64 results about "Electro mechanics" patented technology

The invention discloses a high-conductivity polymer carbon nanotube composite material and a micro-processing method thereof. The invention is characterized in that the method comprises the following steps: adding 50-99.95 parts of polymer grain or powder, 0.05-20 parts of carbon nanotube, 0-15 parts of antioxidant and 0-15 parts of dispersant into a micro-extruder, a double-screw extruder or a double-screw extruder/micro-extruder combined facility, extruding at a screw rotation speed of 20-500rpm at a polymer melting or softening temperature of Tm+10 DEG C-Tm+80 DEG C for 1-3 times to obtainuniformly dispersed composite material grains, and carrying out micro extrusion, micro injection or micro compaction on the grains to prepare a high-conductivity micro product; or carrying out isothermal or non-isothermal heat treatment on the product in a baking oven with a temperature of Tm-80 DEG C-Tm+20 DEG C for 5 seconds to 1.5 hours; or carrying out after-treatment on the sample in microwaves, infrared rays or plasma. The high-conductivity polymer carbon nanotube composite material disclosed by the invention is used for preparing micro biomedical devices in minimally invasive operations, and used in the field of micro biomedical sensors, micro electronics, micro electro-mechanics or micro-robots.

Every printing system has characteristic defects which detract from high quality printing. Xerographic printing systems show defects such as banding, mottled colors in large fill areas, trail-edge deletion and starvation where toner concentrations drop at certain color edges, misregistration, and so on. Ink jet printing systems can show ink bleeding, streaking in the direction of head movement, and so on. One approach to reducing printer defects is to refine the electro-mechanics for more precise printing. Another approach which works for predictable defects is to modify the digital data being sent to the printer to pre-compensate for the defect. The prior art does this to a limited extent for individual object types (strokes, fills, images, text, etc.) and for misregistered color edges (trapping). This invention extends the range of edge-related defects that can be both predicted and pre-compensated for. An embodiment of the invention is described which pre-compensates for defects such as trail-edge deletion, starvation, misregistration, halo, etc. by identifying runs of color which meet the criteria likely to cause the effect and applying a function f(edge-distance, object-type) to such runs to modify them appropriately. Both the prediction criteria and the functions applied are anamorphic (the scan direction and process direction are treated differently) and object-optimized (object attributes are taken into account). Further, both prediction criteria and applied correction functions allow user-settable input.

A system and method for converting kinetic energy into useable thermal energy by means of a gas compression based cogeneration. Kinetic forces applied, that are coupled to kinetic components of electro-mechanic thrusters 3, 49-input side, and upper small area pistons 7, 53-receiving side transmitted by shafts 4 and 50 get multiplied through Pascal hydraulic oil links 16 and 17, that are between the lower side small area pistons 12, 58 and lower side large area pistons 21, 60. At least two compression chambers are used to compress gas therein repeatedly to increase the pressure and temperature of the same. Auxiliary compressors 41, 73 help to increase temperature of compressed gas further. Said heat generated is conducted into a single liquid sodium thermal storage volume 36 that facilitates a highly stable thermal storage volume and contains working gas spiral sections 35, 39 circulating within. Steam 113 generated within spiral sections 35, 39 generates power in turbines 99, 106 and then heat residential and/or commercial buildings 115. Service hot-water is provided utilizing a water tank 85 and refrigerant coil circulation oil volume 92, both utilize thermal storage volume 36 waste heat by conduction for a triple integrated system. The system may also be combined with other power generation systems. In second embodiment 121 with more than two units of compression chambers and higher capacity, low cost electric power generated enables efficient hydrogen mass production. A thermo-physical cogeneration system with central heating means, and a cogeneration power plant 121 with hydrogen mass production and hydrogen storage capabilities; are presented as what are new in the art.

