199results about How to "Taking into account stability" patented technology

The invention relates to a system start-up technology in the field of data communication, and discloses a main / back-up embedded type bootstrap start-up method, and the method solves the problems that in a traditional technology, two pieces of norflashes are adopted to store a main bootstrap and a back-up bootstrap respectively, the cost is high, two pieces of nandflashes are adopted to store the main bootstrap and the back-up bootstrap respectively, and stability is poor. The method includes the steps that a, device electrifying is conducted, and a system reads and loads the main bootstrap from the nandflashes; b, the system judges whether loading is successful or not, if yes, a procedure is ended, and if not, step c is entered; c, a device is restarted, and the system reads and loads the back-up bootstrap from the norflashes. The main / back-up embedded type bootstrap start-up method and system are suitable for starting up the embedded device.

The invention relates to a microbial carrier and a preparation method thereof. The microbial carrier is a hydrogel which can interpenetrate the network and is prepared by polymerization equipment; an interpenetrating network structure of the hydrogel comprises a main body network part and an interpenetrating part, wherein the main body network part is formed by water-soluble monomers through radical polymerization; and the interpenetrating part exists by macromolecules with interaction radicals in a linear or cross-linking form and respectively forms a full-interpenetrating network and a half-interpenetrating network. The compression ratio of the microbial carrier with the interpenetrating network structure in the embodiment of the invention can reach 95 percent. The microbial carrier is simple, convenient and feasible to embed microorganism. The obtained microorganism has stable quality and excellent activity and diffusivity.

The invention relates to an amphibious robot, in particular to an amphibious robot with integrally-driven wheel paddle legs. The amphibious robot comprises a front buoy, a middle-front buoy, a watertight electronic cabin, a middle-back buoy, a back buoy, a frame and wheel paddle leg driving modules, wherein the front buoy, the middle-front buoy, the watertight electronic cabin, the middle-back buoy and the back buoy are sequentially arranged on the frame; the frame is provided with a plurality of groups of wheel paddle leg driving modules; two wheel paddle leg driving modules are combined into one group and are symmetrically arranged at two sides of the frame; each wheel paddle leg driving module comprises a wheel paddle leg direct driving joint and a rotary joint, and the wheel paddle leg direct driving joint is rotatably connected with the rotary joint. By adopting three groups of symmetric wheel paddle leg driving modules, the requirement of multiple movement modes of crawling and floating of the robot under the amphibious conditions is met, stability, quickness and harmony of movement of the robot are realized at the same time, and the amphibious robot has the advantages of flexible movement, strong environment adaptation, outstanding obstacle-detouring ability and the like.

The invention discloses an odd-finding-recommendation-oriented interest model updating method, which is used in a portal personalized recommendation service system; the invention is characterized in that: the odd-finding-recommendation-oriented interest model updating method comprises a long-term interest model modification rule LMR, a long-term interest model update rule LUR, a short-term interest model structure / update rule SUR, and an interest drifting detection rule IDR. The user interest model updating method of the invention can partly update interest description of the user, obtain the short-term interest situation of the user easily, satisfy the need of the odd finding recommendation, and realize the efficient and accurate updating of a user interest model; and moreover, the method can identify and process noise data, and avoid influences of the noise data on the stability of the user interest model when quickly responding to interest drifting at the same time. The updating method of the invention can identify and process the noise data, thus improving the accuracy and the stability of the user interest model.

The present invention provides a road crossing signal dynamic regulation method based on online traffic simulation. The method comprises: calculating the current traffic operation parameters in the current signal timing scheme according to the current traffic flow data; performing signal optimization timing calculation according to the current signal timing scheme and the traffic data, and obtaining an optimized signal timing scheme; performing traffic simulation aiming at the optimal signal timing scheme, and obtaining simulated and outputted traffic operation parameters; and finally, comparing the simulated traffic operation parameters with the current traffic operation parameters, if the simulated traffic operation parameters exceed a presetting threshold, outputting the optimal signal timing scheme, and performing road crossing signal timing through adoption of the optimal signal timing scheme. The road crossing signal dynamic regulation method, device and system are able to provide different signal timing schemes for signal lights at the crossing aiming at road traffic flow at different time periods so as to improve the passing efficiency of a crossing and ensure that the crossing is able to operate in the optimal mode all the time in the condition that the road crossing operates at the optimal timing scheme.

