37results about How to "Applicable design" patented technology

The invention provides an airplane Herbst maneuvering control method, and the method is based on a dynamic reverse idea. A designed controller comprises an outer ring flight path controller and an inner ring posture controller. The outer ring flight path controller calculates an attack angle instruction, a sideslip angle instruction, an instruction of a roll angle about the velocity vector and an engine thrust instruction for controlling the velocity of an airplane for achieving the set maneuvering light path. The inner ring posture controller controls the attack angle, the sideslip angle and the roll angle about the velocity vector through operating a pneumatic control plane of the airplane and a thrust vector. The method obtains an analytical expression of the outer ring flight path controller, wherein an attack angle instruction controller has an I controller form in a PID controller, and avoids the complex numerical calculation. Meanwhile, the method can adjust the solving precision of the control instruction, and is more suitable for the design of an airplane Herbst maneuvering controller in the engineering field.

The invention relates to an underground interchange bifurcate tunnel underground excavation structure which comprises at least one grade of transition segment with the section width gradually increased, a large-span tunnel maximum-section segment connected with the last grade of transition segment, a multi-arch tunnel segment, a small-distance tunnel segment and a separated tunnel segment. A reserved middle rock pillar bifurcating a tunnel is arranged between the small-distance tunnel segment and the separated tunnel segment. A middle partition bifurcating the tunnel is arranged in the middle of the multi-arch tunnel segment. One end of the bifurcated small-distance tunnel segment is connected with the multi-arch tunnel segment. One end of the bifurcated multi-arc tunnel segment is connected with the large-span tunnel maximum-section segment. The bifurcated separated tunnel segment is connected with the other end of the small-distance tunnel segment correspondingly. Compared with the prior art, according to the underground interchange bifurcate tunnel underground excavation structure, through conversion and transition of various tunnel section structures, bifurcation of the underground interchange tunnel is achieved, and the underground interchange bifurcate tunnel underground excavation structure is particular suitable for design and application of an urban underground interchange road.

The invention provides a potassium niobate sodium-based multi-layer piezoelectric ceramic element. A chemometry general form of a formula of potassium niobate sodium-based leadless piezoelectric ceramics is that [(Na0.52K0.44)1-xLix] (Nb0.93-ySb0.07Tay)O3, wherein 0.02<=x<=0.06, 0.02<=y<=0.06, a piezoelectric constant ranges from 300 pC/N to 350 pC/N and even higher, a dielectric constant ranges from 1700 to 2000, and an electromechanical coupling coefficient ranges from 0.40 to 0.45.

The invention discloses a radio-frequency power amplifier circuit with adjustable predistortion function, comprising a transistor in emitter follower structure; wherein the base electrode of the transistor is connected with the input terminal of the amplifier circuit, the emitter of the transistor is connected with the output terminal of the amplifier circuit by virtue of an output matching network, an RC parallel negative feedback network is connected between the base electrode of the transistor and the collector electrode of the transistor, a first RL series negative feedback network is connected between the collector electrode and an external adjustable bias voltage, and a second RL series negative feedback network is connected between the emitter of the transistor and the ground. Predistortion circuit can be caused to have better accuracy, gain compression and positive phase deviation produced by power amplifier post-stage circuit can be compensated, and linearity thereof can be improved.

The invention provides a planetary swingby trajectory assessment method for a deep space probe, and solves the problems of low assessment precision and low assessment efficiency of an existing planetary swingby trajectory assessment method. The method comprises the following steps of 1, generating optimal planetary swingby trajectory sample data; 2, building a mapping model of an optimal planetaryswingby trajectory performance index and a target trajectory parameter; and 3, performing assessment on planetary swingby trajectory performance by utilizing the mapping model: according to a trajectory number P of a to-be-assessed detection target of a given task, calculating the optimal planetary swingby trajectory performance index delta V* required for rendezvous of the probe and the detection target by utilizing the mapping model obtained in the step 2, thereby realizing optimal planetary swingby trajectory assessment for the to-be-assessed detection target.

The invention provides an emergency intelligent drainage system and particularly provides a tunnel emergency intelligent drainage system with the cleaning function under a high-water-pressure fracture zone. All annular drainage pipes are connected through standby longitudinal connecting pipes, and an emergency drainage net is formed, can automatically adjust the drainage amount according to the external water pressure of a lining under the condition of the high-water-pressure fracture zone and has the pipeline cleaning function. The emergency intelligent drainage system comprises the drainage net, and the drainage net comprises a plurality of annular drainage pipes which are mutually spaced and are connected through longitudinal blind pipes at the arch bottom. The system is characterized by further comprising the drainage net and water-permeable geotechnical cloth, and the drainage net further comprises waist longitudinal connecting pipes, longitudinal intersecting connecting pipes and water pressure control valves.

