611results about How to "Meet load requirements" patented technology

The invention discloses a low dropout regulator, which comprises an error amplifier, a buffer circuit, a P-channel metal oxide semiconductor (PMOS) regulation transistor, an N-channel metal oxide semiconductor (NMOS) push-pull tube, a voltage division feedback circuit, a compensation circuit and an output circuit, wherein the gate of the PMOS regulation transistor is connected with the output end of the buffer circuit, the source of the PMOS regulation transistor is connected with power voltage, and the drain of the PMOS regulation transistor is used as the output end of the low dropout regulator; the gate of the NMOS push-pull tube is connected with the output end of the error amplifier, the drain of the NMOS push-pull tube is connected with the drain of the PMOS regulation transistor, and the source of the NMOS push-pull tube is grounded; and the error amplifier, the compensation circuit, the buffer circuit, the PMOS regulation transistor, the voltage division feedback circuit and an output circuit form a main control loop, and the error amplifier, the compensation circuit, the NMOS push-pull tube, the voltage division feedback circuit and the output circuit form an auxiliary control loop. According to the low dropout regulator, the transient response of the regulator can be quickened, and the accuracy of output voltage can be improved.

Multi-level data center consolidated power is disclosed. One or more controllers communicate with one or more power supplies and sensors to adapt to dynamic load requirements and to distribute DC-power efficiently across multiple IT racks. The distributed DC-power includes one or more DC-voltages. Batteries can be temporarily switched into a power supply circuit to supplement the power supply during spikes in power load demand while a controller reconfigures power supplies to meet the new demand. In embodiments, one or more DC-to-AC converters handle legacy power loads. The DC-to-AC converters are modular and are paralleled for redundancy. The AC-power is synchronized for correct power flow control. The one or more controllers communicate with the one or more AC-power supplies to dynamically allocate AC-power from the DC-to-AC converters to the multiple IT racks.

The invention discloses a distribution method of data accessing resources, a system and a device thereof, wherein, the invention is provided with a global service resource dispatching unit and an area service unit according to various areas in an equal network. The method comprises the following steps: the area service unit distributed for the equal network node according to the area in which theequal network node exists receives an accessing resource distribution request sent by the equal network node; according to the request, the area service unit distributes a data accessing unit which provides corresponding data resource for the equal network node in the region within the jurisdiction thereof; and when no data accessing unit can be distributed, the global service resource dispatching unit is requested to distribute the data accessing unit and/or the area service unit in other areas for the equal network node. The adoption of the invention can realize network resource load balance in the data resource accessing process of the equal network node.

The invention relates to an undercarriage test load loading device. A through hole for installing an FZ loading connector and an FX loading hole for installing an FX loading connector are formed in an upper part of a loading fake wheel; one end of an FZ loading lug is connected to the FZ loading connector, and the other end of the FZ loading lug is connected to one end of a hydraulic servo actuator cylinder; the other end of the hydraulic servo actuator cylinder is arranged on a vertical column; a shaft sleeve hole for arranging the loading fake wheel on a wheel shaft of an undercarriage and a PX loading hole for installing a PX loading lug are formed in a lower part of the loading fake wheel; a PY loading hole for installing a PY loading lug is formed in the bottom of the loading fake wheel; a chain is connected to the PY loading lug; and force sensors are arranged on the upper parts of the hydraulic servo actuator cylinder and the chain. The loading fake wheel replaces an airplane wheel so as to satisfy the loading demand of a test, a connection between the loading fake wheel and the undercarriage is consistent with a connection between a real airplane wheel and the undercarriage, the transmission path of the load is constant, the accuracy of a test result will not be affected, and the loading demands of different testes in different directions can be met.

The invention discloses a variable air volume (VAV) air-conditioning system air-supply static pressure optimizing and controlling method and a device thereof. A static pressure setting optimizer inspects valve location signal, namely air valve opening, of a VAV terminal in every air-conditioning area, and a VAV terminal with largest valve location signal is selected from all the valve location signals. A static pressure setting value P is changed by the static pressure setting optimizer to lead the valve location of the VAV terminal to reach or get close to the largest opening. The rotating speed of a air-supply fan in the VAV air-conditioning system is controlled by a static pressure controller according to the difference of the statistic pressure setting value P set by the static pressure setting optimizer and the static pressure value gained by an air passage static pressure transducer, so that the static pressure of the air passages can reach the setting value P. The variable air volume (VAV) air-conditioning system air-supply static pressure optimizing and controlling method of the invention can not only guarantee the comfort requirement for every VAV air-conditioning system area in a heavy load, but also save the energy consumption of the air-supply fan in a relatively light load. The device for realizing the method is simple in structure and reliable in performance.