The invention provides an array micro audio directional transducer, belonging to the technical field of ultrasound, in particular to the technical field of transducer. The transducer comprises the following working steps: a plurality of micro transducer units are arranged on a support frame evenly or unevenly for transmitting ultrasound modulated by audible signals; the ultrasound is self modulation in air to generate audible sound with high directivity. The transducer unit consists of four parts, namely, a top electrode, a bottom electrode, radiating materials and a base. The surface of the support frame is coated with plus-minus electrodes to connect with all plus-minus electrodes of the transducer units. The number of the array micro audio directional transducer units can be changed according to the requirements of directivity, sound pressure level and other parameters. The transducer features high conversation efficiency in electro mechanics, strong directivity, good stability, changeable array structure and the like.

The invention discloses a metal-oxide gas sensor based on MEMS (Micro-Electro-Mechanic System) and a preparation technology thereof. The gas sensor is characterized by comprising an Si substrate, an insulating layer, two thin-film resistor heating elements, a rectangular micro array, a pair of sensitive electrodes and a metallic oxide three-dimensional multi-level nano-structure produced on the rectangular micro array, wherein partial Si at the lower part of the Si base is removed in an anisotropic manner through wet etching; at the front of the gas sensor, the heating elements and the sensitive electrodes are arranged in a central symmetry and spiral manner, the rectangular micro array is arranged in the center, and the heating elements, the sensitive electrodes and the rectangular micro array are positioned on the same layer; the heating elements can also serve as temperature detecting elements. According to the invention, the nano-structure synthetized by adopting a hydrothermal method can realize the bridge type electrical connection through the mutually crossed dendritic structures, and is finally connected with the sensitive electrodes; the arrangement manner of the rectangular micro array is changed, and nano-materials of different types are replaced, so that the metal-oxide nano gas sensor based on different measuring circuits and sensitive materials of different types can be processed.

A photonic modulator is provided that includes a transducer element that receives a RF input signal and converts the RF input signal into an elastic wave. One or more optical waveguides receive the elastic wave that has propagated a specified distance through an acoustic delay line. The one or more optical waveguides perform optomechanical transduction on the elastic wave in the presence of an optical wave, which produces one or more scattered optical waves. An optical circuit sums the one or more scattered waves to produce an optical signal output.

A variable pitch fan, particularly for propulsion, of the type comprising a rotor and at least two stages of stator blade rows positioned upstream and downstream of the rotor, wherein the rotor blades (8) are of the variable pitch type and have a sinusoidal shape, are of the twisted type (1) or of the constant deflection type (2) and the stator blades (25), positioned downstream of the rotor, are of the twisted type. This rotor blade design allows a reduction of both the torque necessary to activate the variable pitch systems (lither actuator system) and the turning moments due to the centrifugal force. The proposed fan can be set in rotation by a conic couple of gears, contained in a gear oil sump positioned downstream the rotor, by means of one power shaft contained inside the stator blade.

The variable pitch fan further provides a stator row upstream the rotor which are twisted in a manner that allows increased efficiency. The stator row downstream the rotor has a movable twisted part actuated by way of a simple electro mechanic system.

This invention even further provides a light screw female system, actuated by an electric motor, to rotate the variable pitch rotor blades.

A microphone includes two backplates. A membrane is located between the two backplates. A voltage source applies a first bias voltage to the membrane and the first backplate and applies a second bias voltage to the membrane and the second backplate. A control unit adjusts the first and the second bias voltage. A method to center the membrane in a final electro-mechanic equilibrium position between the two backplates in a microphone is also disclosed.

Disclosed a visual positioning device of moving component belongs to the automatic detecting device in the productive process of electro-mechanic product, which can reduce the design complexity of system and improve the operational efficiency of device. The invention mounts a pick-up head, a electron camera, a semi-transparent mirror and a lighting source on the pick-up device workbench. Wherein, the semi-transparent mirror is mounted between the electron camera and the pick-up head; the electron camera is mounted in a certain inclined angle to make the pick-up head picks up the bottom picture of element to be reflected by semi-transparent mirror to imaged clearly in the electron camera; the projected position of pick-up head on the workbench can be imaged clearly via the semi-transparent mirror. The invention realizes the detection, the displacement adjustment of pick-up element, and the same operation on the mounting position can be synchronously operated with the transfer and mounting detected by one visual system in the transferring process of mounting elements; and the pick-up and the assembling operations on the pick-up device are not need additive process to make the mounting-positioning process more simply and fast.

