Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

3334 results about "Coordinate control" patented technology

Dynamic bidirectional green wave band intelligent coordination control method for urban traffic trunk line

The invention discloses an intelligent coordination control method of a dynamic bi-directional green wave band for an urban traffic trunk road. The method comprises the steps of starting, processing coordination parameters, processing intersection parameters, processing time and processing cycle, etc. The method adopts a double-stage control structure, namely, a control layer of a traffic control center server and a control layer of an intersection intelligent signal controlling machine, through the information interaction and the coordination of the traffic control center server and the intersection intelligent signal controlling machine, phase sequence is optimized in an on-line manner; and common period, highway section upper phase difference, highway section down phase difference, the starting time of an upper coordination phase, the starting time of a down coordination phase, green ratio at each intersection and other key control parameters are optimized and calculated on a real-time basis. The intelligent coordination control method gets rid of the limit of equal intersection intervals required for the coordination control of the green wave band for the urban traffic trunk road, and realizes the unceasing travel of bi-directional traffic flows on the main road by applying the traffic engineering technique, the artificial intelligence technique and the automatic control technique, thereby reducing the parking rate while the traffic capacity of the trunk road is improved, and obviously reducing the traveling time.
Owner:ZHEJIANG UNIV

Real-time coordination and control method of photovoltaic micro-grid system

The invention relates to the technical field of photovoltaic micro-grid control, and particularly discloses a real-time coordination and control method of a photovoltaic micro-grid system. A central real-time optimal control layer and a local control layer are involved in the real-time coordination and control method. The central real-time optimal control layer collects the voltage and frequency of an AC bus of the photovoltaic micro-grid system, the charge state of a storage battery pack, the output power of photovoltaic power generation micro-sources, the output power of the storage battery pack, the output power of a super capacitor and the real-time power of a load in real time, generates a real-time coordination and control strategy and a secondary frequency modulation and scheduling plan, and issues the strategy and the plan to all local controllers. The local control layer coordinates and controls all the micro-sources in real time, and particularly achieves the scheduling plan issued by the central real-time optimal control layer. According to the real-time coordination and control method, a micro-grid central optimizing controller can manage, coordinate and control all the local controllers in a unified mode, the micro-grid can efficiently and economically run, the output power of the photovoltaic power generation unit is utilized to the maximum extent, the output power fluctuation and the tracking load change of the photovoltaic power generation unit are restrained, the running method of the micro-grid is reasonably adjusted, and energy balance is achieved.
Owner:EAST GRP CO LTD

Autonomously identifying and capturing method of non-cooperative target of space robot

InactiveCN101733746AReal-time prediction of motion statusPredict interference in real timeProgramme-controlled manipulatorToolsKinematicsTarget capture
The invention relates to an autonomously identifying and capturing method of a non-cooperative target of a space robot, comprising the main steps of (1) pose measurement based on stereoscopic vision, (2) autonomous path planning of the target capture of the space robot and (3) coordinative control of a space robot system, and the like. The pose measurement based on the stereoscopic vision is realized by processing images of a left camera and a right camera in real time, and computing the pose of a non-cooperative target star relative to a base and a tail end, wherein the processing comprises smoothing filtering, edge detection, linear extraction, and the like. The autonomous path planning of the target capture of the space robot comprises is realized by planning the motion tracks of joints in real time according to the pose measurement results. The coordinative control of the space robot system is realized by coordinately controlling mechanical arms and the base to realize the optimal control property of the whole system. In the autonomously identifying and capturing method, a self part of a spacecraft is directly used as an identifying and capturing object without installing a marker or a comer reflector on the target star or knowing the geometric dimension of the object, and the planned path can effectively avoid the singular point of dynamics and kinematics.
Owner:HARBIN INST OF TECH

Method for controlling planeness of cold-rolling strip steel

The invention discloses a method for controlling the planeness of cold-rolling strip steel, which comprises the following steps of: carrying out planeness feed-forward control, planeness feedback control and coordination control between both; detecting the cross-section shape and the planeness of a hot rolling incoming material, and actually-measured rolling technological parameters of each frame in real time based on a profiler configured on a No. 1 frame inlet, wherein the parameters comprise rolling force actually-measured values and plate shape adjusting mechanism actually-measured values, and carrying out the feed-forward control on the planeness of each frame outlet; and actually measuring the planeness of the cold-rolling strip steel based on a plate shape roller configured on an outlet of a cold rolling mill, and intensively carrying out the feedback control on the planeness of a final frame outlet. The method can eliminate the influences of the cross-section shape and the planeness of the hot rolling incoming material and fluctuations of the rolling technological parameters on the planeness of the final frame outlet to improve the planeness quality of the cold-rolling strip steel on the one hand, and can automatically control the planeness of each frame outlet, reduce incidence of abnormal conditions, such as fracture surfaces, deviation and the like, and improve the stability in the production process of tandem cold strip rolling on the other hand.
Owner:BAOSHAN IRON & STEEL CO LTD

