49results about How to "Control energy" patented technology

Link processing systems and methods use controlled two dimensional deflection of a beam along an optical axis trajectory to process links positioned along and transverse to the trajectory during a pass of the optical axis along the trajectory. Predictive position calculations allow link blowing accuracy during constant velocity and accelerating trajectories.

The invention provides a laser device and a laser radar. The laser device comprises a pump unit, a gain unit, a Q-switching unit, and a beam splitting unit disposed in sequence along an optical axis.The pump unit generates pump light. The gain unit includes a gain medium. The Q-switching unit includes a saturable absorber. The beam splitting unit generates exiting laser and a plurality of tuninglight of different wavelengths. The laser device also comprises a resonant reflecting surface and a scanning unit, the resonant reflecting surface is located between the gain unit and the pump unit, and the scanning unit selects one piece of tuning light from the plurality of tuning light and returns the selected tuning light according to an original optical path. The laser device is a tunable laser device capable of realizing Q-switching, higher peak power and larger pulse energy can be obtained, the cavity length of a resonant cavity and the volume of the resonant cavity can be effectively reduced, and the realization of the consideration of both high integration and high peak power is facilitated.

The invention relates to an application of femto-second laser in the surface treatment of the pure titanium implanting material, belonging to the technical field of application of laser in the material surface treatment. The application method comprises the following steps: in the air, the femto-laser impulse is in normal incidence and focused right on the top of the lump pure titanium implanting material which is ground and dried, a light spot with a radius of 5um is formed at the surface of the pure titanium implanting material, the femto-laser processing parameters are defined as follows: the impulse repeat frequency is 1 kHz, the single impulse power is from 5 to 200 micro joule, the impulse width is 50 femtosecond, the impulse center wavelength is 800 nanometer, the line interval of the laser processing is between 10 to 100 micron, the laser scanning speed is between 0.5 to 1.2 mm/sec, the laser polarization direction is regulated to be parallel to the laser scanning direction, the femto-laser scans the whole surface of the pure titanium implanting material, a titanium based biomedical material with an oxide layer generated on the titanium surface, even roughness, and a pattern of strips, holes, grooves or the combined pattern thereof formed on the pure titanium implanting material is made.

An improved system and method for ignition of a gaseous or dispersive fuel-oxidant mixture is provided where a gaseous or dispersive fuel-oxidant mixture is supplied to a detonator tube having a fill point and an open end and an igniter placed at an ignition point within the detonator tube is ignited while the gaseous or dispersive fuel-oxidant mixture is flowing through the detonator tube. A detonation impulse is produced at the ignition point that propagates to the open end of said detonator tube where it can be supplied to a detonation tube having an open end, to an internal combustion engine, a combustion chamber, and to a pulse detonation engine.

The invention discloses a high-molecular material 3D printing device applying nanosecond lasers to accurately control temperatures. The device includes two laser devices, a beam expander, a light beam scanning controller, a preheating chamber, a powder feeding device, a working platform, two temperature sensors and a control module. Through use of the device and in a laser sintering type printing technological process, energy emitted by the laser devices in unit time can be accurately controlled through controlling increase or decrease of the repetition frequency of pulses outputted by a pulse laser, so that a high-molecular material powder is allowed to maintain in a sufficient accuracy range in preheating and sintering processes, the temperature gradient of the interior of the material is uniformly distributed, defects of the interior of a molded workpiece are greatly reduced, moreover, the workpiece molding quality is better, and higher machining accuracy is maintained.

The invention discloses a double-mercury lamp spliced exposure system for lithography equipment. The double-mercury lamp spliced exposure system comprises a first light source and a second light source used for simultaneously or respectively providing illuminating beams; a first dodging component and a second dodging component which respectively correspond to the first light source and the second light source, a coupling lens group used for improving the illumination uniformity of the exposure system, and an illuminating and dodging component used for dodging emergent light of the coupling lens group to illuminate an illumination surface.

The invention discloses a welding technology for manual argon arc welding of a thick plate titanium material. The welding technology comprises the following steps: 1) cleaning welding wires, the surface of a groove and two sides of the groove; 2) adopting a double V-shaped groove, setting the angle of the lower section of the groove to be 55-70 degrees, and setting the angle of the upper section of the groove to be 30-35 degrees; 3) determining welding parameters, and welding. The application range of welding technology for manual argon arc welding of the titanium material is enabled to be further enlarged, and is particularly suitable for welding the titanium material of more than or equal to 20mm. The angle of the lower section of the groove is 55-70 degrees, so that a sufficient welding operation space is ensured, the defects of incomplete fusion, incomplete penetration and the like are prevented from being generated, and the welding quality is guaranteed; the angle of the upper section of the groove is 30-35 degrees, so that the metal filling volume is effectively reduced, and the difficulty requirements of improved groove processing technology is greatly reduced compared with U-shaped and double U-shaped grooves.

