13results about How to "Increase design difficulty" patented technology

The invention discloses an aircraft vertical takeoff process control method and system and a storage medium, and realizes stable transition of an aircraft from vertical takeoff to flight in an advancing direction through accurate control of the rotating speed of a tilting rotor and optimization of a tilting process. In the transition process of the aircraft, by reducing the rotating speed of the tilting rotor wings, the influence of aerodynamic disturbance generated by the tilting rotor wings on the wings and the aircraft body is avoided, so that the flight comfort and safety are improved; meanwhile, the flight speed and the flight height of the aircraft in the transition period are maintained by depending on the propelling propellers, the design of a flight control system is simplified, and the complexity and the redundancy of the control system are reduced; the aircraft adopting the takeoff process control method has higher safety, stability and comfort, and is suitable for various application scenes including the fields of urban air traffic and emergency rescue.

The invention discloses a method and a system for controlling a vertical landing process of an aircraft and a storage medium, and realizes stable transition of the aircraft from vertical take-off and landing to the ground by accurately controlling the rotating speed of a tilting rotor and optimizing the tilting process. In the transition process of the aircraft, by reducing the rotating speed of the tilting rotor wings, the influence of aerodynamic disturbance generated by the tilting rotor wings on the wings and the aircraft body is avoided, so that the flight comfort and safety are improved; meanwhile, the flight speed and the flight height of the aircraft in the transition period are maintained by depending on the propelling propellers, the design of a flight control system is simplified, and the complexity and the redundancy of the flight control system are reduced; the aircraft adopting the take-off and landing process control method has higher safety, stability and comfort, and is suitable for various application scenes including the fields of urban air traffic and emergency rescue.

The invention provides a burning method and device for a vehicle-mounted system chip, equipment, a medium and a program. The burning method comprises the following steps: initializing a memory; second bootstrap program firmware with an Ethernet controller is received, a second bootstrap program is started, and the Ethernet controller is used for achieving information transmission through the Ethernet; receiving the operating system, and booting the operating system to start through the second bootstrap program; and receiving the mirror image file, and burning the mirror image file through the operating system. According to the vehicle-mounted system chip burning method, device and equipment, the medium and the program, by conducting guiding step by step, the operating system is arranged in the vehicle-mounted system chip, the operating system can be in communication connection with a computer through the Ethernet, the burning speed is greatly increased, meanwhile, the operating system can conduct multi-thread operation, and the burning efficiency is improved. And a plurality of burning files can be burnt at the same time, so that the burning speed is further improved.

The invention provides a subjective and objective combined empowerment calculator, which belongs to the technical field of decision evaluation, and is characterized in that efficient and accurate empowerment calculation and intuitive operation experience are provided for a user by combining a man-machine interaction window of a front panel and a background program language. The calculator is designed on the basis of a Matlab graphical user interface, is completely compatible with Matlab7.0 and above versions, and ensures smooth calculation and graphical display. A user can input a weight in a vector form through a front panel, and the operation is simpler and more convenient through interface guidance. Compared with a traditional mode, the calculator has the advantages that the data input and processing efficiency is greatly improved, the risk of wrong input is reduced, and a non-professional person can easily complete a complex weighting calculation task. According to the design, on the basis of the prior art, the speed and accuracy of data analysis are remarkably improved, and the requirement for modern rapid data processing is met.

The invention discloses an adjustable universal electrode holder for a side gate round bar electrode, and relates to the technical field of injection mold part production. In order to solve the problems that the position limitation of a glue opening in the upper side of an existing part is large, and the discharge machining difficulty is large, the following technical scheme is provided that the electrode comprises an electrode base, a base positioning hole is formed in the top of the electrode base, a rotatable C-axis rotating body is arranged in the base positioning hole, and the bottom of a connecting rod is sleeved with the C-axis rotating body; the top of the connecting rod is provided with a lateral rotating assembly capable of rotating laterally, and a cylindrical electrode is arranged in a hole in the side end of the lateral rotating assembly. The method has the remarkable beneficial effects that the design and machining difficulty is reduced, the machining cost is reduced, the machinability of complex shapes of parts and rubber openings is improved, the requirement for smooth machining of special complex shapes is met, and the machining precision and efficiency are improved. The scheme has a wide application prospect and an important practical value in the field of discharge machining.

This utility model relates to the field of compressor technology and discloses a fully enclosed single-stage centrifugal compressor, including a lower casing, an upper casing, an impeller, a rotating main shaft, and a motor stator. An impeller and a thrust disc are provided on one side of the rotating main shaft. The main body of the rotating main shaft is rotatably connected to the upper and lower casings via radial bearings on both sides, and the main body of the rotating main shaft is rotatably mounted in the motor stator, which is mounted on the lower casing's internal fixed seat. The upper and lower casings are connected by welding. A refrigerant inlet is provided on the side of the lower casing, and a refrigerant outlet is provided on the volute. This utility model uses refrigerant as the compressor's compression medium. The refrigerant enters through the lower casing inlet, passes through the lower and upper casings, is compressed by the impeller, and flows out through the outlet. Simultaneously, the refrigerant cools the motor stator, reducing the number of compressor parts and improving heat dissipation efficiency. Furthermore, the bearings used in this utility model are air-suspended or magnetic-suspended bearings, eliminating the need for lubrication and increasing energy efficiency.

