414results about How to "Improve realizability" patented technology

The invention discloses an automatic carrier-landing guiding method of a carrier-borne unmanned aircraft and belongs to the technical field of automatic carrier-landing guiding for carrier-borne aircrafts. The method comprises the following steps of determining a reference flight path at a capturing phase according to the initial course information and the positional information of the unmanned aircraft, determining a reference flight path at a tracking phase by considering the influence of deck movement, acquiring a flight-path error at the capturing phase by adopting a direct sightline method, and obtaining a flight-path error at the tracking phase by adopting a dynamic coordinate-system changing method; calculating longitudinal and transverse control-signal instruction values according to the flight-path errors, and guiding the carrier-borne unmanned aircraft to fly along the reference flight paths. The automatic carrier-landing guiding method of the carrier-borne unmanned aircraft provided by the invention has high realizability and operability, so that the carrier-landing performance of the unmanned aircraft under a specific carrier-landing environment is improved; the deck movement is directly led into a carrier-landing tracking-phase guiding algorithm, so that the addition of a deck-movement compensator to a controller is avoided, the complexity of a flight control system is lowered, and the reliability of a carrier-landing system is improved.

The invention discloses a method based on segmented expansion Kalman filtering for estimating the state of charge of a lithium battery. The method mainly comprises the steps of firstly, establishing asecond-order RC equivalent circuit model according to a working mechanism of the lithium battery; secondly, according to experimental data of pulse discharge responses of the lithium battery, utilizing a recursive least square method (RLS) to identify model parameters; thirdly, establishing a state space model of lithium battery discretization, adopting a segmented EKF algorithm to estimate the SOC of the lithium battery. According to the method, the suitable expansion Kalman filtering algorithm is utilized while an intensity nonlinearization process is distinguished from the working processof the lithium battery, and the robustness in the process of adopting a traditional EKF algorithm to estimate SOC is effectively improved; the problem is solved that decrease of filtering precision and possible filtering divergence are caused by Taylor series expansion linearization.

The invention discloses a bidirectional scanning gate drive circuit and a shift register unit of the bidirectional scanning gate drive circuit. The shift register unit comprises a first input end (1), a second input end (2), a first clock end (6) and an output end (8). A shift trigger signal and a reset signal are connected into the first input end (1) and the second input end (2) respectively. When forward shift and backward shift are switched, the signals connected into the first input end (1) and the second input end (2) are switched; a clock signal is connected into the first clock end (6), and the clock signal is used for providing drive level for the output end (8). The circuit of the shift register unit can be composed of at least four transistors and one capacitor. The circuit of the shift register unit is simple in structure, and the problem of coupled noise voltage caused by the clock signal can be solved.

The present invention provides a method and a system for controlling illumination; the system comprises a luminance controller which is used for confirming the control operation with the present luminance and converting the information of control operation into radio frequency signal for emitting; lamp controllers which are connected with every controlled lamp and used for receiving the emitted radio frequency signal; and then fetching the information of the control operation from the radio frequency signal and controlling the state of lamp according to the fetched information. The method comprises that the luminance controller confirms the control operation with the present luminance and converts the information of control operation into radio frequency signal for emitting; lamp controllers receives the emitted radio frequency signal and then fetches the information of the control operation from the radio frequency signal and controls the state of lamp according to the fetched information. The present invention utilizes the pattern of wireless automatic network to control the luminance according to the actual luminance on the site; no people are needed and the present invention can save power effectively.

A multiple pornographic image classification method based on an image segmentation algorithm and deep learning relates to the technical field of information, especially to the technical field of image identification. The method is characterized by comprising the following four major steps: skin color identification, principal component analysis of the skin color region, deep learning, and pornographic image identification based on a convolutional neural network. First, non-pornographic images are screened out through a skin color pixel detection and skin region partitioning algorithm based on the YCbCr theory. Undetermined images are input to a LeNet5-based convolutional neural network model for identification after feature extraction. Compared with the traditional identification based on skin color and features, the method can eliminate the noise influence of non-body-part images, is not constrained by light and human postures, and can greatly improve the accuracy of traditional pornographic image classification. Compared with general deep learning based on a convolutional neural network, the method does not need massive labeled images, and the characteristics of a deep residual network determine that the model can better analyze the characteristics of pornographic images. Only through about ten hours of training, an identification effect above 90% can be achieved.