The invention discloses a method for preparing a titanium/diamond-like nanometer multilayer film on a silicon surface. The method concretely comprises the following steps of: drying a monocrystalline silicon substrate subjected to chemical cleaning in advance; putting the dried monocrystalline silicon substrate onto a rotating sample table of a cathode arcing device; performing vacuum pumping; introducing argon gas into a vacuum chamber; performing sputtering cleaning on the surface of the silicon substrate through an ion source; using high-purity metal titanium and graphite as targets, and using a direct current and pulse double-excitation-source cathode plasma discharge technology for respectively preparing a titanium nanometer function layer and a diamond-like film; and performing later-stage vacuum annealing treatment according to needs. The method has the advantages that the preparing process is simple; and the method can be used for preparing the diamond-like nanometer multilayer composite film with different surface structures. The titanium/diamond-like nanometer multilayer film prepared by the method provided by the invention has the advantages of high hardness, low stress and friction-reduction and abrasion-resistant performance.

The invention discloses a device and method for preparing amorphous carbon and nitrogen thin films on the surface of silicon. The device is a pulse cathode electric arc device assisted by an ion source. The preparation device includes the following steps that a silicon substrate which is chemically cleaned in advance is dried and placed on a rotating sample table; vacuumization is performed, argon gas is led into a vacuum chamber, and the surface of the silicon substrate is physically cleaned through an ion sputtering source; and high-purity graphite serves as a cathode target material of a pulse electric arc, the pulse discharging frequency is adjusted, nitrogen gas is led at the same time, the ion source is opened, and the atomization and ionization nitrogen-doped amorphous carbon and nitrogen thin films are prepared. By means of the device and method, the content of carbon/nitrogen atoms and carbon-nitrogen bonds/carbon-carbon bonds in the amorphous carbon and nitrogen thin films is adjustable, and the carbon and nitrogen bonding types and the graphite-like nitrogen/ pyridine-like nitrogen structures are controllable.

The invention discloses a meal replacement nutrition bar for weight reduction, which is prepared from the following food ingredients in parts by mass: 10 parts of soybean isolate protein powder, 15.7 parts of whole milk powder, 11.3 parts of whey protein powder, 24 parts of oat, 10.3 parts of buckwheat, 11 parts of nut meat, 2 parts of vegetable oil, 5 parts of xylitol, and 2 parts of fruit jam. The meal replacement nutrition bar is applied for replacing meal in medical weight reduction, replaces meal before meal and when hungry, is beneficial for enhancing satiety, reducing meal acceptable daily intake, increasing dietary fiber and various vitamins and minerals, and supplementing nutrients insufficient to intake during weight reduction, is suitable, health and safe meal replacement bar for weight reduction selected by individuals, hospitals and social institutions during weight management work, meanwhile, solves the problems of high sugar, high energy, excess food additives and the like in existing meal replacement food, and is safe without toxic or side effects since all ingredients are food and the food additives are less.

The invention relates to a method of preparing nano Si-based multi-hole luminescent material by atmospheric pressure plasma vapor deposition, which includes the following procedures: (1) a deposition substrate is arranged below a three-dimensional comb-shaped electrode, and a mechanical pump removes the air in a reaction chamber. (2) the mixed gas is fed through an umbrella washer of a gas inlet, to adjust the flow speed of the mixed gas and control the pressure in a deposition chamber to be near atmospheric pressure. (3)after the pressure in the reaction chamber becomes stable, the pulse bias is added to a basal, to adjust the frequency and power of a plasma generator. (4) after the discharge reaction, the substrate is taken out, and the nano Si-based multi-hole luminescent film is obtained. The method can be used in equipments which has dry environment, simple fitting, convenience in operation, and is near to atmospheric pressure, to change the plasma discharge parameters and pulse bias, and adjust the proportion and flow, etc of monomers and carrier gases, which can obtain high quality nano Si-based multi-hole luminescent films with different grain size, hole structures, components and film thicknesses, and provides adjustable luminescence radiation wave length and improved luminescence efficiency.

