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58results about How to "Reduce ineffective loss" patented technology

Vehicle multi-objective coordinated self-adapting cruise control method

InactiveCN101417655AEnhance the feeling of following the carGood following experienceLoop controlDriver/operator
The invention relates to a multi-objective coordination-typed self-adaptive cruise control method for a vehicle, comprising the following steps: 1) according to the detail requirements of the multi-objective coordination-typed self-adaptive cruise control for a vehicle, the performance indicators and I/O restriction of MTC ACC are designed, and multi-objective optimization control problem is established; and 2) MTC ACC control law rolling time domain is used for solving the objective optimal control problem, and the optimal open-loop control quantity is used for carrying out feedback and achieving closed-loop control. Based on the steps, the control method comprises the following four parts of contents: 1. the modeling for the longitudinal dynamics of a traction system; 2. the performance indicators of MTC ACC; 3. the I/O restriction design of MTC ACC; and 4. solution by the MTC ACC control law rolling time domain. By constructing multi-objective optimization problem, the control method not only solves the contradiction among the fuel economy, the track performance and the feeling of the driver, moreover, on the same simulation conditions, compared with the LQ ACC control, the control method simultaneously reduces the fuel consumption and vehicle tracking error of the vehicle, and achieves the multi-objective coordinating control function.
Owner:TSINGHUA UNIV

Detection device of dissolved gases in transformer oil based on infrared spectrum absorption

ActiveCN104914066ADoes not consume dissolvedReduce volumeMaterial analysis by optical meansFiberInfrared
The invention belongs to the technical field of electric-power equipment detection, and in particular, relates to a detection device of dissolved gases in transformer oil based on infrared spectrum absorption. The device includes a light source system unit, a sensing arrangement unit and a detection acquisition and analysis unit; the light source system unit is composed of a high-power supercontinuum broadband light source, a light source controller and a photoswitch and is used for realizing output multiplexing control of the light source; the sensing arrangement unit is formed by arranging one sensing path of fiber Bragg grating hydrogen sensor series-connection wavelength division multiplexing and the other one sensing path of hollow photonic crystal optical fiber internal spectrum absorption sensing in a cavity body of an oil-immersed power transformer; the detection acquisition and analysis unit is composed of a wavelength demodulation device, a light intensity detector and a data acquisition and analysis device, the wavelength offset and the spectral absorption intensity of fiber Bragg grating hydrogen sensors are detected, and the data acquisition and analysis device records data and types and contents of corresponding fault gases are obtained by calculation; and on the basis, insulation conditions of the transformer oil are evaluated, positioned, analyzed and forecasted.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1

Mobile terminal control method and system based on earphones, and mobile terminal

The invention relates to the technical field of mobile terminal control and discloses a mobile terminal control method and system based on earphones, and a mobile terminal. The mobile terminal control method based on the earphones comprises the following steps: when the earphones are accessed to the mobile terminal, an earprint acquisition module of the earphones acquiring earprint features of a user; when the earprint acquisition module of the earphones cannot acquire the earprint features of the user, controlling to close a screen and stop playing multimedia; and when the earprint acquisition module of the earphones acquire the earprint features of the user, controlling to open the screen and continuously play the multimedia. According to the invention, whether the earphones are worn by the user is determined according to whether the earprint acquisition module of the earphones can acquire the earprint features of the user, and whether to open or close the screen and continuously play the multimedia is automatically and intelligently controlled, such that the endurance capabilities of the mobile terminal and the earphones are improved, the durability and the service lives of the mobile terminal and the earphones are prolonged, and intelligence and application convenience of the mobile terminal are improved.
Owner:PHICOMM (SHANGHAI) CO LTD

Multi-rotor unmanned aerial vehicle route planning and aerial photography method suitable for strip-shaped measuring area

ActiveCN111650962AShorten take-off and landing timesReduced redundancy coveragePosition/course control in three dimensionsUncrewed vehicleAerial photography
The invention discloses a multi-rotor unmanned aerial vehicle route planning and aerial photography method suitable for a strip-shaped measuring area, and relates to the technical field of unmanned aerial vehicle autonomous control. In order to solve the problem that in the prior art, when an unmanned aerial vehicle is used for surveying and mapping a strip-shaped area, excessive flight sortie exists, the electric quantity loss of the unmanned aerial vehicle is serious, by adopting the method, the line segment route planning problem of the multi-rotor unmanned aerial vehicle in the irregular strip-shaped measuring area can be solved; the flight sortie can be reduced on the premise of ensuring the availability of flight results; take-off and landing time of an airplane is shortened, invalidloss of an airplane battery is reduced, the working efficiency of field flight personnel is improved, the redundancy coverage rate of the airline is reduced, the effective rate of the airline is increased, and the ortho-image mapping precision is improved in a parallel airline mode, so that the flight cost of a project is reduced, and the economic benefit of the project is improved.
Owner:自然资源部第二地理信息制图院