The invention discloses a variable transmission ratio optimization design method of a multi-mode drive-by-wire power steering system and a special system thereof. The method comprises the following steps: 1) establishing a drive-by-wire power steering system dynamic model; 2) establishing road feel and sensitivity evaluation indexes of the steer-by-wire system; Step 3) starting to increase progressively at the speed of 25km / h, and setting 10 groups of vehicle speeds; 4) taking the steering transmission ratio as an optimization variable, determining the transmission ratio under the fixed yaw velocity gain and the fixed lateral acceleration gain according to the automobile parameters and the automobile speed, taking the transmission ratio as a design space of the transmission ratio, and taking the steering road feel and the steering sensitivity as optimization objectives to establish a multi-objective optimization model; Step 5) According to the transmission ratio optimization result, adopting the smooth curve to perform fitting to obtain an optimized design result. According to the transmission ratio optimization method of the steering system, through further optimization design ofthe transmission ratio of the steering system, the road feel and sensitivity of automobile steering are considered, the comprehensive performance of the steering system can be effectively improved, and the driving experience of a driver is improved.

The invention discloses a supercritical unit coordinated predictive function control algorithm. It is difficult for a conventional PID control system to consider the rapidity of load and stability of pressure and temperature at the same time, the quality of a coordinated control system needs to be improved. According to the supercritical unit coordinated predictive function control algorithm, predictive function control is applied to a pressure closed loop of a supercritical unit coordinated control system, a main steam pressure predictive function control system is formed. A control valve instruction and a coal quantity instruction are taken as a disturbance signal source of the whole pressure system. The predictive function control is applied to a temperature control loop of the supercritical unit coordinated control system, and an overhigh temperature prediction function control system is formed. A water supply instruction is taken as a disturbance signal source of a whole temperature system. According to the supercritical unit coordinated predictive function control algorithm, the control quality of the supercritical unit coordinated system is improved, and the rapidity of load and stability of pressure and temperature are considered at the same time.

The invention provides an electronic parking system and an electronic parking redundancy brake control method, which comprises the following steps: a controller is integrated with an electronic parking control unit and an automatic driving control unit which work independently; Two electronic parking brakes respectively arranged on two front wheels of the whole vehicle; Four wheel speed sensors ontwo front wheels and two rear wheels of the vehicle; the electronic parking control unit is connected with an electronic parking switch through a communication line, and the electronic parking brakeand the wheel speed sensor are connected with each other. The automatic driving control unit is connected with the radar controller and the camera controller signals on the whole vehicle. In autopilotmode, the autopilot control unit operates and the electronic parking control unit, electronic parking brake and wheel speed sensor are used as redundant backup braking systems. The electronic parkingcontrol system fully meets the requirement of automatic driving redundant braking backup, and can realize redundant braking in automatic driving mode.

The invention provides an active queue self-adaptive management method ASRED. Active queue management AQM has always been a hot issue in the research of Internet congestion control. Although the traditional AQM algorithm can effectively predict and control the occurrence of network congestion, however, the traditional AQM algorithm relies on parameter setting too much and the sensitiveness is high, in different networks, the algorithm performance is unsteady and the performance difference is greater. Aiming at the above problems, a new active queue management algorithm ASRED is designed on the basis of GRED (Gentle RED) and ARED (Adaptive RED) algorithm thoughts, and a nonlinear function is adopted to calculate the probability of packet loss, and the quantity of packet loss is controlled more reasonably in a smooth curve growth mode; meanwhile, due to the characteristic of self-adaptive adjustment of max, the active queue self-adaptive management method ASRED provided by the invention can better adapt to the changes of the network environment, predict and prevent the occurrence of congestion, and can adequately guarantee the network throughput rate for the changeable network environment.

The invention provides a grabbing method for industrial stacked parts, terminal equipment and a readable storage medium. The method comprises the steps that a series of grabbing poses of the industrial parts placed under a standard pose in a stacking scene are generated, and a pose estimation result is obtained; the pose estimation result is evaluated by adopting a grabbing property evaluation function, wherein an expression of the grabbing property evaluation function is as follows: f1 is an evaluation value of grabbing position accessibility, f2 is an evaluation value of the relative heightof one industrial part to be grabbed, f3 is an evaluation value of the stability of the industrial part to be grabbed, f4 is an evaluation value of the grabbing angle of an end effector, and alpha i is a weight parameter corresponding to the evaluation values; and the grabbing sequence and the grabbing pose corresponding to each industrial part are determined. The grabbing stability and efficiencyare improved, and the industrial requirement is met.

