475results about How to "Stability impact" patented technology

The invention discloses a four-state quantum encoder and decoder for phase modulation polarization encoding and a quantum key distribution system. The encoder and the decoder have intrinsic stability, namely, the working stability is not influenced by the external environment or connecting optical fibers which can be common mono-mode optical fibers. The quantum encoder and decoder can be applied to the field of quantum key distribution, the whole system comprises a transmitting end and a receiving end, and the transmitting end and the receiving end are connected through a quantum channel to complete the key distribution process. The quantum encoder and decoder can achieve BB84 protocol four-state quantum key encoding and decoding with intrinsic stability. The common mono-mode optical fibers can be used as all the connecting optical fibers without using polarization-maintaining optical fibers, and interference with the phase drift and polarization change of the system from the external environment has no influence on the encoding or decoding process at all.

The invention discloses a smart unmanned passenger vehicle. An automatic driving system used for unmanned driving is arranged on a vehicle chassis; a plurality of human body seats are arranged on a vehicle body; the unmanned automatic driving system comprises a driving module, a path navigation module, an obstacle avoidance module, a communication module and a data processing module, and further comprises a sensor module, a smart identification system, a monitoring and detecting system, a supervisory control system, an air conditioning system and a main control processor; the sensor module isused for collecting and detecting temperature and humidity information, passenger information, fuel quantity information, electric quantity information, vehicle tire pressure information, engine temperature and pipeline patency information, fire hazard information, smell information and composition information of dangerous goods in a carriage of the unmanned passenger vehicle, and uploading the information to the main control processor and a cloud computing system; and the unmanned automatic driving system further comprises a battery power management module. According to the invention, the unmanned driving of passenger cars is realized through an unmanned driving technology, the real unmanned transportation is realized, and an overall business operation model is constructed on the basis ofthe unmanned passenger vehicle.

The invention relates to a rapid stable joint control method for attitude maneuver of spacecraft and belongs to the field of spacecraft attitude control and vibration control. The method is invented by absorbing advantages in spacecraft attitude maneuver trajectory planing technology and input shaping technology, and allows spacecraft to maneuver in task-required time and keep attitude quickly stable within index required values after maneuvering. Torque outputting capacity of a spacecraft attitude control actuator and maximum angular velocity maneuverability of spacecraft are further considered comprehensively, so that output torque of the spacecraft attitude control actuator is easy to implement.

A method for controlling dynamic response of switch power is based on a closed-loop control system including a sampling module, a dynamic control module, an error calculating module, a PID module, a mode control module and a PWM module, wherein the sampling module samples output voltage Vo, and the dynamic control module compares the Vo with set Vo max, Vo min and V ref. Whether a dynamic mode is employed is determined. When the output voltage Vo changes greatly under the dynamic mode, the voltage Vo is rapidly restored to a stable voltage by inputting large power or small power, and the load is detected by voltage change gradient to determine the working state and reduce voltage resonance. The dynamic response effect is improved.

The invention provides precision measurement device and method for an optical material refractive index. By adopting the device and the method, combination of a wide spectrum analysis method and a Fabry-Perot interference method can be achieved, accurate optical material thickness and refractive index are obtained by global residual analysis, and spectral analysis is carried out through a wide spectrum method Fabry-Perot interference system, so as to obtain a refractive index dispersion curve of the optical material under a continuous wave band. By adopting the device and the method, the measurement accuracy of the refractive index is improved, a stable interference cavity is formed by using parallel plate structures of most of optical materials, effects on the stability of an interference signal caused by air agitation are reduced, the optimal material is prevented from being processed into a special shape, and nondestructive measurement of the optical material is achieved.

The invention relates to a self-adaptive prediction function control method for a nonlinear production process, which mainly solves the problems that the non-linear process is difficult to control and model and is complicate to calculate on line in the prior art. In the invention, an on-line self-adaptive algorithm is set by using on-lined acquired production data, constructing control input with two degrees of freedom and using an aggregation concept in economics without pre-building a predication model of an object to be controlled and comprises the following steps of: (1) building control input with two degrees of freedom: selecting control input of a future system, formed by weighting two primary functions; (2) building an expected performance index of the future system; (3) deducting future prediction output; (4) self-adaptively optimizing system parameters on line; and (5) stably analyzing a control system and then stably analyzing a novel control method according to the aggregation concept, a zooming theory and a prediction control theory, thereby obtaining a technical scheme for a parameter adjusting method of the control system and better solving the problems. The invention can be used for nonlinear industrial devices for oil refining, chemical industry, pharmacy, machinery, aviation and the like.

