11results about How to "Reduce control delay" patented technology

The invention relates to the technical field of power line protection, and discloses a direct-current ice melting device and a control method thereof.According to the direct-current ice melting device, an alternating-current bus of an original alternating-current ice melting module is connected into the direct-current ice melting module through an isolation grounding switch, and the control relation between the alternating-current ice melting module and the direct-current ice melting module is optimized; the alternating current ice melting module and the direct current ice melting module are controlled in a coordinated mode through the control module, on the premise that reliable and effective control is guaranteed, control hierarchy arrangement is reduced, a control link is made to be simple and efficient, control time delay is reduced, protection action time when a system breaks down is shortened, free and automatic switching of the two ice melting modules can be achieved, and the system reliability is improved. And the ice melting efficiency is improved.

The invention discloses a superposition method and device for improving PLC bandwidth of a computing network host, and relates to the technical field of computing network hosts, and the method comprises the steps: in a hardware level, the computing network host employs a plurality of PLC modules to work in parallel, each PLC module carries out data transmission independently, and the plurality of PLC modules are combined to form a composite communication network; in the software level, the computing network host manages data traffic distribution among the PLC modules through a dynamic routing algorithm; the dynamic routing algorithm automatically adjusts the data flow direction based on the current network state of each PLC module so as to realize load balancing. Through a multi-module superposition technology of a hardware level and a dynamic routing algorithm of a software level, more efficient data transmission is realized, communication delay in a large-scale networking environment is reduced, user experience is improved, and response speed and stability of the intelligent home system are enhanced.

The invention discloses a photovoltaic inverter maximum power point tracking method, electronic equipment and a medium. The method comprises the following steps: setting a first MPPT voltage according to an open-circuit voltage; obtaining first MPPT power according to the voltage average value at the end of the zero crossing point in the first power grid period and the second power grid period in the first control period and the first MPPT voltage; calculating a first MPPT current based on the first MPPT power and the first MPPT voltage; setting a second MPPT voltage according to the open-circuit voltage; obtaining second MPPT power according to the voltage average value at the end of the zero crossing point in the third power grid period and the fourth power grid period in the second control period and the second MPPT voltage; calculating a second MPPT current based on the second MPPT power and the second MPPT voltage; when the deviation between the first MPPT current and the second MPPT current is smaller than a threshold value, the maximum MPPT current and the minimum MPPT current between the first MPPT current and the second MPPT current are taken, and the weighted sum of the maximum MPPT current and the minimum MPPT current serves as the current value of the photovoltaic maximum power point tracking point.

The invention discloses a self-adaptive optical remote control interaction method for quantum communication, and relates to the technical field of quantum communication, and the method comprises the following steps: S1, system initialization and video stream generation; the CPU and the FPGA are integrated on one board card, the FPGA has lower control delay and power consumption compared with a GPU when processing calculation with high repeatability, such as Hartmann calculation and centroid calculation, so that the correction frequency of the adaptive optical system is improved, the stability and integrity of light beams in quantum communication are enhanced, and meanwhile, the accuracy of the correction frequency of the adaptive optical system is improved. The CPU + FPGA hardware architecture retains the advantages of a CPU von's structure, introduces the characteristics of no instruction, low delay and reprogramming of the FPGA, overcomes the problem of complex instruction stream control logic of the CPU and the GPU, finally achieves the purposes of improving the correction frequency of light beams and reducing correction delay in quantum communication, reduces the power consumption of equipment, and improves the reliability of the equipment. And the reliability and efficiency of the quantum communication system in practical application are improved.

The present invention relates to a method and device for processing characteristics of electroencephalogram (EEG) signals, the method comprising obtaining an electroencephalogram (EEG) signal of a patient to be tested within a preset time period, obtaining an EEG data matrix according to the EEG signal; intercepting the EEG data matrix with a sliding window and stacking it with a time delay to obtain a sliding window augmented data matrix, and calculating modal characteristics; selecting a modal vector related to a task, splicing the modal vector along time, obtaining a modal change information matrix, and performing spatial filtering to obtain a modal co-spatial mode; selecting a modal co-spatial mode filter with the largest discrimination, and calculating the variance information of the modal co-spatial mode data corresponding to the left and right hand motor imagery after spatial filtering as the final feature for classification. The present invention can extract the global dynamic characteristics related to motor imagery based on less EEG time series data, obtain a parameterized and accurate description of the brain modal change, thereby improving the classification accuracy and reducing the control delay of the brain-computer interface.

