149results about How to "Eliminate lag" patented technology

The invention belongs to the slope stability estimation and landslide hazard monitoring and early warning technologies. A landslide forecasting method capable of utilizing underground water levels and displacement real-time monitoring includes the following steps: (1) landslide preliminary reconnaissance and monitoring point selection; (2) monitoring arrangement and installation of equipment; (3) monitoring the landslide displacement and the underground water levels in real time and processing real-time monitoring data; (4) statistical analysis period by unit and confirming mean-value underground water level HO and a displacement speed VO; (5) confirming underground water level loading and unloading parameters and loading and unloading quantities; (6) confirming displacement speed response parameters and displacement response quantities; (7) confirming the landslide displacement speed and underground water level loading and unloading response ratio parameters and numbers; (8) applying the underground water levels and displacement speed loading and unloading response ratio to carrying out evaluating slope stability and monitoring and early warning. According to the landslide forecasting method capable of utilizing the underground water levels and the displacement real-time monitoring, produced erroneous judgement or mistake judgement that landslide physics mechanical parameters, boundary conditions and the like can not be confirmed difficultly and accurately by the transitional ultimate equilibrium mechanics appraisal method can be overcome effectively.

A system and method are disclosed for using free storage capacity on a plurality of storage media as a virtual storage device on a computer network comprising a plurality of computers. A first portion of each storage medium stores data. To implement Virtual Network Attached Storage (VNAS), the respective “free” second portions of each storage medium are aggregated into a shared storage volume. Computers on the network may mount the shared storage volume at one of a plurality of mount points and may store data on the shared storage volume. VNAS may be implemented in a peer-to-peer manner whereby each computer acts as a server for the data stored on its part of the shared storage volume (i.e., the second portion of its storage media). VNAS may be used to implement a system and method for managing data fail-over.

A vehicle mounted stereo camera apparatus including a plurality of imaging units for generating image data sequentially based on optical information from an object, and an image processing unit for importing the image data generated by the plurality of imaging units respectively, processing the imported image data individually, and then performing a stereo image process operation. The image data input into the image processing unit are synchronized with clock signals for importing and processing the image data respectively. Thus, the stereo image process operation is performed without horizontal pixel misalignment between image data A and B from the plurality of imaging units, so as to attain a stereo matching process with a high accuracy.

A contact lens and a method for treating an eye with myopia is described. The contact lens includes an inner optic zone and an outer optic zone. The outer optic zone includes at least a portion with a first power, selected to correct distance vision. The inner optic zone has a relatively more positive power (an add power). In some embodiments the add power is substantially constant across the inner optic zone. In other embodiments the add power is variable across the inner optic zone. While in some embodiments the inner optic zone has a power designed to substantially eliminate lag of accommodation in the eye with myopia, in other embodiments, the add power may be higher.

The invention provides a product processing and delivery informationized management system model based on an internet plus technology. The model based on the construction method comprises a customer interaction unit module, a business (production and delivery) performance unit module and a customer opinion feedback unit module. The three unit modules are integrated in a whole management system. A raw material purchasing and processing and delivery plan can be automatically generated, and whole-process monitoring and early warning of all the key business nodes can be realized so that redundant inventory in the links can be greatly reduced and occupation of funds can be reduced; meanwhile, rapid chain response to abnormal business can be realized, artificial lag and error in information transmission of each link can be eliminated, multiple aspects of problems that a conventional supply chain is high in inventory, low in efficiency and slow in information transmission and lacks sharing can be solved, supply guarantee capacity of steel for the automobile enterprises can be enhanced and efficiency of the supply chain can be greatly enhanced.

