365results about How to "Achieve impact" patented technology

The invention adopts the between-class square error and the gray scale information to realize the rapid positioning of the inside and outside boundaries of the iris. Firstly, the interested pupil region is extracted through blocking; the between-class square error is adopted to obtain the pupil binary threshold for the extracted pupil region; then the inside boundary of the iris is positioned accurately through the searching of the boundary points and the curve fitting; the interested region of the iris outside boundary is extracted according to the prior knowledge and the pupil position parameter; the selected region is processed with median filtering and first-order gradient conversion; the iris outside boundary is determined through the local gradient integration method; finally, the iris outside boundary parameter is determined through the circle fitting. The method avoids the image binary from depending on the histogram; the image positioning time is greatly improved because only the interested region is processed; the whole image is not processed; the experiment indicates that the robustness and the positioning efficiency of the algorithm can satisfy the real-time processing requirement of the image.

The invention provides a method and a device for achieving migration of a virtual machine in VPC. The method includes maintaining binding information between a virtual machine binary identifier for identifying the virtual machine and a provider edge router for providing service for the virtual machine; and under the condition that grouped data to the virtual machine are received, determining a binary identifier of a target virtual machine based on a received data packet, and determining the provider edge router associated with the binary identifier according to the maintained binding information, wherein the grouped data are to be routed to the determined provider edge router, and the binary identifier of the virtual machine comprises a private IP address of the virtual machine and a specificator capable of identifying a virtual private network (VPN) where the virtual machine is located.

The invention discloses an alkylation reactor and an alkylation reaction method. The reactor comprises a reactor tube body, closure heads, a revolving bed, a charging pipe, a charge distribution pipe, a discharging opening, a circulating cooling gas inlet, a circulating cooling gas outlet and a circulating cooling gas refrigeration system, wherein a shell body is formed by the reactor tube body and the closure heads, the revolving bed is arranged at the internal middle part of the shell body and is connected with a driving device through a revolving shaft, the charge distribution pipe is arranged in a hollow tube structure of the center of the revolving bed and is communicated with the charging pipe, the discharging opening is formed in the lower part of the shell body of the reactor, a sealing member is arranged between the upper part of the revolving bed and the shell body, static components and revolving components are sequentially arranged at the radial outer side of the revolving bed, and the circulating cooling gas refrigeration system is located between the circulating cooling gas inlet and the circulating cooling gas outlet. According to the alkylation reaction method disclosed by the invention, alkylation reaction is carried out by taking concentrated sulfuric acid as a catalyst and taking isobutane and alkene as raw materials. According to the alkylation reactor and the alkylation reaction method, the alkylation reaction can be carried out at relatively low temperature, the acid consumption is low, the quality of products is high, and the equipment scale is small.

The invention relates to a device and a method for magnetically grinding the inner surfaces of large-diameter long and straight pipes. The device comprises a bed, spindle motors, couplings, a magneticpole disc, a motor driving slide rail device and a hoisting device. Two ends of each pipe fitting can be sealed by pipe fitting plugs and are fixed by the aid of four-jaw chucks, the four-jaw chuck at one end of each pipe fitting is connected with the corresponding spindle motor by the corresponding coupling, the four-jaw chuck at the other end of each pipe fitting is connected with a support seat by bearings, support seat slide rails are fixed onto the bed, and the support seats are slidably connected with the support seat slide rails by support seat sliders; the motor driving slide rail device is arranged at the bottom of the bed, and the magnetic pole disc is connected with the motor driving slide rail device by the hoisting device, can be lifted under the control of the hoisting device and can axially move along the pipe fittings under the control of the motor driving slide rail device. The device and the method have the advantages that finish machining can be carried out on the inner surfaces of the pipe fittings by the aid of magnetic grinding processes, and carbon deposits, oil stain and rust stain which are accumulated at grooves inside the pipe fittings can be effectivelyremoved by the aid of the device and the method.

