38results about How to "Flexible topology" patented technology

The method comprises: newly adding a communication scheduling layer into original data link layer of Ethernet; in relation to the standard channel using TCP/IP, newly adding a real time channel; according to the greatest common divisor of control cycle in the actual control area, using a three segmentation dividing principal to divide macro cycle into three time segmentations on time axis; the bus arbitration uses a approach of combining the distribution with the concentration, and uses a time slot distribution based scheduling approach to send the cyclic data relating to the realization of control function in the time segmentation, uses the centralized scheduling approach with priority controlling function to send the system data and non cyclic data in the time segmentation; all slave devices in the system keep the time consistence with the master device by using a clock synchronous algorithm; the logic addressing is made based on the device ID; realizing the real time Ethernet determinacy communication.

The invention discloses a design method of DCS controlled TTP/C bus controller catering to aeroengine. Considering the performance demands of the DCS system of aeroengines, the design method of TTP/C bus controller comprises the steps of general design of the TTP/C bus controller, data link layer design of the TTP/C bus controller, protocol service layer design of the TTP/C bus controller, communication network interface design of the TTP/C bus controller, and the state machine of the TTP/C bus controller. The controller designed by the method on the basis of field bus programmable gate array has the advantage of being light in weight, being low in cost, being simple in maintenance. At the same time the transmission bandwidth is high, the error tolerance is strong, and the bus use rate is high, thus satisfying the demands of the DCS system of aeroengine.

The invention relates to a high-availability industrial Ethernet redundancy method, which comprises the following steps: adding a link redundancy entity on an original data link layer of the Ethernet for managing the sending and receiving of data frames of the Ethernet; setting two network adapter drivers relative to an original protocol stack for managing two network adapter interfaces; connecting a double-connected node which comprises the link redundancy entity and the two network adapter drivers to two independent networks respectively through two network adapters; adding a redundancy control tracker for the data frames on the link redundancy entity for distinguishing the data frames with the same content; sending the data frames which have the same content and is provided with the redundancy control tracker to two mutually-independent networks by the double-connected node through the two network adapters; keeping effective frames and discarding copy frames; and setting up a node table. The method has the characteristics of transparency, self-healing property and compatibility and the like; and the reconstruction thereof is simple, and the safety performance of the system is increased so as to enable the system to have high usability.

The invention requests to protect an implantation-type nervous stimulation system of controlling wireless limb motions and a control method thereof, which relates to a technical field of human implantation-type medical devices. The system makes use of the principle of advanced wireless sensing network technology, constructs a star-type network and not limits to a wireless stimulation network of star-type network topology, and the topological structure is flexible and the extensibility is strong, and stimulation networks with different scales are constructed according to requirements of controlling of different limb motions; by adopting a wireless time synchronous protocol and the coordination work of synchronous dormancy and synchronous awaking of an external control terminal and an internal stimulation unit, the system realizes a multi-target implantation-type nerve stimulation method of wireless limb motion controlling, and the Burst working mode is low in power consumption and can prolong the service life of the internal stimulation unit greatly. The system and the control method thereof provide a novel stimulation device and a control method for the recovery treatment of nervous system diseases or patients of nervous system injury, and are beneficial to realize the controlling over more coordinate and natural limb motions in low trauma through the wireless synchronous controlling stimulation of multiple nerves and multiple muscles.

The invention discloses an elastic operation control method for an AC/DC hybrid distribution network. By establishing a distribution network elastic evaluation index, an energy storage model, a wind power and photovoltaic output model, and constructing a AC/DC distribution network timing sequence transfer model, overall modeling is performed. Since the model is a nonlinear mixed integer programming model and is difficult and inefficient to solve by an artificial intelligence algorithm or enumeration method. Therefore, the invention provides a greedy search algorithm for solving and optimizingthe model. When a fault occurs in the AC/DC hybrid distribution network, the provided model takes account of the transfer and control capabilities of the energy storage, transfers the loads in the faulted distribution network area in cooperation with distributed power sources such as wind power and photovoltaic power in the distribution area and the standby power supply capacity of an adjacent tieline, calculates the elastic index according to a transfer result, optimizes the output of each energy storage period by an improved particle swarm optimization algorithm to obtain an optimal energystorage output mode, and finally achieves the maximum elastic operation of the distribution network in the fault area.

The invention discloses a data flow delay guarantee strategy based on the chance of pairwise inter-flow network coding, comprising the following steps: a step of packet cache: an immediate layer protocol is implemented between an IP layer and an MAC layer, a packet arriving at the IP layer is cached, a virtual queue is set up for each data flow, and the chance of inter-data flow pairwise coding is mined; a step of queue information gathering: the number, weight, delay of data packets in each queue and the data flow pairwise coding relation are counted at the beginning of each dispatching time length; a step of packet scheduling: the optimal sending order and number of packets are calculated by an integer linear programming method; a step of code sending: the packets needing coding are coded, and the packets are sent to the interface of the MAC layer after a code head is added; and a step of ending the current scheduling: when the time of current scheduling expires, the method returns to step 1, and the data packet arriving at the IP layer during the current scheduling continues to be scheduled.

