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Efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements
InactiveCN101088705AReduce dependenceImprove efficiencyOptical surface grinding machinesOptical surfaceMachining process
The efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements belongs to the field of precise optical machine technology. The polishing process includes: constituting polishing process model based on the profile data obtained through measurement with interferometer or other instrument, determining the machining path, speed, pressure and other parameters of the element under the control of computer to perform simulating machining, verifying the technological parameters based on the simulating machining results and determining the ultimate technological parameters, creating NC program and machining. The present invention has high machining efficiency and high machining precision.
Owner:CHANGCHUN EQUIP TECH RES INST
Steady state control method for three-phase double-mode inverter
InactiveUS20170047862A1Guaranteed stable operationGood effectEfficient power electronics conversionAc-dc conversionPower controlPhase lead
A steady state control method for a three-phase double-mode inverter. Off-grid steady state control is composed of outer loop power droop control, voltage feed-forward quasi-resonant control, and inner current loop dead-beat control. Therefore, the response speed of the inverter is raised, and the influence caused by the load fluctuation of a micro-grid is inhibited. Based on the off-grid steady state control, grid-connected steady state control introduces phase lead control to the power droop control. Therefore, the output voltage of the inverter is always slightly ahead of the power grid voltage, which avoids the energy pour backward phenomenon of the inverter due to a phase error, and realizes stable and reliable running in the grid-connected mode.
Owner:HUNAN UNIV +1
Caterpillar vending machine and automatic vending method
ActiveCN107945378AImprove adaptabilityReduce manual laborAcutation objectsCoin-freed apparatus detailsPayment systemIndustrial engineering
The invention provides a caterpillar vending machine. The caterpillar vending machine comprises a goods replenishing unit, m transshipment units, n container units, a detection control unit, a cloud side management platform and a payment system; the goods replenishing unit, the transshipment units and the container units are connected in sequence, and the integrated caterpillar vending machine isformed, wherein m and n are both natural numbers except 0, when n=1, m=1, and when n>1, m=n+1; regarding the m transshipment units and the n container units, when n>1 and m=n+1, the transshipment units and the container units are connected in an alternated and arranged mode, and the last unit is the transshipment unit; when n=1 and m=1, the transshipment units and the container units are of an integrated structure. The caterpillar vending machine solves the problem of a traditional vending machine that manual work is relied on to replenish goods, goods replenishing is troublesome, time and labor are wasted, and the adaptability of vended commodities are poor.
Owner:HUNAN SCIENTOP AUTOMATIC EQUIP SHARES +1
Numerical control polishing machine for optical elements
ActiveCN101386150AGuaranteed high certaintyGuaranteed running stabilityPolishing machinesGrinding drivesEngineeringMachine building
The invention relates to a digital control polishing machine tool of a non-spherical optical element with large caliber, which pertains to the technical filed of optical machine building and is characterized in that: the machine tool essentially consists of a base system, an upright column system and a crossbeam system; the base system comprises a base, an X-axis feeding system, an A-axis overturning feeding system and a C-axis revolved feeding system; the crossbeam system comprises a crossbeam, a Y-axis feeding system, a Z-axis feeding system, a power planetary polishing head and a polishing die. A four link rod locating mechanism is adopted to realize 16 translation of the polishing die; the machine tool has the advantages that: five-axis digital control and the manner of four-axis linking motion are adopted in the digital control polishing machine tool of the optical element; the overturning and rotating structure of a work piece is utilized, thus causing the polishing position to keep horizontal and ensuring the high determinacy of a removal function; the machine tool is controlled by adopting non-clearance transmission and a high-precision pneumatic system, thereby ensuring the operating stability of a polishing process and realizing the digital control processing of the optical element.
Owner:常州皓研智能科技有限公司
Device and method for detecting obstruction degree of dustproof mesh, and electronic equipment thereof
InactiveCN101368938AGuaranteed cooling effectGuaranteed running stabilityDispersed particle filtrationMaterial analysisData conversionEngineering
An embodiment of the invention provides a dust-proof net plugging degree detection device, a method and an electronic equipment, adaptable to different environments to detect the plugging degree of the dust-proof net. The device comprises a wind speed detection unit, a data conversion module and a plugging detection unit; the method comprises the following steps: collecting the rotating speed of a fan, and the wind speed parameters at the rotating speed; obtaining the wind resistance characteristic parameters, according to the rotating speed of the fan and the wind speed parameters at the rotating speed; and determining the plugging degree of the dust-proof net based on the wind resistance characteristic parameters and the alarm threshold value. The device in the embodiment of the invention can adapt to various environments and different dust-proof nets, which can give an alarm directly based on the dust-proof net plugging degree determined by the wind speed so as to notify the user to timely clean or replace the dust-proof net.