The invention discloses a mainstream protocol implementation and monitoring analysis platform for an industrial control system. The platform comprises a simulation module for simulating a virtual controlled object, a controller PLC upper computer and a programmable logic controller (PLC) and a PLC industrial control protocol deep packet analysis and monitoring module, wherein the simulation moduleis used for simulating a mathematical abstract industrial control system; the PLC is used for receiving and storing a simulation system variable signal sent by the simulation module into a specific register and sending the signal to the upper computer, and meanwhile, receiving a control signal sent by the upper computer and sending the control signal to the controlled object of the simulation module; the PLC industrial control protocol deep packet analysis and monitoring module is used for acquiring protocol data flow of the industrial control system generated by communication between the upper computer and the PLC in real time, and carrying out real-time full analysis and monitoring on the acquired protocol data flow, the storage and the on-line display of an analysis result are realized, and meanwhile, the intrusion detection of the industrial control system is realized.

The invention discloses an active echo self-interference suppression scheme of a wireless broadband multi-antenna MIMO full-duplex system. A wave beam forming technology and self-adaption iteration filtering processing are applied to a full-duplex self-interference suppression method, pre-weighting processing is carried out all paths of emitting signals on a sending side through airspace wave beam forming, and echo self-interference signals are accurately estimated and eliminated on a receiving side through repeated iteration of a self-adaptive filtering algorithm. An FD-MIMO system frame is introduced through an airspace wave beam forming method, the broadband wireless FD-MIMO system echo self-interference suppression scheme combined with an active suppression mechanism is provided, the high self-interference signals of the full-duplex (FD) system are suppressed obviously, meanwhile, the bit error rate (BER) performance of the system is effectively controlled, the channel transmission capacity of the system is comprehensively improved, and the overall performance of the full-duplex system is improved. Under the condition of a fading channel, the bit error rate (BER) and system capacity of the full-duplex system under an existing ideal channel can be achieved, and the scheme can be used for various new-generation broadband wireless full-duplex communication systems.

The invention belongs to the technical field of nuclear reactors and discloses a heating pipe-type dual-mode space nuclear reactor core. The reactor core comprises a reactor core active zone, a reactor core cylinder, a radial reflection layer, an axial reflection layer and a control drum. The reactor core active zone is located in the reactor core cylinder. The axial reflection layer is located above the reactor core active zone. The axial reflection layer is a hollow cylindrical structure. The reactor core active zone, the axial reflection layer and a heating pipe are located in the cavity ofthe radial reflection layer. The reactor core can effectively prevent the heat pipe overheating and has the beneficial effects of safety and reliability such as passive and non-single point failure.

The embodiment of the invention provides a file storage system, a file storage device and a file access method. The system comprises a storage management device and an adapter, wherein the storage management device is used for receiving an operation command transmitted by a user interface device, and transmitting a dispatching order to the adapter according to the operation command; and the adapter is used for controlling a public cloud storage system to store or read files and return an operation result according to the dispatching order. The technical scheme of the invention is implemented on the basis of the conventional public cloud storage and cloud calculation technologies, and has the advantages of low construction complexity and easiness for implementing.

The invention discloses a trusted verifying method and equipment used in the running process of a virtual machine. The method comprises the steps that a configuration information collecting module stores the names and hash values of other inner core modules in an operating system inner core of the virtual machine, the name and hash value of an executable program loaded to internal storage and the name and hash value of a script in a configuration information list, and the hash values of the other inner core modules, the hash value of the executable program and the hash value of the script are added to a PCR of a VTPM; when a remote verifying service module receives a trusted evidence verifying request sent by an outer trusted entity, the configuration information list and a PCR value stored in the PCR of the VTPM are obtained and returned to the outer trusted entity, so that after the outer trusted entity confirms that the configuration information list is not modified according to the PCR value, the configuration information list is verified according to a local characteristic database, and whether the virtual machine is trusted or not is determined according to a verifying result. In the trusted verifying method and equipment, the safety and realizability of verifying the credibility of the virtual machine are improved.

