55results about How to "Offset loss" patented technology

The invention relates to a wireless-receiving system for detecting microelectronic mechanical microwave frequency and a preparation method thereof. The wireless-receiving system for detecting the microelectronic mechanical microwave frequency has quite simple structure, large measurement magnitude range, no direct-current power consumption and easy integration. In the system for detecting the microelectronic mechanical microwave frequency, gallium arsenide is used as a substrate, wherein a microwave antenna (A), a one-three power splitter (B), a coplanar waveguide transmission line (C), a two-in-one power combiner (D), an MEMS cantilever capacitive microwave power sensor (E) and an MEMS thermoelectric microwave power sensor (F) are designed on the substrate; and then a phase difference between a signal 3 and a signal 2 after the signal 3 passes through the coplanar waveguide transmission line with the length of lambda/2 can be determined according to a law of cosines. Because the phase difference corresponds to the frequency of the signal, the frequency of the signal can be measured.

The invention provides a negative electrode material, a negative electrode plate, a preparation method of the negative electrode plate and an all-solid-state lithium ion battery. The negative electrode material comprises coated lithium powder; silicon carbon powder; a conductive agent; and a solid electrolyte, wherein the coated lithium powder comprises lithium powder and a lithium-conducting coating layer coating at least one part of the outer surface of the lithium powder. In the negative electrode material, on one hand, the coated lithium powder is adopted, so that the activity of the coated lithium powder is greatly reduced compared with that of the lithium powder while the lithium can be effectively supplemented, no strict requirements for environment and equipment exist, the compatibility compared with the prior art is high, the production cost is lower, and meanwhile, the operation safety is greatly improved; and on the other hand, the solid electrolyte is added into the negative electrode material, so that the side reaction of the lithium powder and the solid electrolyte can be greatly reduced, the first coulombic efficiency can be effectively improved, and meanwhile, a lithium battery system has higher safety.

The balanced microwave power sensor with two thermopiles based on microelectromechanical technology is used in measuring microwave power by means of thermal balance. The microwave power sensor has the first coplane waveguide transmission line to receive the measured microwave signal, the first load resistor to absorb the signal power and convert it into heat and the first thermopile to receive the heat to generate potential difference; the second coplane waveguide transmission line, the first press welded block to output the potential difference, the second load resistor, the second thermopile, the second press welded block in the same structure and action with the first ones; and one power source. Through regulating the power source to make the second press welded block output the same voltage as the first one, the DC power consumed in the second load resistor will be equal to the microwave power, realizing the microwave power measurement.

The invention discloses a horizontal ejection-impact type blade bird cutting test device. The device comprises an air cannon, projectiles launched by the air cannon, a slideway, an impulse conversiondevice, a test blade and a test bird body, wherein the impulse conversion device serves as an impulse conversion medium, the impulse of the shots launched by the air cannon is transferred into the test blade, and the process that the test blade impacts the test bird body is used for simulating blade bird cutting. As the projectile does not directly impact the test blade and does not need to directly hit the test blade from a gun barrel, different types of bird impact blades are simulated by impacting the test bird body with the test blade, and convenience and accuracy of the bird impact resistance blade test method are improved. The invention further provides a test method using the test device.

The invention discloses a high-voltage power supply device of an electron beam melting furnace. According to the power supply disclosed by the invention, a current transformation way including power frequency alternating current input, voltage regulation by a three-phase adjustable reactor, boosting by a three-phase boosting transformer and high-voltage rectification and filtration is adopted for output; and output high-voltage sampled signals are taken as negative feedback signals, current of a direct current control winding of the three-phase adjustable reactor is controlled by a voltage regulator, and automatic voltage regulation is performed for keeping an output voltage value of the high-voltage power supply of the electron beam melting furnace stable. The power supply disclosed by the invention is based on the control of the controllable reactor and has the characteristics of high efficiency, small public nuisance and capability of fast and effectively suppressing discharge current during discharge of the high-voltage power supply.

The invention relates to a reconfigurable antenna and a manufacturing method therefor, and mainly aims to solve the problems of small tuning range, single re-configurability and high loss of the reconfigurable antenna in the prior art. A technical scheme is adopted as follows: the reconfigurable antenna comprises a source antenna layer, a metal ring structural layer and a metal cut corner structural layer arranged from the bottom up; the source antenna layer adopts a slit microstrip antenna structure, and comprises a floor with rectangular coupling slits and a dielectric plate with rectangularmetal radiation patches; the metal ring structural layer comprises rectangular metal ring units periodically arranged in the directions of X axis and Y axis; the metal cut corner structural layer comprises square metal cut corner units periodically arranged in the directions of X axis and Y axis; the metal ring structural layer performs clockwise rotation to form an included angle <theta>1 with the X axis; and the metal cut corner structural layer performs clockwise rotation to form an included angle <theta>2 with the X axis. By virtue of the method, the problems are well solved, and the reconfigurable antenna can be used for an intelligent communication system.