The invention discloses a multi-dimension design method of a relational database, wherein the relational database is provided; and the method comprises the steps of performing the analysis of data latitude: performing the analysis design on dimensions of time, belonging, business, state and sequence of data in the relational database; and establishing a latitude mode of the data: establishing a time latitude mode, a belonging latitude mode, a business latitude mode, a state latitude mode and a sequence latitude mode through the analysis design to the dimensions so as to form a multi-dimension database. Compared with the existing relational database, the method provided by the invention is applicable to the design of various database systems using the relational database; the operation speed of a relational database system is increased; the long-term rapid operation of the database system is ensured; the mass storage and the real time access of the database system are realized within a containable range of a storage device; and the requirement of the database system to hardware and the operation cost are reduced.

The invention discloses a bidirectional silicon controlled rectifier and a preparation method thereof. Actually, the structure of the cathode of the original unidirectional silicon-controlled rectifier without the hysteresis effect is completely removed, and then the two structures for the original unidirectional silicon-controlled rectifier without the hysteresis effect are connected in a left-and-right symmetric manner; the bidirectional silicon-controlled rectifier provided by the invention is a bidirectional device, and can be simultaneously suitable for the design of an anti-static protection circuit of positive and negative high-voltage IO ports. Besides, the trigger voltage of the hysteresis effect of the bidirectional silicon-controlled rectifier can be adjusted by adjusting the second distance, and compared with a silicon-controlled rectifier without the hysteresis effect in the prior art, the bidirectional silicon-controlled rectifier provided by the invention has higher trigger voltage.

The invention discloses 3D camera simulation debugging equipment. The 3D camera simulation debugging equipment comprises a support, a first Y-direction coarse adjustment mechanism, a second Y-direction coarse adjustment mechanism and a detection platform installed on the support; the first Y-direction coarse adjustment mechanism comprises a first sliding seat and a first elastic structure; the first sliding seat can be mounted on the support in a manner of moving relative to the support in the Y direction; a first graduated scale is arranged on the support; a first indicating arrow pointing tothe graduated scale is mounted on the first sliding seat, and a laser mounting seat for mounting a laser is fixed on the first sliding seat; the second Y-direction coarse adjustment mechanism comprises a second sliding seat and a second elastic structure; the second sliding seat can be mounted on the support in a manner of moving relative to the support in the Y direction; the support is providedwith a second graduated scale; and the second sliding seat is provided with a second indicating arrow pointing to the second graduated scale and a camera mounting seat for mounting a camera module. According to the 3D camera simulation debugging equipment, multi-dimensional adjustment of the relative positions of the laser and the camera module in the Y direction can be realized so as to be suitable for the design of various 3D cameras.

The invention relates to a marine fuel cell power supply system and a fuel cell ship. The marine fuel cell power supply system comprises a gas source, an air compressor, an air filter, a modular fuel cell assembly, a heat exchange device, a power distribution system and a control system, wherein the gas source arranged above a deck; the air compressor is arranged below the deck; the air filter is connected with an air inlet of the air compressor; the fuel gas input end of the modular fuel cell assembly is connected with the gas source, and the air input end of the modular fuel cell assembly is connected with an air outlet of the air compressor; the heat exchange device is arranged at the bottom of a cabin and is connected with a cooling pipe system in the modular fuel cell assembly; the power distribution system is connected with the power output end of the modular fuel cell assembly; and the control system is arranged in a control room and is connected with the power distribution system and the modular fuel cell assembly respectively. According to the invention, the power density is improved by adopting the modular design, the marine fuel cell power supply system can be applied to a relatively large ship, and integrated installation is not needed after the modular design is adopted, so that the installation of the ship fuel cell power supply system is more flexible, and the space in the ship can be better utilized for arrangement.

The invention provides a temporary support device for a fault fracture zone mountain tunnel steel arch, and belongs to the technical field of tunnel structure safety. The supporting device comprises two end part fixing devices, a flexible supporting rod, and a control box; both ends of the flexible supporting rod are connected with one end part fixing device respectively, and the middle part of the flexible supporting rod is provided with the control box. The flexible supporting rod is used for adjusting the dimension of the whole supporting device, and controlling the distance between two endpart fixing devices, thus the two end part fixing devices are located at left and right sides of the cross section of a tunnel; the control box is used for slightly adjusting the length of the flexible supporting rod. The temporary support device is mainly applicable to a lining supporting device at the fault fracture zone of a mountain tunnel, and slightly adjust according to the stress and deformation feature change of the steel arch, thus the steel arch is reasonable in stress; the connection between the end part fixing devices and the steel arch is convenient and fast for not requiring complex fixing procedures; moreover, the temporary support device is convenient to mount and dismount, and access of the vehicle and other mechanical devices is not influenced.

The invention provides a flexible silver oxide electrode, a manufacturing method and application. The manufacturing method comprises the following steps: 1, weighing a solute polyvinylidene fluoride (PVDF) and a solvent N-methyl pyrrolidone (NMP) according to a ratio, and preparing a binder; 2, weighing silver oxide powder, and adding the silver oxide powder into the binder according to a specified proportion to prepare silver oxide slurry; and 3, coating a silver foil serving as a current collector with the silver oxide slurry, drying, and cutting to prepare the flexible silver oxide electrode. According to the manufacturing method, the flexible silver oxide electrode which is high in flexibility, thin and free of formation can be manufactured, the flexible silver oxide electrode is very suitable for being used as the positive electrode of a power type and special-shaped structure zinc-silver reserve battery, and the positive electrode design of the zinc-silver reserve battery for a new generation of weapons is facilitated.