The invention provides a method and a device for increasing the read-write rate of a double data rate synchronous dynamic random access memory (DDRSDRAM). The method comprises the following steps of: receiving a read address corresponding to a read request of a packet; caching the read address in a corresponding first first-in first-out queue (FIFO) according to a bank number; reading the read address out from a first FIFO in the first FIFO for the first time; if the next read address in the first FIFO and the read address read out for the first time belong to same-line addresses, continuously reading the first FIFO; and if the next read address in the first FIFO and the read address read out for the first time belong to different-line addresses, reading the next first FIFO in a polling mode. By the method and the device for increasing the read-write rate of the DDRSDRAM, realization difficulties are reduced, the realizability and the adjustment force of a field programmable gate array (FPGA) project are improved, and the read-write efficiency of the DDRSDRAM is greatly improved by limited resources.

The invention discloses a multi-dimensional multiplexing soliton optical fiber laser device which comprises a laser pump source and an annular laser resonant cavity consisting of a gain medium, a dispersive medium, a wavelength division multiplexer, an optical coupler, an optical circulator, a polarization controller and a polarizer. The laser pump source and the gain medium work together so as toprovide a gain amplification mechanism for laser device operation. The dispersive medium can be used for chromatic dispersion compensation of pulse laser so as to achieve chromatic dispersion management of an internal optical path of the laser device, and the optical circulator is a non-reciprocal optical transmission device for coupling the chromatic dispersion medium to construct a bidirectional transmission optical path structure. Via use of the polarization controller, a local polarization state of the internal optical path of the laser device can be changed, and mode-locking operation ofthe pulse laser and adjustment and switching of a mode-locking state can be realized. The multi-dimensional multiplexing soliton optical fiber laser device of the invention can be used for bidirectional transmission, and mode-locking laser pulses can be respectively obtained, generation of polymorphic soliton pulses can be supported, and a wideband wavelengths tuning function and a multiple wavelength switching function can be fulfilled via output laser pulses.

The invention discloses a velocity measurement system of a track bicycle, consisting of a signal detection circuit, a power circuit, a main controller, a voltage regulation circuit, a wireless communication module and a memory module. The processing procedure comprises the steps that the signal detection circuit acquires signals generated by movement of a chain and performs the primary process on the signal; and the main controller can save the parameters such as the velocity and the like, and can control the wireless communication module to send the parameters to the user upper computer so as to finish the real time monitoring of the velocity of the track bicycle through the further analyzing of the processed signals. The velocity measurement system can send and save the data in real time without the need of transforming the bicycle body, save the use cost, and is suitable for masses of users.

The invention discloses a rate matching method in an LTE (Long Term Evolution) downlink system, wherein specific to a 3GPP (The 3rd Generation Partnership Project) LTE downlink system, a transmission channel model based on Turbo codes is proposed, and circulatory filling and interlaced punching are adopted in the rate matching method in the LTE downlink system. In the invention, the rate matchingmethod comprises the steps of: firstly, performing bit collection by adopting a system-verification information bit stream interlaced combination method, and then adding or removing a corresponding number of bits to obtain corresponding code rate by adopting a circulatory filling or interlaced punching method specific to the collected bit stream, thereby realizing rate matching. Experimental tests show that compared with the traditional LET rate matching method, the rate matching method disclosed by the invention can be used for effectively increasing a false bit error rate (BER) performance.In addition, the rate matching method in the LET downlink system has the advantages that the positioning and deleting of dummy bits are omitted, the computational complexity is lowered, and the realizability of an algorithm on software and hardware is increased.

The invention discloses an energy feedback and harmonic passive power compensation system applicable to a rectifying device, comprising a power transistor, a controlling device, a three-phase power bridge and a filtering device, wherein, the anode of the power transistor is connected with the anode of a diode rectifying DC voltage, and the cathode of the power transistor is connected with the anode of a DC bus voltage of the three-phase power bridge; the cathode of a diode rectifying DC bus voltage is connected with the cathode of a DC voltage of the three-phase power bridge; the controlling device is used to control the opening and cutting of a power transistor of the three-phase power bridge; the three-phase power bridge is used to provide DC bus voltage to the controlling device and control the closing of the power transistor according to a command from the controlling device to generate a compensation current and provides the compensation current to the filtering device; the filtering device receives the compensation current from the three-phase power bridge, compensates the compensation current to the power grid after filtering high harmonics and provides the current signals to the controlling device. The energy feedback and harmonic reactive power compensation system can play the roles of active filtering and passive compensation, feed back energy to the power grid and realize energy saving.