The invention provides a human-simulated intelligent control method for autonomous region keeping of a water-jet propulsion unmanned ship, which is characterized in that analysis and calculation for a key parameter are performed on parameters measured by a position and attitude sensor used for controlling the boundary, a region keeping judgment system judges whether region keeping is required to be performed or not according to a calculated value and an actual value of the key parameter, a deviation equation of an under-actuated water-jet propulsion unmanned ship motion equation and a region keeping stop position trajectory equation is solved if region keeping is required to be performed, data information is transferred to a human-simulated intelligent controller, and the human-simulated intelligent controller determines a region keeping control strategy according to a regulated variable, the deviation and the variation trend of the deviation and implementing the region keeping control strategy through an execution mechanism. The human-simulated intelligent control method is applicable to the fields of region marine search and rescue and exploitation technologies and the like, and can ensure the unmanned ship not to be away from the specified region no matter how the unmanned ship moves.

The present invention provides a refrigerator oil containing a base oil, a compound represented by general formula (1), and an epoxy compound. [In formula (1), R1 and R2 each independently represent a monovalent hydrocarbon group, R3 represents a divalent hydrocarbon group, and R4 represents a hydrogen atom or a monovalent hydrocarbon group.]

The invention discloses a multifunctional polypeptide / liposome / hyaluronic acid assembled viroid nucleic acid carrier. The specific building method of the carrier comprises the steps that multifunctional polypeptide and cationic liposome are mixed, and then nucleic acid is added in the mixture for self-assembling to form nanoparticles with positive charge on the surface; polyanions are wrapped on the surfaces of the nanoparticles through the electrostatic interaction, and therefore the viroid nucleic acid carrier is assembled. The carrier has the advantages that by means of the human body safe biological materials, the novel non-viral carrier is built, wherein the novel non-viral carrier can tightly wrap nucleic acid and in-vivo long-term cycle and efficient targeting cancer cells, smoothly break through a cytomembrane and an endosome membrane to enter cytoplasm through the lipidosome membrane melting effect, release nucleic acid in the subacid cytoplasm through disassembling and self-degradation or enter a cell nucleus in a nanoparticle mode by changing a polypeptide sequence.

The invention discloses a positive electrode material. The positive electrode material comprises a positive electrode active material and a conductive agent--graphite, wherein the positive electrode active material can be reversibly extracted from and embedded into a first metal ion, and the graphite has a particle size of less than 50 [mu] m and a crystallization degree of no less than 90%. The invention also discloses an aqueous battery. The aqueous battery comprises a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode comprises the positive electrode material. The conductive agent--the graphite of the invention has good stability and corrosion resistance, reduces self discharging rate of the battery and enhances the cycle performance of the battery.

The invention provides an emergency braking power-assisted control system. The emergency braking power-assisted control system comprises an executing mechanism, a main cylinder pressure sensor, a servo cylinder pressure sensor, a wheel speed sensor, a displacement sensor and an electronic control unit. The invention further provides a corresponding control method. The emergency braking power-assisted control system and method have the advantages that the system can judge the vehicle braking requirement by collecting a brake pedal displacement signal, a wheel speed signal and a main cylinder pressure signal. High braking pressure is provided in time in combination with the vehicle state, the control authority can be given to the ABS function when wheels have the locking tendency, and good braking efficiency and stability can be kept in the braking process.

The invention relates to a one-step frequency modulation control method for a steam turbine, and aims to solve the problems in a rotating speed diversity factor of a current one-step frequency modulation function that if the rotating speed diversity factor is set to be smaller, the control and safety of the turbine can be influenced, and if the rotating speed diversity factor is set to be larger, the primary frequency modulation capacity of the turbine can be weakened, which is unfavorable for the stability of an electric grid. The control method comprises the following steps: step 1, regulating a system and calculating and monitoring deviation of rotating speed in real time; and step 2, performing one-step frequency modulation control according to a set rotating speed diversity factor. The one-step frequency modulation control method is applied to the field of the turbine regulation systems.

The invention discloses a dynamic human face tracking method. The method comprises the steps of S1, tracking a target by using a feature-based tracking algorithm, and when the tracking of the target is lost, going to and executing the step S2; S2, predicting a human face region position after the tracking is lost, establishing a feature point template, matching pixel points of the predicted humanface region position with the current feature point template, initializing an optical flow tracking algorithm by successfully matched feature points, tracking the target, and according to a loss stateof the feature points, updating the feature point template; and S3, when a target position which can be tracked by the feature-based tracking algorithm is restored, returning to and executing the step S1. The method can be suitable for human face tracking under complex conditions of deflection, shielding and the like, and has the advantages of simple implementation method, high tracking efficiency and precision, capability of taking stability and timeliness into account, high environmental adaptability, good anti-interference capability and the like.