The invention provides a micro integrated non-cooperative target detection device, and belongs to the technical field of micro electro mechanics. The device is characterized by comprising a laser emission part, an optical scanning part and a signal receiving and processing part, which are integrated in a 100mm*35mm*50mm module box; the continuous wave laser beam undergoing signal modulation passes through a diaphragm and a beam splitter and then is irradiated on an MEMS micro reflection mirror serving as the optical scanning part, the continuous wave laser beam undergoes two-dimensional scanning, and the beam reflected back by a non-cooperative target is reflected by the MEMS micro reflection mirror and the beam splitter respectively and then processed by the signal receiving and processing part so as to output the information about the relative distance and orientation of the non-cooperative target. The micro-integration non-cooperative target detection device of the invention is more compact in structure and much smaller in volume.

The invention relates to an intelligent sighting correction system module for guns and a correction method of the module. The module comprises a laser range finder, a wind speed and wind direction sensor, an infrared sighting unit, a Micro-Electro-Mechanic System (MEMS) micro mirror, a power supply, a central processing unit and a sighting telescope. The module is characterized in that the module is an assembly part, an intelligent module is snapped on the upper portion of a gun, the sighting telescope is mounted at the top of a casing, and the infrared sighting unit, the laser range finder and a wind speed and wind direction sensor probe are arranged on the two sides of the casing. The MEMS micro mirror is integrated in the infrared sighting unit, a circuit chip of the laser range finder, a circuit chip of the wind speed and wind direction sensor, a circuit chip of the MEMS micro mirror, the central processing unit and a circuit chip of the infrared sighting unit are packaged on a substrate of the intelligent module. A built-in power supply supplies power for the intelligent sighting correction system module. The intelligent sighting correction system module has the advantages that the MEMS micro mirror is integrated in the infrared sighting unit, the intelligent module has range finding, wind finding and shooting trajectory correction functions, and the shooting accuracy is improved effectively.

The invention relates to the field of electronic functional material, in particular to a bismuth calcium titanate-based luminous piezoelectric ceramic material and a preparation method thereof. The chemical components of the bismuth calcium titanate-based luminous piezoelectric ceramic material accord with a chemical general formula CaxBi4-yRyTi3+xO12+3x, wherein x is more than or equal to 1 and less than or equal to 2, y is more than or equal to 0.0001 and less than or equal to 0.5, and R is selected from one or more of Pr, Gd, Er, Dy, Tm, Ho, Eu, Yb and Tb. The ceramic material has ferroelectric, piezoelectric and dielectric properties and photoluminescence property at the same time, and belongs to a novel multifunctional material. The bismuth calcium titanate-based luminous piezoelectric ceramic material has excellent photoelectric property, and has wide application prospect in the fields of photoelectric integration, micro electro-mechanics, photoelectric sensing, LED technology and the like.

The invention relates to an in-situ instrument for micromechanics performances of materials under three-point and four-point bending action, belonging to the technical field of micromechanics performance test of materials. The in-situ instrument belongs to an electro-mechanics integrated precise test instrument for micromechanics performances of materials. A direct-current servo motor is connected with a worm wheel and a worm; after slowing-down torque increasing is realized, a lead screw is driven by virtue of a secondary worm and gear transmission mechanism; after combination of the support of a foundation bed, a precise slide block is driven by the lead screw to move a bent head; and by combining the co-action of supporting units of a test sample, three-point bending and four-point bending experiments are realized. The in-situ test instrument for the micromechanics performances of the materials under three-point and four-point bending action has the advantages of a small size, a compact structure, light weight, good dynamic characteristic and low energy consumption. A sensor is directly arranged on the instrument foundation bed, so that the test precision is sufficiently guaranteed; meanwhile, the spacing between the bent heads at the two sides can be regulated, a three-point bending pressure head and a four-point bending pressure head are convenient to dismount, simple to exchange, and vertical structural arrangement is adopted, so that the condition that the instrument can be compatible with an objective table structure of commercial material property characterization instrument equipment is facilitated.

