40results about How to "Reduce R&D" patented technology

The invention discloses an automatic testing device and an automatic testing method of ARINC 429 bus signal performance parameters; the device comprises a test unit, a test adapter and corresponding software program, wherein the test unit consists of a power control box, a PXI test case, a signal conditioning box, a test interface array and an input-output device; all resource modules in the test unit can be used for running a test program of the test unit by testing software under the control of a PXI control computer through a PXI bus; the adapter is meshed with an RCV end by an ITA end of a test array, and is connected with test resource modules on the test unit; and the testing software comprises two parts including testing software of the test unit and testing software specially used for the adapter. After the invention is adopted, the quality level of an ARINC 429 bus signal module product can be improved, the development of a special test device is omitted, and the development cost and the maintenance cost of the test device can be greatly lowered.

A notebook computer system with a modular function expansion structure and a removable function expansion module comprise a modular removable function expansion module. The modular function expansion module comprises at least one function expansion bin, a removable function expansion module and an electrical interface, wherein the function expansion bin is embedded in a notebook computer mainframe; the removable function expansion module can be inserted in the function expansion bin and work; and the electrical interface is connected with the removable function expansion module and the mainframe. The function expansion bin is of a single-layered or double-layered or three-layered structure; and at least a computer bus communication interface, a battery power supply interface, a data interface and an integrated interface or a combination of the computer bus communication interface, the battery power supply interface, the data interface and the integrated interface are included in the electrical interface of the function expansion bin. The removable function expansion module consists of a function component enwrapped by a shell and a module connector connected with the electrical interface, the outer appearance of the removable function expansion module or the outer appearance of the removable function expansion module after being superimposed and combined is matched with the inside space of the function module expansion bin. The invention has the advantages of stronger function expansion, configuration update and interchange and universal performance and can provide various types of quick switching external interfaces and function expansion.

The invention provides a band-shaped beam klystron outer tuning apparatus. The apparatus comprises an accommodation cavity, a tuning assembly, a trapezoid lever bracket and a control assembly. An inductance tuning mode is adopted, and a tuning piston is inserted into a band-shaped beam klystron tube body to form a cavity wall of a resonant cavity; and the motion of the tuning piston is controlled through a lever principle so as to change the size and distribution inductance of the resonant cavity and further change the resonant frequency of the resonant cavity. According to the invention, a flexible seal membrane sheet rather than a corrugated pipe is adopted for realizing tuning of the resonant cavity so that the cost is reduced, and the structure is simplified.

The invention discloses a configuration and testing system in a high-performance communication computing architecture system, comprising: a JTAG bridge, located on a single board to be tested, and used to gate the JTAG connected to the JTAG bridge under the control of a test control unit Device, JTAG chain, JTAG bridge and/or JTAG drive; test control unit, used to obtain test vectors for testing or configuration, and control the JTAG bridge to select the JTAG device and JTAG chain connected to the JTAG bridge , JTAG bridge chip and/or JTAG driver, so as to connect to the specified JTAG device and/or JTAG chain, and send the test vector to the specified JTAG device and/or JTAG chain for testing or configuration. Thereby, the test and configuration speed in ATCA are improved and the management board test and configuration can be performed.

The invention provides an airplane complex construction member numerical control processing tool standard locator automatically selecting method. Domain definition system and product joint position can be defined by calculation, and a candidate locator and an optimal locator are determined, so as to determine the type and specification of the standard locator meeting the locating requirement. The method can be applied to development of 'tool rapid generating sub system' standard locator automatically selecting program in the 'airplane complex construction member rapid numerical control processing ready system'. Tool design efficiency is improved, tool development and even the whole production ready period is shortened, and application benefit is favourable. Besides, the invention can be applied to automatic calling of airplane manufacturing tool and other special standard component. When applying the method, only manual selection of product joint and locator supporting surface is required, the standard locator can be automatically selected, automation, intellectualization and rapid design of locator can be realized, and design efficiency and quality of complex construction member numeric control processing tool is improved, thus shortening airplane development period.

