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5176 results about "Adaptive control" patented technology
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Adaptive control is the control method used by a controller which must adapt to a controlled system with parameters which vary, or are initially uncertain. For example, as an aircraft flies, its mass will slowly decrease as a result of fuel consumption; a control law is needed that adapts itself to such changing conditions. Adaptive control is different from robust control in that it does not need a priori information about the bounds on these uncertain or time-varying parameters; robust control guarantees that if the changes are within given bounds the control law need not be changed, while adaptive control is concerned with control law changing itself.
User interface for presenting media information
A user interface and methods for using a user interface for controlling processing of time-based media files. In one exemplary method, a graphical representation of a time line for a time-based media is displayed along with a graphical representation of a current time along the graphical representation of the time line. A start graphical indicator and a stop graphical indicator is also displayed along the graphical representation of the time line. A portion of the time-based media may be selected for presentation by dragging or positioning at least one of the start graphical indicator and the stop graphical indicator along the graphical representation of the time line. In another aspect of the invention, an exemplary method allows for the adaptive control of a portion of the interface which indicates time relating to a time-based media. An input speed is determined where this input is to change the portion and the rate at which the change to this portion occurs is dependent upon the input speed. Other aspects of the present invention relating to the interface for controlling the processing of time-based media files are also described.
Owner:APPLE INC
Control of an optical fiber scanner
InactiveUS6845190B1Remove nonlinear behaviorRobust cancellationSurgeryEndoscopesOptical scannersPhotodetector
Controls for an optical scanner, such as a single fiber scanning endoscope (SFSE) that includes a resonating optical fiber and a single photodetector to produce large field of view, high-resolution images. A nonlinear control scheme with feedback linearization is employed in one type of control to accurately produce a desired scan. Open loop and closed loops controllers are applied to the nonlinear optical scanner of the SFSE. A closed loop control (no model) uses either phase locked loop and PID controllers, or a dual-phase lock-in amplifier and two PIDs for each axis controlled. Other forms of the control that employ a model use a frequency space tracking control, an error space tracking control, feedback linearizing controls, an adaptive control, and a sliding mode control.
Owner:UNIV OF WASHINGTON
Methods, Apparatus and Computer Program Products for Audience-Adaptive Control of Content Presentation Based on Sensed Audience Demographics
InactiveUS20070271580A1Television system detailsColor television detailsComputer sciencePopulation statistics
Content is presented by sensing attributes of unknown audience members and determining demographics of the unknown audience members from the attributes that are sensed. A content presentation device is controlled based on the demographics that are determined. Related methods, systems, and computer program products are disclosed.
Owner:BELLSOUTH INTPROP COR
Power conserving adaptive control system for generating signal in portable medical devices
A system and method for adjusting power employed by a light emitting device used for medical applications, such as measurement of patient parameter. A system or device includes a light emitting device, a power unit coupled to the light emitting device for powering the light emitting device and responsive to a control signal for adjusting power applied to the light emitting device, and a control unit for providing the control signal and coupled to the power unit, the control signal being determined in response to a characteristic of a signal associated with a physiological parameter measured using light produced by the light emitting device.
Owner:DRAGERWERK AG
Adaptive noise control system
ActiveUS20100014685A1Improve robustnessImprove stabilityEar treatmentNoise generationNoise controlControl system
An active noise cancellation system that reduces, at a listening position, power of a noise signal radiated from a noise source to the listening position. The system includes an adaptive filter, at least one acoustic actuator and a signal processing device. The adaptive filter receives a reference signal representing the noise signal, and provides a compensation signal. The at least one acoustic actuator radiates the compensation signal to the listening position. The signal processing device evaluates and assesses the stability of the adaptive filter.
