233results about How to "Avoid lag" patented technology

In a system for animating an object along a music, a sequencer module sequentially provides music control information and a synchronization signal in correspondence with the music to be played. A parameter setting module is operable to set motion parameters effective to determine movements of movable parts of the object. An audio module is responsive to the synchronization signal for generating a sound in accordance with the music control information to thereby play the music. A video module is responsive to the synchronization signal for generating a motion image of the object in matching with progression of the music. The video module utilizes the motion parameters to basically control the motion image, and utilizes the music control information to further control the motion image in association with the played music.

A user device presents media to a user in the form of multiple content items, each comprising media components such as videos, text, and images. The user device uses user data and information about a set of content items accessed by the user to predict an order in which the user will access the content items. The user device requests, in the predicted order, media components associated with a number of content items to prepare the content items for presentation to the user. Responsive to detecting a transition between a presentation of a first content item and a presentation of a second content item, the user device may re-prioritize a predicted access order for the content items. The user device may additionally request media components to download according to quality levels. For example, a slow network connection may prompt a user device to use lower resolution video.

In order to minimize the delay of the video images viewed by a network conference attendee, an intelligent buffering process (IB process) selectively discards video frames from at least one point, and in an embodiment, many network points, such as at “in” and / or “out” buffers of clients, servers, routers, etc. Packets of video frame data arrive at a buffer, which can fill to a predetermined limit if the packets cannot be forwarded due to delays or slow connections. To forward the most current video images, old frames in the buffer are discarded rather than forwarded. In a particular embodiment, when the buffer is full, the next arriving delta frame packet is discarded. To avoid distortion, each subsequent delta frame is discarded until a new key frame eventually arrives. If the buffer is still full when the key frame arrives, the buffer is purged and the new key frame is added.

The invention discloses an embedded real-time system proceeding equalization dispatching method which ensures not only the completeness integrity of disposed entity of each process massage grade but also timely process the linkage massage in process. The method comprises: the process scheduling entity sets scheduling threaholding for each process to control the number of massage and process time each times, during processing process internal massage, the process scheduling entity invokes another process to process if the number of processed massage and process time achieve or exceed the scheduling threaholding. The method can ensure the process with identical PRI timely and safely invoke and process massage, and prevent massage lagging and protocol state transition caused by process non-real time scheduling.

An object is to provide a flow control valve that is capable of reducing or eliminating backlash generated between a male threaded portion and a female threaded portion engaged with the male threaded portion and preventing or eliminating hysteresis in the flow level. The flow control valve includes a body having a fluid inlet and a fluid outlet, a cover attachable to the body, a motor disposed in a space defined by the body and the cover, a valving element connected to a rotary shaft of the motor with a screw member, and an urging member that urges the valving element toward the motor side or toward the side opposite to the motor.

Disclosed is a downhole flow measuring while drilling device capable of measuring downhole annular flow, annular pressure and annular temperature and monitoring early overflow while drilling. The measuring device measures downhole annular flow and flow change through an ultrasonic wave sensor mounted at a short section of a drill collar and measures annular pressure and annular temperature through a pressure and temperature sensor mounted inside an annular fluid guiding device, a power source and a circuit board are mounted inside an exploring pipe, physical signals, such as annular flow, pressure and temperature, are converted into electric signals through the sensors, the measuring device records, stores and uploads data through the circuit board, and the measuring device is connected with a MWD (measurement while drilling) through an MWD joint to timely upload actually-measured data to the ground. The device is simple in structure, low in manufacturing cost and long in service life, and working conditions such as downhole overflow can be judged in real time by comprehensively analyzing and processing timely-uploaded downhole data and related data on the ground to achieve the objective of early overflow monitoring, so that safety of well control of well drilling is effectively improved.