The invention relates to a single-component moisture-curing polyurethane adhesive for a car roof and a preparation method thereof. The obtained adhesive has the advantages of low application temperature, rapid curing speed and convenience in application. By introducing an ethylene oxide chain link in the adhesive molecular structure, the probability of reaction of the NCO groups with water in the later stage is increased, and then by combination with a composite catalyst, the latter curing speed is greatly improved; by adding No. 6 solvent oil, the anti-freezing performance of the adhesive is improved, and the storage is also more stable; and by adding a certain amount of a water removal agent, the effect of water in raw materials and the environment on the stability of the adhesive is eliminated.

The invention discloses a broadband and low-noise radio frequency amplifier of a satellite navigation aviation enhancing system and a broadband and low-noise radio frequency signal transmission device of the satellite navigation aviation enhancing system, which applies the amplifier. The amplifier comprises a first-grade amplification circuit, a second-grade amplification circuit, a first inter-grade matching circuit, a band-pass filter, a second inter-grade matching circuit and a third-grade amplification circuit, which are cascaded. The transmission device is composed of the radio frequency signal amplifier, a light emission module, an optical fiber and a light receiving module. According to the broadband and low-noise radio frequency amplifier and the broadband and low-noise radio frequency signal transmission device, the low-noise receiving of all frequency bands of 1.1GHz-1.7GHz navigation aviation is realized, and the advantages of wide frequency band, low noises, high linearity, high time delaying stability, good flatness and the like are realized; the problem of arrangement distances of a plurality of reference receivers of the satellite navigation aviation enhancing system is solved, an antenna mounting and site selection range is enlarged and conditions are provided for the intensive mounting of the reference receivers.

The invention provides a variable-speed constant-frequency wind power generation device having an energy storing device. An output shaft of a wind turbine with a fixed propeller pitch is connected to an input shaft of a permanent magnet generator; the permanent magnet generator is coaxially connected to a regulating motor; an armature winding of the permanent magnet generator is connected to a power grid through a primary synchronization switch; the armature winding of the regulating motor is connected to an alternating current end of an engine aside converter; a direct current end of the engine aside converter is connected to the direct current end of a net aside converter; the energy storing device is connected to the direct current end of the engine aside converter through a charge-discharge device; an alternating end of the net aside converter is connected to a low-voltage end of a transformer; and a high-voltage end of the transformer is connected to the power grid through a secondary synchronization switch. The invention applies the energy storing device in the permanent magnet wind power generation device, therefore realizing the stable variable-speed constant-frequency running as well as flexibly changing the active power and the reactive power output by a power generation device based on the self-regulation capability when the maximum wind power is transformed so as to ensure the power balance of the power grid.

The invention discloses a semiconductor overlaying low-temperature energy storage refrigeration device and a working method thereof. The semiconductor overlaying low-temperature energy storage refrigeration device comprises a compressor, a hot end energy storage heat exchanger, a liquid storage device, a throttle valve and a cold end energy storage heat exchanger, all of which communicate in sequence according to the refrigerating medium flow path. The cold end energy storage heat exchanger comprises at least one set of box type or shell-coiled pipe type cold end evaporator, and the hot end energy storage heat exchanger comprises at least one set of box type or shell-coiled pipe type hot end condenser. A semiconductor chilling plate is attached to at least one heat radiation plane of each of the cold end evaporators and the hot end condensers. Cold and hot end medium cavities for containing energy storage media are formed in the outer portions of the other faces of the semiconductor chilling plates. Cold and hot end medium temperature probes are arranged in the medium cavities correspondingly. Temperature probes and pressure probes are arranged between an outlet of the cold end energy storage heat exchanger and the compressor. According to the semiconductor overlaying low-temperature energy storage refrigeration device and the working method, the system internal stability and heat exchange efficiency are improved, and the energy consumption ratio is correspondingly reduced. By means of the energy storage media, the refrigerating fluid operation condition can be relatively stable, the energy storage device is flexible in configuration, and combination can be carried out according to the system size.