The invention relates to a piezoelectric biaxial micro gyroscope with a rocking mass block in the technical field of micro electro-mechanics. The micro gyroscope comprises a rocking mass block harmonic oscillator, a base plate for supporting the rocking mass block, four driving electrodes which are parallel to the edges of the base plate and are arranged at intervals, and four detection electrodes parallel to the edges of the base plate. Angular speeds in two directions in the base plate surface are detected by using the special vibration mode of the rocking mass block harmonic oscillator, adopting drive of the inverse piezoelectric effect and detecting the voltage change on the piezoelectric electrodes, and the input angular speeds in the two directions in the base plate surface are acquired through a peripheral mediation processing circuit. By adopting the fine machining technology of a micro-electromechanical system (MEMS), the micro gyroscope is simple in structure, and can realize biaxial direction; and the machining technology is easy to implement and high in reliability.

A method for quickly measuring the DC resistance of electric power transformer by use of excited oscillation features that when the transformer is charged for said measurement, the electromagnetic energy induced in the winding not to be measured is used for fast charge or discharge to make the charge current of the winding to be measured quickly reach a stable value in impact oscillation mode for realizing fast and correct measurement of its DC resistance.

The invention discloses a method for reducing stickiness in a manufacturing process of a micro-electro-mechanic-system microphone. The micro-electro-mechanic-system microphone includes a silicon substrate with an acoustic rear cavity, an oxide film on the silicon substrate, a first polycrystalline silicon layer on the oxide film, a silicon dioxide layer on the first polycrystalline silicon layer, and a second polycrystalline silicon layer which is on the silicon dioxide layer and provided with sound holes. The method includes the following steps: removing the silicon dioxide layer so as to form an acoustic front cavity; cleaning the micro-electro-mechanic-system microphone; immersing the micro-electro-mechanic-system microphone in a low-surface-tension liquid; and drying the micro-electro-mechanic-system microphone so as to enable the low-surface-tension liquid in the acoustic front cavity to volatilize and at the same time, and using sound wave vibration to enable a vibrating diaphragm of the micro-electro-mechanic-system microphone to vibrate so as to reduce generation of stickiness. During drying of the micro-electro-mechanic-system microphone, sound wave vibration is used so enable the vibrating diaphragm of the micro-electro-mechanic-system microphone to vibrate so that a probability that a stickiness phenomenon happens is reduced and the yield of the micro-electro-mechanic-system microphone is improved.

The invention provides an aluminum nitride nanometer comb and a preparation method thereof, belonging to the technical field of a nanometer material and preparation thereof. The aluminum nitride nanometer comb is a nanometer comb with a bilateral comb-shaped structure formed by a nanometer wire array, or a mixed structure of the bilateral comb-shaped structure and a monolateral comb-shaped structure, wherein the nanometer wire is formed by AlN with a hexagonal wurtzite crystal structure, with diameter of about between 50 and 80 nanometers and length of about between 1 and 1.5mu meters. The preparation method adopts a direct-current electrical arc discharge device, and leads metal aluminum to react with a mixed gas of nitrogen and ammonia under a condition of high-temperature and low pressure system so as to prepare a white nanometer comb sample. The method synthesizes the AlN nanometer comb structure with high purity and even arrangement for the first time; the preparation method has the advantages of simpleness, good repeatability, short time, low cost and friendly to environment; and the comb and the method have application prospect in laser interference/coupling, nanometer laser array, nanometer electro-mechanics and other fields.

