62results about How to "Reduce destabilizing effects" patented technology

The invention discloses a static yaw rotating method based on a laser-guided dual-wheel differential AGV. The method comprises that a laser scanner continuously obtains the real-time pose of the AGV, an intermediate reading and writing program transfers the real-time pose to a PLC execution program, and a host computer transmits the coordinate information of a target point to an onboard control system through wireless network communication. When the AGV is required to move to a next target point after accomplishing a task at a certain point, the AGV needs to reach an expected course to continuously advance by using the static yaw rotating method in combination with the AGV real-time pose and the target point coordinate information. The method innovatively formats a rotation direction problem, covers all rotation situations, and excludes unstable effects caused by special circumstances. Corresponding deceleration points are disposed to ensure the precision of the actual orientation of the AGV to reach the expected course. The method is applicable to general cases or cases where space is less limited, and is practical, concise, and feasible.

A folding axis / periscope telescope optical system transmission ratio measurement system includes: 1) light source component, including the light source and modulation wheel; 2) launching unit, including parallel tubes and changeable diaphragm; 3) receiving unit, including integral ball and photomultiplier tube for detecting incident light energy ; 4) control processing unit, including lock phase amplifier, analog-digital conversion circuit, SCM and display; its characteristic is that the launching unit and receiving unit are made to separate structure, and each separate structure can be independently lifted or pitching adjusted to meet the testing requirements of the folding axis telescope optical system transmission ratio; to improve the measurement precision, the system uses two optical paths method, to a certain extent, excluding the signal drift of the light source, detector, high-voltage power supply, amplifier and other components, and after a 100% calibration, it can process measurement in a long time.

The invention discloses a method for improving the stability of an infrared gas detection system based on a digital potentiometer, belonging to the field of gas detection. The method is implemented by a temperature control circuit, a current drive circuit, a DFB (Distributed Feed Back) laser device, a gas chamber, a photoelectric detector, a reference circuit, an amplification circuit, the digital potentiometer, a differential circuit, a filter circuit and a microprocessor. The method is characterized in that the digital potentiometer is taken as a gain resistor of the amplification circuit; and after the variation of a final wave form, acquired by the microprocessor, is processed, the magnification times of a transmission optical path electric signal is changed through feedback regulation on the resistance of the digital potentiometer, so that the aim of automatically compensating the fluctuation, caused by environment factors (except for gas absorption), of the optical power of transmission light, which passes through the gas chamber, is realized, and system measurement errors caused by the fluctuation are overcome. The system is simple in structure and easy to realize, has the characteristics of being high in long-term stability and insensitive to system environment change, and can be widely used in the field of free optical path and optical fiber gas detection.

The invention relates to a method for integrally and dynamically balancing a cantilever rotor with an impeller. By the design of a pneumatic driving device, a dynamic balance tool, a stator support and an air pressure control device, the dynamic balance tool is mounted by simulating a mounting mode of a rotor on an engine, a vibration value transmitted by a mounting supporting point of the rotor on the engine is really measured, a high-pressure air source is led in through the pneumatic driving device, and driving accuracy and stability are improved. The influence of uncertain factors such as belt transmission elasticity unstable tension and irregular change of dynamic balance magnitude caused by repeated disassemble and assembly of the rotor is eliminated, the whole unbalance magnitude of the rotor is directly used for assembly without decomposition after meeting design requirements, and use stability and reliability of products are improved.

The invention relates to a light beam generator and a digital holography device for hypervelocity holography. The light beam generator comprises a pulsed laser and a multi-mode fiber coupler, wherein the multi-mode fiber coupler comprises an odd number of output ends on the same plane, and the number of the output ends is the same as that of beam splitting laser pulses; the optical fiber length differences among all the output ends are determined on the basis of a preset relative time delay, and the positions of all the output ends on the plane are determined on the basis of a preset spatial orientation angular difference; and the arrangement of the output ends ensures that any two output ends do not form central symmetry. The digital holography device comprises the light beam generator and a subsequent optical system, wherein the subsequent optical system comprises a second lens and a photosensitive device. By implementing the invention, laser pulses having different spatial orientation angle codes and strictly controlled relative time delays can be conveniently obtained so as to form a plurality of hypervelocity holographic images, and the invention has simple and compact structure and high system stability and reliability.

