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292results about How to "Avoid intervention" patented technology

Method of simulating detailed movements of fluids using derivative particles

The method provides a new fluid simulation technique that significantly reduces the non-physical dissipation of velocity using particles and derivative information. In solving the conventional Navier-Stokes equations, the method replace the advection part with a particle simulation. When swapping between the grid-based and particle-based simulators, the physical quantities such as the level set and velocity must be converted. A novel dissipation-suppressing conversion procedure that utilizes the derivative information stored in the particles as well as in the grid points is developed. Through several experiments, the proposed technique can reproduce the detailed movements of high-Reynolds-number fluids, such as droplets / bubbles, thin water sheets, and whirlpools. The increased accuracy in the advection, which forms the basis of the proposed technique, can also be used to produce better results in larger scale fluid simulations.
Owner:SEOUL NAT UNIV R&DB FOUND

Refrigeration control system and method for data center

The invention provides a refrigeration control system and method for a data center. The system comprises a plurality of servers, a plurality of first temperature sensors, a controller and an air conditioner, wherein the plurality of first temperature sensors are mounted at air inlets of the plurality of servers and used for detecting air inlet temperatures of the plurality of servers in real time; the controller is used for receiving the detection temperatures sent by the plurality of first temperature sensors, calculating an average temperature in a data center according to the detection temperatures, and generating a control command according to the average temperature in the data center; and the air conditioner is sued for receiving the control command sent by the controller, and adjusting the working mode according to the control command. According to the system provided by the embodiment of the invention, on the premise that the cooling requirement safety of the servers is met, excessive refrigeration caused by an excessively cautious refrigeration control strategy as well as overheating of local servers caused by an excessively radical refrigeration control strategy can be avoided, and the refrigeration energy consumption and service failure rate are reduced greatly.
Owner:BEIJING BAIDU NETCOM SCI & TECH CO LTD

Method and device for damping pendulum oscillations of a trailer

A method for stabilizing a vehicle combination composed of a towing vehicle and a trailer or semitrailer, in which when a snaking motion of the trailer or semitrailer is detected, braking interventions are implemented for damping the snaking motion, in which symmetrical braking interventions are implemented first, and asymmetrical braking interventions are implemented if the desired subsidence behavior of the snaking motion is not achieved through the symmetrical braking interventions.
Owner:ROBERT BOSCH GMBH

Purifying method for ultra-pure aluminum

The invention relates to a purifying method for ultra-pure aluminum. The purifying method specifically comprises the following steps: injecting molten aluminum with purity being 4N6 into a cast iron crucible, and heating the molten aluminum by a heating wire on the outer wall of the cast iron crucible for preserving the temperature of the molten aluminum to be 680-700 DEG C; stretching seed crystals above the cast iron crucible into a position 2-3cm under the liquid level of the molten aluminum, and introducing cooling gas to the other ends of the seed crystals to cool and crystallize the molten aluminum; spirally rotating the seed crystals in the cast iron crucible, thereby enabling the molten aluminum to carry out rotary motion in the cast iron crucible; and after the crystallizing is ended, quickly pulling out the seed crystals with crystallized ingots, and finally enabling the crystal seeds and the formed crystallized ingots to be in shape of inverted mushroom. The purifying method has the advantages of greatly reducing the purifying cost, and greatly improving the purifying efficiency and the purifying purity, and is suitable for industrial production.
Owner:NANTONG TADE ELECTRONICS MATERIAL TECH

Actuator, optical scanner and image forming apparatus

An actuator includes: a first vibrating system having a frame-like driving member and a pair of first axis members holding the driving member from both sides so that the driving member is rotatable about an X axis; a second vibrating system having a movable plate provided inside the driving member and a pair of second axis members holding the movable plate on the driving members from both sides so that the movable plate is rotatable about a Y axis orthogonal to the X axis; a driving unit including a permanent magnet provided on the driving member, a coil provided to oppose the permanent magnet and a voltage applying unit applying voltage to the coil; and a spacer sandwiched between the driving member and the permanent magnet so as to form space preventing intervention by the movable plate. The permanent magnet is provided such that a line segment connecting both poles of the permanent magnet inclines, in a plan view of the movable plate, with respect to the X axis and the Y axis. The voltage applying unit includes a voltage generating portion generating a first alternating voltage and a second alternating voltage having different frequencies and a voltage superimposing portion superimposing the first voltage and the second voltage. The voltage superimposed at the voltage superimposing portion is applied to the coil so that the movable plate rotates about the X axis with a frequency of the first voltage and about the Y axis with a frequency of the second voltage.
Owner:SEIKO EPSON CORP