The back surface protective film for solar cell of the present invention is provided with a first resin layer obtained using a first thermoplastic resin composition which is prepared by melt-kneading a starting composition containing a first thermoplastic resin and a silane coupling agent. The back surface protective film may be provided with other resin layer bonding to the first resin layer. The thickness thereof is preferably in the range from 10 to 1,000 μm. The solar cell module of the present invention is provided with the back surface protective film for solar cell.

The invention relates to a water-borne epoxy composite-containing emulsified asphalt cold-recycling agent and a preparation method thereof. The cold-recycling agent is prepared from the following components in parts by mass: 100 parts of emulsified asphalt and 10-20 parts of water-borne epoxy composite, wherein the water-borne epoxy composite comprises a component A and a component B, the component A is prepared from the following ingredients in parts by mass: 100 parts of water-borne epoxy emulsion, 10-25 parts of waterborne blocked polyurethane, 0.5-2 parts of associated thickener and 0.5-2 parts of coupler, and the component B is prepared from the following ingredients in parts by mass: 100 parts of an amine water-borne epoxy curing agent and 10-20 parts of accelerant. Compared with the prior art, the water-borne epoxy composite-containing emulsified asphalt cold-recycling agent belongs to a homogeneous system, has an excellent low-temperature flexibility, high-temperature stability, excellent water stability, good abrasion resistance and high early strength while the strength is improved, and the mixed material has excellent pavement performances and can be directly applied to the surface layer of pavement.

The invention discloses an optimal designing method for the rigidity and construction time of a weak rheological surrounding rock tunnel secondary lining structure, and belongs to the technical fieldof civil engineering. According to the method, the rigidity and construction time of the weak rheological surrounding rock tunnel secondary lining structure are optimally designed by combining three-dimensional viscoelastic/viscoelastic-plastic numerical simulation computing with a convergence-constraint characteristic curve method. The method has the important practical engineering value except the theoretical significance and has very considerable economic benefits and a very significant effect on the main aspects of decreasing the earthwork excavation volume, reducing concrete and steel material consumption, shortening the construction period and the like.

The invention provides a method for manufacturing a top-gate thin film transistor and the top-gate thin film transistor. In the manufacturing method of the top-gate thin film transistor of the present invention, while depositing and forming the intermediate layer, doping it with fluorine element, and then using the gate and the gate insulating layer as shields, performing high-temperature annealing treatment on the active layer, and Under the action of the intermediate layer, after the high-temperature annealing treatment, the metal oxide semiconductor material in the region of the active layer that is not covered by the gate and the gate insulating layer and is in contact with the intermediate layer is covered with fluorine ions. Compared with the traditional production method, this method does not need to add new process steps, and the surface damage to the metal oxide semiconductor material in the source and drain contact areas is relatively light, and at the same time, it can effectively reduce the source and drain contact area. The resistance of the region, and the resistance of the source and drain contact regions after high-temperature annealing is stable, and will not affect the stability of the device.

The invention belongs to the technical field of formula foods for special medical purposes, and particularly relates to a stable medical liquid enteral nutrition composition and a preparation method thereof. Every 1L of the enteral nutrition composition has a formula as follows: 1 L of the enteral nutrition composition is prepared by 36.25 g to 83.05 g protein, 23.7 to fat 56.2g of fat, 103.5 g to245.7 g of carbohydrate, 0 g to 41.5 g of dietary fiber, 0.36 g to 0.87 g of vitamin premix, 1.86 g to 4.58 g of mineral premix I, 14.24 g to 31.49 g of mineral premix II, 0.72 g to 4.19 g of an emulsifying agent, and 0.68 g to 2.75 g of a stabilizing agent, and the water is taken as a solvent. By optimizing the preparation process flow, the loss of vitamins is reduced, so that the product has good stability. The method is simple in process, easy to operate, easy for continuous production and wide in industrialization prospect.