The invention relates to a femtosecond broadband pumping-excitation / eclipse-detection spectrometer. The spectrometer generates pumping light, detection light and excitation / eclipse light, the spectrometer can perform double chopping modulation on the pumping light, and the excitation / eclipse light, and can control the time sequence of the excitation / eclipse light and the detection light reaching asample, wherein the detection light is ultra-continuous detection pulse forming a magic angle with the polarization direction of the pumping light. In addition, the polarization directions of the pumping light, and the excitation / eclipse light are consistent. The spectrometer can be used for detecting and acquiring the spectrum signals of the broadband detection light under each corresponding time sequence for further studying the ultra-fast dynamic behaviors of sample molecules in different excitation state processes. Compared with the existing relevant study methods, the spectrometer provided by the invention has the characteristics that the time resolution is high; the functions are strong; the processes capable of being studies are wider, and the like. The physical and chemical reaction artificial quantum regulation and control can be realized; the technology belongs to one of the novel and effective detection technologies in the modern ultra-fast spectrum technology.

The invention discloses a minim moisture detection system based on a scanning method, and belongs to the technical field of gas detection. The minim moisture detection system comprises a temperature control circuit, a current driving circuit, a distributed feedback (DFB) laser, a sawtooth wave generation circuit, an air chamber, a 1*2 coupler, a photodetector, a data acquisition card and a computer. The system is characterized in that: an output terminal of the DFB laser is connected with the 1*2 coupler through pigtail; two beam paths are connected with the rear of the 1*2 coupler, wherein one beam path is the photodetector, the other beam path is a beam path for cascade connection of the air chamber and the photodetector; the output terminals of the photodetectors in the two beam paths are respectively connected to the data acquisition card; the output terminal of the data acquisition card is connected with the computer; the sawtooth wave generation circuit is connected with the current driving circuit and is connected with the DFB laser; the temperature control circuit is connected to the DFB laser. The system has advantages of resist radiation, corrosion proof, anti-electromagnetic interference, on-line monitoring, small volume of required gas, simple operation, short response time and high accuracy.

The invention discloses a method for achieving high reliability of a stand-alone system based on a data dual-backup mechanism. The data dual-backup mechanism comprises real-time state backups based on a shared memory and condition backups based on a file system. The method for achieving high reliability of a stand-alone system based on the data dual-backup mechanism has following beneficial effects: backup and restoration of system states can be achieved at a quicker pace so that access to a file system is greatly reduced; and performance and stability of the system are improved so that system reliability is better achieved.

The invention discloses a cascading type fiber laser comprising an optical resonant cavity, a plurality of pump input fibers, pump output fibers, n*1 fiber combiners formed by coupling the pump input fibers and the pump output fibers and (1+1)*1 fiber combiners formed by coupling and connecting an active double-clad fiber and the side faces of the pump output fibers, wherein the optical resonant cavity is formed by sequentially connecting the active double-clad fiber, an optical isolator, an optical coupler and a narrow-band optical filter of the (1+1)*1 fiber combiners and has a ring structure, the optical coupler is divided into a small output end and a big output end, the small output end is fused and connected with the input end of the narrow-band optical filter, and the big output end is fused with the cascaded fiber combiner groups on the pump output fibers. A plurality of fiber combiner groups connected in series together can evenly and fully absorb pump light energy step by step and decrease the unstable influence caused by instantaneous overhigh pump light power or power drift in a high-power pump to the laser output power.

The invention discloses a high-temperature-resistant hydraulic rubber material. The mineral composition of the high-temperature-resistant hydraulic rubber material includes tricalcium silicate, dicalcium silicate, and amorphous silica powder, wherein the weight content of tricalcium silicate is 25%-50%, the weight content of dicalcium silicate is 25%-40%, amorphous silica powder is 25%-50%, and the calcium / silicon ratio is less than 2. The invention also discloses a mortar made of high-temperature-resistant hydraulic adhesive material, which is obtained by uniformly mixing the following raw materials in weight proportions, including: 350-650 parts of high-temperature-resistant hydraulic adhesive material, 200-500 parts of sand , active mineral admixture 50-200 parts, refractory filler 100-200 parts, dispersant 0.5-5 parts. The mortar thus formulated has excellent high temperature resistance and can be used for construction of building parts exposed to high temperature.

