74 results about "Transport delay" patented technology

The invention provides a delay compensation control method for a double-vibrator wave energy conversion device, which comprises the following steps of: performing numerical modeling and hydrodynamic analysis on the double-vibrator wave energy conversion device, establishing a time domain motion equation of the double-vibrator wave energy conversion device, and introducing a time delay function into the time domain motion equation to simulate control signal transmission delay; simulating the execution delay of the brake by using a partial differential equation; establishing a state-space equation of the device, replacing a convolution term of the time-domain motion equation with the state-space equation, and calculating to obtain a motion state of the device; a Hamiltonian function is defined to convert a constrained optimization problem into an unconstrained optimization problem, and the Hamiltonian function is solved to obtain an optimal control criterion considering control delay so as to realize maximization of energy capture under the optimal control criterion. According to the method, the operation characteristics of a physical system are truly reflected by introducing control delay, so that the locking control method is effectively implemented in an actual physical device, and the energy capture efficiency of a wave energy conversion device and the reliability of system operation are effectively improved.

The invention relates to the technical field of intelligent scheduling, in particular to an intelligent scheduling management system for new energy battery recovery, which comprises a real-time monitoring module, a dynamic relation graph construction module, a double-gradient decision module and a closed-loop updating module, and is characterized in that the real-time monitoring module continuously acquires the real-time position and moving path of each transport carrier and generates transport delay; capturing a multi-dimensional feature vector; the dynamic relation graph construction module models the multi-dimensional feature vectors into a relation graph comprising nodes and relation edges, wherein the relation edges among the nodes comprise weight parameters; the double-gradient decision-making module outputs a cross-regional scheduling path scheme set based on the weight parameters of the relation graph; the double-gradient decision module receives the transportation delay amount, and generates a weight adjustment amount according to a relation edge and a weight parameter of each node in the cross-regional scheduling path scheme set; and the closed-loop updating module feeds back the weight adjustment amount to the dynamic relation graph construction module to trigger dynamic updating of the weight parameter of the node relation edge.

The embodiment of the invention relates to the technical field of vehicle control, in particular to a vehicle control method, a control device and a storage medium, and the method comprises the steps: carrying out the preprocessing, feature alignment and preliminary fusion of first data obtained by all sensors, obtaining third data, and processing the third data according to a communication bandwidth demand, according to the invention, the system performance and the data transmission efficiency are improved, and it is ensured that the fourth data of each sensor are efficiently and accurately fused to generate the environmental perception data, so that the vehicle driving is controlled, the transmission delay of the vehicle control information is reduced, and the occurrence of traffic accidents is reduced.

The invention relates to the technical field of industrial automation control, and discloses a process parameter remote collaborative optimization method and system. The method comprises the following steps: firstly, acquiring a parameter deviation value and transmission delay duration in a process parameter remote collaboration process, extracting a fluctuation period through time domain analysis, and constructing a collaboration degree and a delay influence degree; combining the relevance and the average state of the coordination degree and the delay influence degree of each period to obtain a current remote coordination difference degree; analyzing a parameter deviation descending trend and a transmission delay ascending trend at adjacent sampling moments, constructing an adjustment trend degree, determining a parameter optimization priority in combination with a collaborative difference degree, and further obtaining a feedback adjustment amount; and finally, optimizing a process parameter remote collaboration process through a collaboration controller by utilizing the feedback adjustment amount and the actual adjustment amount. According to the method, the accuracy and adaptability of remote collaboration can be improved.

The invention discloses a differential bus transmission verification system based on a digital ink-jet printer and a printer, and relates to the technical field of printing equipment data transmission, the system comprises a first main control module, a second main control module, 14 pairs of differential signal lines, a downlink channel and an uplink channel, a dynamic verification module adjusts the bit width of a verification code according to the type of a data packet, and the downlink adopts an enhanced CRC algorithm. An odd-even, accumulation and combination algorithm is used for uplink, the algorithm can be switched and retransmission is carried out when continuous error data packets are encountered; a time sequence control module is used for measuring transmission delay, adjusting a clock phase and guaranteeing transmission accuracy; a self-defined bus protocol is divided into three layers; a data packet structure and printing instruction analysis are stipulated; the system has an exception handling mechanism, speed reduction, redundant channel cutting, error recording and diagnosis report generation are performed when verification fails and exceeds a threshold value, a differential signal line is of a twisted-pair structure, signal stability is ensured, and the system is used for connecting a printer with a printing head drive and a motion platform and transmitting a control instruction to ensure reliable and stable data transmission.

