74results about How to "Realize distributed control" patented technology

The invention discloses a power distribution network reactive power optimization system and method based on multi-data analysis. The system comprises: a distribution network data acquisition device for acquiring 10kV line outlet node real-time data and transmitting the same to a host computer control system; a dynamic reactive power compensation device for uploading distribution network operating data and reactive power compensation device running status data to the host computer control system by using GPRS. The method, through the EMS and distribution network automation system, get access to the data of each node of a 10kV line, carries on the load flow calculation, obtains the distribution of the voltage, active power and reactive power of each node of the line, and makes the line run in an optimal state through reactive power strategy control, develop reactive power optimization strategy through a genetic algorithm to determine the compensation point, compensation capacity and the like, controls the reactive power compensation equipment in the distribution network to achieve full distribution network reactive power optimization operation control.

The invention discloses a method for integrating a covering method to obtain a service node in the SDN based on a greedy algorithm. The method comprises the steps that (1), the balance indexes of nodes are determined, and comprehensive ability values of the nodes in an autonomous domain are obtained according to a data fuzzy normalization method; (2), the node with the highest comprehensive ability value in the covering autonomous domain is selected through the greedy algorithm; (3), the node with the highest comprehensive ability value is determined as the service node, and adjacent nodes become sub-nodes of the service node; (4), a set, composed of the service node and the sub-nodes, in the network is removed; (5), the step (2), the step (3) and the step (4) are carried out repeatedly until no candidate network node exists in the network, wherein the determined service node is the final service node of the SDN. According to the method for integrating the covering method to select the service node, every time when the service node is selected, nodes adjacent to the service node do not need to participate in later selection, and thus the algorithm has the good performance in time complexity.

The invention relates to a distributive control and double-clock asynchronous sending and receiving module and an FIFO (First In First Out) device. The distributive control and double-clock asynchronous sending and receiving module is that write data are transmitted by a source synchronization mode; a clock tree of a sending side is not distributed to a receiving side module, so that a real local cock domain can be achieved, and the cost of physically-achieved clock tree balance is decreased; a set of read pointers and write pointers is arranged in each of the sending side and the receiving side, and the two sets of read pointers and write pointers synchronously vary through read pulse and write pulse; FIFO full determining logic is allocated to the sending side, and empty determining logic is allocated to the receiving side, so that the distributive control is realized; the read pulse and the write pulse, instead of read pointers and the read pointers and synchronous full and empty signals, are transmitted between the receiving side and the sending side, and therefore, the quantity of control signals for transmission crossing the clock domain can be further decreased.

The invention relates to a string photovoltaic power generation control system which comprises a system main controller and at least two photovoltaic DC (direct current) modules, wherein each photovoltaic DC module comprises a solar cell module, a photovoltaic slave controller and a storage battery module; the photovoltaic slave controller is used for tracking the maximum power point of the solar cell module and charging and discharging the storage battery module through the DC voltage output by the solar cell module; at least two storage battery modules are in string connection so as to output a high-voltage DC voltage; the system main controller comprises a control unit and an inverter unit; and the control unit is used for controlling the inverter unit to invert the high-voltage DC voltage, monitoring each photovoltaic DC module in real time and switching the abnormal solar cell module and / or the storage battery module in real time. By utilizing the technical scheme provided by the invention, a plurality of photovoltaic DC modules are in string connection to form a high-voltage DC power supply, so that the DC / AC (alternating current) inversion can be directly carried out, the traditional boosting transformer is omitted, and the energy conversion efficiency of the photovoltaic power generation system is improved.

An electric hydraulic excavator sharing a direct-current bus is provided with the common direct-current bus which is electrically connected with an input end of a bucket rod inverter, an input end of an open loop inverter, an input end of a rotating inverter and an input end of a movable arm inverter. A control loop of a movable arm hydraulic cylinder is a closed loop directly controlled by a pump or an open loop controlled by a valve or a loop controlled by the pump and the valve in a composite mode. A control loop of a bucket rod hydraulic cylinder is a closed loop directly controlled by a pump or an open loop controlled by a valve or a loop controlled by the pump and the valve in a composite mode. A control loop of a bucket hydraulic cylinder is an open loop controlled by a valve. A rotating control loop is a system directly controlled by a motor. Electrodynamic force is used in the excavator, structure is simple, efficiency is high, maintaining is convenient, construction cost is greatly lowered, no tail gas is exhausted during construction, and environment protection is achieved.