A method and apparatus for heating a substrate is provided herein. In one embodiment, a substrate heater includes a vessel having an upper member including a top surface for supporting a substrate thereon; a liquid disposed within and partially filling the vessel; and a heat source for providing sufficient heat to the liquid to boil the liquid. Optionally, a pressure controller for regulating the pressure within the vessel may be provided. The substrate is heated by first placing the substrate on the support surface of the vessel of the substrate heater. The liquid contained in the vessel is then boiled. As the liquid is boiling, a uniform film of heated condensation is deposited on a bottom side of the support surface. The heated condensation heats the support surface which in turn, heats the substrate.

The invention discloses a piezoelectric composite material helicopter blade structure and a control method thereof. A piezoelectric composite material is embedded into a composite material lamination structure of a rotor blade. An analysis model is established and is capable of accurately describing the motion rule of the rotor blade based on a structure model, an aerodynamic force model, a piezoelectric composite material model and the like, and further accurately calculates the dynamics characteristics of the rotor blade. According to the control method, a controller is employed for controlling the rotor blade, a Kalman observer is employed for obtaining rotor blade data under the condition of white noise interference, and the rotor blade data is taken as input variable for controlling, and further by using the controller to control the input voltage of the piezoelectric composite material, the purpose of controlling blade dynamics response and deformation is finally realized. The provided model establishing method and the control method have relatively high versatility and accuracy, help to accurately obtain dynamics characteristics of the helicopter rotor blade, and are high in control efficiency.

A high-frequency and high-voltage pulse generator for sterilization relates to a pulse generator. A control circuit and a pulse generating circuit are provided; the control circuit is provided with a voltage comparator, a triode, a first NAND gate, a second NAND gate, a coupler, and a relay; the pulse generating circuit is provided with a relay normally open switch, MOSFET switching tube, first transformer, second transformer, diode, capacitor, spark arrestor. Based on the traditional high-frequency pulse device, a timer based on NE555 is designed, and DSP is used to digitally process the sterilization signal, so that the interference of the sterilization circuit is greatly reduced. Capacitor charging and discharging is used to obtain high-voltage pulses, so that the output pulse can reach 12-100kV/cm, and the width is controlled at the microsecond level, and the pulse front is controlled at the nanosecond level, which can effectively sterilize and will not change the food composition. ; It can be turned on and off in an instant and has a large flow capacity and reliable operation.

The invention discloses a system and method for generating a high-intensity terahertz wave by double plasmas with an adjustable spacing. The system comprises a laser, an optical parametric amplifier,a chopper, a climbing device, a laser beam expander, a spatial light modulator, a mirror, a BBO crystal, a first off-axis parabolic mirror, a second off-axis parabolic mirror, a filter, and a siliconwafer which are set along the light path in order. By adjusting the spacing between phase diagrams of two pairs of Fresnel lens loaded on the spatial light modulator and the rotation angle of the symmetric axis, the system and method can control the spacing and spatial distribution between double plasmas, which not only improves the intensity of the terahertz wave, but also precisely controls theenergy and polarization state of the terahertz wave, fills in the vacancy in the technical field of high-intensity terahertz wave generation, and has strong scientific research and practical application value. The system has the advantages of simple structure, low construction cost, easy maintenance, high stability. The generated terahertz wave has stronger energy and wider spectrum, and can facilitate spectrum measurement.

The invention relates to a traditional Chinese medicine, specifically to a traditional Chinese medicine for treating diabetes and preventing and treating diabetic complications. The traditional Chinese medicine is characterized by being prepared from the following medicinal materials (by mass): 30-50 parts of Radix Rehmanniae Preparata, 20-30 parts of Chinese yam, 20-30 parts of cornus officinalis, 15-20 parts of astragalus membranaceus, 10-15 parts of honeysuckle, 10-15 parts of cape jasmine, 15-20 parts of red sage root, 10-15 parts of radix scrophulariae, 15-20 parts of schisandra chinensis, 15-20 parts of ligustrum lucidum, 20-30 parts of radix ophiopogonis, 10-15 parts of reed rhizome and 10-15 parts of radix trichosanthis. The traditional Chinese medicine has effects of tonifying kidney and spleen, clearing heat and moistening lung, nourishing yin and increasing fluids, promoting blood circulation to remove blood stasis, conditioning five internal organs, recovering dysregulatedviscera function and improving reduced viscera function to fundamentally treat diabetes, and is suitable for treatment of diabetes and complications thereof. The traditional Chinese medicine is convenient and simple to take and has good effects. After a patient takes the medicine, blood sugar and urine sugar are effectively controlled, and energy, physical strength and other functions are recovered satisfactorily. The diabetes is effectively prevented and controlled through the comprehensive effects of various traditional Chinese medicines, and the medicine also can calm the liver, clear heat,harmonize blood, tonify qi, clear heat, moisten the lung, nourish yin, increase fluids and reinforce the kidney.