The present application belongs to the technical field of distributed cooperative control system, and discloses a multi-point high-precision cooperative ignition system for firework display, comprising: a central controller which non-timely distributes delay time stamps to a plurality of distributed ignition modules and broadcasts a content-neutral synchronization event at a starting moment; the distributed ignition module starts a local timer upon detecting the synchronization event and autonomously counts down according to the pre-stored delay time stamp to execute ignition, the present application decentralizes intelligent time decision to the terminal, avoids the interference of signal physical transmission delay on the overall ignition precision of the system, and replaces the complex real-time clock synchronization and delay compensation mechanism in the traditional control system, so that the architecture simplifies the physical design and deployment complexity of the system, and improves the synchronization robustness and scalability when a large number of nodes work cooperatively.

The invention discloses a dust removal and air distribution control system and method based on a mathematical model, relates to the field of power failure prediction methods of power big data, and provides the following scheme that the dust removal and air distribution control system comprises a data acquisition unit, a mathematical model operation unit, a control decision unit, an execution unit and a feedback correction unit; the data acquisition unit is used for acquiring real-time environment parameters and equipment operation parameters in an industrial scene, and transmitting the acquired data to the mathematical model arithmetic unit through wireless transmission or an industrial Ethernet, and the transmission delay is less than or equal to 100ms. According to the invention, traditional control hysteresis is broken through, 'predictive 'accurate dust removal is realized, and the problem of scene adaptation is solved; meanwhile, self-adaptive regulation and control of multiple industrial scenes are achieved, the energy consumption optimization target can be fused, the win-win situation of efficient dust removal and low-consumption operation is achieved, long-term stability and reliability of the system are guaranteed by constructing a closed-loop optimization system, and the technology is high in expandability and adapts to future industrial intelligent upgrading.

Provided are a method and an apparatus for wireless communication, which help to reduce the overhead of retransmission. The method comprises: a first device sends a first transport block, the size of the first transport block is determined based on a first parameter, the first parameter is determined based on a second parameter, and the second parameter comprises one or more of the following parameters: a second parameter used to indicate the channel transmission quality corresponding to the first transport block; and a third parameter used to indicate the channel transmission delay corresponding to the first transport block.

The invention discloses an intelligent temperature and humidity regulation and control method for a file cabinet, and relates to the technical field of file safekeeping, a transport delay model associated with a storage quantity is introduced, the time difference between a measurement reading and a core state of a file can be dynamically estimated, and control delay is further compensated through additional adjustment time, so that the storage quantity of the file cabinet is improved. Therefore, regulation and control thoroughness and depth are ensured. And moreover, when the cabinet is in a high load state, a mode of automatically switching to a pulse type air supply strategy is adopted, and an air flow dead angle is actively broken through by utilizing pressure pulse, so that the permeation and exchange efficiency of the adjusted air under dense stacking is greatly improved, and deeper and more uniform accurate control on the environment in the whole cabinet is also realized.

The invention provides a vehicle engine oil mass control method and system, and the method comprises the steps: collecting target time sequence data, and creating a corresponding state parameter matrix in real time according to the target time sequence data; constructing a corresponding flow response prediction model according to the target time sequence data, and inputting the state parameter matrix into the flow response prediction model to correspondingly output a flow response prediction value correspondingly generated in a future preset control period; a corresponding two-dimensional compensation matrix is constructed in real time based on the instruction transmission delay data and the flow response predicted value, and an adaptive reference flow instruction is generated according to the target working condition of the vehicle engine; and performing time-phased correction processing on the reference flow instruction through the two-dimensional compensation matrix so as to generate a corresponding target instruction sequence in real time, and converting the target instruction sequence into a corresponding target control instruction in real time so as to correspondingly complete real-time output of the fuel quantity according to the target control instruction. The control efficiency of the fuel flow can be effectively improved.

