111results about How to "Increase design difficulty" patented technology

The invention discloses a dual polarized one-dimensional tightly coupled ultra wide band and wide angle sweep phased array antenna, which comprises two columns of horizontal polarization and 26 rows of vertical polarization interdigital coupled dipole antennas. The basic structure of the phased array antenna comprises upright parasitic printing medium plates for wide angle scanning, upper layer horizontal polarization interdigital dipoles, medium plates, lower layer vertical polarization interdigital dipoles as well as their horizontally extending parts, vertical polarization dipoles as well as their uprightly gradual changing and extending parts, the gradual changing microstrip line feed structures for performing feed at the ports of the dipoles, reflection grounding plates, metal enclosures at two sides of the grounding plates, power dividers and 50-ohm coaxial adapters. The tightly coupling structures among the units help the antenna achieve an ultra wide band effect. A wide angle scanning function can be achieved because parasitic printing medium plates are introduced to take the place of conventional and heavy wide angle resistance matching layers with the consequence of reduced weight and size.

The embodiment of the invention provides an organic light-emitting display panel and an organic light-emitting display device. The organic light-emitting display panel comprises first subpixels located in a first display area, second subpixels located in a second display area, a plurality of signal lines and a plurality of load units, wherein the number of rows of any column of first subpixels issmaller than that of any column of second subpixels; the plurality of signal lines include a plurality of first signal lines and a plurality of second signal lines; the first signal lines are electrically connected with a thin-film transistor corresponding to one column of first subpixels; the second signal lines are electrically connected with the thin-film transistor corresponding to one columnof second subpixels; and the plurality of load units are used for increasing load of the first signal lines and are located in a wiring area. According to the organic light-emitting display panel andthe organic light-emitting display device, the plurality of load units are used for increasing the load of the first signal lines are added, so that the difference between the load corresponding to the first signal lines and the load corresponding to the second signal lines can be reduced, the display difference of the organic light-emitting display panel can be reduced and the display effect canbe improved.

A lateral pumped fiber structure comprises: at least one active optical fiber, which is used to generate laser or amplify the laser; at least one passive optical fiber, which is used to connect a pumping source. The active optical fiber and the passive optical fiber form an optical contact in a radial direction. The manufacturing method of the lateral pumped fiber structure comprises the following steps: 1) respectively preparing an active optical fiber performing rod and a passive optical fiber performing rod; 2) respectively performing wire drawing to the prepared active optical fiber performing rod and the passive optical fiber performing rod and making the active optical fiber and the passive optical fiber; 3) coupling at least one active optical fiber to at least one passive optical fiber so that the optical contact in a radial direction between the active optical fiber and the passive optical fiber can be formed. By using the fiber structure of the invention, pumping efficiency is high; a manufacturing technology and coupling equipment are simple; costs are low. The fiber structure of the invention is especially suitable for a high power optical fiber laser and an optical fiber amplifier.

The invention provides a six-phase flux switching type permanent magnet motor which comprises stators, rotors and a rotating shaft, wherein each stator adopts a permanent magnet double salient structure, that is, the permanent magnet, the stator core and the armature winding are arranged on each stator, the stator core is assembled by an U-magnetic core and each permanent magnet embedded in the magnetic core, and the permanent magnets are of tangential alternate magnetization; the armature winding is of six-phase armature winding arranged on the stator, the six-phase armature winding adopts centralization coils, and the rotors are made of permeability magnetic material; the magnetizing directions of the permanent magnets are of the tangential of the stator circle, and the magnetizing directions of two adjacent permanent magnets are opposite to each other; the number of the armature coil and the stator groove is even number times of the phase number; and each phase 2n coils winding, and n coils are distributed at the two ends of the diameter of the stator circle respectively. And two three-phrase winding can conduct independent power supplying and generating.

The invention provides a method for designing a multi-controller memory array. In the method, more than two controllers are arranged in a system to monitor the states of failover and a hot plugging function in real time, and the system performance is approximately linearly improved with the increase of the number of the controllers. A module adopted in the designing process comprises a controller unit, a switching unit, a data caching unit, a memory cell and a power supply radiating unit, wherein the data caching unit is an independent functional unit not attached to the controllers; interconnectivity and sharing are realized between the controller unit and the caching unit through a high-speed network unit and various configuration management and status information; and flexible configuration can be performed, such as adding or deleting components in the system on line, and the like. The flexibility is embodied in that the caching unit is independent from the controllers to organize an independent memory space, and access control is performed through a network interconnection unit, so the design difficulty of the system is improved, and the reliability is increased.