Vehicle multi-objective coordinated self-adapting cruise control method

The invention relates to a multi-objective coordination-typed self-adaptive cruise control method for a vehicle, comprising the following steps: 1) according to the detail requirements of the multi-objective coordination-typed self-adaptive cruise control for a vehicle, the performance indicators and I / O restriction of MTC ACC are designed, and multi-objective optimization control problem is established; and 2) MTC ACC control law rolling time domain is used for solving the objective optimal control problem, and the optimal open-loop control quantity is used for carrying out feedback and achieving closed-loop control. Based on the steps, the control method comprises the following four parts of contents: 1. the modeling for the longitudinal dynamics of a traction system; 2. the performanceindicators of MTC ACC; 3. the I / O restriction design of MTC ACC; and 4. solution by the MTC ACC control law rolling time domain. By constructing multi-objective optimization problem, the control method not only solves the contradiction among the fuel economy, the track performance and the feeling of the driver, moreover, on the same simulation conditions, compared with the LQ ACC control, the control method simultaneously reduces the fuel consumption and vehicle tracking error of the vehicle, and achieves the multi-objective coordinating control function.
Owner:TSINGHUA UNIV

Method, device and equipment for controlling unmanned aerial vehicle and storage medium

The embodiment of the invention discloses a method, device and equipment for controlling an unmanned aerial vehicle and a storage medium. The method comprises the steps of receiving a mode switching instruction sent from a first control terminal and controlling the unmanned aerial vehicle to enter a power-saving flight mode corresponding to the mode switching instruction; determining to-be-closedmodules corresponding to the unmanned aerial vehicle in the power-saving flight mode and generating a corresponding mode closing instruction, wherein the to-be-closed modules are non-essential functional modules of the unmanned aerial vehicle when flying in current flight state; and controlling the to-be-closed modules to be closed through the module closing instruction to make the to-be-closed modules stop working. The functional modules which are irrelevant to keeping normal flight of the unmanned aerial vehicle on the unmanned aerial vehicle can be closed through being switched into the power-saving flight mode, thereby reducing invalid loss of battery power, prolonging the battery life and simultaneously reducing the risk that the unmanned aerial vehicle cannot return or even crashes due to low battery power.
Owner:SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD

Advanced triggering smoking set heating control method

PendingCN112754084ALower maintenance temperatureImprove the suction experienceTobaccoThermodynamicsEngineering
The invention discloses an advanced triggering smoking set heating control method, which comprises the following steps: carrying out self-calibration on a heating non-combustion appliance to obtain a standard temperature measurement resistor end voltage value; in the preheating stage, preheating a heating core to a to-be-heated temperature; in the to-be-heated stage, keeping the temperature of the heating core at the to-be-heated temperature; in the advanced heating stage, in response to an advanced heating signal, heating the heating core to a heating temperature in advance; in the heating stage, in response to a suction signal, keeping the temperature of the heating core at the heating temperature by a threshold preset heating duration; after the heating temperature of the heating core is kept at the threshold preset heating duration, stopping heating, and cooling the heating core to the to-be-heated temperature; and repeating the processes of waiting for heating, advanced heating, heating and cooling until suction is finished. According to the advanced triggering smoking set heating control method, the heating effect of the heating smoking set is ahead of the actual smoking action of the user, the smoking experience of the user is improved, the maintaining temperature of the non-heating stage of the smoking set is greatly reduced, and the invalid loss of energy of the smoking set is reduced.
Owner:CHINA TOBACCO HENAN IND

Cross-surface complex paving unified design method based on cloud computing

The invention discloses a cross-surface complex paving unified design method based on cloud computing, and the method specifically comprises the steps: paving surface selection: a user selects a surface or surface group needing to be designed through a browser or a client, determines the selected surface or surface group in an interactive or non-interactive mode, and confirms the unified paving design of a target surface or surface group; judging a paving surface, namely screening and judging the selected surface or surface group by the system, and determining a paving route, and the step comprises the procedure that if a paving face is judged to be in a single-face paving design, the paving face is degraded to an existing single-face paving scheme design logic in a system, and the systemguides a user to conduct design and finally enters a subsequent use link; if the paving surface is judged to be a multi-surface paving design, entering a cross-surface paving scheme design process; and finally, previewing, rendering, constructing a drawing and calculating a bill of materials. By using the method, cross-surface complex paving scheme design can be relatively efficiently supported, and cross-surface material processing between surfaces can be automatically adapted.
Owner:HANGZHOU QUNHE INFORMATION TECHNOLOGIES CO LTD