The invention discloses a long-distance heat supply pipe network heat pump load adjusting method, which comprises the following steps: combining feedforward control with local feedback control, and determining transmission delay according to the length of a heating target pipeline and the flow velocity of a heating medium so as to determine feedforward adjustment advance time; the environment temperature change is forecasted according to the advance time, and the control strategy is determined according to the environment temperature change, so that more stable target indoor temperature control is realized, the delay problem of a long-distance heat supply system and energy waste caused by untimely control of the heat supply system are effectively solved, and double improvement of comfort and energy efficiency is realized.

The invention relates to the technical field of data transmission, and particularly provides a streaming Token double-path transmission method, system and device and a storage medium, and the method comprises the steps: responding to a streaming request, completing the initialization of a system and a session, building a bypass channel from a model to a client, and creating a session context in a control flow engine; identifying the type of each Token generated by the model, and shunting according to the type: data Token routing to a bypass channel and control Token routing to a control flow path processed by a control flow engine; data bypass transmission and control flow service processing are executed in parallel, and the states of the data bypass transmission and the control flow service processing are ensured to be consistent through a state synchronization mechanism; and the dual-path operation state is continuously monitored, and dynamic path adjustment or abnormity recovery is carried out when abnormity is detected. According to the method, the data flow and the control flow are decoupled, so that the transmission delay of the streaming Token is remarkably reduced while the state consistency is ensured.

The invention discloses a winch positioning cruise control method, device and equipment, and relates to the field of data processing.The winch positioning cruise control method comprises the steps that when it is detected that the height of a winch exceeds a preset height threshold value, a measurement starting signal is sent to a visual recognition system; receiving the coupling height fed back; acquiring the height and speed of the winch at the target moment; and determining the final stop height of the winch according to the coupling height, the height of the winch, the speed, the reference stop height and the data transmission delay. Accumulative errors are eliminated through vision measurement, and system delay is overcome through a prediction compensation algorithm. By means of the method, one-time alignment can be achieved, repeated adjustment caused by inaccurate positions is avoided, the operation time of tripping of each stand column is greatly shortened, and the well drilling efficiency is improved. Misoperation is avoided through a condition triggering mechanism; the equipment collision risk is reduced through high-precision positioning; the whole process is automatically completed by the system, and the possibility of manual misoperation is reduced.

The present invention discloses a multimodal transport inventory resonance management method, medium and equipment based on dynamic rules. The method includes: classifying and collecting raw data and preprocessing it into standardized intermodal transport data; constructing a transport time prediction model based on the preprocessed second transport state parameter to extract dynamic transport characteristics, and performing spectral analysis on the second inventory level parameter to obtain inventory cycle fluctuation characteristics; extracting the resonance coupling characteristics of the second transport state parameter and the second inventory level parameter through time-frequency correlation analysis and establishing a feature coding library; constructing a mapping relationship network between transport mode switching rules and inventory adjustment strategies based on the above characteristics; establishing a resonance control parameter conversion relationship between a baseline transport scenario and a target transport scenario; and finally constructing a multidimensional resonance management knowledge base. The present invention realizes the coordinated control of transport delays and inventory fluctuations under multimodal transport, effectively suppresses the supply chain resonance effect, and improves the system's responsiveness and stability.

The application provides a delay compensation control method for a double pendulum wave energy conversion device, which comprises the following steps: numerical modeling and hydrodynamic analysis are performed on the double pendulum wave energy conversion device, time domain motion equations are established, a time delay function is introduced into the time domain motion equations to simulate control signal transmission delay, and partial differential equations are used to simulate the execution delay of the brake; state space equations of the device are established, the convolution items in the time domain motion equations are replaced by the state space equations, and the motion state of the device is calculated; a Hamilton function is defined to convert a constrained optimization problem into an unconstrained optimization problem, the optimal control criterion considering the control delay is obtained by solving the Hamilton function, and the maximization of energy capture under the optimal control criterion is realized. The application truly reflects the operation characteristics of the physical system by introducing the control delay, so that the closed-loop control method is effectively implemented in the actual physical device, and the energy capture efficiency of the wave energy conversion device and the reliability of the system operation are effectively improved.