The invention discloses an on-line estimation early warning method for an SOH (State Of Health) of an electric vehicle battery pack. The method comprises the following steps: S1, measuring initial maximum capacity of each single battery; S2, acquiring real-time charge and discharge current of each single battery by using a battery management system and estimating an SOC value before and after charge and discharge of each single battery; S3, calculating the SOH value after each charge and discharge of each single battery; S4, judging whether the single battery of which the SOH value is smaller than a first preset threshold value exists in the battery pack, executing a step S6 if the single battery exists, and otherwise, executing a step S5; S5, calculating an average value of the SOH values of all single batteries in the battery pack, judging whether the single battery of which the SOH value differs from the average value for more than a second preset threshold value exists in the battery pack, executing a step S6 if the single battery exists, and otherwise, returning to execute the step S1; S6, triggering the battery management system to enter a protection state and emitting alarm. The method has the advantages of high real-time property, high accuracy, simple implementation mode and low cost and can be widely applied to the monitoring field of the battery pack.

The invention relates to screw thread automatic detecting equipment and a method thereof; the main frame of the equipment is a fixing frame, a screw thread detecting pin is driven by a working air cylinder fixed at the center of the outer part of the top side to move downwards to carry out detection, a product detecting fixture is arranged on a base of the fixing frame, and the position of a screw thread hole of the product to be detected is arranged right below the screw thread detecting pin; a sensor is arranged at one side of the screw thread detecting pin, the front end part of the sensor is vertical to the screw thread detecting pin and is arranged at a distance from the screw thread detecting pin, the sensor is triggered to carry out detection by the insertion of a screw thread detecting rod at the front end of the screw thread detecting pin or by different working states generated by preventing from moving downwards. The equipment fully utilizes the difference of pore diameter of an extruding and tapping product before tapping and after tapping to carry out judgment and identification, and full-inspection identification and marking are automatically carried out by the equipment, thereby being beneficial to realizing assembly line work, avoiding changing or lagging the production flow, reducing the risk on producing defective products in the process and having remarkable economic benefit.

The invention relates to a quality of experience (QoE) monitoring and optimization method for adaptive code rate video direct broadcast, and belongs to the technical field of digital videos. The method comprises the steps that: based on an HAS direct broadcast system, a server continuously monitors a code rate change situation of a client; when the code rate of the client is changed, the delta T time length of a slice is reduced, otherwise, the delta T time length is increased, and a slicing tool is notified to perform slicing according to the increased or reduced time length of the slice; and no matter whether the time length is reduced or increased, the final time length of the slice should be within a range of [Min, Max], wherein Min represents preset shortest time, and Max represents preset longest time. Compared with the prior art, an encoder and the slicing tool can cut a direct broadcast stream into variable time length segments (VTS), and the length of the slice can be changed as feedback of a fluctuated loading rate, so that delay jamming caused by frequent code rate switching is effectively avoided and the QoE of users on video business is improved.

The invention discloses a production line management control system which comprises a main server, public hosts, RFID systems and a PLC. Each production line is provided with one public host, and the public hosts communicate with an LED electronic display panel; each RFID system comprises an RFID reader-writer and an RFID electronic tag, each RFID system is arranged between every two adjacent machining procedures on each production line, the RFID reader-writers read data information in the RFID electronic tags and transmit the data information to the public hosts, then the public hosts process the received data information and transmit the processed data information to the LED electronic display panel for displaying, and the public hosts on the production lines communicate with the main server; the PLC is used for controlling communication between the public hosts and the RFID systems and communication between the LED electronic display panel and the main server. By means of the production line management control system, the production lines are informationized, and visualization and real-time performance of production data are achieved.

The invention discloses a fuel cell air supply system. The fuel cell air supply system comprises a fuel cell pile used for performing power generation through an electrochemical reaction, an air compressor used for conveying air to the fuel cell pile, a motor used for driving the air compressor to work, an electric power conversion apparatus used for regulating the electric power supplied to the motor, a temperature regulation apparatus and a humidity regulation apparatus used for regulating the temperature and humidity of the supplied air to satisfy target parameters, a sensor assembly used for measuring the pressure, temperature, humidity and flow of the supplied air, and the rotary speed of the air compressor, a bypass branch used for discharging the residual air in the flow, a bypass valve used for controlling the starting area of the bypass branch, an air filtering apparatus used for filtering impurities from the supplied air, and a controller used for controlling operation of each module. By taking a negative electrode air inlet system as one integrated body to perform independent consideration and control, air with the most suitable parameters is supplied to the fuel cell pile accurately.