The invention discloses a manufacturing method for a composite spar cap for a wind power blade. The manufacturing method comprises the following steps: 1), paving a double sided tape at the outer end of a vacuum opening of a spar cap mould; 2) paving a bottom diversion net, a lower separation film and a piece of lower demolding cloth on the spar cap mould on the inner side of the double sided tape from bottom up; 3), paving and covering mixed woven fabric, carbon fiber fabric and/or glass fiber fabric on the lower demolding cloth to form a mixed fiber preformed body; 4), paving a piece of upper demolding cloth, an upper separation film and a top diversion net on the mixed fiber preformed body from bottom up in sequence; arranging a runner in the moving direction of fibers and reserving a glue injection opening at the same time; finally, integrally covering the part from the top diversion net to the two ends of the spar cap by using a vacuum bag, and reserving a glue injection opening; 5), vacuumizing the vacuum bag; pouring epoxy resin into the vacuum bag, and then performing solidification molding. The manufacturing method is simple and easy to operate; the overall weight and the manufacturing cost of the wind power blade are reduced, the rigidity is improved, the operation process of the wind power blade is safe and reliable, and popularization and application are facilitated.

The invention provides a treatment method for large-thickness collapsible loess. The treatment method comprises the following steps: 1) sinking small-diameter steel casing into soil to form pile holes each having a depth equal to or smaller than the thickness of the collapsible loess stratum; 2) inserting (1) 1-6 drain boards or (2) hollow water pipes with a plurality of drain holes or (3) hollow steel pipes with a plurality of nozzles into the pile holes to bottom ends thereof; 3) repeating the steps 1) and 2) until the pile holes with the water injection fittings are formed everywhere in the field; 4) injecting water or injecting water under pressure into the water injection fittings in the pile holes to cause self-weight collapsible settlement of the collapsible loess after immersion; 5) observing and recoding the collapsible settlement amount of the soil mass in a foundation until the collapsible deformation of the soil mass in the foundation is stable; and 6) reinforcing the top-layer soil mass of the foundation by use of a filling compaction method or a dynamic compaction method. The treatment method has the characteristics and advantages of high construction speed, remarkable effect of eliminating loess collapse, dry operation, high bearing capacity, and the like.

The invention relates to a photovoltaic solar energy pavement structure unit, a power generation system and a manufacturing method of the pavement structure unit. The pavement structure unit comprises a concrete base, a photovoltaic solar cell panel and a PMMA light-transmitting protective plate, a sinking part is arranged in the center of the concrete base, the PMMA light-transmitting protective plate is arranged on the concrete base in a covering mode to define a closed space, and the photovoltaic solar cell panel is packaged in the closed space. The power generation system comprises a solar energy storage battery controller, a storage battery and multiple photovoltaic solar energy pavement structure units, the photovoltaic solar energy pavement structure units are laid to form a pavement and connected in parallel or series to the solar energy storage battery controller, the solar energy storage battery controller is connected with the storage battery, and the output end of the storage battery or the output end of the solar energy storage battery controller is connected with an electric load. The manufacturing method includes the steps that S1, the concrete base is prefabricated; S2, the photovoltaic solar cell panel is installed; S3, the PMMA light-transmitting protective plate is arranged on the concrete base in a packaging mode and receives penetrating light irradiation.

The invention provides a sun-tracking device with an external rotating angle and an internal rotating angle, belonging to the technical field of solar energy utilization and track. The invention is characterized in that: an inner gimbal rotating shaft is connected with the outer gimbal, the outer gimbal rotating shaft is connected with a bracket; the inner gimbal, the outer gimbal and a fixed bolster are connected with each other through a shafting forming an outer gimbal rolling shaft which can rotate as the external rotating angle, the inner gimbal can rotate as the internal rotating angle and the external rotating angle, moreover; a rotating half wheel and a rotating driving bracket are arranged on the inner gimbal and the outer gimbal respectively, controlling the tracking trajectory in a hemispheric spherical surface range. The invention has the advantages of simple structure, low cost, strong wind resistance, suitability for concentrating light, lighting, fixing sun and other kinds of tracking, and suitability for tracking control of optics and real-time programs.

