929results about How to "System stability" patented technology

The invention relates to a charged-particle-optical system for a charged particle beam exposure apparatus, said system comprising:a first aperture means comprising at least a first substantially round aperture for partially shielding an emitted charged particle beam for forming a charged particle beamlet;a lens system comprising at least one lens for focussing a charged particle beamlet from said first aperture within or in the vicinity of an image focal plane of said lens;a deflector means, substantially located in said image focal plane, comprising at least one beamlet deflector for the deflection of a passing charged particle beamlet upon the reception of a control signal, anda second aperture means comprising at least one second substantially round aperture positioned in the conjugate plane of the first aperture, and said second aperture being aligned with said first aperture and said beamlet deflector for blocking said charged particle beamlet upon deflection by said beamlet deflector and to transmit it otherwise.

A power supply system capable of smoothing photovoltaic generation output, and enabling time shift is provided. A power supply system including a DC power supply string in which a storage battery is connected in parallel to a DC power supply; and a DC / AC power conversion device for connecting the DC power supply string to a power system or a load is provided. A switch is connected between the DC power supply and the storage battery, where an output power of the DC power supply or a combined output power of the DC power supply and the storage battery is switched and supplied to the DC / AC power conversion device by the switch. The photovoltaic generation output is thereby smoothed, and time shift is enabled.

Systems and methods of the present invention manage data flow of a computer and computer network in a secure domain. The system includes an administration module and a management module. The administration module assigns a security label to data within the secure domain, and establishes a set of schema based on the security labels associated with the data. The management module regulates data flow within the secure domain based on the set of schema.

The present disclosure relates to a number of inventions directed, generally, to the application of image processing techniques to traffic data acquisition using video images. The inventions reside in a traffic monitoring system, the basic function of which is for traffic data acquisition and incident detection. More specifically, the application of image processing techniques for the detection of vehicle, from sequence of video images, as well as the acquisition of traffic data and detection of traffic incident. In one aspect, the present invention provides a method of processing images received from a video based traffic monitoring system. In another aspect, the present invention is directed to a Region Of Interest (ROI) for detection of a moving vehicle and a further aspect is directed to a method of detecting day or night status in a traffic monitoring system. It's The application of various algorithms to a video based traffic monitoring system is also considered inventive. Other inventive aspects of the present traffic monitoring system are outlined in the claims.

A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. In one aspect, the working chamber firing that are selected to deliver the desired engine output are determined at least in part based on torque feedback. The torque feedback may be an indication of the torque output of the engine or the torque experienced at some other location in the drive train. In some embodiments, the torque feedback signal is filtered to remove high frequency components of the torque feedback signal in order to help stabilize the system. In another aspect, other operational parameters are used as feedback in the determination of the firing sequence. In yet another aspect, a filter is arranged to filter a feedback signal to provide a filtered feedback signal that is used in the determination of the working chamber firings.

A system and method for separating a mixture of audio signal into desired audio signals (430) (e.g., speech) and a noise sign (440) is disclosed. Microphones (310, 320) are positioned to receive the mixed audio signals, and an independent component analysis (ICA) processes (212) the sound mixture using stability constraints. The ICA process (508) uses predefined characteristics of the desired speech signal to identify and isolate a target sound signal (430). Filter coefficients are adapted with a learning rule and filter weight update dynamics are stabilized to assist convergence to a stable separated ICA signal result. The separated signals may be peripherally-processed to further reduce noise effects using post-processing (214) and pre-processing (220, 230) techniques and information. The proposed system is designed and easily adaptable for implementation on DSP units or CPUs in audio communication hardware environments.

A system for reducing central sleep apnea (CSA) is described in which certain methods of increasing a patient's rebreathing during periods of the sleep cycle are used. By increasing rebreathing during periods of overbreathing, the over-oxygenation which typically results from the overbreathing period can be reduced, thus reducing the compensating underbreathing period and effectively reducing the loop gain associated with the central sleep apnea. Nasal occlusion and a leak resistant oral interface provide control for gas leaks from a patent interface.

