199 results about "Linear matrix" patented technology

A linear light system, and a linear luminaire used in the system, for lighting a traffic surface. The linear luminaire has a plurality of light emitting diodes (LEDs) disposed in a linear matrix along the length of the traffic surface, and a plurality of refractive lenses for directing the emitted light from the LEDs at the traffic surface. The traffic surface is typically the roadway of a tunnel. A refractor lens is used to direct the emitted light from the LEDs predominantly toward at least the traffic surface.

A bidirectional signal processing method uses parallel transmission of digital transmitted data streams in a multiple input-multiple output system. Related art methods generate high bit error rates mostly in singular transmission channels. For this reason, the rank-adaptive signal processing method provides that the number n_d of active subchannels are varied according to the actual channel behavior in order to effect a robust data transmission even in singular radio channels based on a transmit-side and receive-side channel knowledge and a modification of the data vector by a linear matrix vector multiplication while introducing a factor gamma for limiting the maximum transmit power. The maximum transmit power is then only distributed to the currently activated subchannels so that no transmit power remains unused. Another optimization of the number of subchannels n_d occurs when selecting the modulation and encoding methods. During the optimal rank-adaptation according to the water-filling principle, another power is allocated to each subchannel. Another modulation and encoding method is accordingly selected for each data stream. During the suboptimal rank-adaptation according to the channel inversion principle, all subchannels have the same power whereby enabling the data streams to be modulated and encoded in a common source

The invention belongs to the field of spacecraft control and relates to a fuzzy singular perturbation modeling and robust attitude control method for complex flexible spacecraft, namely a robust combined control method for fusing static output feedback control and output integration. The method comprises the following steps of: establishing an uncertain continuous fuzzy singular perturbation model and a standard discrete fuzzy singular perturbation model according to a dynamic model and a kinematic model of the spacecraft in combination with fuzzy logic and singular perturbation technology; and designing a robust controller combined by a static output feedback controller and an output integrator by a spectral norm and linear matrix inequality (LMI) method and resolving a group of LMIs which are unrelated to a perturbation parameter so as to obtain a controller parameter and solve an ill-conditioned problem caused by the perturbation parameter and the problem of difficulty in selection of an initial value in an LMI resolving static output feedback controller gain method. Through the method, flexible vibration and external interference can be overcome effectively, and control effects such as high response speed, high attitude control accuracy, high anti-jamming capability and high robust performance are achieved.

A generalized framework is disclosed in which a wide variety of propagation models can be cast in a matrix-based format using arbitrary matrix coefficients (e.g., real numbers, integers, etc.). Casting propagation models in the matrix-based framework enables efficient computer implementation and calculation, ease of tuning, admissibility (i.e., the tuned parameters of a linear matrix model are guaranteed to be the global optimum), and aggregating multiple propagation models into a single matrix-based model. Matrix-based propagation models based on transmitter-receiver azimuth orientation, transmitter antenna height, terrain elevation, and clutter are also disclosed. The propagation models can be used in conjunction with automated data acquisition from information sources such as topographic maps, clutter maps, etc.

CCD-RAW data obtained by sensing the image of a subject is applied to a first noise reduction circuit via a offset correction circuit, a gain correction circuit, a linear matrix circuit and a gamma correction circuit. Uncorrelated noise is removed from the CCD-RAW data in the first noise reduction circuit. The CCD-RAW data is subjected to synchronization (color interpolation) in the synchronization processing circuit, and luminance data Y and color difference data C is generated by an RGB-YC conversion circuit. The generated luminance data Y and generated color difference data C is subjected to noise reduction processing on a per-frequency-component basis in the second noise reduction circuit. Suitable noise reduction processing conforming to the state of image data before and after synchronization processing is executed.

A camera for use with a flash apparatus is capable of achieving excellent color balance when a picture is taken using the flash apparatus. The camera comprises a flash control circuit that controls the amount of light generated by the flash apparatus, and a color adjusting circuit including a linear matrix circuit and a gain control circuit that controls hues or color saturation. A color correcting circuit controls the color adjusting circuit such that the hue or color saturation is properly adjusted in accordance with the amount of light determined by the flash control circuit.