Owner:HUAWEI TECH CO LTD
Reference voltage generating circuit for integrated circuit
InactiveUS20050093617A1Guaranteed running stabilityHigh-speed response characteristicStatic storageElectric variable regulationHemt circuitsVoltage reference
A reference voltage generating circuit has a power supply voltage node to which a driving power supply voltage is intermittently applied. The circuit includes; a first current mirror section including a first MOS transistor of a first conductivity type having a source terminal connected to the power supply voltage node and a gate terminal connected to a drain terminal as a reference voltage output node, and a second MOS transistor of the first conductivity type having a gate terminal connected to the gate terminal of the first MOS transistor of the first conductivity type and a source terminal connected to the power supply voltage node; a second current mirror section including a third MOS transistor of a second conductivity type having a drain terminal connected to the reference voltage output node and a source terminal connected to a first current path to which a first resistor and a first diode are serially connected, and a fourth MOS transistor of the second conductivity type having a gate terminal and a drain terminal connected to the gate terminal of the third MOS transistor of the second conductivity type in common and a source terminal connected to the second current path to which a second diode is serially connected; and a charge transporting section connected between the gate terminal of the first MOS transistor of the first conductivity type in the first current mirror section and the gate terminal of the fourth MOS transistor of the second conductivity type in the second current mirror section.
Owner:SAMSUNG ELECTRONICS CO LTD
Limp control method and system based on electric car distributed drive system
ActiveCN106740264AGuaranteed running stabilityEnsure safetySpeed controllerElectric energy managementElectric machineElectronic differential
The invention discloses a limp control method and system based on an electric car distributed drive system. The limp control method and system has the advantages that when a single drive motor fails, the output power of the drive motor is controlled on the basis of an electronic differential system necessary to hub (wheel rim) drive operation and a sensor to guarantee the operation stability of a car and achieve a limp function, the car can be timely driven to the nearest maintenance station, road occupation and roadside assistance and trailer costs during the failure are lowered, and car safety is guaranteed while unnecessary troubles are reduced.
Owner:HIGER
Cloud service executor dynamic reconstruction method based on mimicry defense
ActiveCN110324417AGuaranteed running stabilityReduce loadTransmissionResource poolOptimal scheduling
The invention provides a cloud service executor dynamic reconstruction method based on mimicry defense. The method comprises the steps of step 1, building a heterogeneous cloud service executor mirrorimage resource pool; step 2, constructing a pre-offline executor information queue according to a cloud service executor scheduling triggering mechanism; and step 3, realizing seamless switching between a new online execution body and a pre-offline execution body by adopting an execution body offline and online mechanism. According to the method, dynamic reconstruction of the cloud service executor is realized through mimicry defense, the optimal scheduling problem of the executor is solved, the robustness and dynamics of the cloud service executor are improved, and the security of cloud services based on mimicry defense is enhanced.
Owner:河南信大网御科技有限公司 +1
Source-load-storage coordinated scheduling method for improving new energy consumption
ActiveCN109742812AExpand the consumption spaceImprove consumption rateSingle network parallel feeding arrangementsAc network load balancingNew energyPower equipment
The invention discloses a source-load-storage coordinated scheduling method for improving new energy consumption. The method comprises the steps of S1, aggregating a thermal power plant, a new energypower plant, user loads and energy storage equipment into a source-load-storage scheduling system, and obtaining a new energy output curve, a heat utilization load curve and a power utilization load curve of the system; S2, establishing a source-load-storage coordinated scheduling model with the objective of maximizing new energy consumption quantity and minimizing the system operation cost; and S3, solving the source-load-storage coordinated scheduling model through utilization of improved multi-objective particle swarm optimization, and carrying out computing to obtain the source-load-storage coordinated scheduling method. The method has the advantages of simple realization method and flexible application. Schedulable resources such as power equipment, the user loads and the energy storage equipment in the system can be utilized rationally. The new energy consumption is facilitated, and moreover, operation cost of the system is reduced.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Multishaft motion control card based on RS-232 serial bus
InactiveCN1564095AGuaranteed running stabilityReduce in quantityNumerical controlHardware structureChip select
The control card consists of control unit, switching value input unit and signal output unit. The control unit includes RS-232, quartz multivibrator, circuit for monitoring power supply; switching value input unit includes acquisition module and isolation shaping module; signal output unit includes current signal output unit and direction signal output unit. 8254 programmable chip is adopted in pulse control circuit for counting and timer. X5045 is utilized in EEPROM chip. Features of the card are: simple hardware structure, few number of pins, and no need of driving program.
