197results about How to "Wide range of regulation" patented technology

The invention relates to an application of a porous carbon material with a grading pore structure in a lithium-air cell anode, and is characterized in that the carbon material has mutually communicated grading pore structure distribution which has a mesoporous structure for depositing the discharge products and a macroporous structure suitable for transmission of oxygen and an electrolyte. When the carbon material is taken as a material of the lithium-air cell anode, the space utilization rate of carbon material can be increased at maximum limitation during a charge and discharge process, specific discharge capacity, voltage platform and multiplying power discharge capability of the cell can be effectively increased, so that the energy density and power density of the lithium-air cell can be increased. The porous carbon material has the advantages that the preparation technology is simple, the material source is wide, the grading pore carbon material pore structure enables regulation and control, the regulation and control modes are various, and the doping of metal/metal oxide can be easily and simultaneously realized.

A two-inductor boost converter includes an integrated magnetic core having a three-legged flux-conducting element with an energy-storing gap, for example in the center leg. Two primary windings are disposed on respective legs, such as the outer legs, and are coupled in parallel to one input terminal of the converter. Two series-connected secondary windings are also disposed on the flux-conducting element, and are connected to rectification and filtering circuitry which may have full bridge, full wave, or voltage doubler configuration. Primary-side switches are coupled in series between each primary winding and the other converter input terminal. Control circuitry generates control signals for the primary-side switches, providing for a desired degree of overlapped conduction during each operating cycle along with periods of non-conduction that result in transferring electrical energy to the load. The integrated magnetic core can include additional windings for ancillary functions, such as for flyback operation during start-up.

The invention discloses a multi-element perovskite material, as well as preparation and application thereof. The multi-element perovskite material is multi-element fully-inorganic metal non-lead halide salt and has a perovskite structure; the chemical formula of the multi-element perovskite meets: (the formula is shown in the description), wherein x is greater than or equal to 0 and less than or equal to 1, y is greater than or equal to 0 and less than or equal to 1, A is Cs<+>, B1, B2, B3 and B4 are Na<+>, Ag<+>, In<3+> and Bi<3+> respectively, and X is a halogen element. Through improvement on the varieties and proportion of the key chemical elements of the perovskite material, being compared with the prior art, the multi-element perovskite material can effectively solve the problems that the conventional multi-element perovskite material has few varieties, and is difficult to regulate and control, and high in environmental pollution.

The invention discloses an air conditioning unit capable of regulating the temperature and the humidity. The input end of a compressor is communicated with the outflow end of a refrigerant storage tank. The output end of the compressor is communicated with an outdoor heat exchanger or an indoor heat exchanger. The air conditioning unit further comprises a humidifier, an electric heater, a fresh air inlet, a fresh air electric control valve, an outdoor temperature and humidity sensor, an indoor temperature and humidity sensor and a control unit. The control unit is electrically connected with the outdoor temperature and humidity sensor, the indoor temperature and humidity sensor, the electric heater, the fresh air electric control valve, a controller of the humidifier, a motor of the compressor, a motor of an outdoor fan and a motor of an indoor fan. No matter what the states of the indoor temperature and humidity and the outdoor temperature and humidity are, the indoor temperature can reach the set value range rapidly in the first place by preferentially regulating the indoor temperature through the air conditioning unit. Fresh air is introduced in the temperature and humidity regulating process, the energy consumption is reduced through outdoor effective influences, and the four functions including refrigerating, heating, dehumidifying and humidifying are achieved in the most economical and most energy-saving mode.

The invention relates to a nitrogen-doped porous carbon material used for anode of a lithium-air cell, which has a mutually communicated graded pore structure, N is uniformly doped in a C frame, wherein N accounts for 0.2-15% of carbon material, the graded pore comprises a mass transfer pore and a deposition pore, the pore volume of the deposition pore accounts for 40-95% of total pore volume, and the pore volume of the mass transfer pore accounts for 4-55% of total pore volume. The carbon material as the lithium-air cell material can greatly increase the space utilization rate of the carbon material during a charge and discharge process at maximum limit, so that lithium-air cell energy density and power density can be effectively increased. The nitrogen-doped porous carbon material used for anode of lithium-air cell has the advantages that the preparation technology is simple, the material source is wide, the pore structure of the graded aperture carbon material enables regulation and control, and the regulation and control modes are various, and the nitrogen doping mode is easy to realize.

