70 results about "Hierarchical control system" patented technology

The invention discloses a multi-level radio network-based self-adaptive signal lamp system and a control method thereof. The system is characterized by consisting of a management terminal, a gateway electronic control unit (ECU), a signal driving test ECU, and a vehicle detecting ECU; in the invention, the gateway ECU, the signal driving test ECU, and the vehicle detecting ECU arranged at each intersection are respectively taken as a coordinator, a router and a terminal node of ZigBee network for performing network and layout; the excellent characteristics of radio sensing network, such as self-organization, multi-hop routing, etc. are kept; the integral robustness, reliability and maintainability are improved; and the construction and electrical wiring are simplified. The global system for mobile communications (GSM) interface of the gateway ECU makes the management terminal and a plurality of intersections realize a green wave band coordination control function in short message internet manner. Based on a hierarchical control system of a multi-level network structure, the system can be used for handling overall traffic flow intelligence dispersion on a large scale, and has the characteristics of capability of independent running at a single intersection and keeping system intelligence even a management terminal network system fails.

The invention discloses a method for model mismatching detection and positioning of a multivariate predictive control system in a chemical process. By aiming at the typical hierarchical control system in the traditional process industry, the model mismatching detection and positioning is carried out respectively on a multivariate system and all univariate subsystems in the multivariate system. The method comprises the steps of: acquiring residual errors of the multivariate system in a predicative control layer on the basis of an orthogonal projection method, constructing a monitoring statistic computing engine, and acquiring the residual errors, sensitive to process dynamic characteristic variation only, of the univariate system on the basis of an auxiliary variable identification method.In the invention, closed-loop operation data is adopted directly and additional information of the system is not needed; rapid detection and positioning can be made just by utilizing a small amount of data so that fewer disturbances are made to a working condition; and the mismatching information of process models of all univariate subsystems in the multivariate system can be positioned so as to eliminate the influence of the disturbances. By means of the method disclosed by the invention, the accurate model mismatching information can be obtained rapidly at lower cost, the maintenance cost of the predictive control system can be reduced, the service life of the predicative control system can be prolonged and the gain can be improved.

A method and system is disclosed for the deployment, reconfiguration and retrieval of robotic highway safety markers. The system includes one or more robotic safety markers, a base station or lead robot having a range-finder module for robotic safety marker localization, a communication module for master-slave communication with each robotic safety marker and means for path planning for the robotic safety markers. The system is controlled by a hierarchical control system having both global and local control.

A microgrid system and a hierarchical control system thereof are provided, at the primary droop control base on a droop control theory, as the distribution of the output power of the corresponding distributed micro-source energy conversion device is realized, the frequency and amplitude fluctuations of the output voltage of the corresponding distributed micro-source energy conversion device introduced by the droop control are compensated by a secondary micro-source controller, and then the bus voltage of the corresponding sub-micro-grid connection point is regulated and controlled by a three-stage coordination controller through a PI closed-loop feedback control according to the voltage of the main grid connection point; furthermore, the voltage amplitude and frequency fluctuation caused by droop control are repaired, and the power quality of microgrid is improved.

The invention relates to a direct-current grid hierarchical control system and a design method thereof. The direct-current grid hierarchical control system comprises a direct-current grid overall coordinated control layer, a multi-convertor station coordinated control layer in regional direct-current sub-grids, and a voltage source converter station (VSC) body control layer which is connected withthe regional direct-current sub-grid coordinated control layer, wherein the multi-convertor station coordinated control layer is connected with the direct-current grid overall coordinated control layer; the direct-current grid overall coordinated control layer and the multi-convertor station coordinated control layer in the regional direct-current sub-grids adopt an active/standby control mode; and the control system also comprises a direct-current grid wide-area measurement system (WAMS) connected with the direct-current grid overall coordinated control layer and the multi-convertor stationcoordinated control layer in the regional direct-current sub-grids. According to the direct-current grid hierarchical control system and the design method thereof provided by the technical schemes ofthe invention, the converter station main body control layer, the sub-grid coordinated control layer and the overall grid control layer are adopted, so that the multi-level effective coordination andcooperation of the control functions of a direct-current grid can be realized. The control system has the advantages of clear structure and explicit functions, and can ensure the safe and stable operation of the direct-current grid.

The invention belongs to the technical field of traffic safety, and particularly relates to an automatic emergency brake control method. However, a current automatic brake control technology cannot give consideration to both early warning time and a safety distance. The invention provides the automatic emergency brake control method. The method comprises the steps of formulating an automatic emergency brake control strategy, wherein the automatic emergency brake control strategy includes an automatic emergency brake control algorithm, a hierarchical control system and a braking force distribution sub-strategy; judging collision danger according to front target motion information and own vehicle motion information, and giving early warning and braking operations; adopting a collision time algorithm in an early warning period, and adopting a safe distance algorithm in a to-be-braked period; sequentially transmitting control signals to a first-layer controller and a second-layer controller so that a control effect and expectation are kept consistent as much as possible; and generating a braking force through the braking force distribution sub-strategy so that automatic braking is achieved. And the safety is ensured, and meanwhile, over-urgent braking is avoided.