A control state of the vehicle is switched upon operation of a control switch. Besides, a mode of travel for a travel of a vehicle is selected by operation of a travel mode selection portion. Then, it is determined whether the recommended control state recommended for the selected mode of travel and the actual control state are the same. If it is determined that they are not the same, that is, that there is a deviation between the recommended control state and the actual control state, an operation method for a control switch for realizing the control state recommended for the selected mode of travel is presented to a driver.

The invention provides a method for starting an application of a mobile terminal and the mobile terminal. The method includes the following steps: in the always-on state of the mobile terminal, detecting touch control operation on a touch screen of the mobile terminal; when the touch control operation meets a preset condition, according to the touch operation, determining a target application, corresponding to a touch control region, in the touch control region on the touch screen; in a preset period, obtaining fingerprint information input by a user through a fingerprint recognition module; if the fingerprint information is matched with preset unblocking fingerprint information, starting the target application. In the method, according to the touch control operation, the target application which corresponds to the touch control operation in the touch control region on the touch screen is firstly obtained, and then the fingerprint information is used for starting the target application; the starting method does not require the user to remember the location of a shortcut application, and the touch control operation can determine the target location in the touch control region; at the same time, it is not necessary to worry about starting of the application program because of a false touch, because after the target application is determined, fingerprint verification needs to be conducted and then the corresponding application program can be started.

The present application provides a method and device for transmitting reference signals. The method comprises the following steps: a network device sends first indication information to a terminal device, wherein the first indication information indicates the first configuration information of at least two types of configuration information corresponding to a first demodulation reference signal; each of the at least two types of configuration information comprises at least one of the following parameters: a sequence used for demodulating a reference signal, a density of time-frequency resources carrying the demodulated reference signal within a time-frequency resource group, an antenna port associated with the demodulated reference signal, and a location of the time-frequency resources carrying the demodulated reference signal. According to the first configuration information, the network device transmits the first downlink information and the first demodulation reference signal to theterminal device through the first time-frequency resource group, and the first demodulation reference signal is used for demodulating the first downlink information. Thus, it is possible to meet theconfiguration requirements of the reference signal for services having different reliability requirements.

The invention relates to a method for identifying a cylindrical surface from multi-line laser radar point cloud data. The method comprises the steps that firstly a cylindrical surface fitting mathematical model is set; then, a cylindrical surface fitting pretreatment step is carried out, and a RANSAC algorithm and a rotation matrix are utilized to determine two-dimensional plane ellipse fitting coordinates of each line of laser beam section; a cylindrical surface fitting step is carried out, a least square method and a Lagrangian multiplier algorithm are utilized to construct and solve an ellipse optimization target equation, fitting points are randomly selected, and an optimal fitting ellipse is obtained through solving by utilizing a least square short axis inclination angle constraint condition; and finally, seven parameters of the cylindrical surface are obtained through singular value decomposition and optimization calculation. According to the invention, the problem of cylindrical surface identification encountered when the cylindrical surface is taken as a calibration object by the laser radar in the process of combined external calibration of the multi-line laser radar andthe camera in the field of environmental perception can be solved, and the cylindrical surface identification precision of the low-resolution multi-line laser radar is relatively high.

The optical fiber is composed of fiber core area, coating layer and external coating layer. Characters are that the fiber core area is air; coating layer is in araneose structure including alternant layers between single material and air in concentric circles as well as support bars distributed on section symmetrically. The invention uses araneose coating structure of single material to replace hollow core fiber of all directional medium reflectors composed of two media. Transmission characteristics between the fiber produced from single material and fiber prepared from two media. Advantages are: increasing realizability, extending varieties available to be produced, and spectral range possible to be transmitted.