The invention discloses a dynamic column vector light field generating device and method based on an optical heterodyne interference method. High-speed continuous rotation of the polarization direction of the linearly polarized Gaussian light is realized through an optical heterodyne interference method, and the linearly polarized Gaussian light with high-speed rotation of the polarization direction is further converted into dynamic column vector polarized light with high-speed conversion; the dynamic regulation and control speed of the column vector light field can be improved by 6 orders ofmagnitudes; the whole device is not provided with a mechanical motion assembly, and a generated dynamic column vector light field is stable and reliable; the generated high-speed dynamic column vectorlight field can be applied to the fields of optical communication, optical sensing, laser processing, optical capture, optical super-resolution and the like, and the time consumed for regulating andcontrolling the light field in application can be greatly saved; the device has the advantages of continuous polarization regulation, high stability, large regulation range and high response speed. Ahigh-speed switching dynamic column vector light field is generated; the change frequency of the column vector light field is changed by changing the frequency of a radio frequency signal for drivingthe acoustic optical modulator.

The invention discloses a logistics robot capable of achieving quick responding and balancing and an adjusting and control method of the logistics robot. The logistics robot can achieve quick responding, automatically control load balancing and achieve safe transporting. The logistics robot comprises a vehicle-mounted device, a data acquisition device, a central processing unit and an adjusting balance device. The data acquisition device, the central processing unit and the adjusting balance device are all mounted on the vehicle-mounted device. The vehicle-mounted device is responsible for bearing loads of the logistics robot and achieving the function of free moving. The data acquisition device is used for collecting load distribution condition data and robot motion state and posture datato be fed back to the central processing unit, the central processing unit is used for processing the data and outputting adjusting signals, and the balance device quickly responds to adjusting to stabilize loads. Meanwhile, the central processing unit judges the critical accelerated speed of cargoes in the instable state, the critical accelerated speed is taken as the accelerated speed limitingcondition to carry out accelerated speed constraining on a logistics car, the problem that loads of the logistics car are instable is solved, and it is ensured that cargoes carried by the logistics robot are safe.

The invention discloses a method for preparing a multilevel structure with a compound period through variable angle exposure and application, belongs to the technical field of laser processing, and particularly relates to preparation of a micrometer-nanometer cross-scale multilevel structure with a compound period through double-beam interference. The compound period and the multilevel micrometer-nanometer structure are obtained at the same time through the changing of exposure angles of double-beam interference, and a super-hydrophobic surface and a structural color for imitating insect wings are obtained through the micrometer-nanometer cross-scale multilevel structure and the compound period. According to the method, the multilevel structure is obtained through only double-beam interference processing technology by adopting variable angle exposure, the limitation that the prior art is required to be combined with a plurality of methods to prepare the multilevel structure is broken, and the method has the advantages of high expansibility, high yield, high efficiency and the like.

The invention relates to a method for regulating the ratio of Rashba and Dresselhaus spin-orbit coupling for a semiconductor quantum well material. According to the method, an undoped high-quality semiconductor quantum well material is selected, light whose energy is higher than that of the band gap of the semiconductor quantum well is used for irradiating a sample, and meanwhile, the temperature of the semiconductor quantum well is changed, so that the ratio of the Rashba and Dresselhaus spin-orbit coupling in the quantum well is regulated. By means of the method, the ratio of Rashba and Dresselhaus spin-orbit coupling is regulated through the effect that the number of photoproduced excitons in the semiconductor quantum well is changed along with the temperature as well as the control effect of ionized excitons on a built-in electric field, the method is simple and easy, and the regulating effect is significant.

A cycle carrier support bar has a cycle end grip device (4) at a first end of a tubular spacer bar (2) and a carrier end grip device (5) at the second end. The cycle end grip device can be a flexible strap (42) with a tensioning lever (43) and a key-operated lock (6). The carrier end grip device (5) can be a rigid clamp with opposed jaws (51,52) connected at a pivot (54) and closed releasably by a latch mechanism operated by a longitudinally-slidable carrier shuttle (55) carrying a detent of the latch. The latch is released to open the carrier end grip device (5) by pulling on the wire of a Bowden cable (8) which extends along the middle of the tubular spacer bar, and has an actuating lever (7) exposed through a window in the cycle end grip (4), so as to be accessible only when the cycle end grip (4) is open.