The present application relates to torque calculation technical field, a kind of electric power-assisted bicycle's torque adaptability regulation method and system, comprising: receiving torque adjustment instruction, based on torque adjustment instruction to start system adjustment unit, gather side swing angle and side swing angular velocity, calculate transmission delay, if transmission delay is not in delay range, to transmission data packet set is screened, obtain standard data packet set and over-limit data packet set, to over-limit data packet set is adjusted, obtain adjustment data packet set, based on standard data packet set and adjustment data packet set obtain integrated data packet set, if transmission delay is in delay range, calculate external interference estimate value and utilize external interference estimate value to calculate side swing angular acceleration, calculate side swing torque and inclination torque, and according to side swing torque and inclination torque calculate regulation torque, according to regulation torque completes torque adaptability regulation.The present application can improve the regulation speed and accuracy of torque adaptability regulation.

The invention discloses a specified performance output feedback robust fault-tolerant control method, and the method comprises the steps: firstly building a preliminary model of a control system according to the structure of the control system; secondly, giving out a partial failure coefficient of the actuator, and establishing an actuator fault model; and then considering transmission delay and an actuator fault model, designing a fault-tolerant controller, and introducing specified performance indexes into fault-tolerant control. And finally, establishing a closed-loop system with time lag and faults based on the preliminary model of the fault-tolerant controller and the control system with the introduced specified performance indexes, and completing fault-tolerant control. According to the method, the fault stability is ensured, the performance standard is met, and the controller can obtain good dynamic performance while having certain fault-tolerant capability.

Disclosed in embodiments of the present invention are an HARQ feedback method and apparatus, capable of being applied to systems such as the Internet of vehicles, V2X, and V2V. The method comprises: receiving a scheduling instruction sent by a network device, the scheduling instruction being used for scheduling multiple transport blocks; and in response to the multiple transport blocks comprising a first transport block which enables HARQ feedback and a second transport block which does not enable HARQ feedback, sending at least one HARQ feedback to the network device, wherein the at least one HARQ feedback comprises HARQ corresponding to the first transport block. By implementing the embodiments of the present invention, the network device can wait for HARQ feedback for the second transport block, and can also perform subsequent transmission without waiting for the HARQ feedback for the second transport block. By such a method, a network device can perform subsequent transmission without waiting for HARQ feedback corresponding to all the transport blocks among multiple transport blocks to be received, so that the transmission delay caused by waiting for the HARQ feedback is reduced to a certain extent.

The invention discloses an in-cylinder air-fuel ratio control method and system for a marine methanol dual-fuel engine. Comprising the following steps: acquiring oxygen concentration data in an exhaust pipeline of the methanol dual-fuel engine, calculating a real-time excess air coefficient in exhaust of the engine according to the oxygen concentration data, and acquiring pressure and temperature of an intake manifold; then, based on the front and back pressure and temperature of the intake manifold, the air mass flow entering the intake manifold is estimated in real time; an air-fuel ratio real-time transmission delay model is established according to an engine operation mechanism and structural characteristics, a delay prediction estimator is designed, and the air-fuel ratio in a cylinder is estimated in real time; according to the air-fuel ratio real-time transmission delay model, a predetermined performance air-fuel ratio control algorithm based on ideal internal dynamics is designed; the method is suitable for accurately controlling the air-fuel ratio of the marine methanol dual-fuel engine, and has a good air-fuel ratio control effect.

The present invention discloses a non-fragile fault-tolerant load frequency control method for a multi-area power system. To address the issue that faults in a multi-area power system can affect actual production and life, we introduce an important control method in the power system, namely load frequency control, and make corresponding improvements. First, based on the distribution characteristics of minor faults and severe faults, a stochastic distribution model of local faults is established. Then, considering the specific situation of controller gain perturbation, we take into account both multiplicative perturbation and additive perturbation in controller design. Next, considering different transmission delays, the multi-area power system is modeled as a multi-delay system, and a new non-fragile H ∞ A fault-tolerant load frequency control scheme is proposed, and the problem of handling coupling terms is transformed into the W problem in the fault-tolerant load frequency controller. Finally, the feasibility of the method is verified through numerical examples.

