10results about How to "Reduce synchronization error" patented technology

This invention discloses a differential VGA signal decoding and display device, relating to the display field. It includes a signal input module, an ESD protection module, a differential receiving module, a synchronization separation module, an image decoding driver module, a display module, an audio processing module, and a control module. These modules are interconnected and work together to decode, process, and display differential VGA signals. This differential VGA signal decoding and display device solves the problems of short transmission distance, weak anti-interference capability, limited resolution, and high power consumption associated with traditional VGA interfaces. It also achieves full compatibility with traditional VGA devices, integrating audio processing, local playback, intelligent signal enhancement, and remote monitoring and management functions. It achieves reliable conversion from analog to differential signals, supports high-definition display, and has a transmission distance of up to 50 meters, while maintaining full compatibility with traditional VGA devices. This technology is particularly suitable for professional fields such as industrial automation and medical imaging, meeting the diverse display and intelligent operation and maintenance needs of professional scenarios.

The application discloses a linear topology slave node synchronization method and system based on IEEE 1588 precision clock protocol, and the method comprises the following steps: step one, slave node 1 to slave node n-1 accepts PTP messages from a master node and forwards the PTP messages to the next level; step two, slave node 1 to slave node n-1 accepts PTP messages from slave node n and forwards the PTP messages to the previous level; step three, slave node 1 to slave node n takes an average value of round trip time to obtain an average link delay; step four, the master-slave clock offset is calculated according to the average transmission delay; and step five, dynamic frequency compensation calculation is performed. The application can increase the synchronization accuracy of the system and effectively reduce the clock deviation between nodes in the distributed system of the linear topology structure.

The utility model discloses a device for synchronously controlling a withdrawal and straightening machine and a dummy bar of a continuous casting machine. The device comprises a potentiometer, a PLC (Programmable Logic Controller) control system, a signal isolation module, a withdrawal and straightening machine frequency converter, a dummy bar frequency converter and a digital display instrument. The potentiometer is connected to an analog quantity input port of the PLC control system through the one-input one-output optoelectronic isolator and is used for inputting an initial control signal; the output end of the PLC control system is connected with the withdrawal and straightening machine frequency converter and the dummy bar frequency converter to drive the two frequency converters to operate. A feedback signal of the withdrawal and straightening machine frequency converter is divided into two paths to be transmitted to the PLC control system and the withdrawal and straightening machine digital display instrument through the one-input two-output isolator, and a feedback signal of the dummy bar frequency converter is directly accessed to the dummy bar digital display instrument. The device eliminates electromagnetic interference through a photoelectric isolation module, integrates a water distribution model and a molten steel temperature data interface, adopts a standardized interface design for hardware, is adaptive to different continuous casting machine models, has the characteristics of strong anti-interference capability, stable signal transmission and visual real-time monitoring, and effectively improves the operation reliability of equipment.

The application discloses a joint control method and system of multiple servo motors, which comprises the following steps: collecting real-time working parameters, load feedback data and target feature information of multiple servo motors, and performing space-time alignment and noise filtering processing, simultaneously extracting dynamic response parameters corresponding to each servo motor, and determining the load coupling coefficients between the servo motors; constructing a collaborative task matrix and generating an initial collaborative control strategy; determining different working process stages corresponding to the multiple servo motors, calculating the corresponding collaborative priority weights, and constructing a phased collaborative control model; obtaining corresponding working state parameters and the current state of the target, dynamically adjusting the collaborative coefficients corresponding to each servo motor, substituting into the phased collaborative control model to generate real-time control instructions corresponding to each servo motor, and performing joint control iterative optimization to generate a closed-loop adaptive joint control mechanism. The application can improve the joint control efficiency of multiple servo motors.

The application belongs to the technical field of signal synchronization, and discloses a multi-camera anti-shake timing synchronization control system and method based on FPGA; the method comprises the following steps: taking FPGA as a core, generating an FSYNC signal as a camera exposure reference, and obtaining a delay value through timestamp and differential measurement; collecting IMU data to obtain a global motion vector through a gradient descent algorithm; combining the two to analyze and obtain a phase offset and feed back to the FPGA, and the FPGA adjusts the FSYNC signal according to the global motion vector; the application realizes nanosecond-level timestamp recording through the homologous clock reference and hardware-level signal binding mechanism, and combines global motion vector analysis and dynamic phase offset adjustment, thereby breaking through the limitation of the prior art that relies on static time difference compensation.