The invention discloses a multipoint temperature collection system and a collection method thereof. The system comprises a plurality of temperature sensors which are hung on the same bus, and a PIC single chip control system, an RS232 communication module and a PC computer main controller which are sequentially connected with each other, wherein the PIC single chip control system is also connected with a liquid crystal display device and a keyboard, and the PIC single chip control system is also hung on the bus. The method comprises the following steps: performing initialization; issuing a jump ROM order by a host; re-issuing a uniform temperature conversion startup code by the host, waiting for one second, and re-initializing; and sequentially matching correspondent temperature sensors, storing the collected temperature into a memory space, and displaying the collected temperature on the PC computer main controller. The system and the method realize the distribution-type control, can display the temperature of individual point on the computer interface, and can read the temperature one by one in a short time, so the time value is smaller than that of the traditional way, and the efficiency is improved.

The invention relates to an integrated control system of a cable tunnel. According to the technical scheme, the integrated control system of the cable tunnel comprises a temperature measurement module and a main station; the temperature measurement module detects the temperature of the cable in the cable tunnel in real time, and transmits the cable temperature to a main station; and the main station acquires the cable temperature that the temperature measurement module detects, and outputs corresponding cable temperature, temperature pre-warning and temperature alarm signals after analyzing and processing the cable temperature. The system has the advantages of high automation degree, good real-time performance, safety and reliable monitoring, and convenient installation and repairing.

The invention discloses a power distribution method for a direct current microgrid composite energy storage system. The power distribution method comprises the following steps: calculating the resistive droop coefficient of each branched circuit of a storage battery; calculating the capacitive droop coefficient of each branched circuit of a supercapacitor bank; obtaining the output voltage and unbalanced power of a storage battery branched circuit converter, carrying out fuzzy logical processing on the two obtained parameters, and using an output signal for the fuzzy logical processing to adjust the resistive droop coefficient; obtaining the output power of a supercapacitor branched circuit, the power change rate and unbalanced power of the converter, carrying out fuzzy logical processingon the absolute values of the three obtained parameters, and using an output signal for the fuzzy logical processing to adjust the capacitive droop coefficient; and carrying out resistive and capacitive droop control on a direct current microgrid according to the resistive droop coefficient and the capacitive droop coefficient after adjusted. According to the method, the unbalanced power among different energy storage according to frequency distribution is realized, the distribution accuracy is improved, the response speed of supercapacitors is increased, and the supercapacitors are of good expandability.

The invention relates to a power reactive compensation controller which belongs to the field of power technology and comprises a low voltage distribution network reactive compensation module and a main control module. The low voltage distribution network reactive compensation module comprises a voltage detection module, a power factor detection module and a single chip microcomputer, wherein, the voltage detection module and the power factor detection module respectively measure the voltage and power factor angle, and the single chip microcomputer calculates the capacity that needs reactive compensation; the main control module comprises a watch dog circuit module, a keyboard input module, a display module, a voltage and current A / D module, a serial communication circuit module and a lower layer controller serial module, wherein, the watch dog circuit module has the function of protecting the circuit; the keyboard input module and the display circuit module can realize man-machine communication; the serial communication circuit module is responsible for transferring data information of the capacity that needs reactive compensation in the single chip microcomputer to the lower layer controller serial module; the lower layer controller serial module controls a compensation capacitor group. The power reactive compensation controller can enhance the power factor of users at low voltage side of the distribution network.