The invention provides a wall climbing device, a cleaning method, a cleaning robot and a spraying robot. The wall climbing device comprises a main body, a controller, a first motor and a second motor arranged on the main body, two sets of first sucker mechanisms slidingly arranged on two sides of the main body, and a second sucker mechanism slidingly arranged in middle of the main body; the two sets of first sucker mechanisms are both in transmission connection with the first motor, and are driven by the first motor to linearly move back and forth at the same time; the second sucker mechanism is in transmission connection with the second motor, and is driven by the second motor to linearly move back and forth; the moving directions of the first sucker mechanisms and the second sucker mechanism are in parallel; the first sucker mechanisms and the second sucker mechanism respectively comprise lifting modules and at least one sucker; each sucker is connected with a vacuum generation part; all the suckers are connected with a lifting module; and the first motor, the second motor, the lifting module and the vacuum generation part are all connected with the controller. The wall climbing device is simple in structure, liable to control and overally suitable for climbing in any place.

The invention discloses a tourist attraction saturation pre-warning method with a function of passenger flow volume fitting on the basis of network attention. The method includes: inquiring daily passenger flow volume data of a scenic spot in a certain research period according to an official website of the scenic spot or a local tourism yearbook; calculating network attention of the scenic spot within the research period; adopting MATLAB software to subject two groups of data to cross-correlation function analysis so as to obtain a time series difference value between the network attention of the scenic spot and the passenger flow volume of the scenic spot, and fitting a scenic spot passenger flow volume prediction model; inputting the network attention of the scenic spot in the research period, calculating to obtain predicated passenger flow volume, and when the predicated passenger flow volume is larger than a comfort bearing capacity of the scenic spot, calculating saturation of the scenic spot, triggering a scenic spot saturation diagnosis system to carry out saturation diagnosis, and providing related strategies and advices for scenic spot managers and tourists. The method has the advantages that the passenger flow volume of the scenic spot can be predicated in real time while saturation estimation of the scenic spot is realized, and the scenic spot managers and the tourists are provided with the related strategies.

The invention discloses a device for automatically identifying and tracking multi-layer and multi-pass welding beads, which belongs to the technical field of welding, and aims at solving the problem that multi-layer and multi-pass welding beads are difficult to identify by the single-stripe structure light in the existing welding method. The device comprises a laser device, a diffraction optical component, an image acquisition system, a control system, a drive system and a welding gun, wherein the laser device emits a cylindrical light into the diffraction optical component; a grid structure light is formed by the light transmitting through the diffraction optical component; the grid structure light enters a welding bead in front of a welding area; the image acquisition system is used for acquiring the grid structure light and welding joint images on the multi-layer and multi-pass welding beads; the acquired data output end of the image acquisition system is connected with the acquired data input end of the control system; the welding gun position and attitude control signal output end of the control system is connected with the welding gun position and attitude control signal input end of the drive system; the welding gun position and attitude control signal output end of the drive system is connected with the welding gun position and attitude control signal input end. The device is used for automatically identifying and tracking the multi-layer and multi-pass welding beads.

The invention provides a water drive development oil reservoir well pattern injection-production relation determination method. The method comprises the steps of a first step of determining injection rate sample data of injecting wells and output sample data of producing wells or a producing well set according to production data of a water injection well in an oilfield and an oil producing well; a second step of performing filtering processing on the injection rate sample data of the injecting wells and the output sample data of the producing wells or the producing well set respectively to determine output responses of the producing wells or the producing well set corresponding to the step change of injection rates of the injecting wells; a third step of determining the injection-production relation of each injecting well and the corresponding producing well or the producing well set according to the output responses of the producing wells or the producing well set corresponding to the step change of the injection rates of the injecting wells. According to the water drive development oil reservoir well pattern injection-production relation determination method, the injection-production relations of water drive development oil reservoirs are estimated according to the injection rates of the injecting wells and the output data of the producing wells, the efficiency is improved, and the problem of the response lag of the producing wells caused by the factors of well spacing and permeability and the like is eliminated.

