16 results about "Nonlinear channel" patented technology

An apparatus and method are provided for digital predistortion of an electrical signal to pre-compensate for nonlinear distortions in a nonlinear channel (e.g., a nonlinear channel including a high-power amplifier). The digital predistortion processor includes a nonlinear filter. Filter coefficients are determined using a modified input electrical signal having multiple simultaneous tones, using an iterative process which adapts the modified input electrical signal to reduce levels of intermodulation distortions in a modified output electrical signal.

The invention discloses a channel dynamic cloud detection method and system based on a meteorological satellite hyperspectral infrared detector, and the method firstly proposes nonlinear channel optimal selection based on Gaussian mixture model probability approximation quantization relative entropy, and can reduce the error distribution of temperature and humidity. Secondly, based on layer-by-layer cloud simulation and clear sky brightness temperature simulation, a cloud profile inversion method of a weighted L1 norm constraint inverse problem of Gaussian disturbance + numerical approximation signal degree-of-freedom optimization channel weight is provided, cloud amount information of multiple layers from bottom to top is obtained, and the actual condition of actual cloud vertical distribution is met. And finally, a cloud detection result is obtained by customizing each channel of each field point by adopting an adaptive dynamic cloud detection method, which is beneficial for reasonably using the brightness temperature data of the hyperspectral infrared channel and realizing the application of partial cloud region data, so that the data quantity of the brightness temperature of the variational assimilation channel is increased, and the precision of numerical weather forecast is further improved.

The invention discloses an intelligent water pump control system, which belongs to the technical field of intelligent control and comprises a data acquisition module, a data preprocessing module, an operation state detection model construction module, an energy-saving efficiency prediction model construction module and an intelligent control module. According to the method, attention weights are calculated based on mutual information, time sequence fusion features are obtained, a multi-modal attention dynamic graph is generated, an initial feature matrix is extracted, time sequence trend features are obtained based on a trend slope, a residual error between the initial features and a window mean value is calculated and converted into a mutation probability, and the trend slope and the mutation probability are introduced to adjust gating parameters. According to the method, multi-frequency subsequences are obtained based on wavelet decomposition, time sequence features are extracted, a time feature tensor is obtained in combination with an attention mechanism, time-channel cross features are weighted through nonlinear channel weights, a channel feature tensor is obtained, an accurate motor rotating speed instruction is provided for intelligent control, and the safety and stability of water pump control are improved.

A patient transport apparatus comprising a support frame, a base, a bracket coupled to the support frame and comprising a channel being non-linear, a frame assembly coupled between the support frame and the base and comprising a slidable member disposed in the channel, the slidable member being moveable between a plurality of different positions in the channel to place the support frame in a plurality of different poses relative to the base. The patient transport apparatus also comprises a sensor configured to detect the slidable member in the channel and produce a reading, as well as a controller coupled to the sensor and configured to receive the reading from the sensor, determine the position of the slidable member in the channel based on the reading, and determine the pose of the support frame relative to the base based on the determined position of the slidable member.

Reactors are provided that can include a first set of fluid channels and a second set of fluid channels oriented in thermal contact with the first set of fluid channels. The reactor assemblies can also provide where the channels of either one or both of the first of the set of fluid channels are non-linear. Other implementations provide for at least one of the first set of fluid channels being in thermal contact with a plurality of other channels of the second set of fluid channels. Reactor assemblies are also provided that can include a first set of fluid channels defining at least one non-linear channel having a positive function, and a second set of fluid channels defining at least another non-linear channel having a negative function in relation to the positive function of the one non-linear channel of the first set of fluid channels. Processes for distributing energy across a reactor are provided. The processes can include transporting reactants via a first set of fluid channels to a second set of fluid channels, and thermally engaging at least one of the first set of fluid channels with at least two of the second set of fluid channels.

A patient transport apparatus comprising a support frame, a base, a bracket coupled to the support frame and comprising a channel being non-linear, a frame assembly coupled between the support frame and the base and comprising a slidable member disposed in the channel, the slidable member being moveable between a plurality of different positions in the channel to place the support frame in a plurality of different poses relative to the base. The patient transport apparatus also comprises a sensor configured to detect the slidable member in the channel and produce a reading, as well as a controller coupled to the sensor and configured to receive the reading from the sensor, determine the position of the slidable member in the channel based on the reading, and determine the pose of the support frame relative to the base based on the determined position of the slidable member.

Described herein are heat exchangers and heat source assemblies, which may be fabricated using electrochemical additive manufacturing (ECAM). A heat exchanger comprises a base and a heat-exchanging portion electrochemically deposited on and attached to the base and comprising heat-exchanging extensions with heat-exchanging surfaces. The combination of the heat-exchanging surfaces and the base forms openings (e.g., non-linear channels) for directing a heat transfer fluid through the heat exchanger. The openings may extend to the base for direct contact. The average CTE of the base may be closer to that of the heat source than the average CTE of the heat-exchanging portion. In some examples, the heat-exchanging portion comprises extension ends for thermal coupling to the heat source. Any dimension of each extension end may be less than a critical dimension, determined by adhesion, CTE mismatch, and temperature fluctuations.