The invention discloses a digital addressable lighting system integrating the functions of safety protection and emergency recourse and a control method. The digital addressable lighting system integrating the functions of safety protection and emergency recourse comprises a personal computer (PC), a master controller and 1 to 64 nodes, wherein the 1 to 64 nodes are divided into lighting control nodes, lighting execution nodes, safety-protection control nodes and a safety-protection execution node; the PC is connected with the master controller by an RS232 serial port, and the master controller, the lighting control nodes, the lighting execution nodes, the safety-protection control nodes and the safety-protection execution node are all hung and carried on a digital addressable lighting interface (DALI) bus; and the system is based on a DALI protocol and follows the specifications of the DALI buses of a plurality of controllers. By setting the continuous inquiring time and the random-number collision waiting time of DALI bus nodes, the lighting control nodes, the safety-protection control nodes and the safety-protection execution node are additionally arranged on the basis of a traditional DALI lighting system according to the digital addressable lighting system integrating the functions of safety protection and emergency recourse and the control method so as to finish a set of DALI lighting system with the functions of safety protection and emergency recourse. A system integrating the function of safety protection is compatible to the traditional DALI lighting system; and the control flexibility is increased, and the total owning cost of a user is also lowered.

The embodiment of the invention provides a vehicle-mounted radar frequency band distribution method and system. The method comprises steps of according to last iteration, the first use frequency bandof a vehicle-mounted radar in the vehicle, interference suffered by the vehicle radar and the first vehicle state, calculating a second vehicle state of the iteration this time and acquiring updatinghistory of the vehicle; according to the updating history of the vehicle and a first strategy function parameter acquired in the last iteration, calculating to acquire a second strategy function parameter; and according to the second vehicle state and the second strategy function parameter, calculating to acquire a second use frequency band of the vehicle radar in the iteration this time and switching the use frequency band of the vehicle radar to the second use frequency band. According to the invention, by combining observation of the current environment, distribution of radar resources in the dynamic environment is achieved; each vehicle is allowed to adaptively selects emission frequency band through a frequency band selection strategy according to local information of own observation;distributed control is achieved; interference can be effectively avoided; and the control is quite flexible than centralized control.

The invention relates to a part control phase change air preheating system and an air preheating method. The part control phase change air preheating system and the air preheating method well solve the coupling problem of traditional air preheater low temperature corrosion and heat efficiency, an operating method of the air preheating system can be timely adjusted according to actual operation parameters, adjusting capability is greatly increased, and not only is economy and high efficiency of a thermal circulation system guaranteed, but also security and adaptability of the air preheating system can be improved.

The invention discloses a continuous rolling and transmission monitoring system based on a PLC (Programmable Logic Controller) and a monitoring method of the continuous rolling and transmission monitoring system. The continuous rolling and transmission monitoring system comprises an upper monitoring unit, a middle network unit and a plurality of in-situ monitoring units, wherein the upper monitoring unit is communicated with the middle network unit through a second communication module; the middle network unit is communicated with the in-situ monitoring units through a first communication bus. The invention discloses the continuous rolling and transmission monitoring system based on the PLC and the monitoring method of the continuous rolling and transmission monitoring system; according to set control parameters and set operation parameters, a working state of a steel rolling set is controlled by controlling a transmission device through the PLC; working state data of the steel rolling set can be transmitted to an operator station in the upper monitoring unit through a network. A control system and the monitoring system are of a three-stage network structure. data communication between each two network structures is realized through a switch, and layered flowing of monitoring information streams can be conveniently realized; the continuous rolling and transmission monitoring system and the monitoring method, provided by the invention, are suitable for meeting control requirements of different types of management.

The invention relates to an intelligent electric actuator based on CAN bus communication, belonging to the field of control technology for airplane moles and anthropomorphic robots. The intelligent electric actuator comprises a signal demodulation circuit, a motor driving integrated circuit and a DC motor, which are successively connected, the output shaft of the DC motor is connected with a reduction gear unit, the output shaft of the reduction gear unit is coaxially connected with a potentiometer. The intelligent electric actuator comprises a micro-control chip and a CAN bus driver. The micro-control chip is connected with a host computer through the CAN bus driver and a CAN bus, receives the control commands of the host computer, generates PWM signals and transmits the signals to the signal demodulation circuit. The potentiometer is connected with the micro-control chip 26 which collects the position signals of the potentiometer, and transmits the position signals to the host computer. The intelligent electric actuator has small volume, high reliability, low power consumption and high intelligence, is suitable for composing distributed control systems, greatly lowers the control pressure of a host control machine, and reduces the leas number of the host control machine.