The terminal comprises a first main processor which generates a power supply quality evaluation report based on bus time sequence data, identifies a load state based on branch time sequence data and identifies a connection topological structure of a power supply network based on a minimum spanning tree algorithm; the fault diagnosis module generates a comprehensive fault early warning result based on the bus time sequence data and the branch time sequence data; the HPLC carrier communication module is configured to perform multi-protocol dynamic switching among a power line, ZigBee and 4G, and is used for sending a comprehensive fault early warning result generated by the first main processor to a monitoring center; the first coprocessor is used for processing a protocol stack of the HPLC carrier communication module, the second coprocessor is used for processing a protocol stack of the HPLC carrier communication module, a shared memory pool is arranged between the first main processor and the second coprocessor, the first main processor and the second coprocessor perform data interaction through the memory pool, and the first main processor dynamically allocates operation resources to assist communication tasks when the HPLC carrier communication module transmits comprehensive fault early warning data. The transmission speed of the comprehensive fault result is improved, and the transmission delay of the comprehensive fault early warning data is reduced.

The invention relates to the technical field of rail transit operation management, in particular to a rail transit transportation delay recovery support device which comprises a shell and a processing module arranged in the shell, and the processing module at least comprises a data fusion module, a delay deduction module, an optimization scheme generation module, an evaluation and sorting module and a collaborative decision module. According to the method, rapid and scientific generation and multi-target tradeoff of the delay recovery scheme can be realized, and the operation recovery efficiency and the decision level are improved.

A system and a method for calculating a time delay in a non-terrestrial network (NTN) fronthaul (FH) includes defining a transport delay range including lower bound (Tmin) and an upper bound (Tmax) for the NTN FH, the transport delay including a downlink transport delay and an uplink transport delay, the transport delay range encompasses only a time when a bit leaves a sender until the bit is received by a receiver, and the transport delay values changes with the motion of a satellite.

The invention provides a robot remote control method and system, and relates to the technical field of communication. The method comprises the following steps that: an MQTT proxy server determines a priority according to reference information of an MQTT remote instruction, determines processor information according to an instruction type, and sends the MQTT remote instruction, the priority and the processor information to a message router, so that the message router adds the MQTT remote instruction into an MQTT instruction sequence of a corresponding processor, the reference information comprises the maximum delay, the importance degree and the time sequence dependence degree; and the processor analyzes the MQTT remote instruction into an ROS remote instruction and sends the ROS remote instruction to the robot, so that an ROS operating system of the robot executes an ROS instruction sequence. According to the method, the data message can be prevented from blocking the remote instruction, the remote instruction with higher priority can be ensured to be transmitted and processed preferentially, the transmission delay of the remote instruction is reduced, and the safety of the robot in the navigation process is improved.

Provided is a wireless train control system capable of detecting the train position without a ground coil and correcting the train position in consideration of a transmission delay time. This wireless train control system comprises: a ground device comprising a detection unit that detects that a train has crossed a boundary located on a railroad, an identifier that can specify the boundary position when the detection unit detects that the train has crossed the boundary, and a cross-boundary data unit that creates and transmits, to the train, cross-boundary data having stored therein a serial number of data received from the train immediately before the train crosses the boundary; and an on-board device comprising a train position data unit that creates train position data having stored therein the train position and the serial number of the data, and that periodically transmits the train position data to the ground device, and a train position correction unit that, when the cross-boundary data has been received, corrects the train position by using the value obtained by adding the boundary position specified from the identifier in the cross-boundary data to the value obtained by subtracting, from the current train position, the train position immediately before crossing the boundary specified from the serial number in the cross-boundary data.