The invention provides a Web server capacity expansion system based on a virtual machine, and the system comprises a user interface module, a user management module, a configuration management module, a service deployment module, a load monitoring module and a dynamic capacity expansion module, wherein the user interface module is used for receiving a user request, pre-processing the user request and transmitting the pre-processed user request to the user management module; the user management module is used for identifying the identity of a user according to the user request, storing relevant information of the user and transmitting the user request to the configuration management module; the configuration management module is used for maintaining and storing configuration information according to the user request so as to check and update the user interface module, the user management module, the service deployment module and the dynamic capacity expansion module; the service deployment module is used for establishing and configuring a Web server according to the user request, uploading the content of websites to the Web server and maintaining the content of the websites; and the load monitoring module is used for carrying out real-time monitoring on various loads of the Web server and collecting data of the loads.

The invention relates to a bidirectional composite stress loading test device for a test piece of a brick body and belongs to the field of civil engineering. The device mainly comprises an adjustable reaction frame, a pressurization screw stem and a mouth-shaped frame; the steel reaction frame which can adjust distance and the pressurization screw stem with a force transducer are utilized to realize the loading of transverse pressure or tensile force of the test piece of the brick body; and the largest loading value of the pressurization screw stem can reach 150 kN. The steel reaction frame consists of a steel plate and a screw stem; and the relative distance of the steel plate of the reaction frame can be flexibly adjusted so as to meet the requirement of the test pieces with different specifications. The vertical direction of the test piece is matched with the prior hydraulic jack to realize a full-process bidirectional loading test on the test piece of the brick body. The loading device has a simple structure, convenient disassembly and assembly and small occupied area, can be repeatedly used, can move, is convenient to load and control, has accurate and reliable tested data and can fully meet the loading requirement of the bidirectional composite stress loading test on the test piece of the brick body.

A compound engine for a means of transportation, includes a diesel engine and a gas turbine with at least one compressor and with at least one turbine. The diesel engine and the gas turbine are interconnected in such a manner that during continuous duty operation the compound engine is configured to be operated only by way of the diesel engine, and the diesel engine is optionally operated on its own or together with a compressor and a turbine of the gas turbine as a turbocharger for the diesel engine. The compound engine is configured to be operated by way of the diesel engine or the gas turbine.

A jet low temperature exhaust heat generating refrigeration method in energy resource technical field is provided, which takes the solar energy, geothermal energy, biomass energy or low temperature exhaust heat within the scope between 150 to 350 DEG C. as the heat resource and the groundwater, lake water, river water or seawater as the cold resource and selects organics as working substances to form an enclosed circulating system. Liquid saturated organic working substances are sent into an exhaust heat exchanger after enhanced the temperature by a working substance pump and then are heated to saturation status or steam-gas status and further to push turbine to rotate and also drive a generating unit to output electric works. Turbine exhaust serving as the working flow can flow into an ejector; then inject the gas at outlet of an evaporator to the ejector; then the two are mixed with pressure expanded in the ejector and then enter into a condenser to be condensed into liquid. Part of the liquid working substance can reenter into the working substance pump to complete the generating circulation and the other part can go through the procedure as reducing pressure and temperature through a throttle valve and then return to the evaporator to complete the refrigeration circulation, so as to realize the generating and refrigeration by using lower temperature and exhaust heat.

The invention relates to a multi-dimension aviation remote sensing test platform. A remote sensing balloon and an unmanned plane are used as platforms; and several kinds of remote sensing testing devices are integrated to a servo control platform in an integrated mode to carry out synchronous information collection. During working, the remote sensing balloon carries the remote sensing unmanned plane to lift off; when arriving at the specified height, the remote sensing balloon and remote sensing unmanned plane are separated from each other; the remote sensing unmanned plane falls at a high speed and enters a gliding mode based on empennage rotation at a low-altitude area; and navigation is carried out by an automatic pilot and thus the plane returns to a specified position. When remote sensing testing equipment works, collected information is stored to storage equipment and is transmitted to a mobile earth station by a radio transmission device to carry out analyses and processing. According to the platform, large-scale high-coverage information can be obtained at high altitudes and remote sensing measurement with high mobility and rapid response can be carried out at middle-altitude and low-altitude areas. Moreover, real-time transmission and processing of data as well as safe equipment return can be realized. Therefore, multi-dimension remote sensing demands of agricultural remote sensing, environment monitoring, plotting, security and protection, and fire detection can be satisfied.