The embodiment of the invention discloses a control system of a four-foot robot. The control system comprises a signal processing module, a main controller and a servo control module, wherein the signal processing module is connected with various sensing and controlling modules, by means of connection with the sensing and controlling modules, the signal processing module acquires sensing signals and controlling signals and processes the acquired sensing signals and the controlling signals; the main controller is connected with the signal processing module and generates servo control signals which are used for controlling servo motors on joints according to the sensing signals and the controlling signals all of which are acquired by the signal processing module; and the servo control module carries out servo control over the servo motors according to the servo control signals which are acquired by the main controller. According to the control system of the four-foot robot, the modular and distribution type control of the robot control system is achieved.

The invention discloses a control method and control system for multiple robots. The control method comprises the steps that 1, a control command for the target multiple robots is received; 2, the control command is converted into standard format instructions including execution objects, execution actions and action purposes; and 3, the standard format instructions are decomposed by using a shareddatabase among the robots to obtain the execution objects, the execution actions and the action purposes of the instructions, the execution objects, the execution actions and the action purposes areconverted into instructions executable by the robots, the instructions are sent to the corresponding target robots, and the target robots execute the required tasks according to the converted instructions, wherein the robot information such as the control command of the robots and the sensing information of the robots are in data communication through the shared database, and the shared database is updated in real time. According to the control method and control system for the multiple robots, multi-robot control is achieved, and the control method and the control system have the advantages that control is simple, convenient, flexible, high in accuracy.

The invention discloses a digital electromagnetic ultrasonic decocting device and a digital electromagnetic ultrasonic decocting method. The device comprises a power ultrasonic emitting module, a temperature measurement and control module, a master control unit, a decocting device, a detection module, a wireless communication module and a data center, wherein the master control unit is connected with the power ultrasonic emitting module, the temperature measurement and control module and the detection module respectively and connected with the data center through the wireless communication module. In the method, Chinese medicinal materials are irradiated by using power ultrasound, so that the dissolution of the decoction is quickened; the concentration of the decoction is monitored in real time by using detection ultrasound; the data center receives the monitoring data and judges the decoction degree of the medicinal materials so as to determine when the decoction is stopped; and thus, the consistency in the quality of the decoction is guaranteed, and the decoction process can be embodied on a certain decoction machine to realize distributed control.

The invention discloses a distributed type low-speed high-precision device and method for controlling an astronomical telescope, wherein the device and the method are applied to distributed type high-precision control of the astronomical telescope. The device is composed of a field control box, a remote control box and a PC control desk. A driver and a main operation panel are contained in the field control box. A remote operation panel is contained in the remote control box. The PC control desk is composed of an industrial personal computer with an RS485 and operation software running on the industrial personal computer. The remote control box and the PC control desk of the device are in communication with the main operation panel of the main device field control box through an RS485 bus and send out operation instructions so that master-slave distributed type control can be achieved. The main operation panel sends movement control instructions to the driven device driver through a CAN2.0 bus to monitor the running state of the driver. The driver is connected with a motor line and a feedback line in the astronomical telescope, conducts power amplification on the movement control instructions and transmits amplified movement control instructions to a drive motor of the astronomical telescope, position traction interpolation is achieved at a reasonable speed inside power amplification, and precise control is achieved.

The present invention discloses a method of realizing device search. The method is applied to a network terminal device in a local area network, and comprises the steps of broadcasting an online notice message in the local area network after accessing in the local area network, wherein the online notice message carries the device information and the authentication information of a device; after the online notice messages sent by other devices in the local area network or a response message of an online notice of the device are or is received, authenticating the other devices according to the authentication information of the other devices carried in the messages, if the authentication passes, according to the device information of the other devices, adding or updating the device recording in a device list; displaying the device list. According to the present invention, the network terminal device in the local area network can search the other devices in the network conveniently. The present invention also discloses a device of realizing the device search.