Method for locating and controlling multilane free flow video vehicle

The invention relates to a multi-lane free flow video vehicle position and control method, the processes thereof are that: step 1, virtual coils are arranged in the visual field of a panoramic camera to form a detection area. Step 2, when a vehicle enters the detection area, a video detector starts an algorithm program to obtain the position of the vehicle. Step 3, a central processing unit starts a microwave communication system and an image snapshot system. Step 4, a logical comparison system judges whether the vehicle has electronic label information, if without, executing step 8. Step 5, the logical comparison system judges whether a vehicle license plate number in the electronic label information and the vehicle license plate number which is identified by a license plate recognition system are consistent, if not consistent, executing step 8 is. Step 6, the images of the vehicle which are snapshot are deleted. Step 7, toll transaction is done, and a transaction record is formed after the transaction. Step 8, the transaction record which is transferred to a background billing system is further treated. Step 9, returning to a main process. The method can achieve an electronic toll collection function in a multi-lane free flow mode through the accurate location for the vehicle and the coordination control for a system.
Owner:RES INST OF HIGHWAY MIN OF COMM

Coordination control and optimization method for battery energy accumulation and photovoltaic power generation based on co-direct current bus

The invention discloses a coordination control and optimization method for battery energy accumulation and photovoltaic power generation based on a co-direct current bus in synchronization and independent operation modes, which supports the access of various types of storage batteries and photovoltaic battery boards through the free combination of the co-direct current bus of a DC (Direct Current)/DC converter, the automatic intelligent charge-discharge management of a storage battery branch and the maximum power tracing management of a photovoltaic battery board branch, wherein the branches are completely independently controlled to realize optimization management; the energy collected by a direct current bus is interacted with the energy of a power grid or an independent load through a post DC/AC (Alternating Current) converter; the DC/AC converter adopts a method for carrying out directional vector control on the voltage of the power grid and modulating the space vector pulse widthof the voltage in the course of the synchronization operation in an active and reactive complete decoupling control mode; and V/f control is adopted in the course of the independent operation to provide a constant voltage and frequency reference to an alternating current bus. The result of an experiment proves that the invention can realize the coordination complementary control and the autonomous optimization management of photovoltaic power storage and has the advantages of good generality, practicality and application prospects.
Owner:BEIJING SIFANG JIBAO AUTOMATION +1

Multi-agent optimized coordination control method of electric network

InactiveCN101777769ARealize intelligent unmanned schedulingGuaranteed economic dispatchAc networks with different sources same frequencyMicrogridPower grid
The invention relates to a multi-agent optimized coordination control method of an electric network in the technical field of electric networks, which comprises the following steps of: collecting local electric information, transmitting the local electric information to a central agent of a microgrid and issuing a control command by a local electric network to the central agent of the microgrid simultaneously; computing by a grid technology; issuing a new control command by the central agent of the microgrid and transmitting the information to a regulation agent of the local electric network by a network line simultaneously; receiving a dispatching instruction of the central agent of the microgrid by the agent of each element and carrying out logical judgment on a result executing these dispatching commands according to the collected local electric information; and meanwhile, optimizing the electric network within a control range by the regulation agent of the local electric network and controlling a computer to carry out parallel computation by the grid technology. The invention is suitable for carrying out optimal dispatching on a distributed energy resource of an intelligent electric network, can control each power supply by an optimization scheme, also enhances the operational processing time greatly and ensures that the intelligent electric network runs safely, stably and economically.
Owner:SHANGHAI JIAO TONG UNIV