Owner:HARMAN BECKER AUTOMOTIVE SYST
Hemofiltration system
InactiveUS6780322B1Reliable and long-term operationImprove accuracySolvent extractionUltrafiltrationMedicineTime changes
A multipurpose hemofiltration system (10) and method are disclosed for the removal of fluid and / or soluble waste from the blood of a patient. The system (10) continuously monitors the flow rates of drained fluid, blood, and infusate. When necessary, the pumping rates of the infusate, drained fluid and blood are adjusted to remove a preselected amount of fluid from the blood in a preselected time period. A supervisory controller (160) can monitor patient parameters, such as heart rate (120) and blood pressure (130), and adjust the pumping rates accordingly. The supervisory controller (160) uses fuzzy logic to make expert decisions, based upon a set of supervisory rules, to control each pumping rate to achieve a desired flow rate and to respond to fault conditions. An adaptive controller (162) corrects temporal variations in the flow rate based upon an adaptive law and a control law.
Owner:CHILDRENS HOSPITAL MEDICAL CENT CINCINNATI
Portable digital audio recorder with adaptive control configurations
InactiveUS6038199AEasy to shareEasy to manageDriving/moving recording headsSpecial service for subscribersComputer hardwareSelf adaptive
A portable digital audio recorder provides a first set of control or editing options with respect to a first category of voice data files stored in the recorder, and provides a different set of control or editing options with respect to a second category of voice data files stored in the recorder. The recorder may also be conveniently shared among a number of users and adapts various operating parameters to the preferences of the current user.
Owner:NUANCE COMM INC
Driver that efficiently regulates current in a plurality of LED strings
InactiveUS20090187925A1Minimize output voltageImprove performanceElectrical apparatusStatic indicating devicesLinear regulatorMOSFET
A light-emitting diode (LED) driver according to the present invention consists of a voltage pre-regulator and multiple linear current regulators with an adaptively-controlled drive voltage. In this LED driver, the efficiency maximization is achieved by eliminating the sensing of the voltage drops across the linear regulators, i.e., by removing the external voltage feedback for the adjustment of the output voltage of the pre-regulator. In the LED driver of the present invention, the self-adjustment of drive voltage is achieved by relying on a relatively strong dependence between the gate-to-source and drain-to-source voltages of a current-regulating transistor, e.g., a MOSFET, operating in the linear region. The driver powers all LEDs in a string with a constant current and provides consistent illumination and optimum operating efficiency at low cost over a wide range of input / output voltage and temperature.
Owner:DELTA ELECTRONICS INC
Methods, Apparatus and Computer Program Products for Audience-Adaptive Control of Content Presentation Based on Sensed Audience Attentiveness
InactiveUS20070271518A1Character and pattern recognitionBroadcast services for monitoring/identification/recognitionComputer programMultimedia
Content is presented by sensing attributes of unknown audience members and determining attentiveness of the unknown audience members from the attributes that are sensed. A content presentation device is controlled based on the attentiveness that is determined. Related methods, systems and computer program products are disclosed.
Owner:BELLSOUTH INTPROP COR
Method, apparatus, and program for adaptive control of application power consumption in a mobile computer
InactiveUS20050108075A1Energy efficient ICTPower supply for data processingPolicy decisionResource consumption
A power-aware monitor is provided for controlling the execution of state-unaware applications and optimizing their execution in light of power consumption issues. The power-aware monitor examines application usage to build profiles of resource consumption. When an application starts execution, the monitor determines the state of the battery to influence policy decisions. The monitor maintains a list of rules, which it uses in deciding policy. The user may modify these rules to override default behavior. The rules dictate whether an application executes unfettered, has its I / O, computation, or other activity restricted or delayed, or is completely aborted. When in doubt, the monitor may prompt the user for a decision.
