86results about How to "Elimination speed" patented technology

The present invention is limit load regulating method and apparatus for hydraulic bull dozer. The present invention features that by means of connecting the throttle valve sensor, the engine rotation speed sensor, walking motor rotation speed sensor and motor proportion valve to the micro controller (MC), connecting the engine to variable displacement oil pump and MC, the calculation in MC of the difference between practical rotation speed and the set value of the engine and the motor based on the signals from the sensors, the data processing and PID operation, the limit load regulating apparatus regulates the current of the electric proportion valve in the variable displacement oil pump and the current of the electric proportion valve in the motor to maintain the rotation speed of the engine in the constant value. The present invention makes the hydraulic bull dozer operate in optimal rotation speed with less fluctuation in high response speed.

A variable speed limit sign including a controller and a display operatively coupled to the controller is provided. A traffic control system including a variable speed limit sign and methods of use thereof are also provided.

The invention is applicable to the field of permanent magnet synchronous motor flux-weakening control, and provides a flux-weakening control method and a flux-weakening control device. The flux-weakening control method comprises the steps of acquiring DC bus voltage and reference voltage of a d-axis; generating voltage which can be distributed to a q-axis according to the acquired DC bus voltage and the reference voltage of the d-axis; subtracting the voltage which can be distributed to the q-axis by preset q-axis voltage margin so as to generate flux-weakening initial threshold voltage; subtracting preset q-axis reference voltage by the flux-weakening initial threshold voltage so as to generate voltage difference; and integrating the voltage difference so as to generate reference current of the d-axis. According to the invention, current jitter, speed fluctuation and other unstable phenomena during switching between normal control and flux-weakening control are fundamentally eliminated under the condition that a permanent magnet synchronous motor is in normal operation, the fast dynamic nature has extremely high resistance for fluctuation in bus voltage, and the stability of the permanent magnet synchronous motor can be improved.

A secure system and method for aircraft emergency landing are provided. The system includes a movable board, a detecting device, a controlling system and a buffering device. The detecting device detects the landing location and speed, and transmits the information to the controlling system, which moves the board and makes the moving speed and position of the board match with those of landing aircraft according to the detected information. The aircraft will land on the movable board. The buffering device includes plural independent gas capsules full of antiflaming gas provided on the top surface of the movable board. The gas capsules counteract the aircraft's inertia and absorb the impact force quickly. Plural gas capsules are provided independently from each other. Thus, even though the gas capsules hit aircraft first are broken, remain gas capsules still can perform the function of buffering.

A slotted aerofoil configuration is provided in which the leading element thereof is contoured to provide mild stall characteristics. A wing based partially or fully on such an aerofoil, an air vehicle including such wings, and a method for designing an aerofoil are also disclosed

The invention relates to the field of unmanned aerial vehicles and provides an unmanned aerial vehicle resistant to interference in hovering and a control method. The unmanned aerial vehicle resistant to interference in hovering comprises a body and a master control unit in the body, auxiliary propellers and a wing gliding device are arranged around the body, the auxiliary propellers are controlled by the master control unit, and rotation planes of the auxiliary propellers are perpendicular to the horizontal plane and adjustable in direction. The wing gliding device is mounted on a driving device, the driving device operates to drive the wing gliding device to be in an expanding or folding state, and a sensing device is further mounted on the body. By addition of the auxiliary device to the unmanned aerial vehicle, strenuous vibration of the unmanned aerial vehicle in hovering is avoided, so that the unmanned aerial vehicle can be in a stable state. Therefore, the problem that the unmanned aerial vehicle is prone to vibration under influences of external environments is solved, and reliability of the unmanned aerial vehicle in hovering is improved.

Disclosed herein is a movement-adaptive noise reduction apparatus, including a memory, a mixing control section, a movement component extraction section, a low-pass filter section, and a movement decision control section. In the apparatus, the movement decision control section and the low-pass filter section receive, from the outside, information regarding the gain value upon an amplification process to which the image signal is subjected before inputted to the mixing control section to control at least one of the threshold value and the filter characteristic in response to the information.

The invention discloses a self-correcting fully-distributed optical fiber Raman scattering sensor. In the invention, a duplex fiber cable is utilized as a sensing optical fiber, pump light is divided into a forward beam and a backward beam during the transmission process by welding the tail ends of the duplex fiber cable together so as to obtain two anti-Stokes Raman scattering light beams, and the intensity of the anti-Stokes Raman scattering light beams is measured so as to realize temperature measurement; and the intensity values of the two anti-Stokes Raman scattering light beams can be multiplied so as to achieve the purpose of self-correction of curvature, loss, strain and the like. The sensor disclosed by the invention comprises an optical fiber pulse laser, an optical fiber wavelength division multiplexer (WDM), the duplex fiber cable, a photoelectric receiving module, a digital signal processor (DSP) and a computer. The invention has the advantages that self-correction and temperature measurement can be carried out at the same time only by measuring the intensity of the anti-Stokes Raman scattering spectrums; and the system has a simple structure, and avoids the defects that the traditional measuring system has transmission loss and errors caused by different center wavelength and needs a plurality of photoelectric receivers.