The invention relates to an MMC-based power electronic transformer system and a hierarchical control system architecture thereof. A master + slave + valve three-layer control architecture is adopted,each phase of bridge arm in the MMC converter corresponds to one slave controller, so that the control of the phase of bridge arm is specially realized, the synchronous control of the neutron modulesbelonging to the same phase of bridge arm is realized, the synchronization problem of the neutron modules belonging to the same phase of bridge arm is reliably ensured, and the control reliability ofthe system is improved. Moreover, the control layering is reasonable, the master controller does not perform excessive centralized control any more, and a part of control tasks are shared by the slavecontrollers, so that the system fault redundancy and the control reliability are improved. Besides, the control functions of each layer are clearly distributed, so that when each link controlled by the system fails, the fault can be quickly inquired and maintained according to levels, and the reliability of the system is improved. Furthermore, the arranged slave controllers can expand the valve controller, so that the expandability is high, the time period of later development can be shortened, and it is guaranteed that the system can be applied to higher-voltage and high-power occasions.

The invention discloses a control system for a virtual power plant. The control system comprises a hierarchical control system; the hierarchical control system comprises a first-stage control system,a second-stage control system, a third-stage control system and a fourth-stage control system. According to the control system for the virtual power plant , on the basis of the operation characteristics of the virtual power plant, a virtual power plant hierarchical control strategy based on different time scales is provided; and therefore, the problem that it is difficult for the virtual power plant to realize droop coefficient-based reactive power distribution of each micro-source, the problem of poor electric energy quality and the problem that a system does not have a global regulation capability, and other problems can be solved through the hierarchical control system on different time scales and control levels; and the virtual power plant has a global coordination control capability while maintaining a certain local control capability.

A system for routing data in an automatic identification system includes an event management system (EMS), a real-time in-memory data structure (RIED) coupled to the EMS, the RIED for storing event information gathered by the EMS and a task management system (TMS) for ensuring that the RIED is updated by one transaction at a time. With this particular arrangement, a system for managing a large number of real-time events is provided. In one embodiment, the control system can be provided in a distributed hierarchical arrangement. The EMS of each control system can include filters which limit the amount of information provided to the next level in the hierarchy. In this manner the hierarchical control system network acts as a high volume data collector and processor. In some embodiments a level of the hierarchy can be removed spatially and/or temporally from an adjacent level in the hierarchy. This approach results in an intelligent network and also lends itself to scalability. By including optional filters and queues in the EMS, the EMS can be configured as desired.

The invention discloses a control performance verification method suitable for a large-scale hierarchical control system. The control performance verification method comprises the specific steps of 1,setting up overall architecture for control performance verification; 2, establishing a software and hardware equipment test model; 3, establishing a software test model with reconfigurable control logic; 4, performing software and hardware parameterization configuration and quick construction of a control system; and 5, automatically testing control performance indexes. According to the method,software and hardware equipment with different control performance and system services with different control logics are simulated from the perspectives of function and performance, and the large-scale hierarchical control system is built through parametric configuration, so that whether the control performance and software and hardware resources of the large-scale hierarchical control system meetthe requirements or not is judged quickly, and the control performance verification efficiency of the large-scale complex device control system is greatly improved.

The invention discloses a space-time hierarchical control method for vertical displacement of an earth pressure balance shield construction stratum. The space-time hierarchical control method comprises the following steps: (1) arranging measuring points of a monitoring site; (2) establishing a three-dimensional numerical model of shield construction stratum displacement, and dividing a transverse influence zone, a vertical influence layer and a longitudinal influence stage in combination with ground surface settlement and stratum layering vertical displacement data monitored on site; (3) dividing a shield gap into an excavation gap and a shield tail gap, and establishing a space-time hierarchical control system of the stratum vertical displacement influence factors; and (4) taking corresponding treatment measures according to the fact that the existing structure is located in different influence areas. Displacement data are sorted and analyzed to find out a space-time development law of vertical displacement of the stratum, a space-time grading and dividing system is provided, effective control measures can be correspondingly adopted according to the zoning position of an existing structure and different stages of earth pressure balance shield construction, stratum vertical displacement is accurately controlled, so that safe tunneling and passing of the earth pressure balance shield are achieved.

The invention discloses a hierarchical control system for a distributed space power supply system. The hierarchical control system is suitable for the distributed space power supply system based on standard power building blocks. The system comprises a top-layer controller, a middle-layer controller, a bottom-layer controller and a data transceiving unit; wherein the top-layer controller, the middle-layer controller and the data transceiving unit are arranged in an OBC (on-board computer), and the top-layer controller is responsible for task analysis, power generation prediction, power flow optimization and the like. The middle-layer controller is responsible for bus voltage steady-state offset adjustment, power and mode setting, fault processing and the like. The bottom layer controller is arranged in an intelligent control unit of the standard intelligent power building block. The reliability of load power supply is ensured while global power flow optimization is realized through a hierarchical control strategy. The control strategy integrates the advantages of centralized control and distributed control, so that the system can still work normally under OBC and communication faults, and high robustness is achieved.