The invention discloses an anchorage design and construction method which is characterized in that an original permanent structure pile foundation of a bridge is utilized for design, pile foundations are additionally arranged at anchorage positions at the two sides of the bridge, then concrete bearing platforms are poured at the tops of the newly-added structure pile foundations and the permanent structure pile foundations, the pile foundations are embedded into the bearing platforms, the front bearing platform and the rear bearing platform are connected through a straining beam, a main cable passes through the anchorage through the embedded conduit by using the temporary zipper and is anchored on the rear anchor surface, and the anchorage is used for resisting the pulling force of the main cable. The anchorage is arranged in the mode that the permanent and temporary combined pile group foundation and the bearing platform are combined, a conventional gravity type anchorage is replaced, stress is clear, construction is convenient, the manufacturing cost is low, and development of the bridge industry can be promoted.

The invention discloses a sensor of an oil burning pump. The sensor comprises a shell and a floater rod component which is hinged to the shell, a first resistance sheet and a second resistance sheet are arranged on the shell, are in parallel connection with each other and then are electrically connected with an input lead, an electric connection end of the floater rod component is provided with afirst reed which is used for being in contact with the first resistance sheet and a second reed which is used for being in contact with the second resistance sheet, and the first reed and the second reed are in parallel connection with each other and then are electrically connected with an output lead. Compared with the prior art, the sensor of the oil burning pump has the advantages that the tworesistance sheets and the two reeds are arranged, under the situation that the height difference of the upper surface and the lower surface of the inner side of an oil tank and the rotation radius ofthe floater rod component are fixed, the number of resistance values which can be provided by the sensor of the oil burning pump is far higher than that of resistance values provided by a sensor of atraditional oil burning pump, and the sensor of the oil burning pump is extremely suitable for design of a flat oil tank sensor and has a great advantage in meeting the demand of a meter for precise display.

The invention discloses a gas turbine and aircraft engine combustor tail cylinder structure. The structure comprises a support ring, a tail cylinder body and an outlet flange; the support ring is mounted at the front end of the tail cylinder body; and the outlet flange is mounted at the back end of the tail cylinder body. The structure is characterized in that the tail cylinder body is formed by connecting multiple sections of high-temperature alloys with different high-temperature resisting performances; and according to the metal temperature distribution tendency, the part with higher temperature is a material with higher high-temperature resisting performance, and the part with lower temperature is a material with weaker high-temperature resisting performance. The structure not only can exert the mechanical performances of the materials to the greatest extent, but also can greatly reduce the tail cylinder production cost, and in particular, is suitable for design of traditional gas turbine (aircraft engine) combustor tail cylinders with higher temperature.

The invention relates to an underwater granulator granulation template, in particular to a vacuum heat insulation cover plate for the granulation template. The vacuum heat insulation cover plate provided by the invention is arranged on the surfaces of an inner ring and an outer ring of the granulation template to be capable of insulating heat conduction, convection and radiation in these portions,the heat-preservation and heat-insulation performance of the portions is improved, the transmitting speed of temperature dropping generated by inner ring and outer ring areas under the action of cooling water towards the edge of a template granulation band is reduced, the temperature difference between the edge of the template granulation band and the central portion is reduced, and the granulation quality is improved. The vacuum heat insulation cover plate for the granulation template comprises a lower cover plate, a middle support grid plate, an upper cover plate and a high-temperature resistant heat insulation coating. According to the vacuum heat insulation cover plate for the granulation template, a main body area of the vacuum heat insulation cover plate is provided with a pluralityof independent vacuum cavities which do not communicate with each other, the inner side of the lower cover plate is provided with the high-temperature resistant heat insulation coating, and the outward convection, conduction and radiation loss of internal heat of the granulation template is insulated.

The invention discloses a side surface protection device for a blocked pressure gauge. The side surface protection device comprises an instrument body (1). The instrument body (1) is provided with a circular cavity (3) for placing a pressure sensor (2). A protective cover plate (4) is arranged on the top of the circular cavity (3). A cover plate groove (5) corresponding to the protective cover plate (4) in shape is formed in an opening of the circular cavity (3). A blind hole (6) is formed in one end of the protective cover plate (4), and a spring (7) and a limiting pin (8) are arranged in theblind hole (6). A limiting pin groove (9) is formed in the position corresponding to the limiting pin (8) of the instrument body (1). According to the side surface protection device for the blocked pressure gauge, a welding structure is not adopted any more in the protection structure of a side sensor of the blocked pressure gauge, repeated mounting and dismounting can be achieved, and the problem that the sensor at the position cannot be independently maintained is solved. In addition, the side surface protection device for the blocked pressure gauge has the advantages of being simple in structure and convenient to install and use, and is particularly suitable for design and use of an oil field blocked pressure gauge.