The invention relates to the technical field of wireless communication networks, in particular to an oil engine power generation real-time monitoring system based on a communication base station, and the system comprises an oil engine monitoring microprocessor which is used for carrying out the real-time statistics of the power generation duration of each oil engine; oil level height, temperature, current and vibration data in the power generation process of each oil engine are collected in real time; the oil engine information transmission demand analysis module is used for acquiring the channel demand intensity and the vibration factor of each oil engine at the current moment, acquiring the dynamic weight of each oil engine at the current moment in combination with the sharp degree of the amplitude distribution of the vibration data of each oil engine in the preset time period on the frequency domain, and transmitting the dynamic weight of each oil engine to the oil engine information transmission demand analysis module; determining a sequence of sending the data packets of the oil engines to a server; and the wireless communication module is used for acquiring the stable value of each channel and selecting the channel for transmitting the data packets of all the oil engines. The invention aims to ensure real-time monitoring of power generation of the oil engine by improving the data transmission efficiency in the power generation process of the oil engine and reducing the data transmission delay.

The invention discloses a link pre-switching method and device based on a spatial position, relates to the technical field of port equipment communication, and mainly aims to meet the requirements of low time delay and high reliability of remote control of a tire crane. According to the technical scheme, the method comprises the steps of obtaining multi-source operation data of a target tire crane; on the basis of the multi-source operation data, a predicted space-time operation state corresponding to the target tire crane in a specified time period in the future is pre-judged through a space-time joint model, and the predicted space-time operation state comprises a predicted space position, a predicted attitude parameter and a predicted shielding risk probability; calculating a link switching decision score of the target tire crane through a multi-dimensional decision matrix based on the predicted space-time operation state; if the link switching decision score reaches a preset score threshold, triggering a pre-switching operation; and switching a communication link of the target tire crane from the original base station to the target base station after the target tire crane reaches the predicted spatial position and the signal strength and the transmission delay of the target base station are verified to meet preset transmission requirements.

A data dissemination system includes one or more data mules that transmit delay-tolerant data in a group of vehicles, where each data mule receives delay-tolerant data from one or more background servers, and the data mules maintain a polling connection with the background servers. In an embodiment, a data propagation system includes one or more controllers as part of an ego-vehicle, where the ego-vehicle is part of a population of vehicles, where the one or more controllers include one or more processors, and where the one or more processors are coupled to the ego-vehicle. The one or more processors execute instructions to establish a wireless connection to the geo-fencing network as the ego-vehicle travels along the navigation route. In another embodiment, a data propagation system includes one or more background servers that wirelessly communicate with a plurality of vehicles that are part of a group of vehicles. The background server identifies one or more data mules based on the modified cumulative ranking score.

The invention discloses an automatic unhooking process for hoisting of a single blade, relates to the technical field of installation of wind power generation equipment, and aims to solve the problem of how to unhook a single blade of a wind generating set safely, efficiently and automatically after the single blade is hoisted. Appropriate hoisting equipment is selected according to the weight and size of the single blade and the installation requirement of the wind generating set, the hoisting equipment is checked and debugged, the rated hoisting capacity is larger than two times of the weight of the single blade, the automatic unhooking device is installed on the single blade and comprises an unhooking mechanism, a monitoring system, a sensor and a control unit, the sensor is calibrated, and the monitoring system is connected with the control unit. Normal communication among the control unit, the sensor and the unhooking mechanism is ensured, and the signal transmission delay does not exceed 5 milliseconds; and S2, single blade hoisting, wherein the single blade is hoisted through a crane and a hoisting tool. The automatic unhooking device has the advantages of effectively improving the stability, the safety and the hoisting efficiency of automatic unhooking when the single blade is hoisted.

The purpose of the present invention is to provide a distributed fuzzy fault detection method related to the transmission of multiple unmanned ship systems, which belongs to the field of ship control technology. The fault detection method is aimed at multiple unmanned ship systems where actuator failures may occur, and takes into account the interference caused by external factors, and establishes a T-S fuzzy model of the unmanned ship; then the communication topology and transmission delay between the unmanned ships are considered, and a special Lyapunov function is introduced, thereby introducing more variable matrices, reducing the conservatism of solving matrix inequalities, that is, increasing the possibility of finding a solution, ensuring the stability and effectiveness of the fault detection system, dealing with the problem that the matrix inequality caused by the coupling terms brought about by the information transmission between the unmanned ships is difficult to solve, and establishing a distributed fault detection judgment mechanism. The method of the present invention comprehensively considers the internal nonlinearity of the unmanned ship and the interference of the environment in which it is located, and realizes the detection of faults under the adverse influence of complex working environment and long working time.