A control system for a power generation apparatus and method may fly a rotorcraft rotary wing at an altitude above the nap of the earth. A tether, suitably strong and flexible, connected to the rotorcraft framing is pulled with a force generated by the rotary wing. The force is transmitted to a ground station that converts the comparatively linear motion of the tether being pulled upward with a lifting force. The linear motion may be transferred to a rotary motion in the ground station to rotate and electrical generator. The tether may be retrieved and re-coiled by controlling the rotorcraft aircraft to basically fly down at a speed and lift force to support recovery of the rotorcraft at a substantially reduced force compared to the larger lifting force in effect during the power-developing payout of the tether. Moreover, the duty cycle of such a system is substantially increased over any terrestrially based or tower-mounted wind turbine mechanisms.

A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidized bed riser for desorption of ions (operating as a riser fluidized bed) to provide regenerated particles. Ion exchange particles circulate continuously between the riser and the downer i.e. the particles that have adsorbed ions in the absorber pass from the adsorber (downer) to the desorber where they are regenerated and the so regenerated particles are return to the adsorber near the top of the adsorber column. The LSCFB can be used in processes for continuous recovery of the ions of interest.

A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. In one aspect, the working chamber firing that are selected to deliver the desired engine output are determined at least in part based on torque feedback. The torque feedback may be an indication of the torque output of the engine or the torque experienced at some other location in the drive train. In some embodiments, the torque feedback signal is filtered to remove high frequency components of the torque feedback signal in order to help stabilize the system. In another aspect, other operational parameters are used as feedback in the determination of the firing sequence. In yet another aspect, a filter is arranged to filter a feedback signal to provide a filtered feedback signal that is used in the determination of the working chamber firings.

The invention relates to a preparation method of an organic exhaust gas micro-emulsion absorption liquid, and a method for applying the micro-emulsion absorption liquid for cleaning industrial organic exhaust gas comprising benzene, toluene, xylene, and the like. The invention belongs to the technical field of atmosphere pollution control. The absorption liquid is prepared from the components of, by mass, 80-90% of water, 0.5-3% of a surfactant, 7-19.5% of a coupling agent, and 0.02-0.06% of an auxiliary agent. The surfactant is sufficiently mixed with water, such that a surfactant solution is obtained; the auxiliary agent is dissolved in water, such that an auxiliary agent solution is obtained; the two solutions are combined and uniformly mixed; and the coupling agent is added, and the obtained solution is stirred, such that the organic exhaust gas micro-emulsion absorption liquid is obtained. The organic exhaust gas micro-emulsion absorption liquid is suitable to be used for controlling exhaust gas containing benzene-series volatiles, and has the advantages of convenient raw material source, low cost, mild and stable property, low toxicity, environment-friendliness, no absorption tower corrosion or blocking phenomena, no severe influence to human health, high removal rate to organic exhaust gas, no need of pretreatment upon exhaust gas, and low investment and running cost. Saturated absorption liquid and absorbed organics can be recycled, such that waste can be turned useful.

The present invention relates to estimating the attitude angles of an aircraft (1). The estimated attitude angles are generated by a device (9) that performs algorithmic integration on inertial measurements indicative of an angular velocity and of a linear acceleration. Horizontal components (34-39) of desired corrections are obtained by a linear combination of two horizontal components (32-33), with cross coefficients between said horizontal axes being continuous variable over time and dependent on the estimated rate of turn. As a result, the estimated attitude angles are stable, and the biases of the gyros continue to be estimated, including during stages during which the aircraft (1) is turning.