Owner:LENOVO (SINGAPORE) PTE LTD
System and methods for adaptive control of robotic devices
ActiveUS7117067B2Improve efficiencyIncrease the number ofProgramme-controlled manipulatorDigital data processing detailsCommand and controlControl engineering
Methods for operating robotic devices (i.e., “robots”) that employ adaptive behavior relative to neighboring robots and external (e.g., environmental) conditions. Each robot is capable of receiving, processing, and acting on one or more multi-device primitive commands that describe a task the robot will perform in response to other robots and the external conditions. The commands facilitate a distributed command and control structure, relieving a central apparatus or operator from the need to monitor the progress of each robot. This virtually eliminates the corresponding constraint on the maximum number of robots that can be deployed to perform a task (e.g., data collection, mapping, searching). By increasing the number of robots, the efficiency in completing the task is also increased.
Owner:FLIR DETECTION
Adaptive control system for interference rejections in a wireless communications system
InactiveUS6934340B1Improved interference rejectionImprove robustnessSecret communicationMulti-frequency code systemsCommunications systemControl system
An adaptive control system for controlling the effects of narrow to medium bandwidth interferers in a wireless communications system (e.g., wireless LAN devices) by identifying which sub-carriers in a multi-carrier system are located on frequencies that are subject to interfering signals, and using only those sub-carriers that are not subject to interference for communications between wireless communications devices.
Owner:CISCO TECH INC
Method for controlling array antenna equipped with a plurality of antenna elements, method for calculating signal to noise ratio of received signal, and method for adaptively controlling radio receiver
InactiveUS7057573B2Radio wave direction/deviation determination systemsAmplitude-modulated pulse demodulationSignal-to-noise ratio (imaging)Radio reception
Based on a received signal y(t) received by a radiating element of an array antenna including the single radiating element and a plurality of parasitic elements, an adaptive controller calculates and sets a reactance value of a variable reactance element for directing a main beam of the array antenna in a direction of a desired wave and directing nulls in directions of interference waves so that a value of an objective function expressed by only the received signal y(t) becomes either one of the maximum and the minimum by using an iterative numerical solution of a nonlinear programming method.
Owner:ATR ADVANCED TELECOMM RES INST INT
Power system with power converters having an adaptive controller
ActiveUS7667986B2Efficient power electronics conversionDc-dc conversionElectric power systemEngineering
Owner:MYPAQ HLDG LTD
Adaptive control of codebook regeneration in data compression mechanisms
ActiveUS7154416B1Reduce the impactMemory adressing/allocation/relocationCode conversionData compressionSelf adaptive
Adaptive control of codebook regeneration in data compression mechanisms. In one implementation, the present invention provides a means controlling the frequency of codebook updates based on expected performance gains resulting from codebook regeneration. The present invention, in one implementation, employs a mechanism that simulates the expected compression performance of a hypothetically, updated codebook. A compression module compares the simulated compression performance to the actual performance of the codebook used to compress the data, and updates the codebook if a threshold condition is satisfied.
Owner:CA TECH INC
Computer processes and systems for adaptively controlling the display of items
The invention comprises a computer-implemented system and method for refining the order and / or content of a list of items. In one embodiment, the amount of user activity associated with each item displayed to users in a given context is monitored, used is to generate context-specific item weights. The weights for the same item in different contexts may be different. The selection of items included in a list presented to users, as well as the order in which the items in the list are displayed, may be adjusted over time based upon the relative weights associated with the items. This allows the items generating the greatest user interest in a particular context to be presented to first, or otherwise emphasized.
Owner:A9 COM INC
Adaptive noise control system
An active noise cancellation system includes an adaptive filter, a signal source, an acoustic actuator, a microphone, a secondary path and an estimation unit. The adaptive filter receives a reference signal representing noise, and provides a compensation signal in response to the received reference signal. The signal source provides a measurement signal. The acoustic actuator radiates the compensation signal and the measurement signal to the listening position. The microphone receives a first signal that is a superposition of the radiated compensation signal, the radiated measurement signal, and the noise signal at the listening position, and provides a microphone signal in response to the received first signal. The secondary path includes a secondary path system that represents a signal transmission path between an output of the adaptive filter and an output of the microphone. The estimation unit estimates a transfer characteristic of the secondary path system in response to the measurement signal and the microphone signal.
