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345 results about "Order control" patented technology

Direct drive fan system with variable process control

The present invention is directed to a direct-drive fan system and a variable process control system for efficiently managing the operation of fans in a cooling system such a as wet-cooling tower or air-cooled heat exchanger (ACHE), HVAC systems, mechanical towers or chiller systems. The present invention is based on the integration of key features and characteristics such as tower thermal performance, fan speed and airflow, motor torque, fan pitch, fan speed, fan aerodynamic properties, and pump flow. The variable process control system processes feedback signals from multiple locations in order control a high torque, variable speed, permanent magnet motor to drive the fan. Such feedback signals represent certain operating conditions including motor temperature, basin temperature, vibrations, and pump flow rates. Other data processed by the variable process control system in order to control the motor include turbine back pressure set-point, condenser temperature set-point and plant part-load setting. The variable process control system processes this data and the aforesaid feedback signals to optimize the operation of the cooling system in order to prevent disruption of the industrial process and prevent equipment (turbine) failure or trip. The variable process control system alerts the operators for the need to conduct maintenance actions to remedy deficient operating conditions such as condenser fouling. The variable process control system increases cooling for cracking crude and also adjusts the motor RPM, and hence the fan RPM, accordingly during plant part-load conditions in order to save energy.
Owner:PRIME DATUM

Multi-robot formation method based on Ad-Hoc network and leader-follower algorithm

ActiveCN102096415ARealize real-time formation controlSolve the problem of poor adaptability and inability to avoid obstacles wellPosition/direction controlMassive gravityInformation feedback
The invention discloses a multi-robot formation method, belonging to the field of intelligent control. The method comprises the following steps of: controlling the whole formation motion trail by the leader motion trail, firstly, determining a kinematics model of the leader, and determining the direction of the motion of the leader according to a resultant force of a repulsive force and a gravitational force; creating a motion model of following the leader by the follower, following the leader by the follower according to certain distance and angle, and determining the motion trail of the follower according to a motion model created by the artificial potential field; introducing an AdHoc between the leader and the follower, creating information feedback, and ensuring that no loss occurs in the process of following the leader by the follower. With the method provided by the invention, a multi-robot system can successfully avoid obstacles in the process of finishing tasks to reach a target point, and also can keep initial order in the whole process, implement real-time order control on multiple robots and be more suitable for some occasions where multiple robots are needed for finishing tasks (such as transporting, rescuing and the like) synchronously.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Comprehensive management system for platform and load integrated satellite

The invention provides a comprehensive management system for a platform and load integrated satellite and relates to the technical field of aerospace aviation. The problems that the resource use rate is low and extendibility can not be achieved due to the fact that a distributed type satellite-borne computer design method is adopted in an existing satellite electronic system are solved. The comprehensive management system for the platform and load integrated satellite comprises an integrated comprehensive control unit and a standard function extension unit. The standard function extension unit is interconnected with the integrated comprehensive control unit through an external CAN bus. The integrated comprehensive control unit is composed of a comprehensive management module, a communication interface module, a secondary power source and an arbitration logic control module. The standard function extension unit comprises an order control panel, an active temperature control panel and a mechanism control panel. According to the comprehensive management system, resources are integrated, the number of single machines and elements is reduced, orders are integrated, the order types and forwarding links are reduced, telemetering is integrated, redundant telemetering is reduced so that the bandwidth can be increased, functions are integrated, test links and test procedures are reduced, performance is integrated, and the size, the weight and power consumption of equipment are reduced.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Traffic management method based on vehicle-to-infrastructure integration technology

A traffic management method based on vehicle-to-infrastructure integration technology comprises the following steps of S1, acquiring motion data of all vehicles which are connected with a road-side unit in a vehicle-to-infrastructure technology (V2I) communication mode; S2, detecting whether an abnormal event occurs, and determining the type of the abnormal event; S3, when the abnormal event is a traffic accident, executing a step S4; S4, extracting the position and the speed of all vehicles in a traffic accident range in a preset time period; S5, calculating an average vehicle speed V in the traffic accident range; S6, comparing for determining whether the average vehicle speed V is smaller than a preset least vehicle speed V_min, if yes, performing a step S18, and otherwise, performing a step S7; ....; and S12, calculating the number sumi of queuing vehicles of each lane behind a first parking line and sequencing the numbers sumi from highest to lowest, and dynamically distributing passing time length of each lane according to the sumi. The traffic management method has beneficial effects of high traffic management efficiency, no manpower resource consumption and low danger coefficient. The traffic management method has functions of dynamically distributing lanes for the vehicles, improving traffic operation efficiency, performing ordered control on the vehicles at a crossing, and effectively reducing traffic accident rate at the crossing.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST

Method and device for performing electric magnetization resistance welding-braze welding compounding on dissimilar materials

The invention discloses a method and a device for performing electric magnetization resistance welding-braze welding compounding on dissimilar materials by assistance of an applied magnetic field. In the process of performing resistance welding-braze welding on the dissimilar metal material, a liquid solder is subjected to auxiliary electromagnetic stirring and ordered control, and the molten liquid solder is subjected to the reinforced booster action of electromagnetic stirring and electric magnetization by using an external applied alternating magnetic field which is generated by a magnet exciting coil in a welding area so as to promote directional flow of the liquid solder, and rupture of membranes, wetting, spreading and diffusion of the liquid solder on the surface of the metal material with a higher melting point, promote the liquid solder and a base metal which is molten by the metal material with a lower melting point to be mixed fully, promote interdiffusion of elements and compositions between the solder and the base metal and alloying between the two, improve uniformity of compositions of a soldered seam, reduce the weld defects, optimize the texture and the performance of the soldered seam, and improve the resistance soldered joint; and the device has the advantages of simple structure, flexible application, lower cost, good effect, and easy implementation.
Owner:CHONGQING UNIV

Express item delivery method, intelligent express cabinet and server

The invention belongs to the technical field of electronic commerce, and provides an express item delivery method, an intelligent express cabinet and a server. The method comprises the steps that an intelligent terminal receives an express item delivery request input by a user and sends the express item delivery request to the server; when the server receives the express item delivery request, an express item delivery code and an order corresponding to the express item delivery code are generated, and the express item delivery code is sent to the intelligent terminal; after the intelligent express cabinet obtains the express item code, the server is searched for an order corresponding to the express item code, a bin is controlled according to the order to be opened so as to accept an express item, and ordering confirming information is sent to the server after the express item is accepted; the server executes an ordering operation according to the ordering confirming information, and ordering completing information is returned back to the intelligent terminal. Self-service expression item delivery is achieved, a user can perform self-service ordering, self-service payment and self-service express item delivery in the express item delivery process, contact with a courier and express item acceptance during meeting are not needed, and the expression item delivery convenience and efficiency are greatly improved.
Owner:SHENZHEN HIVE BOX TECHNOLOGY CO LTD
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