An optical wireless apparatus that is implemented for transmitting an optical wireless signal via an optical wireless channel includes: an electronic signal source that is configured to provide a data signal and an optical signal source that is configured to convert the data signal into the optical wireless and to emit the same. The optical wireless apparatus is configured to obtain channel information including information associated with a non-linear channel distortion of the optical wireless signal and to perform adaptation of a modulation of the optical signal source by changing an operating state of the electronic signal source for adapting the non-linear channel distortion and / or to perform adaptation of an operating point of the optical signal source for adapting the non-linear channel distortion.

The invention relates to a device for the manufacture by extrusion of a porous tubular support from a ceramic composition, the device including:a fixed extrusion die (6) in which is mounted a punch holder (7) provided with a centered rectilinear punch (8a) and with at least one helically-shaped punch (8) wound around an axis of symmetry (X) along a winding direction and a winding pitch;a system (10) for driving in rotation the punch holder (7) around said axis of symmetry (X) along a direction of rotation opposite to the direction of winding of the punch(es) (8) and at a speed of rotation synchronized with the linear speed of extrusion of the ceramic composition.

A device (100) for traversing a suspended cable (110) anchored at each end, and the device comprising: an open non-linear channel (130) for receiving, by a slotting action, the suspended cable, said non-linear channel defining a minor segment (165-2); a motor (135); and a drive mechanism (140), powered by the motor, arranged within the minor segment so as to contact the suspended cable when received by the non-linear channel and thereby to drive the device along the suspended cable.

A lens for a horn antenna and a horn antenna including the lens. The lens includes a generally horn-shaped plate assembly extending generally along an axis from a first side to a second side opposite the first side. The generally horn-shaped plate assembly defines a plurality of nonlinear channels. The plurality of nonlinear channels are operable to manipulate electromagnetic waves received at the first side and provide manipulated electromagnetic waves at the second side. The plurality of nonlinear channels can affect the amplitude and / or phase distribution of the electromagnetic field transmitted through the lens.

Described herein are methods of fabricating heat exchangers and heat source assemblies using electrochemical additive manufacturing (ECAM). A method may comprise submerging a build plate (e.g., a base and / or a heat source) and a printhead into an electrolyte and selectively activating an electrode subset of the printhead thereby electrochemically depositing a heat-exchanging portion. In the final assembly, the average coefficient of thermal expansion (CTE) of the base is closer to that of the heat source than the average CTE of the heat-exchanging portion. The combination of the heat-exchanging surfaces and the base forms openings (e.g., non-linear channels) for directing a heat transfer fluid through the heat exchanger. The openings may extend to the base and / or to the heat source for direct contact. For example, any dimension of each extension end may be less than a critical dimension, determined by adhesion, CTE mismatch, and temperature fluctuations.

A finFET is presented that includes a nonlinear channel. The nonlinear channel includes one or more arcuate, curved, segmented, or the like sidewalls that define a channel width and a channel length. The nonlinear channel provides a relatively increased channel length compared to a linear fin oriented perpendicular to the gate width. Thus, the channel length of the nonlinear channel can be relatively increased within the boundaries of the gate. In other words, the relatively increased channel or fin length within the footprint of the gate can limit short-channel effects by suppressing the electric field along the nonlinear channel.

The application provides a nanosecond micro-impulse generation method for chip electrostatic tolerance, relates to the technical field of detection systems, and establishes a low-energy linear channel model and a segmented nonlinear channel model of a triggered electrostatic protection clamp for a target test port of a measured chip, discretely decomposes a pre-distortion excitation instruction into a charge packet sequence containing a charge amount parameter, an energy parameter and a release time parameter, injects and forms a nanosecond micro-impulse waveform according to the release time, performs wideband sampling on port voltage and current, obtains an actual port waveform based on double-model inversion compensation, calculates an error, and updates the charge packet sequence in a closed loop until convergence output is obtained, meanwhile, port impedance and leakage response criterion extraction are realized through a pre-processing section, a main impulse section and a latch detection section, which are used for distinguishing soft breakdown and hard breakdown and generating a multi-port sensitivity distribution, and the method has the characteristics of controllable, reproducible and traceable waveform.

The present application relates to the field of computer vision, and more particularly to a face emotion classification system based on multi-modal image recognition, comprising a multi-modal data acquisition module, a data preprocessing module, a face detection and target detection module, a feature extraction module, a global context modeling module and an emotion classification output module, wherein the present application introduces a KAN nonlinear channel mapping mechanism after the visual Transformer feature output, utilizes the function approximation capability based on the Gaussian radial basis function to perform a channel-by-channel nonlinear transformation on the multi-scale features, realizes the mapping from the linear semantic representation to the nonlinear semantic space, and thus enhances the expression capability of the model on the micro-expression changes and the fine-grained emotion features; the present application introduces a state space modeling mechanism in the global context modeling module, and combines the KAN gating nonlinear modulation mechanism to realize the linear complexity modeling on the long-range dependency relationship, and simultaneously enhances the nonlinear expression capability in the state space.