The invention belongs to the technical field of motor analysis design, and discloses a method for analyzing magnetic potential of a non-sine power supply multiphase motor. The method includes the steps that the concepts of equivalent positive sequence currents and equivalent inverted sequence currents are imported, a synthetic forward circular rotating field and a synthetic inverted circular rotating field are seen as being generated by the equivalent positive sequence currents and the equivalent inverted sequence currents respectively, subharmonic currents are indicated as current phasors in an index mode, on the basis of magnetic potential equivalence, harmonic equivalent sequence currents corresponding to the subharmonic magnetic potential are acquired, and then corresponding space harmonic forward magnetic potential and inverted magnetic potential are directly solved. The method is based on the electro mechanics fundamental principles, the concept is clear, complex calculation of superposing the subharmonic magnetic potential of all phases in a traditional method is avoided, the method is suitable for analyzing the magnetic potentials of the multiphase motor under multiple working conditions, and when default phases or asymmetrical windings or asymmetrical currents or other failures occur, only corresponding elements in a current matrix or a winding spatial position matrix need to be changed.

The invention discloses a high-speed vehicle brake test device and a control method thereof, and belongs to the technical field of electro-mechanics. The test device is characterized by mainly comprising a road attachment coefficient simulating device, a mechanical automobile inertia simulating device, a data acquisition and processing part and an experiment device control part. By virtue of the device, the movement inertias of different types of vehicles can be simulated; meanwhile, the brake situations of the vehicles in case of different road attachment coefficients can be simulated, and the brake moment and the slip rate of a vehicle provided with an anti-lock brake system during braking are accurately measured. The performance of the anti-lock brake system of a passenger car can be more accurately evaluated.

The invention relates to a kind of automobile electrical-mechanical mixed driving system . It includes engine , starter motor , driving motor , battery , an inverter that provides alternating current to the starter motor and the driving motor , a controlling device that can judge the needed speed gear of the car and calculate the driving torsion or speed needing amount of the car , meanwhile give the corresponding speed gear and the power supply frequency of the electrical machinery or controlling signal of phase place , according to the rotational speed signal of the engine and the driving motor and the driving signal . Among them , the starter motor and the driving motor can adopts multi-speed multi-phase alternating current reaction electrical machinery , or the starter motor adopts single-speed multi-phase alternating current electrical machinery and the driving motor adopts multi-speed multi-phase alternating current electrical reaction machinery , or the starter motor adopts multi-speed multi-phase alternating current electrical reaction machinery and the driving motor adopts single-speed multi-phase alternating current electrical machinery . The characteristic of the invention is that it saves the mechanical gearbox , using an inverter supply alternating current for two electrical machineries , reduce fabrication cost o the system , and improves the motor utilization ratio of energy .

An actuator arrangement for a brake, particularly an electric parking brake or an electro-mechanic operating brake with a brake pad-adjustment unit that can be driven by an actuator arrangement. The actuator arrangement comprises: an electric motor, a transmission unit located in a housing, which is coupled to the electric motor and is effectively connected at the output side with the brake pad, adjustment unit, means for fastening the actuator arrangement at the caliper or at the brake pad, adjustment unit, a plug accept for a connection plug of an electric connection unit, which is electrically connected to the electric motor, the electric motor is encompassed at least partially by an encasement, at which the plug accept is formed in one piece, and/or the fastening means are embodied as a separate exchange part, with fastening openings, and fixed at the actuator arrangement in a torque-proof fashion.

A grating assembly (GAi) for use in phase contrast imaging applications in an X-ray imager (IM). The assembly (GAi) includes an electrostrictive layer coupled to the grating structure (Gi) of the assembly (GAi). Via said coupling, ridges (RG) of the gratings structure can be deformed into alignment with the focal spot (FS) of the X-ray source (XR) of the imager (IM). This allows reducing X-radiation shadowing effects.