Owner:ZHEJIANG UNIV
Damping injection control method for improving power angle oscillation of water turbine generator set
InactiveCN101915203AMake full use of the essential characteristics of dynamicsImprove oscillation characteristicsClimate change adaptationSingle network parallel feeding arrangementsPid control algorithmEquivalent control
The invention relates to a damping injection control method for improving power angle oscillation of a water turbine generator set. An autocorrelation factor of the unit power angle is increased based on the structural analysis of a Hamilton model damping matrix of the water turbine generator set, namely the power angle damping is injected based on a dynamical mechanism associated inside the system, and the structural change is equivalent by designing a corresponding control law. Due to the applicability analysis of the equivalent control law, a variable structure control strategy by combining the algorithm and a traditional PID control algorithm is provided so as to control the machine set, and corresponding solutions are provided for the control of output phase step and other problems. The simulation proves that: the provided control algorithm can effectively improve the oscillating characteristics of the power angle of the machine set, even can keep the stability of the machine set under lower damping.
Owner:KUNMING UNIV OF SCI & TECH
Daemon system and method for application service
ActiveCN101895540AContinuous serviceGuaranteed running stabilityData switching networksApplication serverComputer science
The invention provides a daemon system and a daemon method for an application service. The system comprises a first daemon execution module and a second daemon execution module, wherein the first daemon execution module is used for monitoring the condition of an application server needing daemon in real time, solving the abnormity problem of the application server when the application server is judged to fail, monitoring the condition of the second daemon execution module in real time and restarting the second daemon execution module when the second daemon execution module is judged to fail; and the second daemon execution module is used for monitoring the condition of the first daemon execution module in real time and restarting the first daemon execution module when the first daemon execution module is judged to fail. When the system and the method are used for providing daemon for the running process of the application server, the running stability of the system per se can be ensured so as to continuously provide services for the application server.
Owner:重庆盈熙横纵信息技术有限公司
Cathode side gas humidity adjusting system and method for proton exchange membrane fuel cell
InactiveCN109860664AImprove output performanceGuaranteed running stabilityFuel cellsAir filterIntercooler
The invention relates to a cathode side gas humidity adjusting system and method for a proton exchange membrane fuel cell, and the system comprises an air filter, an air compressor, an intercooler, anair humidifier, a fuel cell stack, an exhaust back pressure valve, a tail gas processor, a humidity regulator, a three-way valve, and a fuel cell control unit. An outlet of the fuel cell stack is connected with an inlet of the humidity regulator, and the humidity regulator is connected with the air humidifier. The air humidifier is connected with the three-way valve, and the fuel cell control unit is connected with a water content sensor and a humidity regulator in the fuel cell stack. The humidity of air entering the fuel cell stack can be automatically adjusted according to the actual working requirements of the fuel cell stack, the phenomenon that the interior of the stack is too dry or too wet is avoided, the water balance in the stack is maintained, the output performance of the fuelcell is effectively improved, the operation stability of the fuel cell is guaranteed, and the reliability and durability of the stack are improved.
