses a slurry continuous waveguide frequency synchronization method, and relates to the technical field of drilling. According to the main conception, a mud pressure wave signal is formed through encoding and modulation under a well according to a formulated frame structure; de-noising the mud pressure wave signal transmitted through the mud continuous wave channel on the ground; and the de-noised signal and a local synchronization signal or / and a synchronization training code word obtain a synchronization curve, so that a ground receiving end performs time synchronization on the mud pressure wave signal inserted with the synchronization signal or / and the synchronization training code word by using a peak detection mode, and finally ground demodulation and decoding are completed. According to the method, the synchronization precision of the measurement-while-drilling mud continuous wave system can be improved, the problem that the synchronization precision is reduced when the depth of the measurement-while-drilling mud continuous wave system is increased is effectively solved, noise interference is more reliably resisted, the synchronization accuracy and stability are improved, the bit error rate is greatly reduced, the anti-noise performance is improved, and the reliability of the measurement-while-drilling mud continuous wave system is improved. And the transmission depth of the measurement-while-drilling system is increased.
Owner:INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCES

Reconfigurable intelligent surface assisted siso system user near field positioning method

The application belongs to the technical field of wireless positioning and specifically relates to a reconfigurable intelligent surface assisted SISO system user near field positioning method. Regular multivariate decomposition and orthogonal matching pursuit are combined to obtain initial values of TOA and AOD on the RIS, then, a l1-norm regularization method based on sparsity is used to estimate the distance. Then, the maximum likelihood estimation formula is used to refine the initial estimation. Finally, the extended invariance principle is combined with the least square method to recover the position and clock offset. The obtained parameter estimation performance is close to the Cramer-Rao lower bound of the estimation error.
Owner:NINGBO UNIV

Railway arrival-departure line anti-slip pull rod force transmission mechanism

ActiveCN224589145UHigh synchronization accuracySolve the technical problem of two-way synchronous force transmissionReciprocating motionStructural engineering
This utility model discloses a force transmission mechanism for anti-slippage tie rods on railway arrival and departure lines, including a square box, force transmission rods, a power pull plate, and a force transmission hinge mechanism. The square box contains a first inner limiting slide rail and a second inner limiting slide rail that are perpendicularly connected to each other. The power pull plate is disposed through the second inner limiting slide rail. The force transmission rods are respectively disposed in the first inner limiting slide rails on both sides of the power pull plate. The two force transmission rods in the first inner limiting slide rails are connected to the power pull plate via the force transmission hinge mechanism. By driving the power pull plate to reciprocate in the second inner limiting slide rails, the force transmission hinge mechanism drives the two force transmission rods to reciprocate in the first inner limiting slide rails. This utility model's anti-slippage tie rod force transmission mechanism ensures that the linear input of the power pull plate is accurately converted into the equidistant reverse output of the two force transmission rods, thereby greatly improving the synchronization accuracy of the rail clamping action, eliminating the risk of unilateral clamping failure, and preventing slippage accidents.
Owner:SHENYANG HEPU RAILWAY TECH CO LTD

A production device and method of a suspension clamp with uniform grip

PendingCN122583615AAchieve continuous captureAchieve uninterrupted production
This invention discloses a production equipment and method for suspended wire clamps with uniform gripping force, belonging to the field of wire clamp manufacturing technology. The production equipment for suspended wire clamps with uniform gripping force includes a U-shaped frame, and further includes: a conveying unit, which has two sets and is respectively arranged on both sides of the U-shaped frame; a drilling unit, which is movable on the upper side of the U-shaped frame, and includes a positioning component for positioning the hull and a first drilling component and a second drilling component for drilling holes on the bottom and sides of the hull; and a reciprocating conveying mechanism, which is arranged on one side of the U-shaped frame and is used to convey the drilling unit and move it back and forth along the length of the U-shaped frame. This invention, by setting multiple independently moving drilling units in a circular motion, achieves tracking and following processing of the hull workpiece on a continuous conveyor line, solving the problem of production line downtime, and realizing efficient continuous processing of suspended wire clamp hulls while ensuring hole position accuracy.
Owner:SHANXI CHANGHONG ELECTRIC POWER EQUIP CO LTD

Multi-output low-frequency picosecond mode-locked fiber laser based on cascaded contra-directional coupler

The application discloses a multi-output low-frequency picosecond mode-locked fiber laser based on a cascade contrast differential beam splitter, which comprises a fiber grating, a gain fiber, a cascade light splitting network, a saturable absorber and a pump coupler for injecting pump light into the gain fiber; the fiber grating, the gain fiber, the cascade light splitting network and the saturable absorber are sequentially connected and constitute a linear resonant cavity with a target set length, and the fiber grating in the linear resonant cavity is connected with the pump coupler to build a linear cavity fiber laser; the length of the entire linear cavity fiber laser can be controlled by controlling the target set length of the linear resonant cavity composed of the fiber grating, the gain fiber, the cascade light splitting network and the saturable absorber, so that the volume of the linear cavity fiber laser is smaller, and meanwhile, after the target set length of the linear resonant cavity is controlled, low repetition frequency can be realized directly in a fundamental mode without complex harmonic mode-locking control.
Owner:SUZHOU INNGU LASER

PTP and radio frequency fusion synchronization method for holographic sand table double-main-view-angle stereoscopic display