The invention discloses an expressway charging payment method and system and an expressway charging releasing system. The expressway charging payment method includes the steps that A, a first infrared receiver at an expressway inlet receives a driving-in request sent by a mobile terminal, transmits the driving-in request and pre-stored inlet information to a charging server and controls a gateway to be opened for releasing; B, a second infrared receiver at an expressway outlet receives a driving-out request sent by the mobile terminal and transmits the driving-out request and pre-stored outlet information to the charging server; C, the charging server calculates fee payable according to the inlet information, the outlet information and the driving-out request and feeds the fee payable back to the mobile terminal; D, after the second infrared receiver detects that the mobile terminal completes fee payment, the second infrared receiver controls a gateway to be opened for releasing. According to the expressway charging payment method and system and the expressway charging releasing system, an infrared transmitting mode is adopted, cost is quite low, universality is high, and the expressway charging payment method and system and the expressway charging releasing system can be suitable for all mobile terminals; in addition, the communication distance is reasonable, the technology is mature, realizability is high, and the waiting time of vehicles can be shortened.

The invention discloses a pixel circuit, a driving method thereof and a display panel. The pixel circuit comprises a driving transistor, a first light-emitting control module, a light-emitting moduleand a black frame insertion control module, the first light-emitting control module is used for being turned off in part of time periods of a light-emitting stage under the control of a light-emittingcontrol signal, and the driving transistor is used for driving the light-emitting module to emit light when the first light-emitting control module is turned on. The black frame insertion control module is used for writing a preset voltage into the first electrode of the driving transistor under the control of a first scanning signal and the light-emitting control signal in the black frame insertion stage that both the first light-emitting control module and the data writing module are turned off, wherein in at least part of the time period of the black frame insertion stage, the voltage difference value between the gate voltage of the driving transistor and the preset voltage and the voltage difference value between the gate voltage of the driving transistor and the first electrode voltage being positive and negative when the driving transistor is turned on. According to the technical scheme, the problems of ghost shadows and driving current reduction can be solved.

The invention relates to a vehicle active anti-rollover control system with a time-lag compensation function and a vehicle active anti-rollover control method. The vehicle active anti-rollover controlsystem comprises a sensor module, a transverse load transfer rate estimating module, a transverse load transfer rate predicting module, a time-lag identification module, an active anti-rollover controller and an anti-rollover actuator module. The sensor module obtains the vehicle transverse acceleration and a vehicle body side inclination signal. The transverse load transfer rate estimating module calculates an estimate value of the vehicle transverse load transfer rate in real time and judges the vehicle rollover degree. The transverse load transfer rate predicting module takes the estimatevalue, calculated by the estimating module, of the transverse load transfer rate as input, determines the time needing to be predicted in advance according to a control system time lag identified by the time-lag identification module, and outputs the transverse load transfer rate in the future time. Anti-rollover control over a vehicle is achieved through the anti-rollover controller. The time lagof the vehicle anti-rollover control system can be compensated, meanwhile, control precision can be guaranteed, and the active safety of the vehicle is improved.

The invention discloses a production plan change-oriented multi-objective constraint material substitution method, which comprises the following steps: 1, establishing a material substitution model; 2, establishing a material substitution algorithmic rule; and 3, performing an analysis and decision process of substitute material selection. According to the production plan change-oriented multi-objective constraint material substitution method disclosed by the invention, by aiming at material requirement coordination among a product bill of materials (BOM), a process BOM and a plan BOM, which is involved by the material substitution problem emerging in complex equipment due to a task change during an assembly production process, a multi-constraint and multi-objective-oriented material substitution model is established, and meanwhile, according to different attribute characteristics (a design characteristic, a process characteristic and a plan characteristic) of materials to be used as constrained parameters of material substitution, a substitute algorithm of the selection of different material substitutes so as to realize material section, matching and substitution among products, and therefore, the supply-demand relationship balance between substitute materials and product requirements under the assembly constraint environment of design, the process, the task change and resource capability and the like is guaranteed, on-hand inventory parts or parts expected to arriving in the future are reasonably distributed to meet the kitting requirements, and the goal that the total cost is minimized is achieved.