Owner:FAW JIEFANG AUTOMOTIVE CO
Extraction device and method
ActiveCN106139638AReduce backmixingSolve the problem of strong stirring and mixing extractionLiquid solutions solvent extractionProcess efficiency improvementGas phaseEngineering
The invention provides an extraction device and method. A mixed settler extractor comprises a mixing chamber, an organic liquid film generator, a gas-liquid separation device and a liquid-liquid coalescence separation device. The mixing chamber is provided with a heavy phase input port and a first heavy phase discharge port. The organic liquid film generator is connected with the mixing chamber and provided with a light phase input port and a gas inlet. The gas-liquid separation device is connected with the mixing chamber. The liquid-liquid coalescence separation device is connected with the gas-liquid separation device and provided with a liquid inlet, a first light phase discharge port and a second heavy phase discharge port. The extraction device can be provided with no clarifying chamber, the integrated structure of the mixing chamber and the clarifying chamber is well achieved, the problem of heavy phase liquid distribution uniformity of a mixing chamber and the problem about light phase, heavy phase and gas phase separation of the mixing chamber are solved, the occupied area is small, energy consumption is low, a high-flow water solution containing a to-be-separated target object can be treated, and back-mixing of a high-position extraction tower can be relieved.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
System and method for controlling gas injection quantity of multi-split air conditioning unit through enhanced vapor injection
ActiveCN107906778AGuaranteed stabilityImprove energy efficiencyCompression machines with reversible cycleRefrigeration safety arrangementElectronic expansion valveVapor–liquid separator
The invention relates to a system for controlling the gas injection quantity of a multi-split air conditioning unit through enhanced vapor injection. The system comprises a compressor, an oil separator, a four-way valve, an outdoor unit heat exchanger, a heating electronic expanding valve assembly, a plate type heat exchanger, a gas injection electronic expanding valve, a gas and liquid separator,an indoor unit heat exchanger and an indoor unit electronic expanding valve; a gas injection pipeline in the compressor is provided with a one-way valve; a first temperature sensor is arranged at thetop of the compressor; a second temperature sensor is arranged between an inlet on the evaporation side of the plate type heat exchanger and an outlet of the gas injection electronic expanding valve;a third temperature sensor is arranged between an outlet on the evaporation side of the plate type heat exchanger and a gas injection inlet of the compressor; and a high-pressure pressure sensor is arranged between the oil separator and the four-way valve. The control method comprises the following steps: performing on-off control on the gas injection electronic expanding valve according to the compression top overheat degree of the compressor and performing opening adjustment on the gas injection electronic expanding valve according to the overheat degree of the plate type heat exchanger, sothat the gas injection quantity is optimal, the operating stability of the unit is guaranteed and the energy efficiency of the unit is improved.
Owner:NANJING TICA AIR CONDITIONING CO LTD
Multi-language automatic explanation system for tourist bus or ship and explanation synchronizing method
ActiveCN105761650AImprove the tour experienceReduce labor costsAdvertisingWireless commuication servicesPersonalizationMulti language
The invention discloses a multi-language automatic explanation system for a tourist bus or ship and an explanation synchronizing method.The system is formed by connecting an automatic explanation synchronizing device fixedly installed in a bus or ship body with intelligent explanation devices carried by tourists through a wireless network; the automatic explanation synchronizing device comprises an embedded processing module, a geographical location positioning module, a low-power dissipation Bluetooth transmitting module, a wireless local area network accessing module, a file storing module, a power supply module and a liquid crystal touch screen, wherein the geographical location positioning module, the low-power dissipation Bluetooth transmitting module, the wireless local area network accessing module, the file storing module, the power supply module and the liquid crystal touch screen are all connected with the embedded processing module.According to the system and the method, Bluetooth signals for explanation synchronizing are sent in a broadcasting mode, and therefore it is guaranteed that all the intelligent explanation devices in the tourist bus or ship are immediately synchronized and are not prone to be disturbed by other equipment; explanation software in the intelligent explanation devices supplies a highly-personalized multi-language automatic explanation service to multinational tourists in the bus or ship, and the explanation labor cost is saved.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Method, system and device for carrying out online self-correcting on optimal gain of wind generating set
ActiveCN102797631ASolve the problem that the optimal gain value cannot be self-corrected onlineSolve the problem that cannot be self-corrected onlineWind motor controlMachines/enginesData acquisitionEngineering
The invention provides a method, system and device for carrying out online self-correcting on the optimal gain of a wind generating set. The method comprises the following steps of: acquiring the real-time temperature of the peripheral environment; acquiring the actually-measured data of unit running; drawing an actually-measured rotating speed-torque curve, comparing the actually-measured rotating speed-torque curve with a theoretical curve, and calculating a root-mean-square error; calculating an optimal gain value, and carrying out correction on the optimal gain value; calculating a real-time gain value, and carrying out gain modification on the optimal gain value; carrying out gain limit on the optimal gain output; and transmitting the optimal gain value back to a master control PLC (programmable logic controller) through network communication. The system comprises a temperature calculation module, a data acquisition module, an error analysis module, a gain correction module, a gain modification module and a gain limit module. The device mainly comprises a temperature sensor, a temperature processing circuit, a self-correcting system and a master control PLC. According to the invention, the online correction on the optimal gain can be realized, and the cost is low, thereby facilitating popularization.