The invention belongs to the technical field of holographic display and precise synchronization, and discloses a PTP and radio frequency fusion synchronization method for holographic sand table double-main-view-angle three-dimensional display, which is suitable for multi-user collaborative decision-making scenes such as smart city management and control, emergency rescue collaboration and the like. The method is characterized in that a nanosecond-level unified reference clock is generated through Beidou / GPS, so that a sand table radio frequency transceiver and a display screen are aligned in time sequence; the radio frequency end transmits a synchronizing signal with a PTP timestamp, a visual angle ID and an MAC identifier and opening and closing parameters to the glasses through 2.4 GHz self-adaptive frequency hopping and SM4 encryption; a PTP slave clock is arranged in the glasses to compensate transmission time delay, a time sequence is automatically generated to control an LCD shutter, accurate control smaller than or equal to 300 ms can be maintained when signals are lost, and seamless reconnection is achieved after recovery. According to the method, the synchronization precision reaches a sub-microsecond level, multi-view expansion and multi-sand table cooperation are supported, and the problems of crosstalk, weak interference resistance and the like of a traditional scheme are solved.
Owner:SICHUAN KEBIKE TECH CO LTD

A multi-cylinder synchronous PID control method and system for a rotary excavator

PendingCN122589784AHigh synchronization accuracyAchieve horizontal synchronous displacement
The present application relates to rotary excavator control method technical field, especially in kind for rotary excavator multi-cylinder synchronous PID control method and system, the method includes S1, hardware foundation, S2, inner and outer ring PID control, S3, work mode judgment, S4, normal synchronous mode, S5, blocked follow mode, S6, fault protection mode, the present application is under normal synchronous mode condition, according to displacement outer ring control generates the actual basis speed of each oil cylinder independence and increases cross coupling speed compensation mechanism, improves the synchronization accuracy between multi-cylinder, realizes the horizontal synchronous displacement of multi-cylinder, when the blocked situation appears to certain oil cylinder, limit the remaining oil cylinder to follow in the vicinity of the blocked cylinder, avoid structural deformation and mechanical hard top, when oil cylinder appears serious anomaly, the system turns into fault protection mode, to oil cylinder speed zero and outputs fault alarm and stop interlock, realizes equipment safety protection.
Owner:FUJIAN RANSHI MASCH TECH CO LTD

Automatic adjusting device for synchronization of cullet and mixture

An automatic adjusting device for synchronization of cullet and a mixture is characterized in that a cullet conveying device, a mixture conveying device and a monitoring control device are arranged, and a high-definition digital network camera, a video acquisition system, a comparison operation system and a digital-to-analog conversion system are adopted to form an automatic adjusting system, so that the discharging speed of a cullet discharging machine is calculated; the discharging speed of the cullet discharging machine is automatically adjusted through the batching control system, and the cullet and the mixture are adjusted to be synchronous, so that the labor intensity is reduced, and the synchronization precision of the cullet and the mixture is improved.
Owner:JIAOZUO ANCAI ADVANCED MATERIAL CO LTD

A network real-time synchronization communication system

ActiveCN120602502BReduce latency fluctuationsEnsure collaborative operationsTime-division multiplexSecuring communication
This application relates to a real-time network synchronization communication system, belonging to the technical field of computer network communication. The system comprises four core modules: a hardware optical I / O synchronization module, integrating a multi-wavelength optical transceiver array and anti-jitter circuitry, providing a nanosecond-level global clock signal with a synchronization accuracy ≤15ns; a timing orchestration module, based on time-sensitive networking, dividing fixed time windows and dynamic buffer windows, supporting the priority preemption mechanism of the SRIO bus to achieve deterministic data transmission; distributed RTDATA nodes, replacing traditional single-board computers, integrating heterogeneous computing units and intelligent storage controllers, reducing protocol stack processing latency through zero-copy technology; and a dynamic multicast routing system, constructing secure and isolated multicast trees on demand, and optimizing link load distribution using machine learning. This application solves the problem of decreased real-time performance caused by multi-node communication concurrency through the collaborative design of hardware optical synchronization and dynamic data orchestration.
Owner:BEIJING ASTRONAUTICS JUHENG SYST INTEGRATION TECH CO LTD +1

Closed-loop control method and system for hoisting of large-volume beam body spanning in-service multi-strand tracks

PendingCN121974246AAdapt to security needssuppress overloadLoad-engaging elementsLoop controlTrackway
The invention discloses a large-size beam hoisting closed-loop control method and system for crossing an in-service multi-strand track, and relates to the technical field of bridge construction control. The method comprises the following steps: acquiring and synchronizing beam body reaction force, displacement, inclination angle and train approaching / enveloping data; calculating a barycentric coordinate G and an attitude deviation vector E; identifying a flexibility matrix H (k) on line; generating multiple constraints including counter force, deflection, synchronization error and the like, and a linkage tightening threshold value when the train approaches; robust MPC is adopted to solve the correction amount with minimization of the maximum reaction force change as a main target; synchronously executing and adopting double closed-loop control; switching and re-optimizing the active set when the soft constraint is triggered; and the stability is judged according to quantitative indexes such as G and E dual-threshold duration time. According to the method, operation scene linkage constraint, peak counter-force suppression and multi-target cooperative control are achieved, and the safety and precision of non-stop hoisting of the in-service track are improved.
Owner:CHINA RAILWAY SEVENTH BUREAU GRP NANJING ENG CO LTD