An NSET method and apparatus for modeling and monitoring the status of a system is disclosed. The NSET employs a nonlinear similarity operator in place of linear matrix multiplication, to estimate a set of sensor data based on learned reference data, responsive to receiving a set of actual sensor data. Regularization is used in the generation of the estimate. The estimated data values and the actual sensor data are differenced to produce residuals, which are statistically tested with a SPRT to detect anomalies. Cluster centers may be used to represent learned reference data. The detection of anomalies can be used advantageously for sensor calibration verification.

The invention discloses a 2D controller design method for interval time lag in the injection modeling process. The method comprises the steps that A, a state space model is established according to a control requirement of parametric variables in the injection modeling process; B, according to the repeated operation characteristic of the injection modeling process, the established state space model is converted to be a 2D error augmentation model by a 2D-FM model design method; C, a controller meeting a control law r (tk) is designed according to the 2D error augmentation model; D, a linear matrix inequation mode is used for solve the gain K of the controller. The 2D controller design method directs at the time lag phenomenon existing in the injection modeling process to establish the state space model based on a two-dimensional system theory, a 2D-FM model is used for designing the controller, the system can be quickly stabled in the injection modeling process, tracking can be conducted quickly, and the system can be still kept in good control performance even though the system is influenced by time lag. The 2D controller design method for interval time lag in the injection modeling process can be widely applied to the technical field of injection modeling.

A source signal transmitted through multiple channels having space, time and frequency diversities to generate multiple received signals is recovered by an iterative associative memory model with dynamic maximum likelihood estimation. A current symbol vector representing the multiple received signals is projected to a net-vector using a linear matrix operation with a weight matrix W. The weight matrix is obtained by a singular value decomposition of an input symbol sequence. The net-vector is mapped to a nearest symbol vector using a non-linear operation with an activation function. The projecting and mapping steps are repeated until the nearest symbol vector converges to a valid symbol vector representing the source signal.

The invention discloses an aircraft tracking control direct method with input saturation to solve the technical problem that input saturation tracking control is difficult to realize if an aircraft has uncertain parameters and external disturbance exists. The method includes the steps: firstly, establishing an aircraft model with a time-varying uncertain parameter and external disturbance, and converting a non-linear system into a linear parameter varying error system through linearization along a time-varying path; then, obtaining a convex polyhedron description form of the error system through a tensor product model transform method, and directly describing a saturation effect of a control quantity also through a convex polyhedron structure if the state of the system is restricted within some local scope; and finally, on the basis of the robustness H-infinite theory, obtaining an input saturation controller by solving linear matrix inequations with limited number, the controller accurately tracking instructions and effectively inhibiting disturbance within the system state local range. In particular, if state constraint matrixes are made to be equal to control matrixes, saturation of the controller can be prevented.

Circuitry for solving linear matrix equations involving a resultant matrix, an unknown matrix and a product matrix that is a product of the resultant matrix and the unknown matrix includes matrix decomposition circuitry for triangulating an input matrix to create a resultant matrix having a plurality of resultant matrix elements on a diagonal, and having a further plurality of resultant matrix elements arranged in columns below the resultant matrix elements on the diagonal. The matrix decomposition circuitry includes an inverse square root multiplication path that computes diagonal elements of the resultant matrix having an inverse square root module, and the said inverse square root module computes inverses of the diagonal elements to be used in multiplication in place of division by a diagonal element. Latency is hidden by operating on each nth row of a plurality of matrices prior to any (n+1)th row.