The invention discloses a sorting method of low-grade black and white tungsten fine clay. A buoyancy-gravity-buoyancy combined process is adopted, the complex fine clay mineral recycling and grade increasing requirement is satisfied, and the overall advantage of the process is given. The process has the advantages of simplicity, convenience in operation and management, strong suitability and no need of heating, the technical problem that the grade of the tungsten fine clay concentrate does not meet the smelting requirement all the time is solved, and the purpose of directly producing qualified-grade black and white tungsten fine clay concentrate by floatation at normal temperature is realized. Because the concentrate grade of the product meets the requirement for sale, the cost of flotation reagents and the loss of the amount of metal due to the decrease of the recovery rate are enough to offset by economic benefits obtained by the increase of the selling price, more importantly, the product marketing is expanded, so that the requirement of environmental protection of a smelting plant is met, and good social benefits are generated.

The invention belongs to the technical field of surfacing welding methods, in particular to an online surfacing welding repair method for a large grinding roller sleeve. Compared with the prior art, the invention provides continuous, long-time heating effects for the large grinding roller sleeve by the use of pre-heating air and cooling air and effectively solves the various problems in the existing online surfacing welding repair. The weld bead is closely connected with the outer surface of the large grinding roller sleeve to be repaired and does not fall off easily. In addition, the weld bead has no crack and is resistant to wear, which conforms to the repair requirements.

The invention discloses a processing technology of high-quality safflower decoction pieces. The invention relates to the technical field of safflower decoction piece preparation. The method comprisesthe following steps of: drying, moistening with a reinforcing liquid, freeze-drying, stir-frying with vinegar, wax-sealing and the like. According to the invention, the safflower dry product is moistened by the reinforcing liquid; the content of blood-activating effective components in the safflower semi-finished product is effectively improved; the loss in the processing process is partially counteracted, the content of effective components in the safflower decoction piece finished product is increased, the beewax is used for encapsulating the safflower decoction piece, thereby fixing the effective components and isolating the air, reducing the loss of the effective components of the safflower decoction piece in the storage process and improving the quality of the stored safflower decoction piece. T he step of stir-frying with vinegar can reduce the pH value of the safflower decoction piece aqueous solution, effectively improve the dissolution rate of carthamin yellow and improve thedrug effect.

The invention belongs to the technical field of surfacing welding methods, in particular to an online surfacing welding repair method for a large vertical mill grinding roller. Compared with the priorart, the invention provides continuous, long-time heating effects for the large vertical mill grinding roller by the use of pre-heating air and cooling air and effectively solves the various problemsin the existing online surfacing welding repair. The weld bead is closely connected with the outer surface of the large vertical mill grinding roller to be repaired and does not fall off easily. In addition, the weld bead has no crack and is resistant to wear, which conforms to the repair requirements.

The invention relates to a low-energy-consumption AC-DC universal motor, which includes a motor body, in which a plurality of sets of stator excitation coils are arranged, and at least one set of induction coils are added to the motor body, the induction coils are connected to a power supply through wires, and the induction coils induce the stator The magnetic field of the excitation coil generates current and charges the power supply to form a cycle of electrical energy. The motor body of the present invention adds a group of induction coils, and the magnetic field generated by the excitation coil forms a current in the induction coil, that is, generates electricity. This part of the current is charged into the power supply to form a circular conversion of electric energy, offsetting part of the loss of the motor, thereby To achieve the purpose of low energy consumption.

The luminaire has a plurality of reflecting lamellae (10) between side reflectors (1). The lamellae (10) each have an outer edge (11), an inner surface (12) facing away from said edge (11), and a plane of symmetry (S) through the outer edge (11) and the inner surface (12). The lamellae (10) have a resin body and a recess (13) in the inner surface (12), in the plane of symmetry (S). The recess (13) has a bottom surface (14) transverse to the plane of symmetry (S) and substantially parallel walls (15) along said plane. The recess (13) may widen stepwise from the bottom plane (14) towards the inner surface (12). The lamellae (10), as compared with metal lamellae, provide a greater freedom to choose their shape and are less expensive. They nevertheless avoid the occurrence of reflections on the side reflectors, which cause unpleasant bright spots within the cut-off angle of the luminaire. The lamellae grid (30) has strips (31) interconnecting, and integral with, the lamellae (10) and is suitable for use in the luminaire.