Provided are a method for selecting a wireless local area network (WLAN) operator and a WLAN and a user equipment. The method comprises: selecting a WLAN operator and a WLAN which are in communication in accordance with a first WLAN operator selection policy and a first WLAN selection policy provided by a HPLMN and a second WLAN operator selection policy and/or a second WLAN selection policy provided by a VPLMN; and establishing a connection with the selected WLAN in accordance with the selected WLAN operator and WLAN which are in communication. Because the priority of the first WLAN operator selection policy is higher than the priority of the second WLAN operator selection policy, a UE gives priority to the selection of an available WLAN provided by the WLAN operator that has a WLAN roaming partnership with a HPLMN network when selecting a WLAN, thereby realizing the influence and the control of a 3GPP network on the selection of the WLAN operator for the UE, increasing the access success rate of a user, bringing better experience for the user during switching and roaming, and also reducing the expense of the user when roaming.

The invention provides a self-adaption decoupling control method based on motion state synchronization. The self-adaption decoupling control method based on motion state synchronization is applied to a dissimilarity redundancy hybrid actuation system composed of a hydraulic actuator (HA) and an electro-hydrostatic actuator (EHA). According to the self-adaption decoupling control method based on motion state synchronization, the coupling model of the dissimilarity redundancy hybrid actuation system is established, and the different items between the HA and the EHA are compensated for; the state equation of a control surface model is decomposed, and a follow-up control instruction of the sum of the displacement of the HA and the EHA is generated; a synchronous self-adaptation decoupling control method is designed, the influence of a coupling item on the system is eliminated, accurate follow-up control over the control surface displacement instruction is achieved, and the force-fighting problem between different actuators is solved. By the adoption of the self-adaption decoupling control method based on motion state synchronization, accurate follow-up control over the control surface displacement instruction can be achieved, and the magnitude of force-fighting between different actuators is effectively reduced; in addition, the designed self-adaption control rule can accurately approach the true values of estimated parameters, and therefore the influence of uncertainty of the parameters on the control performance of the system is eliminated.

The invention discloses an alkylation reactor and an alkylation reaction method. The reactor comprises a reactor tube body, closure heads, a revolving bed, a charging pipe, a charge distribution pipe, a discharging opening, a circulating cooling gas inlet, a circulating cooling gas outlet and heat pipe elements, wherein a closed shell body is formed by the reactor tube body and the closure heads, the revolving bed is arranged at the internal middle part of the shell body and is connected with a driving device through a revolving shaft, the charge distribution pipe is arranged at the center of the revolving bed and is communicated with the charging pipe, and the discharging opening is formed in the lower part of the shell body; a sealing member is arranged between the revolving bed and the shell body, the heat pipe elements are arranged at the outer side of the revolving bed and sequentially penetrate through the sealing member and the shell body, the heat pipe elements outside the shell body are sealed with a jacket, a refrigerant inlet and a refrigerant outlet are formed in the jacket, and the circulating cooling gas inlet and the circulating cooling gas outlet are formed in the shell body. According to the alkylation reaction method disclosed by the invention, alkylation reaction is carried out by taking concentrated sulfuric acid as a catalyst and taking isobutane and alkene as raw materials. According to the alkylation reactor and the alkylation reaction method, the alkylation reaction can be carried out at low temperature, the acid consumption is low, and the equipment scale is small.

An experimental unit of suspended basket security keylock in high-lift operation relates to an experimental unit that comprises: supporting leg, dropped iron, parallel, pusher clusters, elastic machine, sensor, upper beam, elevator, bridging beam, power distribution wire, power distribution control pedestal, safe tension monitoring device, platform horizontal monitoring mechanism. The upper beam and the bridging beam are mounted on the upper part of supporting leg via flanged connection, the elevator is mounted on the beam, the elastic machine and parallel are hung on the elevator, the elastic machine is connected with the pusher clusters via brace, the dropped iron is mounted under the parallel equipped with additional weight iron, the suspended buffer and sensor are located on the beam, the safe tension monitoring device consists of tension sensor and secondary instrument, the upper beam is case welded by steel sheet; The unit reinforces quality inspection for security keylock, eliminates the accident potential caused by quality problems of security keylock. The equipment and personal safety can be safeguarded effectively.