The invention discloses a distributed decoupling optimization method for an integrated energy system considering carbon transaction, and the method comprises the steps: building a centralized optimization framework of an electrical coupling system, and initializing the global data and information of a power system and a gas system; constructing a centralized model of the regional integrated energy system, wherein an objective function of the centralized model comprises an electric power system, a gas system and carbon emission cost, and corresponding operation constraint is carried out on the objective function; converting an original non-convex problem into mixed integer second-order cone programming based on SOCP relaxation, and carrying out reactive power optimization by using an ADMM consistent distributed algorithm; on the basis of an ADMM method of a consistency variable, introducing a consensus variable to represent a synergistic effect between an electric power network and a natural gas network, so that a distributed optimization problem of a regional integrated energy system is solved; and finally, realizing distributed decoupling optimization of the system by using a consistent ADMM method by utilizing case analysis of the regional power and gas comprehensive energy integrated system. The invention further comprises a distributed decoupling optimization system for the integrated energy system considering the carbon transaction.

The invention relates to a motor control method, in particular to a method for remotely controlling a motor through port replication. The motor control method is characterized in that a control port is replicated in a customized pLINK mode, and is separated from a controller body, control commands are issued remotely and executing data and real-time running data are fed back; and different supported protocols can be replaced or converted by the pLINK layer according to applications of a user, information is coded and decoded, the supported protocols can be changed or increased by upgrading driving software, each protocol is provided with an individual data channel, and communication instantaneity and communication efficiency are guaranteed. Installation, later maintenance and interface protection of a motor controller can be greatly simplified; the installation speed is increased; the number and the types of interfaces are reduced; the purchasing cost is reduced; a network can be controlled in a centralized and distributed mode; networking groups can run synchronously or asynchronously; and information of a plurality of controllers can be shared.

The invention discloses a distributed electric drive control system and method based on perpendicular load real-time estimation. A distributed drive controller is connected with an electronic accelerator pedal, a steering wheel angle sensor, an acceleration sensor, a tire pressure sensor, a left front wheel hub motor controller, a right front wheel hub motor controller, a left back wheel hub motor controller and a right back wheel hub motor controller through a CAN communication network. The left front wheel hub motor controller is connected with a left front wheel hub motor. The right front wheel hub motor controller is connected with a right front wheel hub motor. The left back wheel hub motor controller is connected with a left back wheel hub motor. The right back wheel hub motor controller is connected with a right back wheel hub motor. According to the distributed electric drive control system and method based on perpendicular load real-time estimation, the problem that the real-time performance and the accuracy are poor in the traditional vehicle perpendicular load estimation algorithm is broken through, and the handling stability and the driving safety of a distributed drive electric automobile under the actual working conditions are improved.

The invention discloses an ultra-remote unmanned aerial vehicle control system based on a civil mobile phone network. The control system consists of an airborne system and a ground system; the airborne system consists of a communication navigation subsystem and an attitude control subsystem; the communication navigation subsystem completes mobile phone communication, automatic navigation and taskfunctions; the attitude control subsystem completes the attitude and speed control of an unmanned aerial vehicle; the ground system sends out control instructions manually or automatically; and the control instructions are received by the attitude control subsystem, thereby realizing the take-off and landing control of the unmanned aerial vehicle and the conversion of working modes. The ultra-remote control of the unmanned aerial vehicle is achieved through the mobile phone network, so that the defects that in an existing unmanned aerial vehicle technology, corresponding control equipment is large in size, heavy in weight, high in power consumption and strong in electromagnetic radiation are overcome; due to data and instruction transmission based on the mobile phone network, the distributed control is realized; and the control system is widely applied to the fields of forest fire prevention, surveying and mapping, exploration, aerophotography, disaster reduction and relief, law enforcement supervision, emergency command and the like.

The invention relates to a grinding fluid distribution arm, which belongs to the technical field of semiconductor. The grinding fluid distribution arm is positioned just above a grinding table, and can comprise a first mechanical arm, a second mechanical arm and a control module, wherein the first mechanical arm is connected with one end of the second mechanical arm; the other end of the second mechanical arm is provided with a grinding fluid output port; the control module realizes control over the grinding fluid spray direction of the grinding fluid output port by controlling the swing of the first mechanical arm, the swing of the second mechanical arm and the rotation of the grinding fluid output port. According to the grinding fluid distribution arm, the control of the flow can be realized and the relative positions of the grinding fluid output port and the grinding table can also be adjusted by controlling the swing of the first mechanical arm, the swing of the second mechanical arm and the rotation of the grinding fluid output port through the control module, so that the control over the grinding fluid spray direction of the grinding fluid output port is realized, and finally the linear and distributed control is realized.