The invention discloses a hybrid power bus driving condition forecasting method based on an internet of vehicles, and belongs to the technical field of modern transportation. The hybrid power bus driving condition forecasting method is characterized by including steps that real-time vehicle position information and running data are matched and stored; the position information of a vehicle is transmitted in real time, the position information of vehicles around the vehicle is received, and front vehicles which run in the same direction and on the same road with the vehicle and are positioned in front of the vehicle by certain distances are selected; the front vehicles separated from the vehicle within a certain distance transmit historical data to the vehicle; forecasting weights of driving parameters of the front vehicles to the driving condition of the vehicle are determined according to the distances between the front vehicles and the vehicle, and forecast characteristic parameters of the driving condition of the vehicle are computed according to the forecasting weights and characteristic parameters of the front vehicles; the driving condition within a certain distance in front of the vehicle is identified and forecast according to the forecast characteristic parameters of the driving condition of the vehicle and a fuzzy identification model; and control parameters of the vehicle are adjusted by an HCU (hybrid control unit) according to a forecast result. The hybrid power bus driving condition forecasting method has the advantages that lagging of a traditional method is eliminated, forecast accuracy is improved, and accordingly fuel economy and emission performance of the vehicle are improved.

The invention provides a device and a method for controlling surging prediction of a sequential turbocharging system. The device comprises a dynamic pressure sensor, a revolution speed sensor, an air flowmeter, a deflation valve and a surging prediction controller, wherein the air flowmeter and the pressure sensor are respectively arranged at an inlet and an outlet of a gas compressor; the revolution speed sensor is arranged on one side of the gas compressor; the deflation valve is arranged at the outlet of the gas compressor; turbocharging pressure, the revolution speed of a turbocharger and real-time data of air quality and flow parameters are acquired and stored by a data acquiring module, and are transmitted to a prediction preprocessing module; parameter data are transmitted to a grey prediction module and are subjected to grey prediction; a prediction result and actual measurement surging prediction data information are compared to judge whether surging occurs or not; and commands are sent out to adjust the opening of the deflation valve. By the device and the method, a surging phenomenon can be predicted and controlled in an on-line manner quickly and accurately, and the hysteresis of prevention measures is eliminated.

Embodiments of the invention relate to a permanent magnet synchronous motor control method and device based on an angular displacement time-delay-free observer, and aims to improve the position loop response speed of a control system while the angular displacement feedback lag delay generated in a control system angular displacement sampling calculation process is eliminated. According to the angular displacement observation method, an angular displacement observation model is established according to a motion equation of the permanent magnet synchronous motor, and a time-delay-free angular displacement feedback signal is obtained, so that the angular displacement feedback speed of the control system is further improved, and the response capability of the control system is improved.

The invention discloses a solar heat collecting device, comprising at least one heat collecting module, wherein each heat collecting module comprises a hollow container with an inlet and an outlet, a flow controller is arranged between the hollow container and an inlet main pipe and / or an outlet main pipe; each heat collecting module also comprises at least one temperature sensor and / or a light intensity sensor which is in communication connection with a control system and is used for measuring the temperature and / or illuminated light intensity value of the hollow container; and the control system comprises a feed-forward control unit which generates feed-forward regulating signals for regulating each flow controller after analyzing and calculating according to the temperature and / or light intensity value of each hollow container, thereby changing the quantity and / or rate of flow of a heat-absorbing working medium flowing into the corresponding hollow container, and enabling the heat-absorbing working medium at the outlet of each heat collecting module to reach the preset pressure value and temperature value. The solar heat collecting device disclosed by the invention ensures thatthe pressure and temperature of the heat-absorbing working medium at the outlet of each heat collecting module are uniform, control signal lag is eliminated, and the generating efficiency is improved.

The invention provides a webcasting method and a system. According to the invention, the method is performed in this way. Through a main segmenting server deployed at a CDN node and upon obtaining the webcasting requirement transmitted from the CDN node, the method executes the segmentation and distribution of live streaming and at the same time, synchronizes and deploys the sequence numbers of the segmentations into the sequence number storage base in the backup segmenting server deployed at the CDN node. When the backup segmenting server monitors an outage in the main segmenting server, the backup segmenting server executes the segmentation and distribution of live streaming based on the latest sequence numbers contained in its sequence number storage base. This function realizes the smooth switch between the main segmenting server and the backup segmenting server deployed at the same CDN node as well as the synchronization of sequence numbers between the two. As a result, a player is capable of obtaining segmentation of live streaming next after the current segmentation, therefore ensuring a smooth playing process.