The present invention relates to one kind of slurry paper for no-mercury Zn-Mn cell with polymer electrolyte. The slurry paper includes base paper and slurry, and the slurry consists of one kind of polymer gel prepared with coordination ion liquid and organic mercury-replacing buffer liquid. The coordination ion liquid is prepared with urea, thiourea, zinc chloride and ammonium chloride; and the polymer gel is prepared with coordination ion liquid, PVA, PAM, PEG and crosslinking starch in certain proportion. The no-mercury Zn-Mn cell with polymer electrolyte can decrease the internal resistance of cell, improve dynamic discharge performance of cell, prolong the maintenance time and avoid environmental pollution caused by mercury.

The invention relates to a powder concentrator integrating the functions of scattering, drying and grading into a whole, which mainly comprises a drying area casing, a scattering area casing, a raw material splitting tube, a splitting device, a volute body, a grading rotor, a main shaft and a main bearing bracket. The powder concentrator is characterized in that the drying area casing is in a V-shaped structure, one side of the drying area casing is joined with the volute body, the upper part of the other side of the drying area casing is connected with the scattering area casing which is slantways arranged, and the upper part of the scattering area casing is connected with the raw material splitting tube in which the splitting device is arranged. An eccentric position in the volute body is vertically provided with the grading rotor which is in a conical structure, and a cantilever of the main shaft of the grading rotor is supported on a bearing pedestal on the main bearing bracket. The invention has the advantages of good material adaptability, strong drying and scattering capabilities, high powder concentration efficiency, low pressure loss of a system, small maintenance quantity of equipment, compact and reasonable structure, large adaptability to materials and the like.

The invention discloses a preparation method of a SnS2/SnO2 lithium ion battery anode material in hollow-sphere structure. The method includes: 1) adding SnCl4.5H2O in a mixed liquid of deionized water and anhydrous ethanol to fully dissolve the component for forming a solution A, and dissolving NaOH in the solution A to prepare a solution B; 2) under stirring, adding urea to the solution B and continuously stirring the solution to prepare a uniform mixed solution C, and performing a homogeneous hydrothermal reaction on the mixed solution C; 3) after the reaction is finished, washing and drying a product to obtain a SnO2 precursor; 4) heating the SnO2 precursor to burning to prepare SnO2 powder; 5) dispersing the SnO2 powder in ethanol with stirring to prepare a uniform mixed suspension D;6) adding SnCl4.5H2O and TAA to the suspension D with stirring until the components are completely dissolved to obtain a homogenous suspension E; 7) performing a microwave thermal reaction on the suspension E, when the reaction is finished, moving-out and washing and drying the product to prepare the SnS2/SnO2 lithium ion battery anode material in hollow-sphere structure.

A method for producing a sealed cavity, including: a) producing a sacrificial layer on a substrate; b) producing a cover layer covering at least the sacrificial layer and a portion of the face of the substrate not covered by the sacrificial layer, the cover layer including lateral flanks forming, with the substrate, an angle of less than 90°; c) producing a hole through one of the lateral flanks of the cover layer such that a maximum distance between the substrate and an edge of the hole is less than approximately 3 μm, the hole crossing a portion of the cover layer deposited on a portion of the substrate not covered by the sacrificial layer; d) eliminating the sacrificial layer through the hole, forming the cavity; and e) depositing at least one material plugging the hole in a sealed fashion.

An apparatus and methods for high-speed non-linear spectrally encoded multi-photon imaging that are particularly suited for use in two photon fluorescence and fluorescence lifetime imaging. The system is capable of optical image compression and scale invariant digital zoom. A wavelength agile laser with digitally synthesized electro-optic modulation in a master oscillator-power amplifier configuration is combined with spectral encoding to eliminate the speed limitations of inertial scanning. The technique for fast two photon fluorescent imaging with simultaneous lifetime imaging independently detects the location, amplitude and lifetime of fluorescent emission by synthesizing a sequential excitation beam via digital electro-optic modulation of a quasi-CW swept source followed by time encoded detection. For fluorescent imaging, spectral and temporal mappings are employed separately, with quasi-CW spectral encoding used for pumping and time encoding for constructing the image at fluorescence wavelength.