The application provides a method for forming a calendered glass with a thickness of less than 2mm, and belongs to the technical field of calendering of glass. The method comprises the following steps: flowing a glass melt with a viscosity of less than 10 4 Pa·s into a closed container containing a metal liquid; when the viscosity of the glass melt increases to 10 5.3 -10 5.8 Pa·s, the glass melt is formed into a viscoelastic glass ribbon with a certain width and a thickness of H1 by horizontal drawing, and H1<4mm; when the viscosity of the viscoelastic glass ribbon increases to 10 5.8 -10 6.3 Pa·s, the viscoelastic glass ribbon is introduced between an upper calendering roller and a lower calendering roller through a guide roller; after being drawn and extruded by the upper calendering roller and the lower calendering roller, the viscosity of the viscoelastic glass ribbon is greater than 10 6.8 Pa·s, the thickness is H2, H1>H2, and H2≤2mm; and the viscoelastic glass ribbon is annealed and cooled to obtain a product. The method is used for producing calendered glass with a thickness of less than 2mm.

The embodiment of the invention discloses an optical communication device for a deep sea environment. According to one specific embodiment, the optical communication device for the deep sea environment comprises a conical lens, a main reflector, a second reflector, a detector target surface, a lens mounting support and a connecting support, and the lens mounting support comprises a first lens mounting groove, a second lens mounting groove and at least one connecting column. At least one connecting column is connected between the first lens mounting groove and the second lens mounting groove; the main reflecting mirror is fixed in the first lens mounting groove, the conical lens is fixed in the second lens mounting groove, and the central points of the main reflecting mirror and the conical lens are on the central axis of the lens mounting bracket; the second reflecting mirror is fixed on at least one connecting column through a connecting bracket; and the detector target surface is fixed on one of the at least one connecting column. According to the embodiment, not only can the daylighting rate be ensured, but also the pressure-resistant requirement is reduced, the size and the weight of equipment are effectively reduced, and the manufacturing cost is reduced.

This application discloses a display panel, its driving method, and a display device, relating to the field of display technology. The display panel includes a backlight module, an array substrate, a color filter substrate, and a liquid crystal layer disposed between the color filter substrate and the array substrate. The backlight module is disposed on the side of the array substrate away from the color filter substrate. The display panel also includes a color-switching layer disposed on the side of the liquid crystal layer away from the array substrate. The color-switching layer includes multiple color-switching structures and multiple black matrices. Each color-switching structure has a black matrix at its edge. Each color-switching structure includes a transparent area and a color-switching area, with an insulating layer between the transparent area and the color-switching area. Light emitted from the backlight module passes through the liquid crystal layer and enters the color-switching layer. The light color remains unchanged after passing through the transparent area, but changes color after passing through the color-switching area. By setting the color-switching layer, the display panel of this application changes the light emitted by the backlight module, achieving multi-color display technology without adding additional sub-pixels.

The invention relates to a method for realizing memory storage based on a single chip microcomputer. The method comprises the following steps: after the single-chip microcomputer is powered on, reading a first-time power-on judgment address in an address register of the single-chip microcomputer, and comparing the first-time power-on judgment address with a predefined fixed value: if the first-time power-on judgment address is different from the predefined fixed value, judging that the single-chip microcomputer is powered on for the first time, initializing the single-chip microcomputer, and writing the predefined fixed value into a data register; meanwhile, the single-chip microcomputer operates in a first working mode; if the working mode numbers are the same as the working mode numbers, judging that the working mode numbers are not powered on for the first time, reading the working mode numbers stored previously from the mode number storage address in the address register, and putting the working mode numbers into the temporary storage address of the general register so as to recover the mode before power failure; the general register is used for temporarily storing the working mode numbers, and when the lamp string is switched to different working modes, the working mode numbers corresponding to the working modes are stored in the mode number storage address. According to the invention, the memory storage function is realized by modifying the program of the single-chip microcomputer, and the cost is reduced.

The invention relates to the field of intelligent storage equipment, in particular to a jacking and reversing integrated structure for an intelligent four-way pallet truck. Comprising an eccentric wheel, a follower, a reversing block, a jacking block, a spring and a vehicle body, the reversing block is arranged below the center of the eccentric wheel, the jacking block is arranged above the eccentric wheel, the lower end of the compression spring is fixed to the bottom of the vehicle body, and the upper end of the compression spring is fixed to the top of the reversing block. The technical scheme is simple in structure, and can improve the internal space of a vehicle body, thereby increasing the power supply volume and reducing the production cost.

The invention discloses an inner and outer trajectory integrated solid rocket engine jet pipe divergence ratio optimization method. The method comprises the steps that inner and outer loop optimization calculation is carried out; optimizing the expansion ratio of the outer loop spray pipe; and optimizing the trajectory in the inner loop. According to the method, when the expansion ratio of the engine jet pipe is designed, optimization of inner trajectory parameters and the optimality of the impact mass ratio of the actual flight working condition are comprehensively considered, and engine overall parameter design conducted according to experience in the past is converted into a computer automatic optimizing process; the obtained optimal expansion ratio of the engine jet pipe and the corresponding inner ballistic parameters can effectively improve the maximum range of the guided rocket projectile and promote the improvement of the design level.

This application relates to the field of radio frequency microwave circuit technology and discloses a hybrid integrated millimeter-wave coaxial radial triode, including a first coaxial line, a dielectric substrate, three output circuits disposed on the dielectric substrate, and a second coaxial line. The output circuit includes a coaxial probe, an arcuate stripline, and a width-change-abrupt stripline connected in sequence, with at least one slot structure disposed on the arcuate stripline. This application utilizes a concentric arcuate stripline disposed inside the first coaxial line solely for transmitting excitation signals, and employs a circuit design on the arcuate stripline that enables the implementation of a bandpass filter structure. This allows the signal excited and coupled by the coaxial probe to be transmitted via the arcuate stripline to three signals of different specific frequency bands to a standard microstrip line connected outside the first coaxial line. This effectively improves upon the problem of the difficulty and large workload in designing common port impedance matching networks in traditional circuit structures.