Embodiments of the invention disclose a virtual network migration method and related equipment. The method comprises: a software-defined networking (SDN) controller monitors the running state of a physical network; when the SDN controller detects a change of the capacity of the physical network and a first virtual network satisfies preset migration conditions, the SDN controller modifies the mapping relationship between the first virtual network and the physical network. The method facilitates reducing the influence to network service stability caused by physical network capacity changes.

The invention discloses an optical system for measuring and regulating the center deviation of an optics lens at high precision, which relates to the optical system for measuring and regulating the center deviation of a lens in the technical field of optical inspection measurement. The invention aims to solve the technical problem of providing the optical system for measuring and regulating the center deviation of the optics lens at the high precision. The optical system comprises a light source, a focus lens, a pinhole, a collimating lens, a half wave plate, a polarization beam splitter, two1/4 wave plates, three planar mirrors, a plane swerving lens, two convergent lenses, two beam splitters, two occluders, a measured lens, two plane array receivers, a lens and a polarization analyzer.All above devices are combined to form a reference light path and a measurement light path, and carrying out interferometry to the center deviation of the measured lens through the measurement light reflected by the measured lens and the reference light. According to the optical system, measurement precision is improved, the measurement range is expanded, and a measurement process is simplified.

This invention relates to a method for producing composite wood fibers for guest soil spray seeding. The composite wood fibers are composed of: wood fibers, water, surfactant, plant growth regulator and composite fertilizer. Woods fibers with lengths of 40-60 mm and diameters of 1-1.5 mm constitute 65-70%, wood fibers with lengths of 10-40 mm and diameters of 0.3-1.0 mm 25-30%, and wood fibers with lengths of 0.5-10 mm and diameters of 0.1-0.3 mm less than or equal to 5%. The content of the surfactant is 30-60 ppm. The content of the plant growth regulator is less than or equal to 15 ppm. The content of the composite fertilizer is less than or equal to 5%. The water content is less than or equal to 15%. The wood fibers can improve the adhering stability of guest soil to slopes, and can make the matrix covering material moist in a long time, thus can promote the germination and growth of seeds. Besides, the wood fibers do not favor the multiplication of diseases, pests and bacteria.

The invention provides a C-axis sapphire polishing solution and a preparation method thereof. The C-axis sapphire polishing solution consists of the following components in parts by weight: 90-97 parts of silica sol, 0.01-2 parts of a brightener, 0.01-2 parts of an active dispersing agent, 0.01-1 part of an oxidant, 0.01-2 parts of a synergist and 1-5 parts of deionized water. According to the C-axis sapphire polishing solution, silica sol is used as an abrasive material and therefore the influence of aluminum oxide and a composite abrasive material containing other components on the stability of polishing solution is avoided; due to the added oxidant, the polishing solution generates a certain oxidization reaction with a sapphire wafer in the polishing process so as to reduce the surface roughness.

The invention provides a board card testing method and system. The board card testing method includes the steps: loading a testing script comprising a project to be tested and preset qualified parameters corresponding to the project to be tested by a testing server; instructing a testing tool corresponding to the project to be tested to test a board card by the testing server according to the project to be tested; testing the board card by the testing tool. According to the board card testing method and system, the testing server only needs to load the testing script, generate instructions and receive testing results, all testing operations are finished by the testing tool, so that the testing server does not need to integrate various testing software, stability of the testing server cannot be affected, and the management cost and operating difficulty of the testing server are reduced.

The invention discloses a method for cutting a fuselage skin under the condition of emergent pressure release of test flight of a passenger plane. The method comprises the following steps: firstly, a cutting position is selected to be on the rear of an engine room and bilaterally symmetrical with an axial line of a fuselage; secondly, the shape of a cut is a closed rectangle or a closed circle; thirdly, the cutting ability of a cutter is 1.25 to 1.35 times of the thickness of a cutting object; fourthly, the cutter is set to take the shape of the closed circle or the closed rectangle; and fifthly, after an insensitive electric detonator receives a priming signal, a fine silver detonating cord is primed and connected with the cutter through an energy amplifier which primes the cutter and cuts off the fuselage skin. The method is a quick and high-efficiency pressure release method, reduces the explosive amount, guarantees that an engine is not harmed by a skin block, is favorable for the safety of personnel in a test flight group, and can guarantee that the stability of the flight attitude of the plane is not influenced by the pressure release process due to synchronous priming.