The invention discloses a combustion performance testing method for a gel propellant. The method comprises the following steps: directly taking a prepared gel propellant as a sample to be tested and injecting the sample into a thin-wall straight plastic pipe of which the inner diameter is 8mm-10mm and one end is closed to prepare a powder pipe to be detected; fixing the powder pipe to be detected on a powder rack of a combustion room; placing ignition powder on one unclosed end and fixing by using a nickel-chrome wire; coating an end face by using a coating agent; and putting the powder rack of the combustion room, which carries the fixed powder pipe to be detected, into an underwater acoustic emission combustion speed meter to test a combustion speed and finally calculating an average combustion speed, a combustion speed pressure index and a combustion speed temperature sensitivity coefficient. The method is simple and easy to operate and short in testing period, and can rapidly and accurately test the combustion performance of the gel propellant.

The invention discloses a method for determining weak links in mechanical system virtual design, which includes the following steps: (1) establishing a mechanical system virtual model machine; (2) building a mechanical system overall performance index evaluating system according to the mechanical system virtual module machine; (3) structuring a mechanical system design performance evaluating model based on the extension superiority theory; and (4) determining the weak links of the mechanical system design scheme. The method has the advantages that on the basis of the extension superiority evaluation method, quantification of quantitative indexes can be solved well by building correlation function, the problems of related many factors, nonlinearity and uncertainty of the mechanical system performance can be solved well, weakest indexes can be determined by structuring an index weakness model, and the integral performance of a mechanical system is improved conveniently. In addition, by the method, design efficiency and overall performance of the mechanical system are improved, waste of resources is reduced, and the cycle for research, development and experiment is shortened.

The invention discloses a metastable beta-type Ti-Mo-Si system biomedical alloy and a preparation method thereof. The metastable beta-type Ti-Mo-Si system biomedical alloy comprises the following raw material components in percentage by weight: 88.00-90.00 percent of sponge titanium, 0.00-2.00 percent of silicon and 9.5-10.50 percent of molybdenum. The preparation method comprises the following steps of: firstly, respectively weighing raw material according to the weight percentage of the raw material components; secondly, uniformly mixing the raw materials and melting the raw materials by using non-consumable arc; and finally, cooling to obtain an alloy cast ingot with a uniform structure. According to the metastable beta-type Ti-Mo-Si system biomedical alloy and the preparation method thereof disclosed by the invention, the non-poisonous molybdenum and low-price silicon are added to improve the phase composition and the mechanical property of a titanium alloy, so that the mechanical property of the alloy is better matched with that of natural bone of a human body. The low-price silicon is used as one of alloying elements, so that the production cost of the alloy is effectively reduced.

The invention belongs to the field of microwave measurement, and relates to a multi-frequency point phase distribution method for radar antenna array elements. The multi-frequency point phase distribution method comprises the following steps: S1, connecting a test probe into an appointed antenna array element; S2, sending control information corresponding to a frequency point of the appointed antenna array element to an array plane control source by a control computer; S3, measuring data corresponding to the frequency point by using a vector network analyzer, and transmitting the data to the control computer through a GPIB (general purpose interface bus) cable; S4, storing the data in a corresponding database after the data under the frequency point is received by the control computer and corresponding data processing is performed; S5, judging whether the phase distribution of all the frequency points of one array element is finished or not; S6, judging whether the phase distribution of all the frequency points of all the array elements is finished or not. The plug time of each frequency point is greatly reduced, so the plug time of a whole phase distribution cycle is further shortened, manpower, material resources and financial resources in the phase distribution process are saved, and the development cycle and the production cycle are greatly shortened.

A supply chain system based on simulation and a digital prototype comprises a supply chain platform running on a server, and the supply chain platform is provided with a motor release module, a simulation module, a motor integration module, a search module, a wearable device connection module, a user management module and an online transaction module. According to the invention, a customer can search a required motor product on the supply chain platform, and visually check the appearance 3D model, function and performance simulation of the digital motor. The digital motor has consistent functions and characteristics with a physical prototype, and a client can directly sense the vibration, temperature rise, temperature and other conditions of the digital motor through the wearable device with the sensor, so that the digital prototype is realized. The electrical parameters of the digital motor displayed by the supplier on the platform all cover each working condition, and are more visual. A virtual-real combination mode is adopted, and model selection and matching of electromechanical products such as a motor by a user are facilitated.