Owner:HARMAN BECKER AUTOMOTIVE SYST
Power system with power converters having an adaptive controller
ActiveUS20080130322A1Easy to operateEfficient power electronics conversionDc-dc conversionElectric power systemEngineering
A power system having a power converter with an adaptive controller. The power system is coupled to a load and includes a power system controller that receives a signal indicating a system operational state of the load and selects a power converter operational state as a function thereof. The power system also includes a power converter with a power switch that conducts for a duty cycle to provide a regulated output characteristic at an output thereof. The power converter also includes a controller that receives a command from the power system controller to enter the power converter operational state and provides a signal to control the duty cycle of the power switch as a function of the output characteristic and in accordance with the command, thereby regulating an internal operating characteristic of the power converter to improve an operating efficiency thereof as a function of the system operational state.
Owner:MYPAQ HLDG LTD
Distributed energy neural network integration system
Owner:ORION ENG
Method and system for training adaptive control of limb movement
InactiveUS20070016265A1Facilitate prescriptionImprove fitMedical simulationElectrotherapyPhysics basedAnimation
Disclosed are methods and systems for a virtual reality simulation and display of limb movement that facilitate the development and fitting of prosthetic control of a paralyzed or artificial limb. The user generates command signals that are then processed by the control system. The output of the control system drives a physics-based simulation of the limb that simulates the limb to be controlled. The computed movements of the model limb are displayed to the user as a 3D animation from the perspective of the user so as to give the impression that the user is watching the actual movements of his / her own limb. The user learns to adjust his / her command signals to perform tasks successfully with the virtual limb. Alternatively or additionally, the errors produced by the virtual limb and / or the responses of the user during the training process can provide information for adapting the properties of the control system itself.
Owner:UNIV OF SOUTHERN CALIFORNIA
Apparatus, Methods and Computer Program Products for Audience-Adaptive Control of Content Presentation
Embodiments of the present invention provide apparatus, methods and / or computer program products for controlling presentation of content. In some method embodiments, a profile is stored for each of a plurality of potential audience members. Presence of a group of audience members of the plurality of potential audience members is detected. Responsive to the detection, a content presentation device is controlled based on collective consideration of the stored profiles of the group of audience members.
Owner:BELLSOUTH INTPROP COR
System and method for allocating power to loads
ActiveUS20060072262A1Batteries circuit arrangementsPower network operation systems integrationEngineeringPower over
A system and method for adaptive control of power among a plurality of loads based on a categorization of the loads as either delayable or non-delayable, wherein the non-delayable loads are preferably supplied power over the delayable loads. In one aspect, the system may be used to allocate limited power from a backup power source.
Owner:SCHNEIDER ELECTRIC IT CORP
Power System with Power Converters Having an Adaptive Controller
ActiveUS20080232141A1Efficient power electronics conversionDc-dc conversionElectric power systemEngineering
A power system having a power converter with an adaptive controller. In one embodiment, a power converter coupled to a load includes a power switch configured to conduct for a duty cycle to provide an output characteristic at an output thereof. The power converter also includes a power converter controller configured to receive a signal from the load indicating a system operational state of the load and enable a power converter topological state as a function of the signal.