The invention provides a preparation method and device of passivated lithium microspheres and an application of the passivated lithium microspheres. The preparation method of the passivated lithium microspheres comprises the following steps: 1) carrying out dispersion treatment on molten-state metal lithium jet flow by utilizing a fluid vibration nozzle to obtain metal lithium liquid drops; 2) applying static electricity to the metal lithium liquid drops to obtain metal lithium microspheres; and 3) placing the metal lithium microspheres in a passivation solution, and stirring to obtain the passivated lithium microspheres. According to the preparation method of the invention, a microcapsule granulation technology is adopted, the superposition vibration principle and the specific passivation technology are utilized, and the passivated lithium microspheres which are small in size, adjustable in size, narrow in particle size distribution, adjustable in passivation layer composition and thickness and high in coating rate can be prepared.

The invention discloses a spraying method for a pack rolled sheet parting agent. The spraying method includes the steps that after a blank to be subjected to pack rolling is subjected to cogging to reach the size of 60 mm to 80 mm, the thickness of a lower blank which is milled after sizing is larger than that of an upper blank by 1 mm to 2 mm; then ring groove forming, plane milling and fillet expanding are conducted on the lower blank, and therefore a parting agent spraying groove is machined; after machining is completed, the mixed parting agent is sprayed into the parting agent spraying groove, and the whole spraying groove is filled with the thickness of the parting agent; then the lower blank obtained after the parting agent is sprayed is conveyed into a baking oven to be dried, thebaking temperature is 450 DEG C to 650 DEG C, and the baking time is 50 min to 75 min; and finally, after the parting agent is dried, the lower blank is taken out of the baking oven, the lower blank is cooled to be below 100 DEG C, and therefore the spraying work of the parting agent is completed. The spraying method has the beneficial effects that yield losses caused by head and tail arc deformation of steel sheets obtained after rolling are counteracted, the edge shearing amount is reduced, the yield and the qualification rate of the pack rolled sheets are increased, and the quality of the sheets obtained after pack rolling is effectively ensured.

A hydraulic system of a novel multifunctional orchard work vehicle comprises an oil tank, a quadruple gear pump, electromagnetic reversing valves, proportional flow valves, electromagnetic overflow valves, an adjusting one-way throttle valve, hydraulic oil cylinders and hydraulic motors. According to the hydraulic system of the novel multifunctional orchard work vehicle, on the basis of achieving traveling of a vehicle and lifting of an operating platform, overflow loss and throttle loss u are counteracted while throttle speed regulation is adopted, and work requirements can be well met; an electric-drive fan and a return oil filter are additionally arranged at an oil return opening, and the cooling effect is enhanced; and the hydraulic system is simple in overall structure, high in flow, sufficient in rotating and correcting power, good in cooling effect and convenient to use.

The invention discloses a field anti-plasma magnetic compression device and method, and belongs to the field of magnetic confinement nuclear fusion, and the device comprises a vacuum chamber, a compression coil surrounding the vacuum chamber, and a power module. A first power supply module in the power supply module generates a first compressed magnetic field in the vacuum chamber through a compression coil, and when the first compressed magnetic field rises to the maximum value, the second power supply module is connected and generates a second compressed magnetic field in the vacuum chamberthrough the compression coil, so that the magnetic field in the vacuum chamber continuously rises to perform cascade magnetic compression on the field anti-plasma in the vacuum chamber. After the plasma is rapidly heated to a high-temperature state, another power supply module is switched on to ensure that the current of the coil continuously rises, so that certain heating power is maintained to counteract transportation and radiation loss in the plasma, and the service life and fusion reaction time of the plasma are greatly prolonged, when coil current rises to the maximum value, coil magnetic energy can be fed back to a power grid or a power module, energy recovery is achieved, and compression efficiency is improved.

The invention relates to the technical field of display, and discloses a backlight driving circuit and a display device.The display device comprises the backlight driving circuit, the backlight driving circuit is provided with a control unit to compare working current of a backlight plate with set current, and when the working current is smaller than the set current, the ratio of the sampling voltage to the backlight driving voltage output by a power supply module is controlled to be reduced, so that the backlight driving voltage output by the power supply module can be improved through a feedback output loop of the power supply module, the driving capability to the backlight plate is improved, the working current of the backlight plate is improved to a set value, and the backlight brightness is adjusted to be consistent with an ideal set value; the display effect is improved.