The invention discloses an operation switching device based on PCIE X16-MXM, and belongs to the technical field of operation switching plate design. The invention aims to solve the problems that the current MXM computing card cannot be directly used on a desktop PC and a server, and the development and use cost of a user is relatively high. The PCIE X16 golden finger adapter comprises an adapter plate, a PCIE X16 golden finger, an MXM 3.0 interface, an MXM operation card, an I2C ROM interface and a PCIE-MXM signal line. A PCIE X16 golden finger is arranged on the adapter plate, and the PCIE X16 golden finger can be inserted into a server with a PCIE X16 slot; The adapter plate is further provided with an MXM 3.0 interface and an I2C ROM interface, the MXM 3.0 interface carries an MXM operation card, and the I2C ROM interface is used for storing firmware programs; PCIE-X16 golden finger between MXM 3.0 interface and PCIE X16 golden finger And the MXM signal lines are connected. The invention is used for realizing the direct connection use of the MXM operation card and the PC or the server.

The invention belongs to the field of metal material corrosion and protection, and particularly relates to a compounded corrosion inhibitor suitable for electric coupling of N80 steel and stainless steel and a preparation method thereof. The compounded corrosion inhibitor comprises the following components in percentage by mass: 50%-60% of phosphonyl carbamido flaxseed oil derivatives, 10%-20% ofpolyaspartic acid, 10%-20% of sodium molybdate and 10%-30% of isopropyl alcohol, wherein the sum of the mass percentages of the components is 100%. The compounded corrosion inhibitor suitable for electric coupling of N80 steel and stainless steel and the preparation method thereof have the benefits as follows: the corrosion inhibition efficiency is high, the production cost is low, and the compounded corrosion inhibitor further has the characteristics that the environmental friendliness is achieved, and the normal operation of the equipment is not affected.

The invention provides a platformization design method of steering trapezoids. A first steering trapezoid suitable for a first vehicle-type vehicle is designed, the first steering trapezoid makes themaximum internal steering angle of the first vehicle-type vehicle be alpha 1 and the maximum external steering angle be alpha 2, and the first steering trapezoid is provided with a first trapezoid arm; and a second steering trapezoid suitable for a second vehicle-type vehicle is designed, the maximum internal steering angle of the second vehicle-type vehicle is alpha 1, the maximum external steering angle is alpha 2, the second steering trapezoid is provided with a second trapezoid arm, and the second trapezoid arm and the first trapezoid arm are the same, wherein the first vehicle-type vehicle and the second vehicle-type vehicle are different, and the first steering trapezoid and the second steering trapezoid share a production platform. In this way, the second steering trapezoid can be designed according to the first steering trapezoid, research and development of the steering trapezoid of the new vehicle model can be reduced, the research and development time and cost can be reduced, design defects can be avoided, and the research and development cycle of the vehicles can be shortened.

The invention provides an air jet engine using a piston engine as an air compressor and application thereof. The air jet engine is characterized in that: by the motion of a piston in the piston engine, air entering an air cylinder is directly or indirectly compressed, and the compressed air and fuel are mixed and combusted in a combustion chamber and then jetted out from a jet pipe so as to generate a required propelling power. The piston engine and a ram jet are combined to form a ram pressure/piston jet engine. The gas jet pipes are arranged in all directions of an aircraft, so that the aircraft can obtain the abilities of vertical takeoff and landing, hovering and flexible turning. The gas is tangentially jetted by nozzles at the tail ends of aerovanes of the aircraft, so that the aerovanes can obtain higher rotary power and speed.

The invention belongs to the field of metal material corrosion and protection, and relates to a B30 copper-nickel alloy compound corrosion inhibitor suitable for a strong acid medium and a preparationmethod thereof. The B30 copper-nickel alloy compound corrosion inhibitor suitable for the strong acid medium is prepared from a benzotriazole linseed oil amide derivative, carbamido linseed oil, sodium molybdate and isopropanol. The corrosion inhibitor has the following advantages that on the one hand, the benzotriazole linseed oil amide derivative, as a main agent of the corrosion inhibitor, haswide sources and is environmentally friendly; the production process is simple, and purification postprocessing of products is not required; and on the other hand, through compound use with other reagents, uniform corrosion and corrosive pitting of white copper B30 materials can be inhibited, and corrosion inhibition efficiency in the strong acid corrosive medium is over 98%.