In order to minimize the delay of the video images viewed by a network conference attendee, an intelligent buffering process (IB process) selectively discards video frames from at least one point, and in an embodiment, many network points, such as at “in” and / or “out” buffers of clients, servers, routers, etc. Packets of video frame data arrive at a buffer, which can fill to a predetermined limit if the packets cannot be forwarded due to delays or slow connections. To forward the most current video images, old frames in the buffer are discarded rather than forwarded. In a particular embodiment, when the buffer is full, the next arriving delta frame packet is discarded. To avoid distortion, each subsequent delta frame is discarded until a new key frame eventually arrives. If the buffer is still full when the key frame arrives, the buffer is purged and the new key frame is added.

The present invention discloses an agricultural machinery automatic navigation control method based on a double-antenna GNSS (Global Navigation Satellite System) and a preview tracking model. According to the method, a clock-shared integrated dual-antenna GNSS receiver supporting multi-satellite system carrier phase difference technique is used for performing positioning and attitude measurement of agricultural machinery; and a piecewise adaptive foresight distance related to speed is adopted as a parameter in a preview tracking model, so that path tracking control can be performed on the agricultural machinery. A positioning board card supporting the multi-satellite system carrier phase difference technique can effectively increase the number of satellites participating in positioning calculation and improve the precision and stability of navigation and positioning; navigation satellite system-based inertial navigation attitude measurement can improve the accuracy and real-time performance of the attitude measurement of the agricultural machinery; the design and simulation of driving behaviors of a user by the preview tracking model algorithm have predictability, and therefore, a path tracking control effect is good, the quickness and stability of the launch of the agricultural machinery and the adaptability of the agricultural machinery to compacted field road conditions can be improved; and the foresight distance is related to speed, and therefore, the control accuracy and stability of an agricultural machinery automatic navigation system in relatively high-speed operation can be improved.

The invention provides a robot vibration suppression method based on an acceleration sensor. The robot vibration suppression method comprises the steps that robot track pre-operation is executed, specifically, the three-shaft acceleration sensor is mounted at the tail end of a robot, and vibration signals in three directions in the mounting position during pre-operation of the robot are collected; vibration parameters of the industrial robot are extracted according to the collected vibration signals; an input forming device is designed according to the obtained vibration parameters; and the input forming device acts on the operation track of the industrial robot so as to correct the operation track of the industrial robot through the input forming device. Through the method of applying input shaping to the industrial robot, the problems that input shaping parameters are difficult to obtain, and shafts move asynchronously due to the input shaping time lag are solved, vibration of the industrial robot can be suppressed, and track precision and positioning precision are improved.

The invention relates to a battery pack cooling control method, an apparatus and a battery pack thereof. The battery pack cooling control method comprises the following steps: obtaining the current temperature Tbat of a battery; determining a battery heat power Pb, a heat-exchange power Pc of the battery by environment, and a battery temperature-reduction power Pt, and calculating a battery cooling power P according to the battery heat power Pb, the heat-exchange power Pc of the battery by environment, and the battery temperature-reduction power Pt; determining a liquid coolant flow velocity Mc of the battery cooling power P; calculating the request inlet coolant temperature according to the battery cooling power P and the liquid coolant flow velocity Mc. The method takes regard of the influence of the current temperature on the battery, and takes regard of influence of the heat power of the battery and the heat-exchange power the battery by environment, feedback control and anticipatory control are combined, defect of cooling control lag can be prevented, temperature fluctuation of the battery pack can be reduced, temperature stabilization of the battery pack can be kept at a maximum degree, and real-time cooling control is realized.