The invention discloses a preparation method of gold nanorods with different length-diameter ratios. The preparation method comprises the following specific steps that 1, a sodium borohydride reducing agent is added into a mixed solution composed of stearyl trimethyl ammoium bromide and chloroauric acid for reacting, and a gold nanoseed solution is prepared; 2, after a stearyl trimethyl ammoium bromide solution, a chloroauric acid solution and a silver nitrate solution are mixed, a glucose solution is added, the gold nanoseed solution obtained in the step 1 is poured into the mixed solution, and the gold nanorods with different length-diameter ratios are prepared by singly regulating and controlling the adding amount of silver nitrate; 3, centrifugal separation is conducted through a temperature difference centrifugation method, and gold nanorod sol is obtained. According to the preparation method, operation is easy, and the regulating and controlling range is wide; the obtained gold nanorods with different length-diameter ratios have the advantages of being good in dispersibility and uniform in particle size and can be widely applied to the fields of biosensing, surface-enhanced Raman scattering and the like.

The invention discloses a preparation method of metal/non-metal composite film of a vertical array structure. The method comprises the steps that the metal/non-metal composite structure film is prepared through a radio frequency magnetron sputtering codeposition technology; and large-scale regulation and control over the size and volume ratio of a metal array is achieved by strictly controlling non-metal target/metal target power ratio conditions in a technological process. The technological process is environmentally friendly, simple, and easy to implement; metal/non-metal vertical array structures of different forms, sizes and crystalline states can be obtained under the room temperature without needing the help of templates and without any special requirement for a base, the preparationmethod has good application potentials and prospects in the fields of optical devices, catalyzation, precision resistance film, memory and display devices and the like, and a new technological concept is provided for industrial application of the composite film of the vertical array structure.

The invention relates to an ion bombardment preparation method for a self-organizing nano-structure with a saw-toothed outline. The self-organizing nano-structure with the certainly ordered saw-toothed outline and a period of about 100 nanometers can be directly inductively generated on the surface of smooth fused quartz through the combination of argon ion beam bombardment and simultaneous impurity deposition, and thus the method is a simple and economical self-organizing nano-structure manufacturing technology that efficiently generates a quasi-blazed grating structure with the hundred-nanometer scale period. According to the method provided by the invention, the feature size of the acquired nano-structure can be controlled through adjusting the parameters (such as the bombardment time and the incident angle of the ion beam) of the ion beam when in ion bombardment. The invention provides a preferred range of ion beam parameter adjustment and a preferred principle of impurity target material. The method provided by the invention is also applicable to various solid materials such as a monocrystal silicon sample, and the ion beam can be one kind of inert gas ions from helium, neon,argon, krypton and xenon.

The invention relates to a polyetheretherketone hollow fiber preparation method and belongs to the technical field of organic fiber preparation. The problem that polyetheretherketone fibers prepared by a hollow fiber preparation method in the prior art is mainly to be solved. The polyetheretherketone hollow fiber preparation method includes subjecting special spinning-class polyetheretherketone to melt extrusion by a screw in an extruder, using a melt dosing pump for controlling the discharge amount, filtering melts through a filtering system of a component, and forming polyetheretherketone hollow fiber strips through a hollow spinneret plate; drafting the polyetheretherketone hollow fiber strips, cooling according to different cooling modes, and using a winding device for collecting as-spun fibers; guiding the as-spun fibers into a hot-drawing sizing device so as to obtain polyetheretherketone hollow fibers. The polyetheretherketone hollow fiber preparation method is simple, convenient and high in universality. The polyetheretherketone hollow fibers prepared by the preparation method have the advantages of high quality stability, high strength, high tenacity, high uniformity, excellent wear resistance and the like, and can be used for wear-resisting fabrics, thermal protection, lightweight materials and the like, thereby being quite promising in application prospect.

The controllable composite type reactor includes following parts: main iron core; AC main winding wound on the main iron core; control iron core; DC control winding wound on the control iron core. Characters are that control iron core is a hollow cylindrical iron core body, and framework type main iron core with opening is embedded on up and down planes of the cylindrical iron core body so as to constitute main skeleton of star shaped iron core; the control iron core includes control winding wound on inside and outside the cylindrical body; main winding is wound on core body of main iron core paralleled to cylindrical body of cylindrical control iron core in radial. Changing magnitude of current of the control winding, the reactor can change magnetic permeability of cylindrical iron core in axial direction. Thus, the reactor changes reactance value of AC reactor so as to reach purpose of adjusting reactor continuously and smoothly.