Owner:GUODIAN UNITED POWER TECH
Reference voltage generating circuit for integrated circuit
InactiveUS7135913B2Guaranteed running stabilityHigh-speed response characteristicStatic storageElectric variable regulationElectrical resistance and conductanceEngineering
Owner:SAMSUNG ELECTRONICS CO LTD
Spinning oil fume purifying device
InactiveCN102000631AImprove purification effectWith automatic processExternal electric electrostatic seperatorElectrostatic separation detailsEngineeringWaste oil
The invention discloses a spinning oil fume purifying device, which belongs to the technical field of synthetic fiber. The spinning oil fume purifying device comprises a shell; multiple anode tubes are vertically arranged in the shell; a cathode line is vertically hung in the centre of each anode tube; the upper part of each anode tube is inserted into an upper card, and the lower part of each anode tube is inserted into a lower card; the upper and lower cards, the outer walls of the anode tubes and the inner wall of the shell surround a closed cavity; the upper part of the cavity is communicated with a heat tracing steam inlet on the side wall of the shell; and the lower part of the cavity is communicated with a heat tracing condensed water outlet on the side wall of the shell. When oil fume passes through the anode tube, the oil fume particles mixed in the fume are charged under the action of an electric field and then adsorbed on a cathode and an anode. Through the invention, the accumulated oil stains are heated to 70-120 DEG C by the steam heat tracing so that the fluidity of the waste oil stains is maintained and the oil stains can smoothly flow into an oil collector on the bottom of the device,thereby guaranteeing the operation stability of the equipment and laying a good foundation for the collection of waste oil. The purifying device of the invention has notably good purifying effect and ensures that 95% of the oil fume in the waste gas can be removed.
Owner:SHEN MA INDUSTRY CO LTD
Method for determining peaking demand of a large-scale wind power integration system
ActiveCN106816886ASolve the problem of insufficient peak shaving abilityEasy to operateClimate change adaptationSingle network parallel feeding arrangementsLoad timeSimulation
The invention provides a method for determining the peaking demand of a large-scale wind power integration system. The method comprises the following steps: generating a year-round wind power output time sequence; generating a year-round load time sequence; and building a conventional generator set status transfer sequence considering planned generator shutdown, determining the peaking demand of a large-scale wind power integration system, drawing a peaking demand curve, and doing statistics of peaking demand indexes. The method presented by the invention is simple, practical and highly operable. The problem that there is a need for generator set combination in the traditional method of status transfer sampling only considering forced generator shutdown is avoided. An accurate and effective analysis method and evaluation indexes are provided for solving the problem that the peaking capacity of a large-scale wind power integration system is inadequate. The peaking demand of a wind power integration system can be reflected directly. The operation stability and reliability of a large-scale wind power integration system are guaranteed.
Owner:CHINA ELECTRIC POWER RES INST +2
Island isolated micro-grid energy control method
ActiveCN104901338AGuaranteed running stabilityGuaranteed operating economyPower network operation systems integrationSingle network parallel feeding arrangementsControl mannerEnergy control
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Active stability control method of water-turbine generator set
InactiveCN101718248AImprove stabilityAvoid the effects of designHydro energy generationMachines/enginesController designHamiltonian model
The invention relates to an active stability control method of a water-turbine generator set, which comprises the following steps: calculating the stability control value of the water-turbine generator set under the given output by using a Hamiltonian model of the water-turbine generator set, determining the limiting conditions of the stability control value, improving a stability control algorithm, and then, determining the constitution scheme of an actual controller. The method of the invention improves the stability of an electric power system by the active stability of the set, avoids the influence of the complexity of the electric power system on the design of a set controller, and simplifies the design process; in the stability control method a given output target value is used as a control basis to reduce the coupling action between the set and the electric power system, and the output deviation is used as feedback compensation to solve the problem of output deviation caused by the model error of the stability controller; and the stability controller can keep the operation stability of the set in case of lower damping.