The utility model provides a two-parameter micro-vibration active and passive vibration isolation platform and a system. The two-parameter micro-vibration active and passive vibration isolation platform comprises an end cover, a first bellows, a second bellows, a damping hole connecting piece, a flange connecting sleeve, a flange tail end, a piston, a buffer protection cover and a damping hole, wherein the inner side end of the end cover, the first bellows, the damping hole connecting piece, the second bellows and the inner side end of the flange tail end are sequentially connected; the damping hole penetrating through the two ends of the damping hole connecting piece is formed in the damping hole connecting piece; the first bellows and the second bellows store viscous liquid. A two-parameter vibration isolator is formed from damping generated by the bellows and the viscous liquid, the formant amplitude can be reduced under the condition that the maximum damping is obtained, friction and delaying in the vibration isolation process are effectively avoided, the low-frequency longitudinal movement of the platform is controlled, and the defect of passive vibration isolation is overcome. The two-parameter micro-vibration active and passive vibration isolation platform has the advantages of being light in weight, good in trial assembly and simple in design and can meet quality restriction and requirements on vibration isolation frequency.

An in-port sequencing valve configured to be utilized with a clamping device of a workpiece clamping system having a fixture plate, a number of fixture datums, and a number of clamping devices. The in-port sequencing valve includes a housing, a pre-load adjuster, a valve spring, and a valve piston. The pre-load adjuster is configured to be set to a selected valve activation setting. The valve spring is compressed an amount corresponding to the valve activation setting. The valve piston is configured to be shifted from a closed position to an open position when a force due to hydraulic fluid pressure overcomes a threshold spring force of the valve spring corresponding to the valve activation setting. The in-port sequencing valve can be set to a selected valve activation setting so that the clamping devices clamp the workpiece in a selected order according to the valve activation setting.

The embodiment of the invention discloses a breeding management system. The system comprises an information acquisition module, an information processing module and a decision supporting module, wherein the information acquisition module is used for acquiring breeding field information; the information processing module is electrically connected with the information acquisition module and used for comparing the breeding field information with breeding reference data to obtain a data analysis result; and the decision supporting module is electrically connected with the information processing module and used for generating a dispatching control command according to the data analysis result obtained from the information processing module so as to control the breeding field information. Correspondingly, the embodiment of the invention also discloses a breeding management method. Due to the adoption of the system and the method, information management can be performed on a livestock breeding site, a livestock breeding and producing process can be standardized and monitored effectively, information acquisition reliability and correctness are ensured, overall production process information of each livestock breeding site is grasped in time, abnormal conditions can be analyzed in real time, alarm of the abnormal conditions is made and effective expert system support is provided for the site.

The invention discloses a user off-line detection method and a user off-line detection system. The method comprises: a mobile terminal corresponding to each member in a group sends a heartbeat data packet to a server at a first preset time interval; when the server receives the heartbeat data packet sent by one mobile terminal each time, a user record is established for the mobile terminal sending the heartbeat data packet and counting is started, wherein the user record includes expiration time that is a sum of first current time and second preset time and the second preset time is larger than the first preset time; if the server receives an operation instruction sent by the mobile terminal sending the heartbeat data packet within the expiration time, second current time is obtained and the expiration time is updated by using the second current time, wherein the expiration time is a sum of the second current time and the second preset time; and if the server does not receive a heartbeat data packet or an operation instruction that is sent again by the mobile terminal sending the heartbeat data packet within the updated expiration time, the member is determined to be in an off-line state.

An object is to provide a flow control valve that is capable of reducing or eliminating backlash generated between a male threaded portion and a female threaded portion engaged with the male threaded portion and preventing or eliminating hysteresis in the flow level. The flow control valve includes a body having a fluid inlet and a fluid outlet, a cover attachable to the body, a motor disposed in a space defined by the body and the cover, a valving element connected to a rotary shaft of the motor with a screw member, and an urging member that urges the valving element toward the motor side or toward the side opposite to the motor.

An imaging device includes a solid state imaging element that includes a plurality of pixels; and a driving unit; wherein each pixel includes: a photoelectric converting element includes a pair of electrodes stacked above a semiconductor substrate and a photoelectric converting layer arranged between the electrodes; a connecting portion that is arranged in the semiconductor substrate; a potential barrier portion; a first charge accumulating portion; and a signal output circuit, and wherein the driving unit executes such a same potential driving that the connecting portion and the potential barrier portion are set to have a same potential by varying the potential of the potential barrier portion.