Lubricating device capable of automatically dropping liquid

The invention discloses a lubricating device capable of automatically dropping liquid, and relates to the field of lubricating devices. The lubricating device comprises: a tank body, wherein a driving motor is fixedly connected to the middle of the right side wall of the tank body; a stirring mechanism which is rotationally connected to the middle part of the inner cavity of the tank body; a filtering mechanism which is fixedly connected to the middle part of a liquid adding pipe; and an intermittent mechanism which is arranged on the right side of the bottom of the tank body. A telescopic rod is driven by a rotating shaft to rotate, the telescopic rod and a trigger sliding block are made to slide in an abutting mode, so that the trigger sliding block drives a movable plate to slide;, when the movable plate slides, a communicating pipe slides in a second sliding groove along with the movable plate, and finally the communicating pipe is communicated with a liquid dropping opening; and through the sliding effect between the sliding groove and a dropping pipette, the dropping pipette is communicated with the communicating pipe, so that the automatic dropping process is completed, the requirement for labor is greatly reduced, and the economic benefits of enterprises are improved.
Owner:HUANENG JIAXIANG POWER GENERATION CO LTD

Preparation method and application of rare earth vanadate two-dimensional nanosheet photocatalytic material

The invention belongs to the field of two-dimensional material synthesis, and particularly relates to a preparation method and application of a rare earth vanadate two-dimensional nanosheet photocatalytic material. The preparation method comprises the steps: mixing a proper amount of rare earth nitrate and NH4VO3 in deionized water, carrying out ultrasonic treatment till complete dissolution is achieved, adding an organic template agent polyvinylpyrrolidone under heating and magnetic stirring conditions, adjusting the pH value of the solution to 1-4 by using an inorganic acid, then transferring the mixed solution into a high-pressure kettle, and reacting under a microwave hydrothermal condition; and after naturally cooling to room temperature, centrifugally collecting the obtained precipitate, washing, and drying to obtain the rare earth vanadate two-dimensional nanosheet material. According to the invention, the obtained two-dimensional rare earth vanadate has an ultrathin structure and a large specific surface area, provides abundant reaction sites for catalytic reaction, has a good up-conversion effect, fully absorbs and utilizes near-infrared light, and has an excellent effect of synthesizing ammonia by photocatalytic nitrogen fixation.
Owner:江苏纳欧新材料有限公司

Intracavity frequency doubling enhanced laser

The present invention provides an intracavity frequency doubling enhanced laser. The laser comprises a first reflector, an SHG characteristic crystal, a THG characteristic crystal, a second reflector and a third reflector; the second reflector is configured to reflect the first frequency doubling light and the second frequency doubling light propagated in the THG characteristic crystal, the first frequency doubling light and the second frequency doubling light are reflected on a Brewster angle plane to the interior of the THG characteristic crystal, and the frequency doubling light to be reflected of the THG characteristic crystal is transmitted out; the third reflector is configured to reflect the first frequency doubling light and the second frequency doubling light propagated in the THG characteristic crystal, the first frequency doubling light and the second frequency doubling light are reflected on the Brewster angle plane, and the frequency doubling light to be reflected of the THG characteristic crystal is transmitted out; and the frequency doubling light to be used for refraction and the frequency doubling light to be used for reflection is recycled in the light path reversibility mode to the THG characteristic crystal for sum frequency, the frequency doubling light which fully employs the intracavity frequency doubling of the ultraviolet laser is recycled to reduce the invalid loss of the laser so as to maximize the sum frequency efficiency, and the recycled frequency doubling light can perform multi-time sum frequency so as to increase the power output of the ultraviolet light.
Owner:BEIJING GK LASER TECH

Device for preparing carbon-doped chemical vapor deposition tungsten coating

The invention relates to the technical field of chemical vapor deposition, in particular to a carbon-doped chemical vapor deposition tungsten coating device which comprises an activation recovery furnace and a deposition furnace which are communicated with each other, and an activation area and a tail gas recovery area on the peripheral side of the activation area are arranged in the activation recovery furnace; one end of the activation area is connected with a first air inlet pipe, and the other end of the activation area is connected with the air inlet end of the deposition furnace through an activation pipeline; one end of the tail gas recovery area is connected with a recovery pipeline and a fourth gas inlet pipe, the other end of the tail gas recovery area is connected with a tail gas treatment mechanism, and the recovery pipeline is connected with the exhaust end of the deposition furnace; a gas mixing device and a deposition platform are arranged in the deposition furnace; the gas mixing device is respectively connected with the activation pipeline, the second gas inlet pipe and the third gas inlet pipe; heating devices are arranged in the activation recovery furnace and the deposition furnace, under the action of the heating devices, gas activation or tail gas recovery is performed in the activation recovery furnace, and coating deposition is performed in the deposition furnace, so that the reaction cost and loss are reduced.
Owner:XIAMEN TUNGSTEN
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