Owner:KUNMING UNIV OF SCI & TECH
Liquid tank without free liquid level
InactiveCN102343969AAvoid damageReduce the risk of injuryFor bulk goodsLiquid tankMeasuring instrument
The invention relates to a liquid tank without a free liquid level, which is characterized by comprising a liquid tank body; the liquid tank body consists of a tank bottom and tank walls which vertically extend upwards on the periphery of the tank bottom; a tank cover is movably mounted at the upper part of the liquid tank body; a sealing ring is arranged between the tank cover and the inner sides of the tank walls; the inner side of the tank cover is provided with a probe of a dielectric constant measuring instrument; and the outer side of the tank cover is connected with a hydraulic oil cylinder. The inner side of the tank cover of the liquid tank without the free liquid level is provided with the probe of the dielectric constant measuring instrument, which is used for measuring the dielectric constant of a substance near the upper surface of liquid in the liquid tank; the dielectric constant is used for judging whether the free liquid level is formed in the liquid tank or not; the position of the tank cover is automatically regulated, thereby eliminating the free liquid level in the liquid tank, so that the liquid tank is always in a full-tank state; the damage to a liquid tankstructure is decreased; safety misadventures such as leakage and the like are prevented from occurring; the risk of the damage to local and overall structures of a ship or other liquid transporting tools is decreased; and the running safety and the stability of the transporting tools are guaranteed.
Owner:中国船舶重工集团公司第七〇二研究所
Railway turnout repair device and rail burr repair method
ActiveCN106192629AEasy to carryGuaranteed running stabilityTrack superstructureRailway track constructionDrive wheelVehicle frame
The invention discloses a railway turnout repair device and repair method. The device comprises a grinding mechanism and a walking frame. The grinding mechanism comprises a base, an adjustable machine frame and an abrasive belt driving mechanism. The base is fixedly connected with the walking frame, the adjustable machine frame is movably connected to the base through an adjusting driving mechanism, and the abrasive belt driving mechanism is arranged on the adjustable machine frame; the abrasive belt driving mechanism comprises a driving wheel, a tension wheel and a bottom wheel, an abrasive belt sequentially makes contact with and passes by the driving wheel, the tension wheel and the bottom wheel, the abrasive belt is driven by the driving wheel to rotate, a profiling pressing block is arranged on the inner ring of the abrasive belt below the adjustable machine frame, and the profiling face of the profiling pressing block is in sliding connection with the inner surface of the abrasive belt. The adjustable machine frame horizontally moves so as to make the profiling pressing block press the abrasive belt so that the abrasive belt can be in sliding connection with the side face of a rail, burrs of the rail can be ground in all directions, the whole device is high in automation degree, manpower is greatly saved, grinding efficiency and the grinding effect are improved, stability is good, manufacturing cost is low, and the device and method are suitable for large-scale application and popularization in industry.
Owner:翟泉来
Design method of inter-operation system
InactiveCN1945531AImprove interoperabilityAdd supportMultiprogramming arrangementsSpecific program execution arrangementsOperational systemApplication software
This invention belongs to the technical field of computer operating systems, particularly in relation to a design method of the software, which will run interoperability in a single operating system, but at first this software ran in many operating systems. The design method of this invention is a single-core model structure with multi-interfaces, it founds a core service system with coordinate different operating system, which bases on the new invented core; when running apply program, it will distinguish this program belonging to which type of operation system's program according reading the head of file to check the type or format of this file, and then transfer relevant core service, thereby it settle the problem of interoperability of single operation system. The space interoperability system redesigned, reintegrated, redeveloped basing on opening original code, can run the program from Windows and Linux operation system synchronously. The realization of this interoperability technology doesn't only reduce the cost, but also has a better practicability and spread applied worth.
Owner:刘金刚
Migration method and device for virtual machine in resource pool of cloud computing system
PendingCN109992350AGuaranteed running stabilityImprove the success rate of migrationResource allocationSoftware simulation/interpretation/emulationResource poolOccupancy rate
The invention discloses a migration method and device for a virtual machine in a resource pool of a cloud computing system. The method comprises the following steps: acquiring state information of a plurality of physical hosts including CPU utilization rate, memory utilization rate, CPU temperature and operation parameters of a power supply, determining a physical host of which the CPU utilizationrate is greater than an upper limit value; memory usage rate is greater than upper limit value, the CPU temperature is greater than the upper limit value and the operation parameters of the power supply meet a first preset condition to be a source physical host, and a physical host of which the CPU utilization rate is less than the lower limit value, the memory utilization rate is less than the lower limit value, the CPU temperature is less than the lower limit value and the operation parameters of the power supply meet a second preset condition to be a target physical host; data on the to-be-migrated virtual machine with the CPU occupancy rate larger than the CPU occupancy rate threshold value and the memory occupancy rate larger than the memory occupancy rate threshold value in the source physical host are migrated to the idle virtual machine on the target physical host, and the operation stability of the cloud computing system and the success rate of virtual machine migration are improved.
