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651results about How to "Extended cycle" patented technology

Method for processing high-temperature alloy furnace tube

ActiveCN101565807AStrong combinationMitigation of catalytic cokingSolid state diffusion coatingProduct gasMetallurgy
The invention relates to a method for processing a high-temperature alloy furnace tube, which comprises the following steps: controlling the pressure of low-oxygen partial pressure gas to 0-3 atmospheric pressure; introducing the low-oxygen partial pressure gas into an atmosphere furnace provided with the high-temperature alloy furnace tube; raising the temperature to between 600 and 1,100 DEG C; keeping the temperature for 5 to 80 hours; and forming an oxidized protective layer on the surface of the high-temperature alloy furnace tube to obtain the processed high-temperature alloy furnace tube, wherein the low-oxygen partial pressure gas comprises one or two kinds of H2 and CO, and water vapor accounting for 0.17 to 2 percent of the volume fraction of the low-oxygen partial pressure gas. The method for processing the high-temperature alloy furnace tube is adopted to process a furnace tube of a hydrocarbon cracking furnace and the like, so that the compact and stable oxidized protective layer on the surface of the furnace tube, and the requirement for long-term use can be met; and the method can inhibit or retard the phenomena of catalysis and coking, reduces the carburization degree of the furnace tube, and prolongs the decoking cycle and the service life of the furnace tube.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Negative pole sheet, preparation method thereof, lithium ion battery, preparation method of lithium ion battery and application of lithium ion battery

The invention belongs to the field of batteries and provides a negative pole sheet, a manufacturing method thereof, a lithium ion battery, a preparation method of the lithium ion battery and application of the lithium ion battery. The negative pole sheet comprises a negative pole current collector and negative pole active material layers coating the surface of the negative pole current collector;the negative pole active material layers comprise three layers distributed from inside to outside; the particle sizes of the negative pole active materials of the three negative pole active material layers are different and are sequentially increased from inside to outside; the negative pole active material of the first negative pole active material layer is artificial graphite having D50 of 5-10micrometers; the negative pole active material of the second negative pole active material layer is artificial graphite having D50 of 8-12 micrometers; and the negative pole active material of the third negative pole active material layer is artificial graphite having D50 of 10-15 micrometers. The lithium ion battery provided by the invention can realize rapid charging of 3.2 C or above; the massenergy density of the battery is higher than 260Wh/kg; the capacity retention ratio of the battery under the condition of 2000 times of 3.2 C quick charging is more than 80%; and the requirements of electric vehicles on quick charging enabling 80% SOC within 15 min, high endurance and a long life cycle are met.
Owner:FARASIS TECH (GANZHOU) CO LTD

Chip software and hardware simulation environment based on UVM and FPGA

The invention discloses a chip software and hardware simulation environment based on the UVM and the FPGA. The simulation environment comprises an FPGA verification platform, a UVM verification platform and an IP standard model. The IP standard model is connected with the FPGA verification platform, and the FPGA is driven to perform simulation verification and sends the FPGA verification result as scene environment configuration to the UVM verification platform. The UVM verification platform is connected with the IP standard model and calls an algorithm in the IP standard model to perform UVM simulation verification to the FPGA verification result. According to the chip software and hardware simulation environment based on the UVM and the FPGA, the IP standard model is connected with the FPGA verification platform and the UVM verification platform, and the software and hardware simulation environment which performs FPGA verification and UVM verification simultaneously is prepared. The FPGA verification focuses on the chip application layer and completes verification of a chip code to a lot of random excitation scenes; the UVM verification focuses on the chip bottom layer and performs further verification to the FPGA verification result by directly calling the algorithm in the IP standard model; the two kinds of verification are mutually matched, the verification period of the chip is accelerated, and the chip verification quality is improved.
Owner:ZHUHAI HUGE IC CO LTD

Locomotive semi-physical simulation device, system and method

ActiveCN105223832ADoes not affect the real-time performance of the simulationScale upSimulator controlElectric testing/monitoringComputer hardwareReal-time simulation
The invention discloses a locomotive semi-physical simulation device, system and method. The device comprises a real-time simulation unit, a computer and an electrical signal conversion unit. The computer converts a control instruction for simulating an upper-layer network control system into a bus communication protocol, and then sends the bus communication protocol to a communication conversion unit of the electrical signal conversion unit. The communication conversion unit sends the control instruction to an external physical controller, the physical controller outputs a control signal to a controlled object model according to the control instruction, the control signal is sent to a real-time simulation unit via the electrical signal conversion unit, the real-time simulation unit calculates a output result of a state signal of the controlled object model according to the control signal, the output result is sent to the physical controller via the electrical signal conversion unit, and the physical controller sends the state signal of the controlled object model back to the computer via the communication conversion unit. The technical problems that simulation integrity and precision of an existing system are not high, function verification cannot be accurately performed, the modification period is long, and efficiency and performability are low are solved.
Owner:CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST

Method for estimating orbit control comprehensive efficiency and propellant consumption

The invention relates to a method for estimating orbit control comprehensive efficiency and propellant consumption. Based on the in-orbit calibrated disturbance torque on a satellite by an orbit control thruster during working, the method for estimating the orbit control comprehensive efficiency and the propellant consumption calculates out unexpected influences on the position of an orbit when other thrusters compensate for the disturbance torque. According to the unexpected influences on the orbit, working time of the orbit control thruster is corrected and the orbit control comprehensive efficiency of the orbit control thruster of the satellite is worked out. Propellant consumption and propellant surplus of the orbital maneuver are estimated. According to the method for estimating the orbit control comprehensive efficiency and the propellant consumption, when the satellite performs orbital maneuver in the X direction of an orbital coordinate system, determination of control parameters and estimation of propellant consumption can be more accurate, the precision of orbital maneuver of a medium-to-high orbit satellite is effectively improved and the service life of the satellite in the orbit is prolonged.
Owner:BEIJING INST OF CONTROL ENG