The invention discloses a shallow slot negative bevel terminal structure applicable to a power metal oxide semiconductor (MOS) device, and a preparation method thereof. An active region is formed in the center of a chip and a terminal region is formed at the periphery of the chip; the bottom of an n+ substrate shared by the active region and the terminal region is provided with a drain of the device; an n- drift region is formed on the n+ substrate; a plurality of cells are arranged in the n- drift region of the active region; a p+ well region is formed on the lowermost part of each cell; a pbody region is formed on the p+ well region; an n+ source region is formed in the p body region; a source electrode is arranged on the n+ source region; the n+ source region is in short circuit connection with the p body region through the source electrode; a polysilicon gate is arranged between two adjacent source electrodes; a gate oxide layer is arranged under the polysilicon gate; and in the p+ well region of the terminal region, a slot of which the two sides are vertical and the bottom extends into the n- drift region is formed by a two-step etching method, and silicon oxynitride is filled in the whole slot. By the structure, breakdown voltage, terminal area, stability and mechanical strength are considered.

The invention discloses a package structure. According to the invention, a substrate provided with a device is welded on a base plate in an inverted manner, and pins of the device are electrically led outward to the base plate by metal convex blocks. The package structure is characterized in that the substrate is tightly wrapped by a first package layer, the first package layer is combined with the base plate so as to form a sealed structure which surrounds the substrate and the device, and the sealed structure is internally provided with a cavity; and the first package layer is a multilayer film. The air tightness and the stability of the package structure are considered, and the volume of the package structure is reduced as far as possible at the same time. In addition, the packaging process is simplified, and the packaging cost is reduced.

The invention provides a mobile terminal and downward power control method, comprising: measuring the signal-to-interference ratio of each coded composite transport channel to obtain respective signal-to-interference ratio measured value; calculating the signal-to-interference ratio predicted value of each coded composite transport channel according to the signal-to-interference ratio measured value; calculating the difference value between the maximum and the minimum in the signal-to-interference ratio predicted value; judging whether the difference value is larger than the preset first threshold, if yes, generating a power control command word which can decrease the transmitting power for the coded composite transport channel corresponding to the maximum and generating a power control command word which can increase the transmitting power for the coded composite transport channel corresponding to the minimum, if no, comparing the signal-to-interference ratio predicted values of the coded composite transport channels with respective signal-to-interference ratio target values thereof to generate respective power control command word. The invention can effectively improve the reliability and stability of a plurality of closed loop power control of the coded composite transport channels at the same time slot.

The invention discloses a subcritical unit coordination prediction function control algorithm based on a leading disturbance model. The conventional PID control system can not consider both the load quickness and the pressure stability, and the quality of a coordination control system needs to be improved. The prediction function control is applied to a pressure closed loop of the subcritical unit coordination control system, a prediction function control system is formed, and the pressure closed loop has a delay inertial link; the load closed loop of the subcritical unit coordination control system adopts PID control, and a load instruction adopts a datum line plus differential mode for a coal quantity feedforward system; an actual turbine control valve instruction serves as a disturbance signal source, and the optimal control law is acquired according to a prediction model of the prediction function control system; and simplification is carried out on the basis of the optimal control law, and a simplified optimal control law is obtained. The control quality of the subcritical unit coordination control system is improved, and both the load quickness and the pressure stability can be considered.

The invention discloses a human-simulated intelligent rotating speed control method for a brushless direct -current motor and belongs to the technical field of brushless direct current motor control.According to the method, control is realized based on the establishment of a system function and the determination and optimization of threshold parameters and control parameters; online characteristic identification and characteristic memorization can be realized; control strategies can be selected and determined on line on the basis of the characteristics of an error phase plane; a mode that a person adopts different control strategies for different situations is preliminarily simulated; the characteristic state of a system can be identified in real time according to a characteristic model which has an a priori property; a control strategy is determined; control output is generated; the precise mathematical model of a controlled object is not needed; and a rotating speed response curve obtained by the method has the advantages of smaller overshoot quantity, shorter response time and stronger anti-interference capability. The control method has certain universality and can adapt to the speed regulation control of various motors.

The invention relates to a blind source mixed signal accelerated separation method in engineering. Different kinds of signals have different inherent kurtosis values, so that when a mixed signal reaches the complete separation, each signal reaches the inherent kurtosis value; the kurtosis accumulation quantity of each separation signal reaches a stable value; by aiming at the defect of a blind source signal separation fixed step length natural gradient algorithm that the convergence speed and the steady state error characteristics cannot be met at the same time, the kurtosis accumulation quantity relevant to the separation signal is used for forming a proportional-differential control self-adaption variable step length algorithm; as long as in an allowed initial step length selection range, the acceleration step length can be regulated by the algorithm in a self-adaption way by freely selecting one initial step length value; and as the result, the separation speed can be accelerated, and the separation precision is ensured. The method provided by the invention only involves with the value of the selected step length initial value eta 0; the separation complete speed by the algorithm is higher than the fixed step length separation speed, and is almost identical; the ideal stable babbling errors are realized; and therefore the engineering use values are realized.