The invention relates to an intelligent helmet used in a fire rescue site. The intelligent helmet comprises a helmet body and is characterized in that the helmet body is provided with a top buffering layer and a middle buffering layer; the area, between the top buffering layer and the middle buffering layer, of the helmet body is an electronic device installation area; a master controller, a sensor and actuator module, a power module and a short-distance wireless communication module are arranged in the electronic device installation area; the sensor and the actuator module, the power module and the short-distance wireless communication module are all connected with the master controller; the area, on the lower front portions of the buffering layers, of the helmet body is provided with a near-infrared camera and a near-infrared LED illumination module which are connected with the master controller; the master controller further builds data communication with an ear canal barometric sensor worn on the head of a firefighter and an embedded OLED display module worn on the forearm of the firefighter. The other content of the technical scheme is a system application used for the intelligent helmet used in the fire rescue site.

The invention discloses a multi-agent interactive game power distribution network peak regulation operation management and control method and system, and relates to the technical field of alternatingcurrent and direct current power distribution network peak regulation management and control of a power system, and the method comprises the following steps: 1, constructing an interactive game modelof a power distribution network operator, an electric vehicle user and an energy storage operator; 2, according to the interactive game model constructed in the step 1, performing game among the three; 3, proving that the equilibrium value of the interactive game model exists and is unique; and 4, solving an equilibrium value of the interactive game model to judge whether the e-th round of game process reaches a game equilibrium state or not. The system comprises an AC/DC hybrid power distribution network peak regulation operation control model based on a multi-agent interactive game, and theAC/DC hybrid power distribution network peak regulation operation control model comprises a state monitoring module, a controllable unit control decision module, an information interaction module, a real-time electricity price decision module and a behavior module. The power supply capacity and the system safety of the system can be improved.

The invention discloses a voice-coil-motor-driven pilot servo valve control system and control method, belonging to the technical field of servo valve control. The voice-coil-motor-driven pilot servo valve control system comprises a servo valve control circuit, a computer, a servo valve, a pumping source, a sensor detection system and a motion actuator, wherein the computer is connected with a CAN (controller area network) bus interface circuit of the servo valve control circuit; a servo valve drive circuit of the servo valve control circuit and the pumping source are respectively connected with the servo valve; the sensor detection system comprises a pressure and flow sensor and a displacement and speed sensor; the servo valve is respectively connected with the motion actuator and the pressure and flow sensor; the motion actuator is connected with the displacement and speed sensor; and the pressure and flow sensor and the displacement and speed sensor are respectively connected with an MCU (microprogrammed control unit). The servo valve coil is driven by an H bridge drive circuit composed of two MOS (metal oxide semiconductor) tubes and two triodes, and thus, the voice-coil-motor-driven pilot servo valve control system has the characteristics of high control stability and high control accuracy.

The invention relates to a latent series capacitor compensation device. The latent series capacitor compensation device comprises a capacitor bank, an overvoltage protection device, a damping device and a bypass circuit breaker. The capacitor bank and the damping device are serially connected and then parallelly connected with the voltage protection device and the bypass circuit breaker; the capacitor bank and the damping device are connected with a power transmission line through a mode switching device Q1 and a mode switching device Q2 respectively; the latent series capacitor compensation device can be independently used as a conventional series compensation device or a latent series compensation device in a power system, or two or more latent series capacitor compensation devices can be used cooperatively. The latent series capacitor compensation device integrates functions of conventional series compensation and latent series compensation and can be used no matter the line is in normal operation or in fault.

The invention discloses a single-phase grounding fault identification method for a small-current grounding system, and the method comprises the steps: enabling a controller to achieve the switching of each neutral point grounding resistor through controlling the switching-on and switching-off of each circuit breaker, and determining whether the neutral point grounding resistor is switched in or not according to the zero-sequence voltage of a bus; and determining the number of input neutral point grounding resistors according to the size of the outgoing line zero-sequence current, so that the fault current of each fault indicator is increased, the sensitivity of the fault indicator is improved, and a fault section is accurately positioned. The method solves the problems that in the prior art, a fault indicator is insufficient in sensitivity and inaccurate in fault section positioning, the sensitivity of the fault indicator is improved by changing the neutral point wiring mode, and the method has wide applicability and high feasibility.