The application provides a laser transmission method and system for atmospheric turbulence adaptive compensation, and relates to the technical field of optical communication. A distorted laser beam is received by a receiving aperture and physically split for detection, and an instantaneous sequence of light intensity, a two-dimensional tilt vector in time domain and a residual high-order phase array are synchronously extracted. The tilt vector is converted into a low-order control instruction in a first control period, the residual high-order phase array is corrected by a physical wind speed feedforward in a second control period and converted into a high-order control instruction, and the stroke saturation and the physical driving voltage saturation are output at the end of the period. The light intensity sequence is collected to calculate a light intensity flicker index, a multi-dimensional channel state matrix is constructed by combining the bit error rate, the stroke and the voltage saturation, a three-state transfer decision is made according to the relationship between the numerical value of the elements in the matrix and a preset threshold, and finally, corresponding communication modulation format switching and receiving aperture physical adjustment are performed according to the decision result, so that time sequence decoupling and cross-layer linkage are realized, and the strong turbulence link breakage rate is greatly reduced.

The present invention relates to a PLC control method, system and controller for realizing a time scheduling function, wherein the method comprises: matching the current time with the time series of the timetable variables; if the time series does not match the current time, outputting a default value and prompting an abnormal state; if the time series matches the current time, judging whether the current time meets the special time trigger judgment condition; when the special time trigger judgment is met, executing a special event output and prompting a normal state; when the special time trigger judgment is not met, judging whether the current time meets the general time trigger judgment; when the general time trigger judgment is met, executing a general event output and prompting a normal state; when the general time trigger judgment is not met, outputting a default value and prompting a normal state. The present invention has the advantages of being simple and easy to use, stable and reliable, having a small control delay, and being flexible and easy to expand in a PLC automatic control scenario for planned scheduling based on a time series.

The invention provides an active control system and method for a wind and light station, and the system comprises a photovoltaic power station, a wind power station, a first protocol converter, a second protocol converter, a first integrated automatic monitoring terminal, and a second integrated automatic monitoring terminal. The wind power plant is connected with the second integrated automation monitoring terminal through the second protocol converter, the photovoltaic power station and the wind power plant are connected with the AGC / AVC background through the first protocol converter and the second protocol converter respectively, the working principle is simple, complementarity among various resources can be utilized to the maximum extent, efficient consumption of high-proportion renewable energy sources is guaranteed, and the utilization rate of the renewable energy sources is improved. Through a distributed algorithm, various types of energy sources are divided into small processing parts to be processed uniformly, so that the processing efficiency is improved, and the coordination control delay of the comprehensive energy sources is reduced.

The application provides a task energy efficiency optimization-oriented unmanned aerial vehicle dynamic position deployment control method and device, and relates to the technical field of unmanned aerial vehicle communication control.The application constructs an unmanned aerial vehicle mobile edge computing system model, collects a current environment state at each discrete time step to generate a local observation vector, and generates a deterministic action vector; then, a distributed matching game with a ground mobile device is performed to complete task association; then, position updating is performed, a multi-target reward function is calculated, and centralized network model training is performed to iteratively update a Critic evaluation network and an Actor strategy network; when the model training reaches a preset requirement, the training is terminated, and a task energy efficiency optimal unmanned aerial vehicle dynamic position deployment control strategy is obtained. The application can realize deep coupling optimization of physical trajectories and offloading decisions, effectively solve user association conflicts and uneven computing load problems in a dynamic scene, and significantly improve system comprehensive energy efficiency while guaranteeing service quality.

A structured light module with a microcontroller includes: an infrared fill light for projecting infrared floodlight; a laser for projecting multiple discrete infrared beams with a pattern; an infrared sensor for receiving laser light reflected from the object to be photographed and generating raw data; a microcontroller for receiving a strobe signal from the infrared sensor and, based on the strobe signal, alternately turning on the infrared fill light and the laser, while maintaining complete synchronization between the projection time and the exposure time of the infrared sensor; and a system-on-a-chip for sequentially receiving the raw data from the infrared sensor and sequentially transmitting the image data according to the received order; the image data is the raw data or obtained by processing the raw data. This invention significantly reduces the problems caused by data transmission issues between the main system and the infrared fill light and laser, resulting in more stable and reliable image acquisition.

The present disclosure provides a memory control method, a memory controller and an electronic device. The memory control method is executed by programmable circuitry for controlling a target memory, and includes: detecting, by the programmable circuitry, a plurality of target events in real time; when a type and a number of the detected target events satisfy a trigger condition of any one of a plurality of preset states, selecting to run an action execution circuit module corresponding to the preset state, the trigger condition including a logical combination of one target event or a plurality of target events; and executing, by the action execution circuit module corresponding to the preset state, one or more actions corresponding to the preset state, at least one of the one or more actions being used for controlling the target memory. The embodiments of the present disclosure can flexibly configure a memory control scheme and improve the efficiency of sending control signals to the memory.