The invention discloses a visual tensile testing system, which belongs to the field of mechanical analysis and test on metallic materials. The visual tensile testing system comprises a loading mechanism, a control mechanism, a signal acquisition and measurement mechanism, a visual acquisition mechanism and a data processing mechanism. The visual tensile testing system is characterized in that: the loading mechanism is mechanically connected to the interior of a host frame of a tester by a clamp and a clamping block; the control mechanism is arranged in a host base frame of the tester by a card; the signal acquisition and measurement mechanism is arranged in a slot of a host control card by the card; the visual acquisition mechanism consists of a CCD image acquisition system, an acquisition card, image analysis processing software, an automatic scaling frame and a communication unit; the data processing mechanism comprises a computer and an industrial personal computer; and the industrial personal computer is connected with a host control mechanism by a standard RS232 communication line. In the visual tensile testing system, the tester is utilized to perform dynamic loading on a tensile test specimen, the visual acquisition system acquires the deformation of the test specimen in a scale distance, a strength value channel acquires a strength value, a displacement channel acquires displacement, and the data processing system finishes data processing and performs analysis on tensile mechanical performance to obtain accurate and complete results.

The present invention relates to real-time monitoring method of random loss rate of combine. Feeding sensor, seed collecting amount sensor, seed loss sensor and grain moisture sensor are used simultaneously the acquire loss rate related signals, the signals are regulated, A / D converted and transmitted to computer for processing and analysis, and the results are fed via interface circuit to display and alarm device for the display and alarm of feeding amount, straw / grain ratio, grain moisture, separation loss rate, sorting loss rate and total loss rate. The present invention can measure the random loss rate and monitor the main factors to affect the loss rate and thus the operation state of the combine, so as to ensure the high operation quality of the combine.

The invention discloses a user browsing behavior based personalized recommendation method and apparatus. The recommendation method comprises: obtaining browsing history of a user; analyzing the interests and demands of the user according to each keyword in the browsing behavior history of the user, and realizing dynamic update of user interest and demand through a self-detection function of a keyword counter; and creating a list of recommendation content based on user browsing behaviors, and pushing the recommendation content to the user in a non-disturbing manner through an email. Therefore, the personalized content can be recommended according to the user browsing behaviors.

The invention discloses a blade type hydraulic motor with a rocker arm structure. The hydraulic motor comprises an end cover, an oil distribution disc, a stator, a rotor and a rotating shaft, wherein the rotor is connected with the rotating shaft by a spline; a plurality of blade grooves are uniformly formed on the rotor; two layers of rocker arm beams are arranged in circular grooves at the two ends of the rotor, each layer comprises a plurality of rocker arm beams, holes are formed in the centers of the rocker arm beams; pin shafts pass through the holes to rotationally connect the rocker arm beams with the rotor; circular cavities are formed at the two ends of each blade groove; through holes which are intersected with the circular cavities along the radial direction are formed below the circular cavities; pull rods and springs are arranged in the through holes sequentially; the bottom surfaces of the pull rods are contacted with the arms of the rocker arm beams; blades are arranged in the blade grooves; the bottom ends of the blades are contacted with the springs; the springs are positioned in the circular cavities; an oil circuit is communicated with the circular cavities; grooves are formed on the tops of the blades; and blade heads are inserted into the grooves, are tightly matched with the blades, are higher than the tops of the blades and are contacted with the inner curve surface of the stator. The hydraulic motor has high sealing performance between the blades and the stator, small abrasion during rotation, higher efficiency and longer service life.

The embodiment of the invention discloses a Bluetooth power adjusting method and apparatus, applied to the technical field of information processing. In the method embodiment, when a Bluetooth module of the terminal device sends played audio data to a Bluetooth earphone or vehicle Bluetooth through Bluetooth connection, the terminal device judges whether a time interval of a Bluetooth host module to send the audio data in the Bluetooth format is greater than a preset first time value, and if so, a certain functional parameter, namely the transmitting power of the Bluetooth module is adjusted to eliminate one factor causing blockage or noise or interruption of the audio data received from the Bluetooth earphone or the vehicle Bluetooth.