The invention relates to the field of network traffic data monitoring, in particular to a hierarchical control and monitoring system of network traffic data. The system combines centralized network traffic data monitoring and distributed network traffic data monitoring in an optimizing mode and achieves hierarchical control and monitoring of the network traffic data based on the social Agent. By utilizing the local self-organization of the Agent, the system completes the monitoring of and the control over the network traffic data through cooperation. According to the hierarchical control, the system is sequentially composed of a basis building Agent, a behavioral control Agent, an autonomously-coordinating Agent and a social organization Agent, wherein the basis building Agent and the behavioral control Agent serve as the executive level, the autonomously-coordinating Agent serves as the coordination level, and the social organization Agent serves as the organization level. The system can be independently distributed on the network, perform deploying conveniently and effectively monitor the traffic data; when monitoring nodes are inserted into the network, the original topological structure of the network does not need to be changed; new functions can be developed for the system based on the Agents and new lower-level function modules can be added to adapt to the development of the basic network structure.

A live-line ice and snow removal device of power equipment comprises a control box, wherein a control box main power supply, a heater hierarchical control system, a frequency converter control unit and a frequency conversion fan are arranged in the control box, the control box main power supply is connected with the heater hierarchical control unit and the frequency converter control unit, the frequency converter unit is connected with the frequency conversion fan, an air outlet of the frequency conversion fan is connected with one end of an insulation hose, the other end of the insulation hose penetrates through the control box and is connected with one end of an insulation pipe, a spraying head is arranged at the other end of the insulation pipe, an electrical heating device is arrangedin the insulation pipe, and the heater hierarchical control unit is connected with the electrical heating device. By the live-line ice and snow removal device, accumulated snow can be conveniently removed, the numbers of heaters which are input can be selected according to a condition, the frequency converter control unit is adjusted to control an air speed of the frequency conversion fan according to equipment and accumulated ice conditions, so that the accumulated ice is conveniently removed. The live-line ice and snow removal device is high in safety and has extremely high convenience on the power equipment, a tool is convenient to carry and assemble, and no secondary pollution on surrounding equipment is generated.

The invention provides a lower limb prosthesis hierarchical control system and method based on healthy side leg multi-source information, which comprises a man-machine system module, a sensing system module, a signal preprocessing module and a hierarchical controller. The sensing system module is mounted on one side of a healthy leg of a human body of the man-machine system module; the hierarchical controller is composed of a top-layer controller module, a middle-layer controller module and a bottom-layer controller module. The input end of the signal preprocessing module is the signal output of the sensing system module, and the output of the signal preprocessing module is divided into two parts which are respectively connected with the top-layer controller module and the middle-layer controller module; the output of the top-layer controller module is connected with the middle-layer controller module; the output of the middle-layer controller module is connected with the bottom-layer controller module; and the bottom-layer controller module and the prosthesis side of the man-machine system module perform bidirectional interaction. According to the invention, the gait discrete switching of different gait types in actual use can be realized, and the walking speed can be continuously adjusted in real time according to the human body intention in the same gait period.

The invention discloses an energy-saving automatic building control system, and relates to the technical field of building control. According to the technical scheme, the energy-saving automatic building control system comprises a centralized control system and hierarchical control systems, wherein the hierarchical control systems are corresponding to each office section in the building; each hierarchical control system comprises a personnel detection module used for detecting whether a person exists in each office section and a personnel control module used for controlling whether a primary power supply in the office section is closed or not; the centralized control system comprises a control center and a control terminal; the personnel control module transmits information of whether theperson exists in the office section and whether to close the primary power supply to the control center and displays the information in the control terminal; if the personnel detection module detectsthat no person exists in the office section, the personnel control module closes the primary power supply of the corresponding office section and sends the information to the control center, and the control terminal displays the information about closing of the primary power supply and the information about no person. The system has an effect of reducing the power consumption of the building.

The invention discloses an input saturation adaptive hierarchical control system and method for an overdriven unmanned vehicle. The input saturation adaptive hierarchical control system is provided with a sensing module, an input saturation approximation module, an adaptive terminal neural sliding mode upper-level control module and a lower-level control distribution module. The upper-level control module comprises a parameter adjustment law, a neural network estimator and an adaptive terminal sliding mode controller. The control method comprises the following steps that the surrounding driving environment information and vehicle state information are collected, and a non-linear dynamic model describing the overdriven unmanned vehicle with saturated input and parameter uncertainty characteristics is established; the adaptive terminal neural sliding mode upper-level control module for the overdriven unmanned vehicle is designed to overcome nonlinearity and parameter uncertainty, and thegeneralized force/moment required by the motion of the overdriven unmanned vehicle is dynamically programmed; and a lower-level control distributor for the overdriven unmanned vehicle is designed based on tire load rate optimization, and the optimal tire force of each actuator is dynamically programmed according to the expected generalized force/moment given by the upper-level controller.