The invention relates to pour point depressing and viscosity reducing composition for heavy oil, a pour point depressing and viscosity reducing agent for the heavy oil and a preparation method of the pour point depressing and viscosity reducing agent, and belongs to the technical field of oil exploitation. The pour point depressing and viscosity reducing composition for the heavy oil comprises components in parts by weight as follows: 25-55 parts of a surfactant, 5-20 parts of a dispersing agent, 15-20 parts of an inhibitor and 20-50 parts of a co-emulsifier, wherein the dispersing agent contains polyoxyethylene alkyl amine, and polyoxyethylene alkyl amine accounts for not lower than 9% of the dispersing agent in percentage by mass. The pour point depressing and viscosity reducing composition for the heavy oil has good emulsifying viscosity reduction functions on the heavy oil with the gum asphalt content of 40% and the freezing point of 40 DEG C, the viscosity reducing rate can be up to 99% or higher and the pour point depressing range can be up to 15 DEG C or higher only through addition of 0.5% by mass of the pour point depressing and viscosity reducing agent product, and the problems of high entering-pump resistance of crude oil and difficulty in shaft lifting can be solved very well.

The invention discloses an intelligent urban rainwater storage regulation system and a construction method thereof. The system comprises a rainwater storage regulation tank, a water through device, a filter device and a water distribution tank. A first water level sensor and a second water level sensor are arranged on the inner side of a park pool, and the water through device is positioned between the first water level sensor and the second water level sensor and close to the second water level sensor. A silt clearing tank is arranged at the top of the park pool, the filter device is connected with a residence region and a road surface through a first water inlet pipe and a second water inlet pipe respectively, and the rainwater storage regulation tank is connected with the residence region and the water distribution tank through a first water drain pipe and a second water drain pipe respectively. The method includes steps of survey setting-out, rainwater storage regulation tank construction, filter device construction, water distribution tank construction, road surface construction, pipeline connection arrangement and rainwater storage regulation system commissioning. The construction method is simple in step, rainwater quick drainage and storage are facilitated, flood or waterlogging is prevented, and stored rainwater can be used for irrigation and domestic water.

The invention relates to the technical field of organic solid waste processing, in particular to an organic solid waste film covering high-temperature aerobic fermentation method. The fermentation method is characterized in that the organic solid waste is pretreated; the pretreated material is piled in strip pile; the material strip pile is provided with a sensor and covered with a waterproof breathable film; a blower and an air-pipe under the material are used for supplying oxygen to the material; an intelligent ventilating control system is used for optimizing the fermentation process; after the material is fully decomposed, the waterproof breathable film on the material strip pile is removed, and then the material strip pile is transported into a clinker storing or processing area. Compared with the prior art, the fermentation method has short building period, few disposable investment, flexible construction, low operating cost, small odor influence, rain-proof, wind prevention and heat preservation effect and can protect the material from being affected by outside weathers.

The invention discloses a self-compensating concrete integrated strain gauge, which is mainly characterized in that a compensation resistor is provided on the strain gauge, the compensation resistor and the working piece form a half-bridge or full-bridge working mode, and the compensation resistor adopts a high-precision resistor with no stress output Or small grid strain gauges, which can automatically compensate the influence of temperature on the bridge and wires, overcome the difficulty that it is impossible to equip each measuring point with a compensation block and ensure that its temperature and change are consistent; it can also eliminate the influence of wire length on detection sensitivity At the same time, the reinforced fiber insulation base and flexible waterproof sealing material are used to carry out the overall waterproof sealing treatment, which not only ensures the technical requirements of the insulation resistance of the strain gauge, but also has the effect of convenient, fast, accurate and safe on-site installation. .