Owner:MYPAQ HLDG LTD
Motion control method of lower limb rehabilitative robot
InactiveCN102058464ARealize tracking controlEnhanced awareness of initiativeChiropractic devicesMovement coordination devicesEngineeringActive participation
The invention relates to a motion control method of a lower limb rehabilitative robot. In the method, aiming at different rehabilitation stages of a patient, two working modes of passive training and active training are carried out: under the mode of passive training, the patient is driven by controlling the robot to finish specific motions or motion according to a right physiological gait track; abnormal motions of the patient are completely restrained; and the patient passively follows the robot to do walking rehabilitation training; under the mode of active training, limited abnormal motions of the patient are restrained by the robot; through a real-time detection on joint driving forces generated when the patient acts on the robot in the motion process, human-computer interaction moment is extracted by utilizing an inverse dynamic model to judge the active motion intention of lower limbs of the patient; and the interaction moment is converted into correction value of gait track by utilizing an impedance controller to directly correct or generate the gait training track the patient expects through an adaptive controller, therefore, the purpose that the robot can provide auxiliary force and resistant force for the rehabilitation training can be indirectly realized. By means of the motion control method of the lower limb rehabilitative robot, rehabilitation training motions suitable for different rehabilitation stages can be provided for a dysbasia patient, thereby enhancing active participation degree of the rehabilitation training of the patient, building confidence of the rehabilitation and positivity of the motion, and then enhancing effect of the rehabilitation training.
Owner:SHANGHAI UNIV
Spiking neuron network adaptive control apparatus and methods
ActiveUS20140081895A1Minimizing distance measureSmooth connectionDigital computer detailsNeural architecturesNeuron networkSpiking neural network
Adaptive controller apparatus of a plant may be implemented. The controller may comprise an encoder block and a control block. The encoder may utilize basis function kernel expansion technique to encode an arbitrary combination of inputs into spike output. The controller may comprise spiking neuron network operable according to reinforcement learning process. The network may receive the encoder output via a plurality of plastic connections. The process may be configured to adaptively modify connection weights in order to maximize process performance, associated with a target outcome. The relevant features of the input may be identified and used for enabling the controlled plant to achieve the target outcome.
Owner:BRAIN CORP
Adaptive control of data packet size in networks
An adaptive packet mechanism and method for optimizing data packet transmission through a network connection between a sending node and a receiving node. Current network conditions in the connection are periodically determined wherein the network conditions pertain to the latency and jitter of packet transmission between the sending node and receiving node. The measurements of latency and jitter are used to determine an optimum packet size and an optimum inter-packet interval for transmission of packet data between the sending node and the receiving node and are used in the transmission of data packets from the sending node to the receiving node. Network conditions may be determined by transmission of monitor or data packets and may be determined at either or both of the sending or receiving nodes and the optimum packet size and inter-packet interval are determined by a fuzzy logic analyzer, a neural network analyzer or a combined fuzzy logic / neural network analyzer.
Owner:SMARTPACKETS
Adaptive omni-modal radio apparatus and methods
InactiveUS6934558B1Easily and conveniently identifyIntense competitionMetering/charging/biilling arrangementsAccounting/billing servicesTransmission protocolTransceiver
Owner:ANTON INNOVATIONS INC
User interface for presenting media information
Owner:APPLE INC
Model-free adaptive process control
InactiveUS6055524ALong response delayOvercome limitationsDigital computer detailsDigital dataData miningSelf adaptive
A model-free adaptive controller is disclosed, which uses a dynamic artificial neural network with a learning algorithm to control any single-variable or multivariable open-loop stable, controllable, and consistently direct-acting or reverse-acting industrial process without requiring any manual tuning, quantitative knowledge of the process, or process identifiers. The need for process knowledge is avoided by substituting 1 for the actual sensitivity function .differential.y(t) / .differential.u(t) of the process.
Owner:GEN CYBERNATION GROUP
Adaptive control of operating and body bias voltages
ActiveUS7562233B1Adaptive control of operatingOperating bias voltageEnergy efficient ICTError detection/correctionEngineeringSelf adaptive
Adaptive control of operating and body bias voltages. In accordance with a first embodiment of the present invention, a desirable operating frequency for the microprocessor is determined. Information stored within and specific to the microprocessor is accessed. The information can comprise coefficients of a quadratic approximation of a frequency-voltage characteristic of the microprocessor for a set of body biasing conditions. An efficient voltage for operating the microprocessor at the desirable operating frequency is computed. The microprocessor is operated at the efficient voltage and the set of body biasing conditions.
Owner:META PLATFORMS INC
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