Image data of a digital signal is inputted to a digital signal processor. A CPU reads out color correction coefficients from a ROM. Weights are added to the color correction coefficients based on information regarding transfer efficiency of a CCD image sensor such that the coefficients in a horizontal direction are set larger than those in a vertical direction. Further, an interpolation processor calculates horizontal and vertical components of R, G, and B colors of each pixel through color interpolation processing based on image data of each pixel and its peripheral pixels. A linear matrix circuit is controlled by the CPU and subjects the horizontal and vertical components to linear matrix operation using the color correction coefficients, thus subjecting each pixel data to color correction processing.

The invention discloses an online optimization method of grid-connected operation of a distributed cool-heat-electricity cogeneration system. The method comprises the following steps that an operation strategy library is set up; a system operation constraint model and a rolling optimization target model are set up according to operation strategies; optimizing process of linear matrix is conducted on the obtained models; an optimization algorithm library comprising a traditional optimization algorithm, an intelligent algorithm and a mixed algorithm is set up to conduct the optimal solution on the optimized models. Being supported by the basic operation strategy library and the optimization algorithm library, the online optimization method of the grid-connected operation of the distributed cool-heat-electricity cogeneration system takes generality and difference of the system operation constraint model under different operation strategies into consideration, and describes and optimizes the different operation strategies in a same linear matrix mode, so that not only are the reusability and expansibility of the system operation constraint model improved, but also online optimization and control implementation of the distributed cool-heat-electricity cogeneration system under the appointed strategies are facilitated, and possibility is provided for the online optimization and switching among the multiple operation strategies.

The invention relates to a nonlinear two-dimensional code product and an application assembly thereof, in particular, a nonlinear two-dimensional code product, an encoder and a decoder. Compared with a current linear matrix two-dimensional code, the nonlinear two-dimensional code product has been significantly improved in the aspects of encoding technology, product structure, encryption method and decoding technology; the nonlinear two-dimensional code product has four basic types of image codes, namely, a straight line arrangement code, a single-kind curve line code, a curve line and straight line interleaving code and a multi-curve line interleaving code; the four basic types of image codes can be combined together, so that the patterns of the image codes are richer and more colorful, and customized services of the patterns of the image codes can be provided for users; and the decoder can decode an original image, a photographed image, a screenshot and a printed image and can be suitable for wide online and offline application. With the nonlinear two-dimensional code product adopted, the users can define parameters by themselves, and directly participate in the design of the image code product, and create their required products, and therefore, user-defined and customized services of the two-dimensional code in the aspects of form and structure can be realized; and encryption schemes such as additional information, geometric algorithms and pattern diversification are adopted, and therefore, application security can be ensured.

The matrix coefficient determining process of the present invention can determine linear matrix and color-difference matrix coefficients appropriate for a given type of light source at the same time. The coefficients can be used to perform color correction of RAW data to ensure good color reproduction. Furthermore, by performing the matrix coefficient determining process for a number of types of light sources, optimum color reproduction coefficients and for each of the light sources can be obtained.

A method for controlling the position and speed of a vehicle having steered wheels includes, determining an overall path comprising a plurality of points and defining the course of the vehicle between a starting point and an endpoint; determining the current position of the vehicle; if the current position does not correspond to a point on the overall path, generating a local path connecting the current position of the vehicle to a point on the overall path; and generating control signals in order to steer the steered wheels and control the speed of the vehicle so that the vehicle moves along the local path. The control signals are generated by convex optimisation of linear matrix inequalities.

The invention discloses a complex dynamic network modeling method and a model controller design method. Modeling of a complex dynamic network is performed under the condition of random exchange of non-time-delay and time-delay coupling matrixes by applying the idea of robustness firstly, a novel partially time-delay dependent random spinning controller is designed and the problem of stabilization of the complex network system under the condition of random exchange of the coupling matrixes related to network topology is solved. The designed spinning controller is different from conventional controllers, the non-time-delay and time-delay state feedbacks of the spinning controller asynchronously occur at a certain probability. Corresponding sufficient conditions enabling the system to be stabilized are given and prevented in linear matrix inequalities under the effect of the designed controller based on the constructed complex network model. When the probability of random variables is unavailable, a self-adaptive partially time-delay dependent controller is provided for processing the situation.