The invention discloses an electronic terminal transfer function test system and method based on analog-to-digital conversion. Relates to the technical field of electrical testing and automatic control, in particular to an electronic terminal transfer function testing system and method based on analog-to-digital conversion. Input and output signals of a controlled object are synchronously acquired and processed, and high-precision extraction of amplitude and phase is realized by combining sine frequency sweep excitation with parameter fitting calculation, so that frequency response characteristics of a system in a target frequency band are obtained. The system comprises a main control board, an upper computer and a controlled object, one end of the main control board is connected with the upper computer, and the other end is connected with a controlled object; the upper computer is used for generating a test instruction and sending the test instruction to the main control board; the main control board is used for synchronously acquiring a test excitation signal output by the main control board and a response signal output by a controlled object; and the controlled object receives the test excitation signal output by the main control board and outputs a response signal. And the upper computer generates frequency response characteristics according to the synchronously acquired signals.

The embodiment of the invention provides a multi-point hydraulic synchronous jacking system. The multi-point hydraulic synchronous jacking system comprises a plurality of hydraulic jacks, servo oil pumps connected with the hydraulic jacks respectively and a PLC (programmable logic controller), wherein each hydraulic jack is provided with a displacement sensor for monitoring the actual jacking displacement of the corresponding hydraulic jack in real time; the PLC is in communication connection with all the displacement sensors and all the servo oil pumps so as to be used for controlling the output flow of the corresponding servo oil pumps according to the actual jacking displacement, obtained through real-time monitoring of all the displacement sensors, of the hydraulic jack, and therefore the jacking speed of the hydraulic jack is accurately controlled. And the jacking rate of each jack is accurately controlled in this way, so that the synchronization error between the jacking rates of the hydraulic jacks is reduced, and the requirement for the strict synchronization precision in the scenes such as hydropower station unit top cover maintenance is met.

This invention relates to the field of online detection and condition monitoring technology for power system switchgear, and discloses a method for accurately measuring the opening and closing time of disconnecting switches. By synchronously collecting voltage data on both sides of the disconnecting switch to construct a voltage difference sequence, the action interval is extracted through differential and sliding window energy analysis. Within this interval, differential features are used to determine the action index and convert it into the action time. The average voltage difference before and after the action time is calculated to determine the action type. The stability of the action time is evaluated by combining a reference action time and statistical analysis of multiple measurement deviations. Simultaneously, key data from the entire process are compiled into an identifiable dataset. Through these steps, the measurement of the opening and closing behavior and action time of disconnecting switches is achieved, overcoming the problems of asynchronous single-sided sampling or mechanical triggering, poor reliability of threshold and zero-crossing detection, and difficulty in quantifying time stability, thus providing an improved means for disconnecting switch condition assessment without adding complex hardware.

This invention discloses an electroplating apparatus and an electroplating production line, comprising: an electroplating tank and a clamping and conveying structure; wherein, the clamping and conveying structure is disposed on the open side of the electroplating tank; the clamping and conveying structure conveys the film to be coated along the conveying direction, and the clamping and conveying structure includes at least two sets of clamping and conveying mechanisms; each clamping and conveying mechanism includes an electroplating clamp, a closing clamp assembly, and an opening clamp assembly; on one clamping and conveying mechanism, the closing clamp assembly and the opening clamp assembly are disposed at both ends of the clamping and conveying mechanism along the conveying direction; along the conveying direction of the film to be coated, the closing clamp assembly and the opening clamp assembly of two adjacent clamping and conveying mechanisms are spaced apart and form an adjustable interval. This structure, by providing an adjustable interval, corrects the error caused by the asynchronous electroplating clamps in the previous clamping and conveying mechanism when the film to be coated enters the next stage of the clamping and conveying mechanism; thus greatly solving the synchronization problem.

The application discloses a hard rock explosion test system and method under deep geostress environment, and belongs to the technical field of rock blasting optimization design. The system comprises a geostress hydraulic loading module, a sample bearing module, a blasting occurrence module, a non-contact optical measurement module and an automatic triggering device. The method comprises the following steps: processing a sample, assembling the system, laying out a blasting structure, processing the surface of the sample, loading geostress, preparing for measurement, performing explosion test and processing data. The system and method solve the blank of a large-size and large-equivalent blasting test platform and analysis means under deep in-situ geostress. A digital image correlation analysis system with parallel and efficient calculation is constructed, and explosion pressure field can be quickly inverted.