The invention relates to an autonomic optimal track following design method of a free base butt-joint device, belonging to the field of motion planning and control. The invention provides a free base butt-joint device which solves the problems existing in a fixed base butt-joint device and can not be limited by fixed orbits to freely move to complete more complicated butt-joint tasks. In addition, the free base butt-joint device has more flexible movement, lower cost and higher control requirement. The invention also relates to the automatic optimal track following method by combining genetic algorithm, optimal control, and other related technologies. With the autonomic optimal track following design method, the free base butt-joint device can automatically select an optimal track in real time to complete a track following task of the free base butt-joint device.

The invention discloses a scheme of a novel phased array antenna which is low in cost and based on a cross coupling control technique among array elements and can reduce greatly overall cost and weight of phased array radars based on the fact the antenna array performance is not degraded. Some array elements in the scheme are connected to output ports of a feed network to perform direct feed, and the others perform indirect feed through cross coupling which is can be controlled flexibly, so that a novel array structure which is sparse for the feed network and is dense for array caliber surface is formed. The innovation of the low-cost phased array antenna based on the cross coupling control is that the cross coupling among the array elements is utilized but not restrained to perform coupling excitation for dummies in an array, so that the novel phased array antenna with low cost and light weight is established. The established phased array antenna combines a plurality of advantages, a periodical sparse antenna array structure guarantees that the antenna array has light weight, the cost of the phased array antenna is reduced to about half of the cost of the existing phased arrays, and the low-cost phased array antenna based on the cross coupling control can be used for wireless communication and radar systems.

An integrated electronic module based on discrete elements for electric power features that the power elements, driver, controller and protecting circuit are integrated in a function module with pins to connect with less external elements. Its advantages include high technical performance and reliability.

The invention discloses a method and a device for detecting wearing state of wearable equipment. The method includes: the step of calculating, collecting light signals according to on-off condition of light for detecting heart rate, and calculating a differential signal value DCVAL; the step of first judgment, determining whether the DCVAL is within a non-worn range, a normal range or an excessive range according to a relationship between the DCVAL and preset lower limit value, upper limit value and maximum value, wherein when the DCVAL is within the normal range, the wearable equipment is determined in a worn state. According to the method and the device for detecting the wearing state of the wearable equipment and the wearable equipment comprising the device, whether the wearable equipment is in a worn state or not can be recognized in a manner of simple calculation, short consumed time and less power consumption without adding additional structure and increasing design difficulty; when the circumstance that the wearable equipment is not worn is determined, a heart rate detection unit comprising an LED lamp can be turned off, so that power consumption can be reduced, and adverse influence on life can be reduced.

The invention provides a single-phase AC-DC conversion circuit of directional power. The single-phase AC-DC conversion circuit of the directional power comprises a power circuit, an auxiliary circuit and a control module. The power circuit is used for completing power conversion of a single-phase AC-DC. The auxiliary circuit is used for completing instantaneous detection of the input voltage, the input current and the output voltage, completing driving of an original PWM pulse, and outputting various detection values to the control module. After the control module receives the various detection values of the auxiliary circuit, the control module conducts digit arithmetic and logic processing on the basis of the principles of direct power control and double-loop control, finally, an original driving pulse is obtained, the original driving pulse is output to the power circuit after driving, on-off rules of a power device is controlled so as to enable the power circuit to complete correction of power factors, and the stable direct-current voltage is output. The single-phase AC-DC conversion circuit of the directional power achieves the single-phase AC-DC conversion of the network side unit power factors, and the single-phase AC-DC conversion circuit of the directional power has the advantages of being high in response speed, strong in anti-jamming capability and suitable for changes of loads within the wider range, and has load following features.