Owner:BEIJING TEAMSUN TECH
Climbing robot walking along overhead line
ActiveCN109301753AGuaranteed running stabilityQuality assuranceManipulatorApparatus for overhead lines/cablesCantileverOverhead line
The invention discloses a climbing robot walking along an overhead line, and the climbing robot comprises a support structure which comprises a controller. One side part of the support structure is provided with a front cantilever device, a center cantilever device and a rear cantilever device. The three cantilever devices are connected with the support structure through a cantilever device pedestal, and the front cantilever device and the rear cantilever device are located at two ends of the support structure. The front and rear cantilever devices each comprises a walking drive mechanism located at the top, an unfolding mechanism, a flexible rotating mechanism, a clamping mechanism, and a lifting mechanism which is located below, wherein the unfolding mechanism, the flexible rotating mechanism and the clamping mechanism are located at the central part. The center cantilever device comprises a walking drive mechanism at the top, an unfolding mechanism and a flexible rotating mechanismwhich are both located at the central part, a lifting mechanism located below, and a charging mechanism located at the front side of the center cantilever device. The climbing robot achieves the stable walking and climbing along an overhead line (220kV-500kV), and can be installed on a shock-proof hammer and a suspension line clamp on the overhead line in a crossing manner. The climbing robot is strong in obstacle crossing capability, is high in obstacle crossing efficiency, is large in climbing angle, is stable in structure, is light in weight, is simple in operation, and is good in real-timeperformance.
Owner:SHANDONG UNIV OF SCI & TECH
Combined valve
InactiveCN103256404AAvoid mutual influenceAvoid collision wearMultiple way valvesRefluxCylinder block
The invention relates to a combined valve. The combined valve comprises a multifunctional valve, a confluence plate and at least one operation reversing valve, wherein a left opening and a right opening at one side surface of one operation reversing valve are respectively connected to a left cavity and a right cavity of a piston cylinder; a left reflux opening, a middle inlet and a right reflux opening at the other side surface of the operation reversing valve are respectively connected to a left flow channel, a middle flow channel and a right flow channel of the confluence plate; the channels of the left reflux opening and the right reflux opening of the operation reversing valve are respectively provided with a one-way valve; the left reflux opening and the right reflux opening are corresponding connected to a left flow channel and a right flow channel of the confluence plate through respective throttle valves; and the left inlet and right inlet of the multifunctional valve are respectively and correspondingly communicated with a left outlet and a right outlet through respective throttle valves. The combined valve avoids mutual influence among cylinders and collision abrasion to a piston and a cylinder end cover when the piston moves rapidly, prolongs the service life of the piston cylinder efficiently, and guarantees operation safety and stability of the piston cylinder.
Owner:皇甫美蓉
Driving guide-rail pair for tabouret of computerized embroidery machine
InactiveCN1865573AExtended service lifeImprove running stabilityLarge fixed membersFeedersEngineeringLubricant
Owner:叶连福
Heat exchange station feedback prediction regulation and control method based on indoor temperature
ActiveCN112361450AGuaranteed running stabilityImprove thermal comfortLighting and heating apparatusSpace heating and ventilation detailsHigh energyThermal comfort
The invention provides a heat exchange station feedback prediction regulation and control method based on indoor temperature. The method aims to solve the problems of high energy consumption and low heat comfort caused by an existing heat exchange station feedforward regulation method, and mainly comprises the following steps: establishing a secondary water supply temperature prediction model; determining water supply and return temperature difference change values at different outdoor temperatures; determining an adjustment period and time; and determining a secondary water supply temperaturecorrection model. Compared with a traditional adjusting method, the method can guarantee the operation stability of a pipe network, improve the heat comfort of heat users and achieve energy-saving operation of a heat supply system.
Owner:TIANJIN UNIV
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