Belonging to the technical field of hydrometallurgical equipment, the invention relates to an acid adding device with an accurate and automatic pH value control function. The device comprises an acid solution storage tank (2), an acid solution distributor (10) and an acid solution control system. The acid solution distributor (10) is installed inside a reaction container (5). The acid solution storage tank (2) is arranged at a position higher than the acid solution distributor (10), and is in connection with the acid solution distributor (10) through a hand stop valve (4), an electric butterfly valve (6), an infusion tube (7) and a movable sleeve (8) in order. By employing an advanced on-line real time control technology, the device provided in the invention generates no acid fog while adding a high concentration acid solution, and has the advantages of high pH value control precision, low labor intensity, simple structure and reliable operation.

The invention provides a garbage incinerator control system. The system comprises an incinerator and an automatic control module, wherein a data acquisition module is arranged on the incinerator and used for collecting combustion condition data related to control parameters of the incinerator, and the combustion condition data characterizes combustion conditions of the incinerator; the automatic control module performs collaborative optimization on at least two control parameters of the incinerator according to the combustion condition data to obtain optimized control parameters and automatically controls the incinerator according to the optimized control parameters. The garbage incinerator control system achieves the purposes of intelligence and adaptability of the incinerator and has theeffects of saving energy, increasing efficiency and improving operating economy.

The invention provides a device for measuring thickness of a zinc layer in a continuous hot galvanizing machine set. The continuous hot galvanizing machine set comprises an air knife, a slewing roller and a tension roller, wherein the air knife is used for performing galvanizing treatment on a steel strip, and the slewing roller and the tension roller are used for outputting the steel strip afterbeing galvanized and cooled. The device for measuring the thickness of the zinc layer comprises a length encoder, a zinc layer thickness gauge, a steel strip length monitoring device and a zinc layercontrol parameter storage device, wherein the length encoder is arranged on the tension roller and is used for counting the length of the steel strip; the zinc layer thickness gauge is arranged behind the slewing roller and is used for measuring the thickness of the zinc layer; the steel strip length monitoring device is respectively connected with the length encoder and the zinc layer thickness gauge; and the zinc layer control parameter storage device is connected with the steel strip length monitoring device. The device and method for measuring the thickness of the zinc layer, provided by the invention, can be used for realizing the accurate correspondence between the thickness of the zinc layer on a specific position of the steel strip and other parameters used for controlling the thickness of the zinc layer on the position.

The embodiment of the invention, which is applied to the technical field of information processing, discloses a parameter adjusting method of terminal equipment and terminal equipment. When a aluetooth module of the terminal equipment sends played audio data to a bluetooth headset or bluetooth vehicle-mounted unit by bluetooth connection, the terminal equipment determines whether a time interval for sending audio data by the bluetooth host module to a bluetooth control module in the bluetooth format is larger than a preset time value; if so, a certain functional parameter being a scanning parameter of another wireless communication module sharing a channel with the bluetooth module is adjusted, thereby eliminating a factor causing interruption, noises or breaking of audio data received from the bluetooth headset or bluetooth vehicle-mounted unit.

Systems are provided for EGR mass and air mass estimation during steady state and transient operations. By utilizing a combination sensor comprising of a manifold absolute pressure sensing element and a differential pressure sensing element sharing a common pressure chamber with connections to the intake manifold, errors in EGR mass estimation may be reduced.

The invention discloses a battery pack thermal management method and device, a storage medium and an electronic device. The method comprises the following steps of acquiring the current temperature ofa battery pack and the working state information of the battery pack; determining the maximum working power information of the battery pack according to the current temperature and the working stateinformation; inputting the maximum working power information, the current temperature and the working state information into a battery model assembly to obtain the heating temperature of the battery pack; judging whether the sum value of the heating temperature and the current temperature is smaller than a preset first temperature threshold value or not; and if the sum value of the heating temperature and the current temperature is smaller than the preset first temperature threshold value, determining the energy required for heating the battery pack according to the heating temperature, and starting the heating assembly, so that the heating assembly heats the battery pack according to the energy required for heating. According to the technical scheme, the heating temperature of the internal resistance is considered, and the obtained required heating or cooling energy is more accurate, so that the energy is saved.