The invention provides a single-phase power factor corrector in direct network-side power control. The single-phase power factor corrector comprises a power circuit, an auxiliary circuit and a control module, wherein the power circuit is used for completing single-phase AC-DC (Alternating Current-Direct Current) power conversion; the auxiliary circuit is connected with the power circuit, and is used for completing the instant detection of input voltage, input current and output voltage and the driving of an original PWM (Pulse-Width Modulation) pulse and outputting measured electric quantity to the control module; and the control module is used for carrying out digital operation and logical processing according to direct power control and a single-period control principle after various detection electric quantities of the auxiliary circuit are received, obtaining an original driving pulse, and finally completing power factor correction by virtue of the power circuit and outputting stable DC voltage. According to the single-phase power factor corrector provided by the invention, the single-phase AC-DC conversion of a network-side unit power factor is realized, and the single-phase power factor corrector has the advantages of quick response speed, strong anti-jamming capacity, capability of adapting to load change in a wider range and load following characteristics, and is an ideal single-phase power factor correction scheme.

The invention discloses a method for processing a signal failure of a control sensor by using a dual-redundancy control rule, and is characterized by providing the method for processing the signal failure of the control sensor by using the dual-redundancy control rule, a dual-redundancy control rule design concept and a copy dual-redundancy control rule design principle, and a copy control rule design method and a design process of the dual-redundancy control rule. The main control rule is designed with the goal of enabling an aero-engine to obtain optimal thrust and economy in full flight envelope and ensuring the working stability and the structure strength of the engine; and the copy control rule design method provided by the invention is to perform the copy control rule design according to the copy control rule design principle on the basis that the main control rule design is finished. The method has the following advantages that the failure processing property of a digital control system is improved, the mission reliability of the aero-engine can be improved, the requirement of real-time control of the high-performance aero-engine is satisfied more easily, the method is more liable to implement, and the combination property of the aero-engine is improved.

The invention relates to a novel multi-layer structure of a rotor core. The novel multi-layer structure of the rotor core is formed by laminating punched silicon-steel sheets and embedding magnetic steel. During the design of a rotor, a double-layer structure is adopted, wherein the first layer comprises a piece of linear magnetic steel; and the second layer of magnetic steel has a V-shaped structure. Magnetic flux can be output to a largest extent by reasonably designing the length of the magnetic steel and distances between the respective magnetic steel, and the similarity of a counter potential wave form and a sine wave reaches 1.02 to 1.04. In a novel multi-layer embedded rotor sheet, on the basis of reserving the conventional advantages that a motor smoothly operates at a speed of 8,000 rpm, by the unique multi-layer structure of the rotor, the output of the magnetic flux of each electrode can be guaranteed to a largest extent, and the volume of the magnetic steel cannot be greatly increased.

One involves a gas delayed recoil method. This method is applied to: 1. Weapons with any caliber, chamber pressure and muzzle velocity can be launched with low recoil or recoilless. 2. Gas turbine engines, ramjet engines and rocket engines. As a combustion chamber subsystem, the working medium is changed from a constant pressure combustion mode to a constant volume combustion mode with higher thermal cycle efficiency. A piston is assembled in the barrel of the weapon (that is, the gun barrel or gun barrel). When the gunpowder gas in the barrel burns and expands to do work and launch the projectile, the piston is simultaneously pushed to move along the axis; when the "bore pressure-time curve" of the barrel Certainly, the special structural design of the piston allows the piston to move to the position of the exhaust hole opened on the barrel at the moment when the projectile exits the chamber, so that part of the gunpowder gas is ejected forward with the projectile and part of it is released. The gunpowder gas is ejected backward through this exhaust hole to form a recoil force to counteract the recoil momentum of the barrel.

The method to display time on mobile phone comprises: (1) once pressing the shut-down button, the system decides whether it is success to show time on power-saving mode; (2) if yes, system turns to power-saving mode, and keeps power supply as well as control circuit for processor and screen; (3) the clock circuit sends time data signal to the processor periodically; (4) the processor sends said signal to the control circuit; (5) it shows time on screen. Compared with normal state, this invention reduces power consumption effectively.

The invention belongs to the technical field of aircraft control and particularly relates to an autonomous parachute opening safety protection method and system for a small aircraft. A reliable safety protection algorithm is provided, the flight height, the flight attitude and system electric quantity are used as input variables, a gas generator detonation control command and a power source management command are used as output variables, meanwhile, the flight attitude and system electric quantity information affecting system safety work are taken into consideration, meanwhile, a denotation signal and power electricity are controlled, and safety is improved. The principle is simple, and no matter in the aspects of software implementation or hardware implementation, no obstacles exist. The system is simple in structure, easy to implement and low in cost. The threat caused by flight attitude unstability to flight safety is fully considered, the threat caused by too low electric quantity to flight safety is considered as well, meanwhile, damage possibly caused by an unfolded canopy to rotors is considered, and the effectiveness of the system is fully improved. The method and system have great market prospects and economic value.