The invention relates to the field of variable airplane structural design, in particular to a variable-curvature wing trailing edge. The variable-curvature wing trailing edge comprises a herringbone structure made of an elastic material, an upper skin, a lower skin, heating pieces, a wingtip and a flexible honeycomb, wherein the upper skin and the lower skin are both made of a shape memory alloy and fixedly arranged on the upper surface and the lower surface of the herringbone structure, the shape memory alloy of the upper skin is configured to be lengthened when the heating temperature is higher than the preset temperature and recover and keep the original shape when the heating temperature is lower than the preset temperature, and the shape memory alloy of the lower skin is configured tobe shortened when the heating temperature is higher than the preset temperature and recover and keep the original shape when the heating temperature is lower than the preset temperature; the heatingpieces are arranged on the upper skin and the lower skin; and the position among the skins and the herringbone structure is filled with the flexible honeycomb. By the adoption of the variable-curvature wing trailing edge, through differential motion deformation of the upper skin and the lower skin, the wing trailing edge is driven to deflect, the out-of-plane stiffness of a whole wing trailing edge structure is greatly improved, and a variable airplane structure bearing requirement is met.

The invention provides a monitoring method of a micro-grid system capable of automatically realizing energy balance. The monitoring method comprises the steps of S1, acquiring operation data of a wind-powered generating device and a photovoltaic generating device through a wind-powered generating device module and a photovoltaic generating device module on real time, and storing the data; S2, predicating output power of the wind-powered generating device and the photovoltaic generating device within the preset time in the future according to the operation data of the wind-powered generating device and the photovoltaic generating device; S3, detecting to obtain SOC of a storage batter module and capacitance voltage values of a super capacitor on real time, and acquiring the load power demand condition in a micro-grid on real time; S4, acquiring large grid parameters and scheduling information on real time, and predicating the power demand of a connecting point between the micro-grid and the large grid in the future; S5, optimally operating the micro-grid by using the power demand of the connecting point between an energy storing station and the large power grid, the current energy SOC of the storage battery and the capacitance voltage of the super capacitor, the current load power demand in the power grid, and the output power of the wind-powered generating device and the photovoltaic generating device in the future as the constraining conditions.

The invention aims to provide a collapsible loess foundation treatment method. A shallow-layer soil body and a deep-layer soil body of the foundation are reinforced, collapsing is eliminated, and then collapsing of the soil bodies is eliminated by adopting a water soaking method. The collapsible loess foundation treatment method includes the steps: 1), using a dynamic compaction method to ram a surface-layer soil body of the foundation; 2), uniformly forming pouring holes; 3), filling a bottom-end soil body for ramming; 4), pouring water and filling aggregate; 5), observing settlement until collapsing deformation is stable. In addition to the above objects, in order to further improve load-bearing capacity of a foundation soil body. The invention further provides another collapsible loess foundation treatment method. The treatment method includes the steps: 1), using a dynamic compaction method to ram a surface-layer soil body of the foundation; 2), uniformly forming pouring holes; 3), filling a bottom-end soil body for ramming; 4), pouring water and filling aggregate; 5), observing settlement until collapsing deformation is stable; 6), rearranging pile position points, and vibrating or hammering to form holes at certain depth; 7), filling fillers and ramming; 8), repeating filling and ramming operation until compaction pile bodies are formed.

A method is described for joining two sheets (1, 2) of aluminum material on the one hand and iron or titanium material on the other hand by a welding-soldering joint by using a filler, with the iron or titanium material being provided at least in the joining region with a coating preferably on the basis of zinc or aluminum before the filler is applied by forming a weld seam (4) under melting. In order to provide advantageous joining conditions it is proposed that the two sheets (1, 2) are joined in the form of a butt-joint, with the filler on the basis of aluminum being applied for the formation of the weld seam (4) on both sides of the sheet in a region bridging the joint onto the sheet (1) made of iron or titanium material in a width (b) corresponding to at least three times the thickness (d) of said sheet (1).