The invention provides coarse aggregate void test equipment comprising a stand part, a base part and a controller. In the stand part, a stand is provided with a magnet, a motor and a speed reducer, and is further provided with a hammer lifting chain, a guide rail and a drop hammer guide rod; a slide block is sleeved on the guide rail, one side of the slide block is connected with the hammer lifting chain and the other side fixes a force transmission rod; a hammer lifting tongue board is fixed above the slide block and controls a drop hammer to move upwards to the set height along the drop hammer guide rod; the drop hammer can make free fall, and the lower end of the drop hammer is provided with a detachable hammer head; in the base part, the stand is fixed on the base, a graduator is fixed in the base, a servomotor on the graduator extends out of the top of the base and corresponds to the position of the force transmission rod, the base is provided with a rolling disc controlled by the graduator, and the rolling disc is provided with a fixed base and a test bucket; the drop hammer guide rod and the drop hammer can swing around a vertical shaft of the guide rail till corresponding to the center of the test bucket under the control of the magnet; and the controller is used for controlling the starting and the stopping of a counter, the switching on and off of a motor and the swinging of the drop hammer.

The invention relates to a device for testing gas/dust combustion and explosion performances with a super-capacitor. The device comprises a control end and a testing end, wherein the control end comprises a switch power supply (1), the super-capacitor (3), a unit control switch (4), a main power control switch (5) and a master controller used PLC control system (2) that are connected with one another in series; the testing end comprises an explosive combustion reaction observation tube (8), an electric heating wire (6), a powder/gas jet dispersion device (10), an infrared thermometer (9) and arelease top cover (7); the electric heating wire (6), the powder/gas jet dispersion device (10) and the infrared thermometer (9) are arranged in the observation tube; the release top cover (7) coversthe top of the explosive combustion reaction observation tube (8); the electric heating wire (6) is connected with the control end. Compared with the prior art, the device has the advantages of beingreliable in safety, variable in combination of equipment and easy to disassemble and having the performances of gas observation and dust combustion and explosion; therefore, the device is suitable for various simulations, tests and demonstrations of gas and dust combustion and explosion performances.

A method and apparatus for heating a substrate is provided herein. In one embodiment, a substrate heater includes a vessel having an upper member including a top surface for supporting a substrate thereon; a liquid disposed within and partially filling the vessel; and a heat source for providing sufficient heat to the liquid to boil the liquid. Optionally, a pressure controller for regulating the pressure within the vessel may be provided. The substrate is heated by first placing the substrate on the support surface of the vessel of the substrate heater. The liquid contained in the vessel is then boiled. As the liquid is boiling, a uniform film of heated condensation is deposited on a bottom side of the support surface. The heated condensation heats the support surface which in turn, heats the substrate.

The invention provides an energy enhancement optimization method for a marking edge of laser equipment. The method includes the steps that firstly, a marking work area S is selected, and with the center of the marking work area as a base point O, an energy setting initial value E1 of the center base point O of the work area is acquired; secondly, calculating and actual measuring are performed according to a material of a target object needing marking, and an equation coefficient is selected; thirdly, calculating is performed through a compensating equation F(x) and the selected equation coefficient, and an energy value E2 needing compensation is obtained after calculating; and fourthly, the closer the energy value E2, needing compensation, obtained after calculating is to the center O of the work area, the less the energy value E2 for compensation should be, and the closer to the edge of the marking work area S, the larger the energy value E2 for compensation should be. According to the energy enhancement optimization method for the marking edge of the laser equipment, directing at the marking feature of a marking machine, that is, the energy for the edge of the marking work area is less than the energy for the center point of the marking area, compensation is performed on the edge energy of the marking work region by using energy compensation, and the marking effect is better.

The invention discloses a welding method for a thick-wall alloy pipeline of a needle coke device. The alloy pipeline is made of a 1Cr5Mo material. The welding method comprises the following steps of material selection, groove preparation and joint pairing, preheating before welding, multi-layer and multi-pass welding and heat treatment. According to the welding method, through proper material selection, preparation of a welding groove and multi-layer and multi-pass welding, welding heat input can be reduced, and welding line energy is controlled; in addition, through heat treatment of a rear-layer welding pass on a front layer, grains can be refined, and the comprehensive performance of a welding joint is improved; and during heat treatment after welding, preheating treatment is conducted firstly, austenite is completely converted into martensite, then tempering heat treatment is conducted, the hardness of all areas of the joint can be reduced, the toughness, the deformation capacity and the high-temperature endurance strength of the joint are improved, the internal stress of the joint is eliminated, and welding cracks are greatly reduced.