The embodiment of the invention discloses a radio frequency front-end circuit and electronic equipment. The radio frequency front-end circuit comprises a transmitting module, a single-pole multi-throwswitch, a plurality of receiving modules and a plurality of antennas, the transmitting module is connected with the input end of the single-pole multi-throw switch, and a plurality of output ends ofthe single-pole multi-throw switch are respectively connected with the plurality of antennas in a one-to-one correspondence mode; and the plurality of receiving modules are respectively connected withthe plurality of antennas in a one-to-one correspondence manner. Method, based on one single-pole multi-throw switch, one or more signal transmitting paths in a communication network can be realized.According to the utility model, functions of a plurality of signal transmitting paths and a plurality of signal receiving paths are realized, and through the signal transmitting paths and the signalreceiving paths formed by the above structure, element difference loss caused by different elements can be improved, flexibility of circuit layout is increased, interference among radio frequency signals can be reduced, and path loss can be reduced.

The invention relates to a novel plastic cladding optical fiber in the fields of optical fiber communication, industrial control and optical fiber sensing. The novel plastic cladding optical fiber comprising a quartz core layer and a plastic ultraviolet cured clad is characterized in that the shear modulus of the plastic clad is not smaller than 150 Mpa; the thickness of the plastic clad is 10 Mum-20 Mum; the relative difference value Delta of the refractive index between the plastic clad and a pure quartz material is 2.5 percent-7.5 percent; the value of the numerical aperture NA of the optical fiber is 0.35-0.5; and the optical fiber can be used in a 850 nm window. The optical fiber has the advantages that the large numerical aperture and the low transmission loss enable the optical fiber to be applied in the short-distance and medium-distance data communications, the industrial control and the medical photoelectric products.

The present invention discloses a nonlinear illumination adaptive image splicing method. The method comprises: calibrating a video camera, carrying out image acquisition on a cylindrical bearing by the video camera and expanding a cylindrical bearing image obtained by acquisition into a flat image; and carrying out median filtering on the flat image obtained after expansion, and carrying out nonlinear illumination adaptive image splicing on a bearing lateral surface image obtained after filtering so as to form a complete flat image without redundancies. According to the present invention, the factor of nonuniform illumination of an acquired object is considered; in the image splicing process, an illumination nonuniform compensating factor is introduced; introduction of the factor is beneficial for improving quality of image splicing and reducing the original feature of the image; and the nonlinear illumination adaptive image splicing method is simple to operate, is easy to understand and has a high computing speed.

The invention provides a double-sweepback waverider design method of a fixed plane shape based on a projection method. The double-sweepback waverider generated by the method has waverider characteristics and high-attack-angle nonlinear lift force at a high speed, the lift force amplification is as high as 22.41% at a 20-degree attack angle, the lift-drag ratio reaches 7 at a low speed, a vortex wave effect is achieved to improve the lift-drag ratio, and the aerodynamic performance of a wide speed range is achieved.

The invention discloses a low-COD (Chemical Oxygen Demand) high-ammonia-nitrogen livestock wastewater treatment process, and belongs to the field of biological sewage treatment. The treatment process is divided into a pretreatment stage and a biochemical treatment stage specific to the characteristics of livestock wastewater quality. The treatment process comprises the following steps: firstly, removing large-particle suspended matters through a gradual screening tank and a primary sedimentation tank; homogenizing water quality and water amount in an adjusting tank, and adding wastewater into a dosing reaction tank; making the wastewater flow into a coagulating-precipitating tank in order to remove most suspended matters; added a NaOH solution into effluent for adjusting pH, introducing the effluent into an ammonia-nitrogen blow-off tower, adding hydrochloric acid into the effluent for adjusting pH to neutral, entering a secondary bio-contact oxidation process to remove most COD and deepen the ammonia-nitrogen removing effect; lastly, making the effluent flow through a secondary sedimentation tank to discharge the effluent up to standard. The low-COD high-ammonia-nitrogen livestock wastewater treatment process has a short route and high efficiency, sewage can be treated up to standard under the condition that a C/N ratio is close to 1 to 1, the problem that the effluent wastewater is difficult to reach standard is solved, and the aim of recycling the effluent is fulfilled.