Serial automatic coal injection control system and method for blast furnace

The invention relates to a system and a method for controlling the automatic coal injection of a blast furnace serial pot, which belongs to the technical field of the automatic coal injection of a blast furnace serial pot. The system comprises a hardware monitoring system and a software processing module. The system is characterized in that a Siemens PLC control system and an upper monitoring system is connected by a Profibus network to monitor the state of each coal injection process; the real-time data communication of model calculation and automatic regulation with coal injection is realized by an Ethernet; the software processing module mainly comprises a data acquisition module, a sampled data renewing module, a mathematical model coefficient correction module, a mathematical model calculation module, a fuzzy regulation module and a fast-regulation module; and all parts of the software processing module run on an industrial computer. The system and the method overcome the difficulty that a weighting result of a coal injection system of a serial pot is affected by numerous factors, use many mathematical methods to handle a weighting result of a coal injection pot, are combined with a mathematical model and fuzzy control and realize the automatic coal injection control of a blast furnace serial pot.
Owner:BEIJING SHOUGANG AUTOMATION INFORMATION TECH +1

Virtualization based power and function isolating method for loading module of monolithic kernel operation system

The invention discloses a virtualization based power and function isolating method for a loading module of a monolithic kernel operation system. The virtualization based power and function isolating method includes steps that a page table for the loading module and a page table for a monolithic kernel are generated in a kernel space of a virtual memory when the system is initialized; the operation system falling into a monitor of a virtual machine sets attributes of the two page tables and returns in the process of loading the loading module; when the loading module applies for a dynamic memory, the operation system falling into the monitor of the virtual machine updates the two page tables and returns; when the loading module directly calls and skips to code pages of the kernel module or directly rectifies data pages of the kernel module, the operation system falling into the monitor of the virtual machine switches the page tables and returns after checking and processing the page tables. By the aid of the monitoring mechanism of the monitor of the virtual machine, an executive body of the system is marked by page directory address register, and power and function of the kernel are isolated. Frequent interference during switching of a kernel mode and a user mode is avoided, and integral performance of system is improved.
Owner:HUAWEI TEHCHNOLOGIES CO LTD

Method and device for detecting/correcting colour vision and their application

This invention discloses an achromatopsia inspection / correction method, comprising the following steps: displaying a plurality of groups of achromatopsia test charts for the examinee to identify, each group is corresponding to one type of achromatopsia; determining the types of achromatopsia based upon the inspection results; displaying at least one colored color-matching contrast chart, one area of said color-matching chart is in a predetermined color, another area is for the examinee to match colors; taking the color-matching result from the examinee; determining the achromatopsia scales of the examinee by comparing the color-matching results of the examinee with said predetermined three elementary colors; selecting the corresponding achromatopsia correction spectrum curves according to the determined types and scales of achromatopsia. Besides, this invention also discloses an achromatopsia inspection / correction apparatus for realizing this method.
Owner:CHEN YAN

Data security sharing method, system and device

The embodiment of the invention provides a data security sharing method, system and device, and the method comprises the steps: obtaining a data sharing request transmitted by a data request node based on a multi-party data security sharing architecture which is constructed by a license chain node and an equipment node; according to the data sharing request, carrying out multi-party data retrievalon a plurality of data providing nodes through a permission chain to obtain a local data model of target shared data, and obtaining the local data model through target shared data training based on federated learning and a preset learning instruction; and sending the local data model to a corresponding data request node. According to the embodiment of the invention, a decentralized trusted transaction environment is established, so that the transaction process is transparent to two transaction parties; and through a federated learning technology, the original data does not need to be transmitted in a data sharing process, so that the protection degree of user data privacy is increased from the source.
Owner:BEIJING UNIV OF POSTS & TELECOMM +1

Neural network hardware accelerator

The invention discloses a neural network hardware accelerator. An assembly line architecture of the hardware accelerator comprises an instruction obtaining module used for acquiring instructions an instruction decoding module used for performing instruction decoding operation; a semi-precision floating point operation module used for carrying out one-dimensional vector operation; an activation function calculation module used for calculating an activation function in a table lookup mode; a floating point post-processing unit used for performing floating point operation on the data calculated by the activation function; and a caching module used for caching intermediate data in the neural network algorithm implementation process. Register files which are distributed on an assembly line andlocated on the same level as the instruction decoding module are used for temporarily storing related instructions, data and addresses in the neural network algorithm implementation process. The hardware resource utilization rate of the hardware accelerator in the RNN neural network algorithm implementation process can be greatly improved, so that the unit power consumption efficiency of the RNN neural network algorithm with the unit calculation amount in unit time when the RNN neural network algorithm is operated through the hardware accelerator is improved.
Owner:SHENZHEN DAPU MICROELECTRONICS CO LTD
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