The invention relates to a method for monitoring operation vehicles of a third party logistics forwarding agent by an enterprise logistics department, in particular to a method for monitoring third party logistics vehicles by GPS. The invention provides the method for monitoring third party logistics vehicles by the GPS, which performs centralized dispatcher, monitoring and commanding on the vehicles provided with GPS terminal products of different GPS operation service providers. By applying the method, the enterprise logistics department can monitor and manage the vehicles provided with different GPS terminals on the same monitoring platform, can monitor information about temperatures, tracks and the like of carriage vehicles in real time, and also can assign tasks to the logistic forwarding agent through a system, while the logistic forwarding agent can automatically receive the tasks, arrange vehicles and give feedback in real time through the system, so the communication efficiency of an enterprise and the logistic forwarding agent is improved, the enterprise can know and monitor the carriage vehicles in time, the management efficiency of the enterprise is improved, and the management cost of the enterprise is saved.

The invention belongs to the field of heat supply automation control, and in particular, relates to a heating network hydraulic balance adjusting method and system based on heating station resistancecharacteristics. The heating network hydraulic balance adjusting method based on the heating station resistance characteristics comprises the steps that a global coordination system is set; actual values of all heating station resistance characteristic coefficients are locally analyzed; target values of all the heating station resistance characteristic coefficients are calculated through the global coordination system, and control policies are generated; and the heating network hydraulic balance is adjusted online according to the control policies and the actual values to realize the hydraulicbalance adjustment based on the resistance characteristic coefficients; and due to the characteristic of no coupling influence of the resistance characteristic coefficients from other heating stationadjustment, the hysteresis and oscillation problems in the hydraulic balance adjustment can be effectively prevented, and the quick adjustment of the heating network hydraulic balance is realized.

A production device for a DLC film-coated plastic container and a production method therefor, capable of forming DLC (diamond-like carbon) films simultaneously on the inner surfaces of a plurality of plastic containers, and reducing variations in film thickness. A production device for DLC film-coated plastic containers, for forming a plurality DLC films simultaneously, characterized by comprising a columnar external electrode (3) having housing spaces in which a plurality of plastic containers (7a-7d) can be disposed in parallel and independently, internal electrodes (9a-9d) respectively disposed in the housed containers (7a-7d), a matching box (14) connected to the external electrode (3) and impedance-matching a high-frequency load, and a high-frequency power supply (15) connected to the matching box.

The invention discloses a least square method support vector machine-based generalized prediction method in a lysozyme fermentation process. The prediction method comprises the following steps of establishing a non-linear prediction model, and training a least square method support vector machine by using production data with higher yield screened from tank fermentation; performing real-time linearization on the input and output non-linear prediction model, setting a reference trajectory, rolling-optimizing controller design, and intelligently embedding an LS-SVM (least square-support vector machine)-based generalized prediction control algorithm in the lysozyme fermentation process into an upper computer. According to the method, the least square method support vector machine and the generalized prediction control are combined, so the QP problem of time consumption of solving in the solving process with the model is avoided, the operation is simple, the convergence speed is speed, and the precision is high. A genetic algorithm and the rolling optimizing in the generalized prediction control are combined, so the robustness of a system is enhanced, and the lag and disturbance of the system are effectively overcome.

The invention provides a gear shifting control method and device for a pure electric mode of a hybrid electric vehicle which belongs to the technical field of vehicles, and solves the problem that inthe prior art, the power interruption time is long during gear shifting. The gear shifting control method for the pure electric mode of the hybrid electric vehicle comprises the steps of when it is judged that a target gear is inconsistent with a current gear according to the real-time working condition information of the vehicle, entering a gear shifting mode; unloading the torque of a driving motor to zero; enabling a synchronizer to be disengaged from the current gear to a neutral gear; when the synchronizer is disengaged to the synchronization point of the current gear, sending out a speedregulation instruction signal through a gearbox controller; using a motor controller to control the driving motor to adjust the speed, and when the rotating speed of the driving motor reaches the target rotating speed, unloading the torque of the driving motor to zero; and enabling the synchronizer to enter the target gear, and recovering the torque of the driving motor to the target torque. Theinvention further provides a gear shifting control device for the pure electric mode of the hybrid electric vehicle. According to the invention, the gear shifting power interruption time in the pure electric driving mode can be shortened.