The invention discloses a method for blocking high stress in the upper part of an ore body by using a pressure relief groove, and is suitable for the technical field of deep mining. The method includes step (1) of determining pressure relief boundaries of upper and lower rock formations according to the rock formation movement range; step (2) of arranging rock drilling roadways respectively on theouter sides of the upper and lower top side pressure relief boundaries of the ore body along the trend, and causing upper and lower rock drilling roadways to be on the same horizontal line; step (3)of respectively horizontally forming a plurality of drilled holes in the sides of the upper and lower rock drilling roadways close to the ore body, and causing each drilled hole to be axially perpendicular to the side wall of the rock drilling roadway; step (4) of performing in-hole explosion in each drilled hole, and forming the continuous pressure relief groove in the upper portion of the ore body. By pre-tunneling the roadway at the top side of the ore body and drilling the top drill holes and carrying out in-hole explosion, the continuous pressure relief groove is formed at the top of theore body, the overlaying strata gravity stress is blocked off, and the pressure relief mining of the ore body in the high stress environment is achieved.

The invention relates to a TFT array substrate and a manufacture method thereof. The method includes the steps of first forming a first patterned conducting layer comprising a plurality of scanning lines and a plurality of grid electrodes connected with the scanning lines on the substrate; then forming a patterned grid insulating layer with a plurality of open pores on the substrate so as to cover the first patterned conducting layer and forming a plurality of dielectric patterns in the open pores; subsequently, forming a plurality of semiconductor patterns on the patterned grid insulating layer; after that, forming a second patterned conducting layer on the semiconductor patterns, the patterned grid insulating layer and the dielectric patterns; then forming a protective layer on the semiconductor patterns, the patterned grid insulating layer and the dielectric patterns; and finally forming a plurality of pixel electrodes on the protective layer. The invention can decrease the number of driving elements to achieve the purpose of reducing cost, simultaneously integrate the characteristic stability and high storage capacitance value of the TFT elements to satisfy the requirements on the design of the elements, and also achieve the effect of lessening the number of photo masks.

The invention belongs to the technical field of burner design, and particularly relates to a dry low-emission burner. The dry low-emission burner includes a venturi tube, a premixing outdoor cylinder,a premixing indoor cylinder, a nozzle body, a main combustion premixing spraying rod and a precombustion premixing spraying rod, wherein the outlet end of the premixing outdoor cylinder is connectedwith the inlet end of the venturi tube, the premixing indoor cylinder is arranged on the inner side of the premixing outdoor cylinder to form a main combustion level premixing channel with the premixing outdoor cylinder, and the nozzle body is arranged on the inner side of the premixing indoor cylinder, and a precombustion premixing level channel is formed between the nozzle body and the premixingindoor cylinder; the nozzle body is internally provided with a precombustion diffusion channel, the precombustion diffusion channel penetrates through the nozzle body in the axial direction, the end,close to the venturi tube, of the precombustion diffusion channel is provided with a precombustion diffusion nozzle hole, and the other end, close to the venturi tube, of the precombustion diffusionchannel communicates with a fuel source; and the inlet end of the main combustion premixing spraying rod communicates with the fuel source, the outlet end is arranged at the inlet end of the main combustion premixing level channel, the outlet end of the main combustion premixing spraying rod is provided with a main combustion premixing nozzle hole, the inlet end of the precombustion premixing spraying rod communicates with the fuel source, the outlet end is arranged at the inlet end of the precombustion premixing level channel, and the outlet end of the precombustion premixing spraying rod isprovided with a precombustion premixing nozzle hole.

The invention provides a dynamic planning method of data center server resource, suitable for d servers configured by a data center. The data center comprises multiple pods, each pod comprises racks, each rack can be provided with multiple servers, and d represents a positive integer. Racks whose residual space is greater than or equivalent to d is searched from the racks, so that d servers are configured. If the racks cannot configure d servers, one of the pods is redistributed, so that one rack is vacated, the residual space of the rack is greater than or equivalent to d, and d servers can be configured. If the rack cannot be vacated, redistribution is carried out on another pod, a position of a corresponding server of the corresponding rack in the pod is vacated, so that residual space of the corresponding server position is greater than or equivalent to d to configure d servers.