The invention discloses a THz radar transmitting / receiving front end, which comprises a dot frequency source unit, an intermediate frequency local oscillator generating unit, a first upper mixing unit, a second upper mixing unit and a linear sweep frequency unit. According to the THz radar transmitting / receiving front end, a THz radar transmitting link and a THz radar receiving link are respectively driven by using two incoherent sources, and the problem that a single signal source under a THz frequency band is difficult to drive the transmitting link and the receiving link simultaneously is solved; and moreover, a coherent system is realized through an incoherent source, the problem that the receiving signals generated by two signal sources have asynchronous phases is solved, and a linear frequency modulation continuous wave (LFMCW) sweep frequency signal is rapidly provided; and therefore, centimeter-sized range resolution of an object can be realized.

The invention disclose a full-electric-push satellite platform configuration based on a one-rocket two-satellite self-series-connection launching mode. The full-electric-push satellite platform configuration comprises two sub-satellite platforms with the same structure and a connecting and separating device (61), the connecting and separating device (61) is installed at one end of a center force bearing cylinder (121) and penetrates through a -Z plate (122) of one sub-satellite platform to be connected to a +Z plate (111) of the other sub-satellite platform. According to the full-electric-pushsatellite platform configuration, through the structure optimization design and the connecting and separating device, one-rocket two-satellite self-series-connection launching is realized; meanwhile,the two-cabin configuration, the load and platform equipment comprehensive layout and the storage battery and electric thruster innovative layout are adopted, so that on-satellite resource sharing isrealized, the testing process is simplified, the satellite weight and power requirements are reduced, and the satellite load bearing carrying capability is further improved.

The invention discloses the low dense checkout code high speed coding method, by the partition of the date source matrix and the building matrix, the multiplication operation between the date source matrix A and the building matrix B can be transformed into the multiplication operation between the n son matrix with the (m*a) dimensions of the matrix A and the nxc son matrix with the (axb) dimensions of the matrix B. The invention relates to the LDPC coding method, the LDPC coding setting can be realized cooperated with the FPGA by using the memorizer saving data source matrix and the building matrix such as the SDRAM. The realized LDPC coding setting has many merits such as the high operating speed, the low spending of the system and the good ability. Compared with the conventional LDPC coding method, the invention has the better project realizing ability and the quicker coding speed. The invention can avoids the speed bottleneck problem of the storage to improve the realizing ability of the LDPC coding setting when the large matrix multiplying.

The invention relates to a method for detecting direct sequence signals, which can be realized by a chip and has rapid speed, high efficiency, none cooperation, low signal-to-noise ratio. The method comprises the following steps: pre-collating received data, pre-calculating FFT, estimating consolidation biased autocorrelation functions, synthesizing consolidation unbiased autocorrelation functions, calculating four-level cross-correlation statistics quantity, and supposing examination. The method uses a covering principle (MCT) with FFT as a core and uses maximum cost to calculate main elements in a detector with optimum principles, and then an optimum detector can be rapidly and approximately realized through detecting symbolic code period parameters. The saved calculation amount and the size of a memory of the method are two magnitude orders more than that of the optimum detector. The mode of modulating signals has wide application range, wide Doppler frequency shift is tolerated, the constant false alarm rate and the detecting precession of the parameter are high, the detecting performance is much better than an existing symbolic code period detector, and the problem that OPSK or higher digital phase modulation DSSS signals can not be detected by a carrier frequency detector under low signal-to-noise ratio is solved.

The invention discloses a command filtering-based synchronous motor neural network back-stepping discrete control method. In order to solve the problem that a permanent magnet synchronous motor has many variables and strong coupling, and is easily affected by external load and motor related parameter changes, a neural network adaptive controller is designed based on a command filtering technologyand the principle of a back-stepping method; the neural network technology is used to approximate unknown nonlinear terms; the adaptive back-stepping method is applied to the design of the controller;and the command filtering technology is used to solve the problem of computation explosion. According to the method of the invention, complete controller design which is absent in a traditional method is supplemented, so that Lyapunov stability analysis is improved; after being subjected to the control and adjustment of the controller, the operation of a motor can quickly reach a steady state, sothat the motor is more suitable for a control object requiring fast dynamic response; and simulation results show that the novel controller overcomes the influence of parameter inaccuracy, ensures anideal control effect, and achieves the fast and stable tracking of a position.