The invention relates to a combined load loading device for a pile foundation in field testing. The combined load loading device is used for applying combined loads to single piles and pile groups in the loading and unloading process in various fields. The loading device comprises a vertical loading assembly, a horizontal loading assembly, a test pile vertical deformation measuring assembly and a test pile horizontal deformation measuring assembly, wherein the vertical loading assembly is used for applying vertical loads to the pile foundation in field testing, the horizontal loading assembly is used for applying horizontal loads to the pile foundation in field testing, the test pile vertical deformation measuring assembly is used for measuring the deformation after vertical loading of the test pile, and the test pile horizontal deformation measuring assembly is used for measuring the deformation after horizontal loading of the test pile. Compared with the prior art, the limitation of the singular loading direction in field loading tests through original test devices of the type is broken through, combined load tests can be carried out on various types of pile foundations in field testing, vertical and horizontal loads which are randomly combined can be applied in different loading sequences, and therefore the combined bearing performance of the pile foundation can be better analyzed.

The invention discloses a compacting grouting and reinforcing technology for floor foundation of fly ash soil layer and backfilled stone layer in smelting workshop, comprising the following steps of (1) measuring hole positions: measuring hole positions and marking hole positions; (2) inserting pipes: adopting metal pipes with a plug for grouting pipes, configuring the total number of the grouting pipes needed by a single hole according to the designed hole depth; aligning the first section of grouting pipe with the installed plug to the hole position; installing a vibrator and leading the grouting pipe to be vibrated into the soil slowly; subsequently jointing a second section by a movable hoop and vibrating the second section into the soil; repeatedly carrying out the steps till all prepared grouting pipes are inserted; (3) preparing grout: adopting cement as a main material to prepare the grout by adding water, with the water-cement ratio controlled within 0.5:1-1:1; and (4) grouting: grouting from bottom to top; leading the pipe pulling height not to exceed 0.4m; ensuring uniform grouting at the grouting section and controlling the grouting amount within 15-20% per cube meter of the reinforced soil volume. The compacting grouting and reinforcing technology can be conveniently executed under the disadvantageous environments of crossed construction of multi-specialty and multi-type of work and extremely strained construction lands, and meets the requirement of working procedure interpenetration during the floor foundation construction inside the smelting workshop under the geometrical conditions of fly ash soil layer and backfilled stone layer.

A monitoring device of a wind, photovoltaic and storage-integrated micro-grid capable of being operated in a grid-connected manner has the advantages that the monitoring device can predict the power generation power of wind-photovoltaic power generation equipment in a micro-grid and the load change in the micro-grid, track grid connection point voltage information of large power grids, acquire large power grid scheduling instructions in real time, detect storage battery module battery capacity in real time, set energy accumulation system discharge intervals, perform optimized management on the energy of an energy accumulation system on the basis of an SOC hierarchical control strategy, correct the charging and discharging power of the energy accumulation system in real time, optimize the working performance of the energy accumulation system, make and implement most appropriate control strategies, guarantee that the micro-grid participates in large power grid voltage adjusting according to the requirements of the large power grids during grid connection, and guarantee voltage stability during grid-connected operation.

The invention discloses a device for testing compression in a rectangular steel plate surface, belonging to the field of civil engineering professional testing devices. The device is formed by connecting a square main frame with H-shaped steel through a bolt, and can be used for self-balance in a test load. In the device, a load guide rigid block is arranged between a hydraulic jack and a steel plate loading edge, so that uniform compression loading is realized, and off-plate simple support constraint conditions are provided for four sides of a test steel plate through a wedge-shaped support plate. In the entire testing device, the size of a component can be adjusted flexibly according to the size of a test piece, so that the loading requirements of steel plates of different sizes are met. Due to the adoption of the device, uniform compression testing in the rectangular steel plate surface is more convenient, and the batch testing requirements of test pieces are met simultaneously; and the device can be applied to civil engineering teaching and scientific research testing.

The invention discloses a compressor running frequency self-adaptation control method, a compressor using the control method, an air conditioner, computer equipment and a storage medium. The control method comprises the steps that according to indoor and outdoor environment temperature, the standard time T1 needed by indoor set temperature obtaining is calculated; actual time T2 for enabling the indoor environment temperature to reach the set temperature is calculated; according to the difference between the actual time and the standard time, the compressor running frequency is corrected. Whether the current air conditioner capacity output meets the room load need or not can be intelligently judged, according to the correction value, the compressor running frequency can be automatically adjusted, the unit meets the indoor air conditioner need, and specialized persons do not need to call for adjusting.