The invention relates to a hood welding unit, which includes a feeding module, a transporting module, a welding supporting module, a welding module and a gripper temporary storage module. The feedingmodule takes a working radius of a transfer robot of the transporting module as the radius and a fixing point of the transfer robot as an annular array with a circle center, and includes a first reinforcing rib storing mechanism, a second reinforcing rib storing mechanism, an upper cover storing mechanism, a third reinforcing rib storing mechanism, a first supporting frame storing mechanism, a left side plate storing mechanism and a right side plate storing mechanism; the gripper temporary storage module successively includes four sets of temporary storage brackets clockwise, wherein the firsttemporary storage bracket is provided with a reinforcing rib compression tool gripper, the second temporary storage bracket is provided with left and right side plate grippers, the third temporary storage bracket is provided with a hinge gripper and an upper cover gripper, and the fourth temporary storage bracket is provided with a rear side reinforcing rib compression tool gripper; and the welding supporting module includes a hood supporting bracket seaming tool, an upper hood reinforcing rib assembling welding tool and an upper hood combined assembling welding tool.

The invention relates to a reproducible manufacturing method for increasing the wavelength of a mass-produced MOCVD (Metal-Organic Chemical Vapor Deposition) gallium nitride LED. The method comprisesthe steps of: S1, providing a substrate, and growing a buffer layer on the substrate; S2, growing an undoped GaN layer and an N-GaN layer in order on the buffer layer from top to bottom; S3, growing amulti-quantum well structure layer on the N-GaN layer, wherein the multi-quantum well structure layer is composed of a plurality of sets of periodically stacked grown InGaN layers and GaN layers, inthe process of grown of the InGaN layers, the concentration of In is regulated to a saturated state, and the growth temperature is regulated to modulate the required wavelength of the gallium nitrideLED; S4, growing a P-type electron blocking layer on the multi-quantum well structure layer; S5, growing a P-GaN layer on the P-type electron blocking layer; and S6, growing a P+GaN layer on the P-GaNlayer. The reproducible manufacturing method can effectively reduce the instability and can improve the repeatability of the wavelength.

The invention discloses a maintenance method of special chemical nickel plating liquid for a nickel-phosphorus alloy on a surface of an inclined disc of a vehicle air conditioner compressor. A nickel-phosphorus alloy wear resisting layer is prepared on the surface of a ring shoulder of the inclined disc of the air conditioner compressor through the chemical nickel plating liquid, and has a self-lubricating function to improve the wear resistance and to prolong the service life of the compressor. The obtained nickel-phosphorus alloy is excellent in self-lubricating effect, improves the wear resistance of the inclined disc, and prolongs the service life of the compressor; and the maintenance method improves chemical nickel plating maintenance, is more convenient for feeding and maintenance of the plating liquid, and guarantees the plating stability.

The invention discloses a casting valve and a coating device with the same, and relates to the field of casting process firming. The casting valve comprises a base body and is characterized in that the base body is provided with a liquid storage tank and a casting tank which are adjacently arranged and separated by a partition plate, and a valve for controlling the liquid outlet of the casting tank to be opened and closed is also arranged on the base body; and a plurality of connecting holes communicating with the liquid storage tank and the casting tank are formed in the lower part of the partition plate in the horizontal direction, and the liquid inlet of the liquid storage tank is located at the upper part of the liquid storage tank. The casting valve and the coating device with the same has the advantages that the continuity is high, the firming efficiency is high, the coating uniformity is good, and the filming thickness is small.

The invention discloses kiln equipment and method for manufacturing flexible screen substrate glass. The kiln equipment comprises a glass melting furnace body and a material channel, wherein the glass melting furnace body is composed of a flat top part at the top, pool walls on the periphery and a kiln bottom at the bottom, the flat top part is provided with a waste gas discharge port and a feeding port, the feeding port is arranged far away from the waste gas discharge port, the waste gas discharge port is communicated with a waste gas channel, electric heating devices are arranged on the pool walls on the periphery, a material channel inlet is formed in the kiln bottom and is communicated with the material channel, the material channel comprises a bubble discharging and clarifying area, a stirring and homogenizing area and a cooling area, the bubble discharging and clarifying area is communicated with the inlet of the material channel, the outlet of the bubble discharging and clarifying area is communicated with the inlet of the stirring and homogenizing area, and the outlet of the stirring and homogenizing area is communicated with the cooling area. According to the kiln equipment disclosed by the invention, a corresponding special structure is designed in a targeted manner according to all physicochemical properties of flexible glass, flexible glass liquid meeting high quality and high requirements can be simply and efficiently prepared, and the problem of industrial popularization is solved.