The invention discloses conductive ink based on a graphene composite material and a preparation method thereof. The conductive ink is prepared from the following components in parts by mass: 1-30 parts of a functional graphene composite material, 1-70 parts of a resin coupling agent, 5-60 parts of a solvent and 1-40 parts of an auxiliary. According to the method, graphene is modified into a functional graphene composite material, low density and high conductivity of graphene can be maintained, the situation that graphene is easily agglomerated and difficult to disperse can be improved, and then affinity between conductive filler and a resin connecting material is improved, so that the high-conductivity conductive ink under a low-content conductive agent can be successfully prepared. The conductive ink is simple in preparation method, stable in system, good in conductivity and easy to print, has a flexible and abrasion-resistance membrane layer, can be widely applied to radio frequency tags, intelligent package, film switches, conductive circuits, sensors and other light flexible electronic products, and has a huge market prospect.

This invention relates to a carbon nanometer pipe surface modification and its disperse method in epoxy resin. The method includes (a) carbon nanometer pipe that is passivated to 0.5~500nm pipe diameter, 200nm~40ª–m and coupling agent is agitated with organic solvent to react for 10~20 minutes. (b) Certain dispersant and organic solvent are added into the uniform compound, then it is proposed for 20~40 minutes. (c) the solution said above is mixed with certain epoxy resin for 10~20 minutes. The carbon nanometer in this system is easy to disperse, and the system is stable.

A method and a system control admission for voice transmission over a multi-hop network. The method takes multiple parameters into account in order to make a decision and ensures that the system remains stable. The parameters may include options (e.g., aggregation level, bursting level, and transmission rate) and constraints (e.g., the number of users, access points, or sensing range of each user). The method computes the load of the network given each set of options and constraints and compares it against the packetization interval of the voice codec to check whether or not the system is stable. An algorithm of the method finds the best trade-offs between overhead reduction (e.g., due to contention and to packet headers) and a solution robust to channel errors, if links are noisy. If several stable solutions corresponding to different options exist, additional criteria (e.g., the least number of hops, the highest transmission rate) may be used to determine the final “best” solution.

The invention belongs to the field of automobile surface washing, and relates to an anhydrous car washing liquid. The washing liquid is mainly composed of the following raw materials in parts by weight: 10 to 35 parts of paint film protective agent, 3 to 15 parts of luster-enhancing / lubricating conditioning agent, 2 to 18 parts of ionic liquid, 5 to 32 parts of surfactant, 4 to 16 parts of auxiliary surfactant, 0.1 to 5 parts of scratch filler, 0 to 10 parts of deionized water, and 0.01 to 0.3 part of essence. The selected ionic liquid and surfactant can generate a synergetic effect, under the help of a co-emulsifier, a thermally-stable micro-emulsion system can be formed, the system is stable, the dirt removing performance is greatly improved, and the organic attachment such as bird manure can be easily removed by the provided washing liquid.

The present invention discloses a multi-positive-ion amide-type asphalt emulsifier and a preparation method thereof, and the asphalt emulsifier is prepared from raw materials of N-hydrogenated tallow-1,3-propylene diamine, an alcohol solvent, acrylamide, a low-carbon tertiary amine, industrial hydrochloride and epichlorohydrin in the molar ratio of N-hydrogenated tallow-1,3-propylene diamine to alcohol solvent to acrylamide to low-carbon tertiary amine to industrial hydrochloride to epichlorohydrin of 1mol: (5.00-11.00) mol: (3.00-3.10) mol: (2.02-2.10) mol: (2.02-2.10) mol: (2.02-2.08) mol. The alcohol solvent is ethanol, methanol or isopropanol. The low-carbon tertiary amine is a trimethylamine aqueous solution, triethylamine or triethanolamine. The asphalt emulsifier synthetic raw materials are readily available, production cost is low, a process is simple, and a high temperature reaction is not required. The asphalt emulsifier can emulsify a variety of different types of asphalt, the prepared emulsified asphalt is fine, uniform, and good in storage stability, and positive-ion-type emulsified asphalt can be prepared.