The present invention relates to a method and apparatus for performing motion adaptive frame averaging for ultrasound color flow images used to overcome lag and smearing alias of color due to motion. One embodiment of the present invention comprises an ultrasound machine for generating an color flow imaging responsive to moving tissue. The ultrasound system comprises a front end and at least one processor. The front-end is arranged to transmit ultrasound waves into the moving tissue, generating received signals in response to the ultrasound waves backscattered from the moving tissue. The processor is responsive to the received signals, calculating a motion factor by comparing at least one current b-mode frame with at least one previous b-mode frame, determining motion using at least the motion factor, increasing a level of frame averaging if the motion factor is below a first predetermined threshold, and decreasing the level of frame averaging if the motion factor is above a second predetermined threshold.

The drive control device of the stepping motor of the present invention feedback-controls the stepping motor according to the coded signal output by the encoder, and is characterized in that it is provided with: a counter for the number of instructions, through which the number of driving pulses given to the stepping motor Counting is performed to obtain a count value of the number of instructions; a signal counter is used to obtain a signal count value by counting the number of pulses of the encoded signal; During the specified action, when the hysteresis state occurs where the count value of the instruction count is inconsistent with the count value of the signal × C (C is a predetermined positive constant), the stepping motor is operated in a specific mode of operation. The driven system is driven down, and the hysteresis of the driven system is eliminated.

The invention relates to a double-drive device for a cutting robot and a control method thereof. The double-drive device comprises a right pedestal guide rail, a left pedestal guide rail, a right cross beam bracket, a left cross beam bracket, a cross beam and a PLC control unit, wherein the left and right cross beam brackets are provided with left and right servo motors respectively; the PLC control unit is electrically connected with the left and right servo motors respectively; encoder units on the left and right servo motors are electrically connected with the PLC control unit; the encoder units on the left and right servo motors transmit current coded disc values to the PLC control unit and compare the coded disc values; the PLC control unit is provided with an alarm; and when the difference value is more than or equal to a threshold pre-stored in the PLC control unit, the alarm sends an alarm message to pause the work of the left and right servo motors. The device and the method radically eliminate the lag due to movement of the rail on one side by keeping the two servo motors in synchronous movement so as to eliminate the oscillation. The alarm on the double-drive device can alarm for positional deviation of the two servo motors.

The invention discloses a method for generating dynamic data of a dynamic seat based on video processing. The method comprises the following steps of identifying an image of a film video, and selecting a plurality of feature points of any feature objects on the image as required; tracking the position change of all the feature points through a video processing algorithm by utilizing a computer; calculating and obtaining a movement parameter and a movement trail of a virtual camera through video processing algorithm according to the position change of the feature points; calculating and obtaining the practical movement trails and movement parameters of the feature objects through the video processing algorithm according to the movement parameter and the move trail of the virtual camera; generating the dynamic data of the dynamic seat according to the practical movement trails and the movement parameters of the feature objects. By means of the method for generating dynamic data of the dynamic seat based on video processing, automatic generation of the dynamic data is almost achieved, generation efficiency of the dynamic data is greatly improved, accuracy of the dynamic data obtained through the method is obviously improved, and the method can eliminate the hysteretic property of the dynamic data.

The invention discloses an assisting power control device and method of an electro-hydraulic composite steering system. Assisting power provided by the electro-hydraulic composite steering system is supplied by an electric assisting power module and an electric hydraulic assisting power module. The assisting power control device obtains driver ideal steering wheel torque by the adoption of a comprehensive road feeling intensity evaluation method combined with a steering wheel angle gradient and torque and according to a vehicle steering wheel angle, a torque signal, a vehicle speed signal anda vehicle lateral acceleration signal, the characteristic that an electric assisting power response is made accurately and quickly is used, the electric assisting power module provides an extra compensation moment for tracking, the problem existing in electro-hydraulic composite system steering road feeling consistency is solved, and the driver ideal steering road feeling requirement is met.