The invention provides a digital display type drill rod and drill core tribometer. A drill core is fixed at the lower end of a pressurizing and holding device, the pressurizing and holding device is arranged on a support, and the upper end of the pressurizing and holding device is provided with a pressurizing cake. A simulation drill rod is connected with a shaft of a motor and rotates along with the shaft, the drill core is pressed on the simulation drill rod, and a guide rod for transmitting the friction force between the drill core and the rotating simulation drill rod is connected with a sensor after penetrating through the pressurizing cake. The digital display type drill rod and the drill core tribometer has convenient detection, small and exquisite structure and stable and accurate reading.

The invention provides a copper-containing antibacterial high-entropy alloy and a preparation method thereof. The general formula of the copper-containing antibacterial high-entropy alloy is FeCoxCryCuz, x is larger than or equal to 0.3 and smaller than or equal to 0.5, y is larger than or equal to 0.5 and smaller than or equal to 1.0, z is larger than or equal to 0.2 and smaller than or equal to 0.6, and x, y and z are molar ratios. The preparation method of the copper-containing antibacterial high-entropy alloy comprises the following steps that after Fe, Co, Cr and Cu are stacked according to the proportion, vacuum arc melting is adopted, and the copper-containing antibacterial high-entropy alloy is obtained. The copper-containing antibacterial high-entropy alloy has excellent antibacterial performance in an as-cast state, after the copper-containing antibacterial high-entropy alloy and escherichia coli / staphylococcus aureus (the bacterial concentration is about 105 CFU / mL) are co-cultured for 24 hours at the temperature of 37 DEG C, the antibacterial rate reaches up to 99.97%, the antibacterial efficiency is far better than that of traditional copper-containing 304 stainless steel, meanwhile, the copper-containing antibacterial high-entropy alloy has excellent strength and certain plasticity, and the copper-containing antibacterial high-entropy alloy can be widely applied to the field of stainless steel. The compression yield strength of an as-cast sample at room temperature exceeds 950 MPa, and the engineering strain (compression fracture strain) exceeds 30%.

The invention pertains to the energy field, in particular to an n-alkane cracking and fuel cell hybrid power system which comprises an alkane catalytic cracking system (A), a palladium membrane filter system (B) and a proton exchange membrane fuel cell power system (C). The invention cracks alkane to generate hydrogen and separates and purifies palladium membrane and the fuel cell is in power connection, thus preparing a set of hybrid system which applies alkane to generate power directly. The system of the invention has high integration degree, is easy to generate power for small and medium movable power stations and is also suitable for generating power for movable power supplies such as vehicles and submarines. The system of the invention reduces the unstable effect of feed gas on the fuel cell, decreases the cost, simplifies preparation technique and avoids poison deactivation of the fuel cell which can be caused by the cracking gas containing CO.

The invention discloses a tape casting membrane preparation production line, and relates to the field of membrane preparation equipment. The tape casting membrane preparation production line comprisesa machine frame, wherein a hard membrane preparation plate, a bearing platform, a coating mechanism, a pre-drying mechanism, a drying oven and a conveying system are arranged on the machine frame; the bearing platform is used for bearing the membrane preparation plate; the coating mechanism is used for coating the membrane preparation plate with a membrane preparation solution; the pre-drying mechanism is positioned above the bearing platform; the drying oven is positioned at the downstream part of the bearing platform; the conveying system is used for conveying the membrane preparation plateto the drying oven from the bearing platform and then cyclically conveying to the bearing platform; the coating mechanism is arranged above the bearing platform. The continuous membrane preparation on a hard plate is realized; compared with a traditional flexible conveying belt membrane preparation mode, the device can effectively provide stable, flat and continuous membrane preparation conditions for the coating mechanism; the conditions are provided for preparing thinner and more uniform diaphragms.