Nonlinear control method for the micro-grid inverter with anti-disturbance. By generating reference currents that satisfy specific active and reactive power command under various working conditions, and introducing a nonlinear control method based on Lyapunov function to control the inverter, fast and accurate tracking of the generated reference signals is realized. The method realizes effective decoupling control of active power and reactive power. The system has high dynamic response and good robustness. Besides, the control structure of the method is simple and easy to implement, and the synchronous control link and the additional voltage and current regulator are omitted. The method realizes fast and accurate power exchange and stable power transmission between the inverter and the grid in the micro-grid under various working conditions, and provides a guarantee for improving the energy management efficiency within the micro-grid.

The present application provides a control device for controlling a switching converting module to generate an output signal of constant output current from a rectified AC power supply signal. The switching converting module comprises a primary winding for receiving the rectified AC power supply signal and a power switch coupled in series with the primary winding. The control device comprises: an AGC amplifier configured to receive a first sampling signal sampled from the rectified AC power supply signal, and to generate a reference signal of constant amplitude according to the first sampling signal; a signal comparator configured to compare the reference signal with a current sensing signal in proportion to a primary side current flowing through the primary side winding to generate a comparison signal; a signal generator configured to receive a second sampling signal sampled from the output signal, and to generate a clock signal according to the second sampling signal; and a control logic configured to generate a control signal for switching the power switch according to the comparison signal and the clock signal.

The invention disclose a modified sand body, which is formed by the mixing of solution and sand, wherein the solution with cohesiveness and adhesion is formed by dissolving water-soluble solid state organic substance in water. According to the invention, after the water is evaporated, the water-soluble solid state organic substance can bond sand particles, and dissolve in water again to form the solution with the cohesiveness and the adhesion to bond the sand particles; the modified sand body allows a common sand body to be in 'pedogenesis', changes the interaction relation between sand body particles, and forms a particle pore structure with binding force (cohesive force); when the modified sand body is in the use process, the substance is difficult to run off due to the characteristics of the cohesiveness and the adhesion; the sand body is allowed to have same properties of stabilizing and storing moisture and nutrient as the properties of the soil, so as to be able to provide strong conditions for the growing of plants, and be an ideal measure for the governing of deserts; meanwhile, the modified sand body can also be taken as a means to utilize sand resources of a sand beach and the like to conduct plant planting.

The invention relates to a floating number plates discriminating method, which is based on the three-road parallel manmade nerve-net. The identify steps are that adopting the video burst mode to catch the video automatically for the collection of video pictures of the moving vehicle, character cutting the part of pictures of the number plates and then being the input signal of the nerve-net; said nerve-net adopts three standard self-adapt vibrate net each of which has its own work, the three nets are the Chinese characters identify net, the English characters identify net and the data identify net, all of which identify the inputted vector signals at one time, and outputs the most similar sort unity respectively, through controlling the property of the Territory value and the identify accurately according to the number plates and filter, at last add a color property of number plates as the output of the discriminating results. Adopting the method of the invention can identify the number plates of vehicle fast and accurately under the largest driving speed of the vehicles.

The invention discloses a method for switching main and backup clocks, which is applied to a system comprising a main clock board and a backup clock board. Clock generation chips of the main clock board and the backup clock board respectively track a common-frequency clock source of the respective clock board; the mutual transmission of the main and backup clocks and data is achieved through respective logic chips; when the main and backup clocks are to be switched, a pre-switching instruction is sent to the logic chip of the main clock board, and after receiving the instruction, the logic chip of the main clock board sends a synchronous instruction to the logic chip of the backup clock board; after receiving the synchronous instruction, the logic chip of the backup clock board sends an effective synchronous signal in a pulse form to the clock generation chip of the backup clock board; and the clock generation chip of the backup clock board stops the clock output when the synchronous signal is effective, and restores the clock output after first delay time when the synchronous signal is not effective, phase positions of the main and backup clocks are aligned, and the main and backup clocks are instructed to execute main and backup switching. The method cannot cause phase position transient variation, unstable system and poor reliability due to the switching, and simultaneouslyhas less occupied resources.