The invention discloses an internal heat circulation type dehumidification and heat dissipation type power distribution cabinet, belongs to the field of power distribution cabinets. The cabinet realizes the circulation flow of a heat dissipation settlement ball in a closed airflow channel through the heat absorption and heat release processes of the heat dissipation settlement ball, performs continuous heat dissipation on the interior of a cabinet body, and in the circulation flow process of the heat dissipation settlement ball, a rotary moisture reducing device is pushed to rotate through thevertical falling process of the heat dissipation settlement ball, so that the flowing of air flow in the cabinet body is accelerated, the heat dissipation efficiency can be improved, the heat in thecabinet body can be uniformly distributed, local moisture in the cabinet body is heated, the vaporization of the moisture is promoted, Water vapor can be discharged to the outside along with heat flow. In addition, the rotary moisture reduction device also has an absorption effect on vaporized moisture, the influence of the moisture on electrical equipment is reduced, and the absorbed water vaporcan be quickly diffused to the outside along with the air flow along with the rotary movement of the rotary moisture reduction device, so that the moisture reduction treatment on the interior of the cabinet body is realized.

The invention discloses a permanent magnet synchronous motor speed adjusting system based on internal model control and a design method thereof. The method includes the steps of designing a standard speed internal model controller, designing a dual-port speed internal model controller, designing a fuzzy self-adaptive speed internal model controller, and determining a final q-axis current referencevalue according to the designed fuzzy self-adaptive speed internal model controller to realize the dual-closed-loop vector control of a motor. The influences caused by motor model mismatch and external interference on motor operation are solved, the motor control effects of enhancing the control system speed tracking performance and anti-interference performance are realized, and speed tracking and load disturbing can be well realized. The influences caused by model mismatch and external interference on motor operation can be overcome, and therefore the robustness and stability of the systemare improved.

The invention discloses a micro-grid system with functions of improving operation control and protection performance. The micro-grid system mainly comprises a multi-inverter-parallel-operation control strategy, a micro-grid relay protection scheme and micro-grid load prediction, wherein an improved droop control algorithm is adopted for the multi-inverter-parallel-operation control strategy, region differential-motion main protection, overcurrent backup protection and fault component comprehensive impedance bus protection of normalization brake coefficients are adopted for the micro-grid relay protection scheme, and a neural network model is adopted for the micro-grid load prediction. According to the micro-grid system, the improved droop control algorithm of the multi-inverter-parallel-operation control strategy and the region differential-motion main protection, the overcurrent backup protection and the fault component comprehensive impedance bus protection of the normalization brake coefficients of the control strategy of the micro-grid relay protection and the neural network model of the micro-grid load prediction are combined together, the operation, control and protection performance and intelligent level in switching among different modes of a micro-grid are improved.

The invention discloses a finite control set model predictive control method of an LCL type energy storage converter. The state variable estimation is combined with delay compensation. The converter side current, the capacitor voltage and the grid current are estimated by sampling grid current, and the error between the sampled grid current and the estimated grid current is subjected to a correction matrix to reduce the influence caused by model mismatch and parameter drift, and then the estimated state variables are subjected to the finite control set model predictive control algorithm with the delay compensation link so as to improve the system performance and finally realize the control of the LCL energy storage converter. The number of sensors can be reduced, the cost can be reduced and the reliability of the system can be enhanced; and the influence of calculation delay on the system performance is eliminated through combination of the delay compensation algorithm and thus the quality of incoming current is improved.

The invention discloses a method for repairing and polishing ceramic parts through laser. The method comprises the steps of S1, cleaning the ceramic part, and assembling the ceramic part to a three-dimensional moving platform; S2, scanning the surface contour of the ceramic part, comparing the scanned contour model with a standard model, and dividing the surface of the ceramic part into an etching region, a polishing region and a sintering region; S3, processing the etching region by using excimer laser equipment; S4, carrying out preset powder feeding on the sintering region, and carrying out sintering repair by using long-wavelength laser; S5, carrying out rough polishing on the sintering region; S6, carrying out overall polishing on the processing area; and S7, scanning the surface roughness of the ceramic part, executing the step S6 if the roughness does not meet the requirement, and completing the excimer laser polishing process if the roughness meets the requirement. The method has the advantages that the controllability is good, the automatic production can be realized conveniently, the precise processing of the micro-area can be realized, any curved surface and any part can be treated, the influence on a ceramic matrix is remarkably reduced, and the precision, the quality and the efficiency of part repairing and polishing are guaranteed.