The invention provides a ground automatic passing slip phase system for an electrified railway based on a solid transfer switch. The ground automatic passing slip phase system comprises a solid transfer switch, an over-voltage suppression device, a solid transfer switch loop protecting switch and a locomotive position detection device, wherein the locomotive position detection device is arranged on a steel rail; the over-voltage suppression device is arranged between neutral region contact nets and the steel rail; the solid transfer switch and the solid transfer switch loop protecting switch are communicated with neutral regions of contact nets and the contact nets on two adjacent sides; electric split phase neutral regions in the contact nets are kept electrified constantly by powering on the solid transfer switch, so that an electronic locomotive constantly carries phases A and B of voltage when passing through the contact nets. The ground automatic passing slip phase system has the beneficial effects that by transferring the solid switch, the electronic neutral regions of the contact nets constantly carry voltage of 27.5kV in the system, multi-influence of electric split phase to speeds, carrying capacities and the like of a high speed train and a heavy load electronic locomotive is eliminated, furthermore a series of problems caused by electric split phase can be solved, the carrying capacities of locomotives can be increased greatly, and the working intensity of drivers can be relieved.

The invention provides a water-based resistance reducing agent and a preparation method thereof, and solves the problems in the prior art that an inverse emulsion resistance reducing agent is long indemulsification hydration time; and an oil phase in the emulsion has the technical problem of damage to the oil phase of the stratum rock core. The preparation method comprises the following raw materials in parts by weight: 20 to 60 parts of a water-soluble thickening agent; 20 to 70 parts of a solvent; 0.2 to 5 parts of a suspension auxiliary agent; and 0.5 to 3 parts of a suspending agent. Thewater-based resistance reducing agent not only has the advantages of environmental protection and low harm, but also can realize integrated operation and online blending.

The present invention discloses an intra-pulse double-frequency velocity dealiasing and distance fuzzy method and system. The system comprises an emission system and a receiving system, and also comprises a dual-way digital waveform generation module, a digital intermediate frequency reception module and a Doppler signal processing module. The dual-way digital waveform generation module generates two emission excitation signals with different frequencies, outputs the emission excitation signals to an emission system and emits the emission excitation signals to a space through an antenna, echo signals received by the antenna are processed through the receiving system to obtain intermediate frequency signals, the digital intermediate frequency reception module receives the intermediate frequency signals, echo signals with two frequencies which are respectively received and processed to zero intermediate frequency by two corresponding digital filters are generated according to the corresponding emission frequency difference, and the processed signals are output to the Doppler signal processing module, and the Doppler signal processing module performs corresponding ambiguity resolution processing so as to realize velocity dealiasing and distance fuzzy.

The invention relates to a laundry treatment machine, more especially a washing machine or a laundry dryer, comprising a drivable drum which accommodates laundry and is rotatably mounted in a container integral with the housing, wherein the container is provided with an elastic sleeve, covering the transition from the front opening of the container to the housing opening, around the filler opening of the drum, and wherein a laundry rejector is attached in this transitional region in the region of the top dead center of the drum. For improvement purposes, a specially configured laundry rejector is provided in the region of the top dead center of the drum in conjunction with a receiving means in the sleeve in order to avoid laundry items from becoming damaged.

A vehicle powertrain including a planetary transmission including an output, a first member connected an a first power source and a second member connected to a second power source, a brake for alternately releasing the output and holding the output against rotation, a motor including a second output driveably connected to vehicle wheels, and a clutch for opening and closing a drive connection between the output and the vehicle wheels.

A dual-rudder control mechanism suitable for use in the sailboats (1), comprising an extendable pivot (8) having each end a respective rudder, mechanism (20) for extending the pivot (8) length, and a control mechanism being responsive to tilting angle of the sailboat (1), and activating or deactivating the mechanism (20) for extending the pivot length in response to the threshold tilting angle of the sailboat body.

The invention relates to a method for washing cooling or air conditioning circuits, according to which a washing agent is conducted through said cooling or air conditioning circuit. Said agent dissolves and absorbs the soluble substances that adhere to the cooling or air conditioning circuits and discharges the mechanical contaminants. The washing agent is conducted through the cooling or air conditioning circuit that is washed in a closed cycle without escaping into the environment, by the pressure differential between the pressure chamber and the distillation chamber and is returned to the pressure chamber after being cleaned in the distillation chamber, compressed by a compressor and cooled in a condenser. The invention also relates to a device for washing cooling or air conditioning circuits, said device consisting of a pressure chamber containing a washing agent. The outlet pipe for fluid of the pressure chamber is connected to the cooling or air conditioning circuit that is washed. A compressor and a condenser, which is connected to a supply line for fluid to the pressure chamber, are connected upstream of said chamber. A distillation chamber is connected between the cooling or air conditioning circuit that is washed and the compressor and inert gas that is compressed by the washing agent is contained in the pressure chamber.