The invention discloses an experiment teaching system comprising a teacher machine control table, a student experiment table system, a router and a switch, a water level measurer, a processing system,the router and the switch are connected in series, and the video distributor is located at the outlet of the teacher machine control table, the router is located at the outlet of a video signal device, and the switch is located at the outlet of the router, and one end of the student experiment table system is connected with the outlet end of the water level measurer, the other end of the video signal device is connected with the inlet end of the router, and the switch is connected with the outlet end of the router. The system is a network technology experiment teaching system which is comprehensive in equipment, convenient maintenance, flexible in topology, and high in integration degree, has the functions of teacher machine video broadcasting and network multimedia.

The indoor power supply is transmitted to each application place through a plug-in power supply bus groove, and the power supply is extended to each set application equipment, switch and socket through a plug-type power supply connection wire. The whole system has a flexible topological structure, fast and convenient installation and disassembly and high installation efficiency and provides strongsupport for indoor modular power supply. The components of the system use an all-metal shell which has good heat dissipation function and can realize the shielding effect and prevent electromagneticinterference to a certain extent; the plug-in installation method is used, the structure is compact and the contact is firm and the strong support can be provided for electricity safety, fire safety,protection safety and rodent prevention; and the whole system is convenient for fast installation and disassembly and can be reused and can save a large amount of cost for users and is quite suitablefor the modular indoor power supply requirements of modular household appliances and smart homes in the future.

The invention provides a robot joint actuator, an actuator module and a robot. The actuator comprises a motor, a motor control processor, a network communication processor and an Ethernet switch chip;the Ethernet switch chip is connected with the network communication processor and is connected with a first network port and a second network port, the first network port is used for connecting networking equipment or a second actuator, and the second network port is used for connecting a third actuator; the network communication processor is used for communication based on an Ethernet TCP/IP protocol; the motor control processor is connected with the network communication processor and generates a motor driving control signal based on a signal from the network communication processor; and the signal receiving ends of the first network port and the second network port are connected through a synchronizing signal line, the synchronizing signal line is further connected to the synchronizing signal input end of the network communication processor, the first network port receives network signals and synchronizing signals of external control equipment through a network connecting line, and the synchronizing signals are transmitted to the synchronization signal input end of the network communication processor through the synchronizing signal line.

The invention relates to the field of robot control, in particular to a control system and method based on EtherCAT communication and a double-shaft driving control device, and the system comprises a master station and a slave station which are in data communication through an EtherCAT bus; the master station comprises an upper-layer controller, the upper-layer controller is used for outputting control instructions to the slave station, and the control instructions comprise a speed instruction and an angle position instruction; the slave station comprises a double-shaft servo driver with an EtherCAT network interface and a servo motor, the servo motor comprises a steering motor and a traction motor, and the double-shaft servo driver receives the control instruction and controls the traction motor and the steering motor to operate; the double-shaft servo driver is further used for collecting the speed and angle positions of the steering motor and the traction motor and feeding the speed and angle positions back to the upper-layer controller through the EtherCAT bus. Control instructions can be sent to the traction motor and the steering motor at the same time, the communication delay time is shortened, and the dynamic response capacity and the data transmission capacity of the whole control system are improved.

The invention discloses an unmanned aerial vehicle swarm intensive continuous launching control system based on a high-speed optical fiber bus. The unmanned aerial vehicle swarm intensive continuous launching control system comprises a swarm launching bin, N unmanned aerial vehicles, an optical fiber transponder, a rocket ignition control device, N rocket boosters and a ground control station. The bee colony launching bin is provided with N launching bin cells, and each bin cell is loaded with an unmanned aerial vehicle; the optical fiber transponder is installed in the bee colony launching bin and is interconnected with all the unmanned aerial vehicles through a high-speed optical fiber bus. The rocket ignition control device is connected to the optical fiber transponder through a high-speed optical fiber bus to realize interconnection networking with the unmanned aerial vehicle; the N rocket boosters are installed at the tail of the unmanned aerial vehicle and connected to the rocket ignition control device through ignition wires. And the ground control station performs information transmission with the unmanned aerial vehicle through wireless communication. The system can solve the influence of the problems of data multi-source, electromagnetic interference, information error codes, complex links and the like on rocket launching control, and ensures that the unmanned aerial vehicle swarm combat system reliably and stably carries out unmanned aerial vehicle continuous dense launching.

The invention discloses an experimental teaching system. The experimental teaching system comprises a teacher machine console, a student experiment table system, a router and a switch; a fluviometer,a processing system, the router and the switch are connected in series; a video distributor is located at the exit of the teacher machine console; the router is located at the exit of a video signalizer; the switch is located at the exit of the router; one end of the student experiment table system is connected with the exit end of the fluviometer; the other end of the video signalizer is connected with the entry end of the router; and the switch is connected with the exit end of the router. The invention relates to a network technology experiment teaching system which is comprehensive in equipment, convenient to maintain, flexible in topology and high in integration degree, and has a teacher machine video broadcasting and network multimedia function