The invention discloses a capacitor testing device used for testing the performance of a to-be-tested capacitor. The capacitor testing device comprises a power supply module including an adjustable high-power power supply, a testing module including a testing collection unit and a control unit, a storage module connected with the control unit, and a man-machine interaction module including a display unit. By arranging the testing collection unit, the control unit, the storage unit and the display unit, complete record and effective comparison of related performance indexes of the to-be-tested capacitor and more user-friendly man-machine interaction can be realized. Finally, the performance of the to-be-tested capacitor can be analyzed based on a temperature characteristic curve, a voltage withstanding characteristic curve and an attenuation characteristic curve graph drawn by the control unit, and the first-pass yield of capacitors can be improved in an automatic way. The invention further discloses a capacitor testing method.

The invention provides an obstacle surmounting deicing device and method of a high-voltage wire. The obstacle surmounting deicing device comprises a suspended workbench,a workbench suspending unit,a front arm lifting unit and a rear arm lifting unit are arranged on the suspended workbench,and the front arm lifting unit and the rear arm lifting unit are symmetrically arranged by taking the verticalaxis of the suspended workbench as the center; a front arm is connected with the front arm lifting unit and is controlled by the front arm lifting unit; a rear arm is connected with the rear arm lifting unit and is controlled by the rear arm lifting unit; the front arm,the rear arm and the workbench suspending unit are all suspended on the high-voltage wire. The obstacle surmounting deicing device can achieve reliable suspending and meanwhile provide power for walking along the wire on the wire with frozen ice columns,and does not easily slip,and the workbench suspending unit and the walkingunit work independently and do not interfere with each other.

The invention discloses a utility tunnel gas leakage concentration field prediction and correction and leakage rate estimation method. The utility tunnel gas leakage concentration field prediction andcorrection and leakage rate estimation method integrates real-time monitoring data of a gas sensor, a wind speed and direction sensor and a temperature and humidity sensor inside a utility tunnel, structures a numerical calculation model of gas leakage and diffusion inside the utility tunnel and applies a data assimilation method to predict and estimate of a gas leakage and diffusion process andthe gas pipe leakage rate, wherein the data assimilation method is an improved ensemble Kalman filter algorithm, and the state vectors of the improved ensemble Kalman filter algorithm are composed ofgas concentration and the leakage rate. The utility tunnel gas leakage concentration field prediction and correction and leakage rate estimation method combines monitoring data of the wind speed and direction sensor and the temperature and humidity sensor, can inhibit the influence of uncertainty of wind flow speed and diffusion coefficient on results after adding noise meeting practical situations into the wind flow speed and the diffusion coefficient, and can acquire the internal gas concentration distribution inside the utility tunnel and meanwhile accurately perform inverse estimation on the gas pipe leakage rate, thereby well meeting the practical situations.

The invention discloses a modularization positioning fixture and a positioning fixture assembly. The modularization positioning fixture comprises a pressure head, a first connecting plate, a first clamping air cylinder and a dustproof cover; one end of the pressure head is hinged to the front end of an extending rod of the first clamping air cylinder, and the middle portion of the pressure head is hinged to the first connecting plate; and the periphery of the extending rod of the first clamping air cylinder is surrounded by the dustproof cover. The modularization positioning fixture is simple in structure and small in size; moving parts are effectively protected, and the service life of the fixture is prolonged; the modularization positioning fixture is convenient to install, safe in use and high in efficiency; and standard modules are directly called, the machining period is short, the cost is low, and the opening angle of the fixture is large.