Vehicle multi-objective coordinated self-adapting cruise control method

InactiveCN101417655AEnhance the feeling of following the carGood following experienceLoop controlDriver/operator
The invention relates to a multi-objective coordination-typed self-adaptive cruise control method for a vehicle, comprising the following steps: 1) according to the detail requirements of the multi-objective coordination-typed self-adaptive cruise control for a vehicle, the performance indicators and I/O restriction of MTC ACC are designed, and multi-objective optimization control problem is established; and 2) MTC ACC control law rolling time domain is used for solving the objective optimal control problem, and the optimal open-loop control quantity is used for carrying out feedback and achieving closed-loop control. Based on the steps, the control method comprises the following four parts of contents: 1. the modeling for the longitudinal dynamics of a traction system; 2. the performance indicators of MTC ACC; 3. the I/O restriction design of MTC ACC; and 4. solution by the MTC ACC control law rolling time domain. By constructing multi-objective optimization problem, the control method not only solves the contradiction among the fuel economy, the track performance and the feeling of the driver, moreover, on the same simulation conditions, compared with the LQ ACC control, the control method simultaneously reduces the fuel consumption and vehicle tracking error of the vehicle, and achieves the multi-objective coordinating control function.
Owner:TSINGHUA UNIV

Active and reactive coordination control method for permanent-magnet direct-driven wind turbines in low-voltage ride-through process

Enclosed is an active and reactive coordination control method for permanent-magnet direct-driven wind turbines in the low-voltage ride-through process. Two different control strategies are employed for a grid side converter according to amplitude change of power grid voltage: when the power grid voltage is in a normal state, the grid side converter is in an active-priority maximum power tracing control mode so that the wind turbines capture wind energy to the maximum extent; when the power grid voltage is beyond the normal range, the grid side converter is in an active priority control mode so that the dynamic reactive current which is injected into an electricity system meets the requirements of grid combining. An engine side converter is in a direct-current voltage control mode based on rotor energy storage, power unbalance of the direct-current side of the engine side converter is relieved and the direct-current voltage is stabilized by utilizing the self rotating speed of the permanent-magnet direct-driven wind turbines and the change of the kinetic energy. The active and reactive coordination control for the wind turbines before or after the sudden change of the power grid voltage is realized according to the amplitude change of the power grid voltage, the fluctuation of the direct-current bus voltage is restrained by releasing or storing the rotor kinetic energy, so that the low-voltage ride-through capability of the permanent-magnet direct-driven wind turbines is improved, reactive power support is rapidly and accurately provided for the power grid, and certain support is given to restoration of the power grid voltage.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Control method utilizing motor to start engine for double-clutch type hybrid electric vehicle

InactiveCN102490718AIncrease or decrease torqueReduce torqueHybrid vehiclesMotor speedHydraulic cylinder
The invention enables a novel single-motor and double-clutch type hybrid electric vehicle to be a study object and provides a control method of the process of utilizing a motor to start an engine during vehicle running. First a structure and a working mode of the hybrid electric vehicle are analyzed, a system dynamics model is established, a working range of the hybrid electric vehicle is divided, corresponding torque management strategies are formulated; then in the practical application process, whether the conditions for utilizing the motor to start the engine are achieved is judged by calculating demand torque, value of state of charge (SOC) of a battery, a rotating speed of the motor; and when the conditions for utilizing the motor to start the engine are achieved, model switch is performed, a moment-limiting clutch jointing instruction is sent out, and the processing of utilizing the motor to start the engine is achieved by controlling oil pressure of a moment-limiting clutch hydraulic cylinder and utilizing the formulated torque coordination-control strategies to perform coordination control of motor torque, engine torque and transmission torque of a moment-limiting clutch. By utilizing the advantage that the motor responds fast and timely increasing or reducing the motor torque according to the control strategies, the control method provides the demand torque for starting the engine during the vehicle running or compensates the insufficiency of the engine torque, reduces impact degree in the switching process and improves ride comfort of the hybrid electric vehicle.
Owner:CHONGQING UNIV

Integral optimization method and system for automatic power generation system of coal-fired unit

The invention provides an integral optimization method and system for an automatic power generation system of a coal-fired unit. The method comprises the steps of carrying out control valve flow characteristic test and adjustment according to control valve flow characteristic parameters, carrying out combustion optimization on a wind and smoke subsystem and a combustion subsystem, carrying out a fuel disturbance test and a control valve disturbance test to generate typical test parameters, using the typical test parameters to generate a dynamic unit model, constructing a coordinating simulation system according to a coordinating controller and the dynamic unit model, using the dynamic unit model to optimize a feedforward controller and carry out simulation verification on the coordinating simulation system simultaneously, carrying out DCS configuration and parameter debugging in the simulation system, carrying out a constant-voltage slide-voltage variable-load test and a constant-load voltage-transformation test to generate technical indexes of the variable-load rate, the variable-load accuracy, variable-load response time and the main steam pressure accuracy, judging whether the technical indexes meet the preset technical indexes, and if on yes judgment, carrying out a slide-voltage variable-load test to enable the coal-fired unit to operate normally.
Owner:STATE GRID CORP OF CHINA +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products