The invention relates to the technical field of photovoltaic power generation, and discloses a distributed solar power generation device and system based on Internet of Things control, rotating frames are rotated by a certain angle by turning over a motor so as to obtain an optimal illumination angle, and meanwhile, a certain fixing effect is achieved on a rotating shaft and the plurality of rotating frames, so that the rotating shaft and the plurality of rotating frames can be fixed. A plurality of driving air cylinders are controlled to operate at the same time, so that a plurality of driving telescopic rods drive telescopic blocks to move in opposite directions, and then a plurality of extension frames are driven by a plurality of connecting blocks to extend towards one side from the lower part of a corresponding rotating frame under the guide action of corresponding guide columns and T-shaped sliding grooves; therefore, the multiple solar sailboards and the extension sailboard are fully exposed under illumination, more radiation energy is obtained in unit time, the solar energy obtaining rate is improved, compared with the prior art that multiple sailboards are vertically distributed, the daylighting influence among the multiple sailboards can be avoided, the overall height of the device can be reduced, and the high-altitude risk is reduced.

The invention discloses improved high-wear-resistance self-lubricating chemical nickel plating liquid. Silicon dioxide and graphite are added in basic chemical nickel plating liquid for codeposition to obtain a nickel-phosphorus alloy wear resisting layer; the nickel-phosphorus alloy wear resisting layer has a self-lubricating function to improve the wear resistance and to prolong the service life of a compressor; and meanwhile, the stability of the plating liquid is improved through adjusting contents of other components, and the surface modification is performed for an additive to improve the codeposition dispersity and to increase the codeposition content so as to guarantee the chemical nickel stability and the plating layer quality.

The invention relates to a method of producing fatty acid ethyl esters comprising: a) reacting a substrate comprising triglycerides, diglycerides, monoglycerides, free fatty acids, or any combination thereof, with at least one immobilized lipolytenzyme, to provide a reaction mixture wherein the enzyme loading is below 30% w / w with respect to the substrate, and the molar ratio of ethanol to fatty acid (EtOH:FA) is at least 3.0 equivalents; b) separating the immobilized lipolytic enzyme from the resulting reaction mixture; and c) subjecting the immobilized lipolytic enzyme to at least one further reaction directly without modifications.

The invention discloses an annular oscillator, relating to the integrated circuit technology field. The invention solves the defect in the prior art the oscillation frequency is not stable. The annular oscillator disclosed by the invention is stable in the frequency and comprises a first time delay unit, a second time delay unit and a third time delay unit. The output terminal of the first time delay unit is connected to the input terminal of the second time-delay unit; the output terminal of the second time delay unit is connected to the input terminal of the third time delay unit. The output terminal of the third time delay unit is connected to the input terminal of the first time delay unit; the delaying time of the first time delay unit is in inverse proportion to power supply voltage of the annular oscillator; the delaying time of the second time delay unit is in direct proportion to the power supply voltage of the annular oscillator; and the delaying time of the third time delay unit is in inverse proportion to power supply voltage of the annular oscillator.

The invention discloses machine-made sand concrete and a preparation method thereof. The concrete is prepared from 120 to 200 parts of cement, 70 to 110 parts of coal ash, 750 to 1200 parts of gravels, 400 to 750 parts of machine-made sand, 150 to 220 parts of tap water and 5 to 8 parts of additives, wherein the machine-made sand comprises 150 to 200 parts of coarse sand and 200 to 550 parts of fine sand. The flowability (expansibility) is 550 + / -100 mm, the concrete is soft, easy to construct and pump, low in water-binder ratio and high in strength, and the adopted artificial machine-made gravel is environmentally friendly and capable of saving energy.

The invention relates to the technical field of radar detection, in particular to a method for radiation calibration of airborne hyperspectral imaging LiDAR system. The method comprises the following steps: S1. A monochromator in a spectrum calibration system emits optical signals of different spectrum values to scan the radar system, thus to obtain the bandwidth and central wavelength of each channel in the radar system; S2. According to the return signal power PR (λ, z) in the hyperspectral LiDAR equation and the optical power PRef (λ) received by the target surface of the detector in the radar system under experimental conditions, a white diffuse reflection board is taken as the ground object target, and a ranging channel is used to measure the flying height of the radar system, thus to obtain the parameters in the return signal power PR (λ, z) and the reflection spectrum βG (λ).