The invention provides an anti-tumor polypeptide nano-drug as well as a preparation method and application thereof. The anti-tumor polypeptide nano-drug comprises amphiphilic anti-tumor polypeptides and acid responsiveness functional molecules coupled with the amphiphilic anti-tumor polypeptides; the amphiphilic anti-tumor polypeptides comprise hydrophilic anti-tumor polypeptides, enzyme responsiveness polypeptides and hydrophobic polypeptides. According to the anti-tumor polypeptide nano-drug prepared by the preparation method, the bottleneck that the common polypeptide drug is short in half-life period is overcome; therefore, the anti-tumor polypeptide nano-drug is a tumor immunotherapy polypeptide nano-drug which has dual responsiveness of a weak acid environment and protease on a tumorsite and is good in responsiveness, strong in stability, high in safety, high in bioavailability and good in anti-tumor function.

The invention discloses a high-molecular soil curing agent, and belongs to the building material technology field. The high-molecular soil curing agent is prepared from the following components, by weight, 4-8 parts of ordinary portland cement, 35-45 parts of binding agent, 15-25 parts of reinforcing agent, 4-6 parts of early strength agent, 4-9 parts of waterproof agent, 7-9 parts of filling agent, 2-4 parts of water reducer, 0.3-0.7 part of surfactant, 4-6 parts of dispersant and 0.01-0.03 part of air entraining agent. The soil curing agent has advantages of reasonable formula, large penetration depth (18mm), large compressive strength (the 7-day unconfined compressive strength is 12.42MPa), and high water resistance (the 7-day immersion water absorption is 0.86%), and can be applied to engineering of roads, railways, subways and the like.

The invention relates to a charged-particle-optical system for a charged particle beam exposure apparatus, said system comprising: a first aperture means comprising at least a first substantially round aperture for partially shielding an emitted charged particle beam for forming a charged particle beamlet; a lens system comprising at least one lens for focussing a charged particle beamlet from said first aperture within or in the vicinity of an image focal plane of said lens; a deflector means, substantially located in said image focal plane, comprising at least one beamlet deflector for the deflection of a passing charged particle beamlet upon the reception of a control signal, and a second aperture means comprising at least one second substantially round aperture positioned in the conjugate plane of the first aperture, and said second aperture being aligned with said first aperture and said beamlet deflector for blocking said charged particle beamlet upon deflection by said beamlet deflector and to transmit it otherwise.

The invention discloses an anti-collapse circulating microfoam drilling fluid or completion fluid, which consists of (A) base slurry: bentonite 2-4.5 or 6-10, soda ash 0.2-0.3 water 100 parts by weight. (B) Additives: ① Anti-slump agent 2-5, ② Cementing agent 3-5, ③ Viscosifier 0.5-3, ④ Fluid loss reducer 1-3, ⑤ Foaming agent 0.5-5, foam stabilizer 0.5- 2.5, flow regulator 0.5-2.5. The invention has strong anti-slump function and strong adaptability, can be used as both drilling fluid and completion fluid, can be applied to low-pressure carbonate formations, and low-pressure, low-permeability mudstone formations and rock formations It is mainly used in drilling and completion of low-pressure, low-permeability and easy-collapse formations.

The present invention discloses an environmental protection fire retardation type textile printing coating material and a preparation method thereof. According to the present invention, a fire retardation type acrylate is adopted as a main base material to prepare a fire retardation type coating material for textile printing, wherein the prepared fire retardation type coating material self-extinguishes within 5 seconds after leaving fire, and has characteristics of good fire retardation effect, good elasticity, low cost, excellent washing fastness resistance, and excellent color fastness; during a production process and a use process of the product, no formaldehyde is released, an environmental protection characteristic is provided, and the product does not contain heavy metals and alkyl phenol substances, and is an environmentally friendly and green product; and the preparation method has characteristics of easy production process control, high production efficiency and stable system, and is suitable for industrial scale production.