The invention discloses a multi-source data based grid fault positioning and analysis report automatic generating method, which is characterized in that fault recognition and fault accurate positioning are performed by comprehensively utilizing EMS (Energy Management System) information, relay protection and fault information and travelling wave distance measuring information, visualized display and alarming can be performed on a grid fault, and the grid operation and maintenance personnel are notified timely through a short message alarm platform. Meanwhile, a detailed grid fault tripping analysis report is automatically generated by comprehensively utilizing a line lean system, a lightning monitoring system, an icing monitoring system, a multispectral mountain fire monitoring system, a typhoon monitoring system and the like. According to the invention, a grid fault can be positioned quickly and accurately, and fault information is automatically sent to the grid maintenance personnel through the short message platform, thereby saving the time for quick recovery of the grid fault, and improving the work efficiency of the grid maintenance personnel. The multi-source data based grid fault positioning and analysis report automatic generating method provided by the invention avoids time delay brought about by manual filling and reporting, and saves the labor cost.

The invention relates to an unmanned aerial vehicle staged autonomous landing method based on visual information fusion. The method includes the following steps of 1) landmark making: taking a corresponding target landing point on the unmanned ship as a landmark, attaching an AprilTags label to the landmark, and adjusting the angle of the unmanned aerial vehicle camera; 2) image processing: according to the parameter information of the camera and the image information captured by the camera, acquiring the relative pose Xct between the camera and the landmark when the landmark is found; 3) information fusion: performing information fusion on the relative pose Xct between the camera and the landmark and the measurement data of the IMU, and acquiring the real-time relative pose Xvs of the unmanned ship under the unmanned aerial vehicle reference system; 4) motion control: ensuring flight stability and path tracking according to the real-time relative pose Xvs in a nested control mode, atthe same time, landing by adopting a staged landing method. Compared with the prior art, the method has the advantages of being effective and real-time, avoiding lag, and being stable and safe.

The invention discloses an automated control system for a central air-conditioning system. The automated control system comprises multiple air openings and control modules, wherein each control module corresponds to the corresponding air opening. Each control module comprises an air direction module, an air volume module, an air exchange module, a refrigeration module, a heating module, a humidity module and a disinfection module. Each air opening comprises multiple vanes which are oriented in multiple different directions outwards. A temperature sensor is arranged at the periphery of each vane in a one-to-one-correspondence manner. According to the automated control system for the central air-conditioning system, firstly, the multiple vanes are arranged on each air opening, air can be blown in different directions, in addition, the air outlet angle is adjusted according to the temperature conditions at different positions, refrigeration or heating efficiency is changed, and the automated control system is adapted to different indoor environmental conditions; secondly, the carbon dioxide content, the air volume and the refrigerating capacity or heating capacity is pre-adjusted, and hysteresis is prevented; and finally, the humidity can be effectively adjusted, and the air is effectively disinfected and purified.

The invention discloses an automatic magnetic strip passing machine. The automatic magnetic strip passing machine comprises a rack and a magnetic strip tractor, wherein the magnetic strip tractor is positioned on the rack, a magnetic strip passes through a guide rod, a pressing wheel and the magnetic strip tractor in sequence, the magnetic strip tractor comprises two conveying machines respectively including an upper conveying machine positioned on the top and a lower conveying machine positioned at the bottom, an upper guide groove is formed in one surface, which is opposite to the lower conveying machine, of the upper conveying machine, a lower guide groove which is opposite to the upper guide groove is formed in the lower conveying machine, a conveying belt of the upper conveying machine is arranged in the upper guide groove, a conveying belt of the lower conveying machine is arranged in the lower guide groove, the magnetic strip is positioned in a gap formed by the conveying belts of the upper conveying machine and the lower conveying machine and is clamped to move forward by the conveying belts of the upper conveying machine and the lower conveying machine, and the gap is positioned in the upper guide groove or the lower guide groove. According to the automatic magnetic strip passing machine, whether the magnetic force of the magnetic strip is qualified can be automatically detected, the traction of the magnetic strip does not slip, the cutting length of the magnetic strip is accurate, the qualified rate of products is increased, and the cost is reduced.