Multi-path shadow compound fading channel simulation device and work method thereof

ActiveCN103532644AComply with the characteristics of FPGA fixed-point operationCompatible with fixed-point arithmetic featuresTransmission monitoringNetwork planningMathematical modelIntermediate frequency
The invention relates to a multi-path shadow compound fading channel simulation device and a work method thereof. First, a universal compound fading mathematical model is provided based on the comprehensive consideration of the compound influence of path losses, shadow fading and multi-path fading. Then, the multi-path fading, the shadow fading and channel noise in the model are decomposed into a Gaussian random process expression form and generated by an SoS (Second-Order Section) fixed-point model in a unified simulation way. The simulation method conforms to FPGA-based (Field Programmable Gate Array) fixed-point operation characteristics and is easy to realize. The simultaneous simulation of an uplink and a downlink is supported by a simulation system. Two input interfaces are available for selection, and radio frequency simulation signals or intermediate frequency simulation signals are input through the input interfaces. Parameters about communication scenes and the like are input by a user through a PC (Personal Computer), the feature parameters of the compound fading channel under the scenes are calculated by a DSP (Digital Signal Processor) in real time, and the feature parameters are utilized by the FPGA to carry out hardware simulation. Output simulation signals passing a wireless channel also comprise intermediate frequency signals and radio simulation signals. The multi-path shadow compound fading channel simulation device and the work method thereof are used in land-land mobile communication scenes, and can also be used in air-land (land-air) and air-air communication fading channel scenes.
Owner:上海知白智能科技有限公司

Express delivery method and system for taxis

InactiveCN105160511ASolve the problems of long express cycle and low efficiencyMitigating Issues Affected by Ride-Hailing AppsLogisticsMarketingPaymentLogistics management
The invention discloses an express delivery method and system for taxis. The method comprises: a. a user sending a goods delivery order to a taxi dispatching platform; b. the dispatching platform calculating express expense, and the user selecting a mode of payment when receiving goods or payment on delivery; c. the dispatching platform selecting multiple taxis and pushing the order to the selected taxis; d. the selected taxis receiving the order, competing for the order, and uploading the order to the dispatching platform; e. the dispatching platform selecting one taxi to execute the order, and sending an instruction message to the taxi and the user; f. a driver receiving and delivering the goods according to the order, and uploading a goods delivery fulfillment message; g. the dispatching platform sending an order fulfillment message to a mobile communication device of the user; and h. the user paying the delivery expense online. The system comprises the taxi, the taxi dispatching platform, a vehicle-mounted mobile device, the user and the mobile communication device. According to the method and the system, the influence of taxi-taking software on the taxi can be effectively reduced, and the logistics efficiency of express industry is improved.
Owner:SHENZHEN BASEKING TECH

Micro-foaming wood plastic composite sheet and preparation method thereof

The invention relates to a wood plastic material and particularly relates to a micro-foaming wood plastic composite sheet and a preparation method thereof. The method provided by the invention comprises the following steps: evenly mixing polyvinyl chloride, nano-montmorillonite, calcium carbonate powder, white oil, a heat stabilizer and mica powder are uniformly stirred; and then carrying out extruding pelletization to obtain modified plastic particles; and then uniformly stirring the modified plastic particles with wood meal, azobisformamide, a foaming regulator, chlorinated polyethylene andan ultraviolent absorbent, and performing extrusion and foaming formation to obtain the micro-foaming wood plastic sheet. The micro-foaming wood plastic sheet has high degree of mechanization and lowcost, is lower in density, less in plastic amount and more environmentally-friendly compared with plastic sheets, is lower in density and higher in impact strength compared with other wood plastic materials, is lower in weight and cost and more convenient in installation and maintenance compared with gypsum boards, aluminum pinch plates and the like, and also has an air purification function. Themicro-foaming wood plastic sheet can be manufactured into products, such as photo frames, picture frames, skirtings, hangers and pinch plates and the like, and is widely applied to plenty of occasions, such as halls, guest houses, small offices and the like.
Owner:扬州润友复合材料有限公司

Signal control optimization method of bus transit lane at single-point intersection

InactiveCN110009918AConditions take precedenceImprove signal control schemeControlling traffic signalsArrangements for variable traffic instructionsBus laneGreen-light
The invention discloses a signal control optimization method of a bus transit lane at a single-point intersection. The signal control optimization method disclosed by the invention comprises the following steps: calculating an average vehicle delay at an intersection based on the Webster intersection delay analysis method; respectively solving a bus delay and a social vehicle delay, performing weighted averaging, and establishing an intersection comprehensive delay model after a bus weight is given; establishing a single-point intersection signal control model based on the minimum comprehensive delay; and designing a scheme of guiding the vehicles to accelerate / decelerate to arrive at the intersection at proper moments in combination with an optimized signal period time length and an optimized green light time length. According to the signal control optimization method disclosed by the invention, the minimum average vehicle delay is taken as the optimization target of the signal control, and based on the driving characteristics of bus fleets, the bus fleets can pass through the intersection, thereby realizing the priority of the buses and improving the traffic efficiency of the buses at the intersection.
Owner:WUHAN UNIV OF TECH
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