The invention discloses a method for connecting Cf / LAS composite material via an AgCuTi brazing filler metal. The method for connecting Cf / LAS composite material via the AgCuTi brazing filler metal comprises the following steps: step 1, machining the Cf / LAS composite material; step 2, processing the connection surface of the Cf / LAS composite material obtained in the step 1, placing the connection surface of the Cf / LAS composite material in the acetone solution and ultrasonic cleaning; step 3, placing the AgCuTi brazing filler metal between the connection surfaces of the Cf / LAS composite material to be connected, assembling the assembling piece with Cf / LAS composite material / AgCuTi brazing filler metal / Cf / LAS composite material overlapped in sequence; step 4, placing the assembling piece obtained in the step 3 in a vacuum heating furnace, pumping vacuum, electrically heating and cooling; the method for connecting Cf / LAS composite material via the AgCuTi brazing filler metal is mainly used for connecting the Cf / LAS composite material parts being smaller in size or simpler in shape together for obtaining the member being larger in size or complex in shape, the creep resistant property and thermal shock resistance of the high temperature structure can be improved and great application prospect can be achieved.

The invention relates to a laser forming method for a TiC-FeCr-Gr metal composite material component. Raw material powder selected in the method comprises 0.91-3.61 wt.% of graphite, 4.32-9.81 wt.% of Ti powder, 13.47-23.21 wt.% of Cr powder, 0.13-0.33 wt.% of rare earth oxide and the balance Fe powder. Quantitative feeding and mixing for the powder subjected to laser forming are completed through a multi-hopper spiral powder feeding and mixing system. Coaxial discontinuous powder spray nozzles serve as spray nozzles for laser forming. Formation of layered structures of the inner portion and the outer portion of the composite component is achieved by controlling powder feeding and laser through the system. The mechanical properties of the composite material can reach over 60% of that of matrix metal materials.

The invention provides a double-time-scale distributed voltage control method and system for a three-phase unbalanced active power distribution network. The method comprises the following steps: constructing a mathematical model for realizing multi-target voltage control of an unbalanced tree-shaped power distribution system; dividing a voltage control problem into a fast time scale optimization problem and a slow time scale optimization problem by using a double-time scale optimization framework based on model predictive control, and respectively processing the two optimization problems; andrealizing distributed voltage control by using an alternating direction multiplier method. According to the scheme, devices with different time characteristics are adjusted respectively, the service life of the devices is prolonged, and better economical efficiency is achieved.

The invention discloses an audio-frequency output control method and device and a computer-readable storage medium. The method comprises: determining whether an audio-frequency data stream exists in an audio-frequency channel; if yes, monitoring the audio-frequency data stream, and determining the output source of the audio-frequency data stream; and if the output source is a headset, controlling a first audio frequency, output by the headset, through a wire control of the headset, and controlling a second audio frequency, output by a speaker, through a physical sound-volume key of a terminal. A humanized audio-frequency distributed-regulation scheme is realized, on the one hand, outputs of different audio frequencies can be respectively determined according to a current audio-frequency playing environment, and distributed-control of a plurality of audio frequencies is realized; and on the other hand, the corresponding control scheme can be determined according to a current audio-frequency playing device, and thus regulation operations are more convenient.

The invention provides a flexible tool control system based on Ether CAT and CAN buses. The flexible tool control system comprises an industrial computer, a control cabinet and substation modules on a transverse beam, wherein the industrial computer servers as a core processing unit, the control cabinet and the substation modules are respectively and internally provided with a coupler module, an input module and an output module, the industrial computer is in communication with the coupler module in the control cabinet through the Ether CAT bus, the coupler module in the control cabinet is in communication with the coupler module in the substation modules through the Ether CAT buses, and the coupler modules in the substation modules are in communication through the Ether CAT bus. The CAN buses in the substation modules are in communication with servo motors controlled by the substation modules through the CAN buses, the Ether CAT buses and the CAN buses are combined through the system to be used for data transmission, and flexible shape adjustment motion control over the system is achieved. The flexible tool control system is high in integration level, and has the advantages of being reliable, stable, high in transmission performance, maneuverable, reasonable in design and the like.