1064 results about "Control period" patented technology

A system for controlling wireless phone usage enables a supervisor to establish user profiles for supervised users of wireless phones across a range of parameters, which are stored in a user profile database. Such parameters can include one or more locations, at which use of the wireless phone is restricted or permitted. In addition, restrictions on phone use, such as cumulative usage time, number of messages or number of bytes, can be provided based upon total phone usage within a specified control period, time periods, dates or days of the week during which phone use is restricted or permitted. One or more lists including numbers or other identifiers that are always-accessible can be provided, and one or more lists including numbers or other identifiers that are never-accessible can also be provided. In the event a call, message or browse does not satisfy predefined criteria, the communication attempt is blocked. Predetermined messages can be played or displayed to the called or calling party, as applicable, when a communication attempt is blocked. Boolean combinations of restrictions and permissive use criteria for the wireless phone can be specified to provide for flexibility when establishing use criteria for the wireless phone.

It is an object of the present invention to provide a charged particle beam extraction method and particle beam irradiation system that make it possible to exercise intensity control over an extracted ion beam while a simple device configuration is employed. To accomplish the above object, there is provided a particle beam irradiation system comprising: a synchrotron for accelerating and extracting an charged particle beam; an irradiation apparatus for extracting the charged particle beam that is extracted from the synchrotron; first beam intensity modulation means for controlling the beam intensity of the charged particle beam extracted from the synchrotron during an extraction control period of an operation cycle of the synchrotron; and second beam intensity modulation means for controlling the beam intensity during each of a plurality of irradiation periods contained in the extraction control period of the operation cycle.

A charged particle beam irradiation system includes measurement means 15 for measuring an accumulated beam charge amount Qm0, the ion beams orbiting in a synchrotron 13, immediately before an extraction control period in an operating cycle of the synchrotron 13; and beam extraction control means 20, 24, 28, 29 for controlling extraction of the ion beams so that extraction of a total of the ion beams is to be completed in time with expiration of an extraction control time Tex which is set in advance based on the measurement Qm0 of the accumulated beam charge amount. When an irradiation apparatus includes an RMW 32, an amplitude of an extraction radiofrequency voltage is controlled according to a ratio Qm0 / Qs0 of the measurement to a reference value of the accumulated beam charge amount and a ratio Tb / Ta of an actual beam extraction time to the extraction control time Tex.

It is an object of the present invention to provide a charged particle beam extraction method and particle beam irradiation system that make it possible to exercise intensity control over an extracted ion beam while a simple device configuration is employed. To accomplish the above object, there is provided a particle beam irradiation system comprising: a synchrotron for accelerating and extracting an charged particle beam; an irradiation apparatus for extracting the charged particle beam that is extracted from the synchrotron; first beam intensity modulation means for controlling the beam intensity of the charged particle beam extracted from the synchrotron during an extraction control period of an operation cycle of the synchrotron; and second beam intensity modulation means for controlling the beam intensity during each of a plurality of irradiation periods contained in the extraction control period of the operation cycle.

It is an object of the present invention to provide a charged particle beam extraction method and particle beam irradiation system that make it possible to exercise intensity control over an extracted ion beam while a simple device configuration is employed. To accomplish the above object, there is provided a particle beam irradiation system comprising: a synchrotron for accelerating and extracting an charged particle beam; an irradiation apparatus for extracting the charged particle beam that is extracted from the synchrotron; first beam intensity modulation means for controlling the beam intensity of the charged particle beam extracted from the synchrotron during an extraction control period of an operation cycle of the synchrotron; and second beam intensity modulation means for controlling the beam intensity during each of a plurality of irradiation periods contained in the extraction control period of the operation cycle.

A system for establishing local control of a space conditioning load includes a switch for controlling a flow of energy for a space conditioning load. Control logic is operatively coupled to the switch, for receiving control parameters associated with a direct load control event from a utility provider. The control logic may also measure room temperature based on received temperature signals and determine if a room temperature is greater a comfort temperature range. The control logic may eliminate operation of a direct load control program if the room temperature is greater than or equal to the comfort temperature range. The control logic may log and signal back to the utility provider that the comfort temperature range is exceeded. The control logic may then restore local control of the switch and initiate a temperature setback control to a thermostat for the remainder of the control period.

There is provided An image projection apparatus comprising: a spatial light modulation element that modulates illumination light by switching the display and non-display statuses of the respective pixels based on pulse width modulation driving to perform gradation expression for each pixel; a light source section able to increase and decrease the amount of illumination light output according to an input controlled variable; a light source control section that periodically controls the light amount of the illumination light output from the light source section; and a projection optical section that projects images modulated by the spatial light modulation element, wherein the light source control section selectively controls the light amount of the illumination light output from the light source section by either one of a first mode in which the controlled variable is changed in a first control period that is shorter than the display period for the spatial light modulation element to display the input image information, and a second mode in which the controlled variable is changed in a second control period that is longer than the first control period.

The present invention is a method and apparatus that utilizes an inertia-free diffraction mechanism to control both phase and rotation of the standing wave pattern that results in super-resolution at unparalleled imaging speeds. In some embodiments of the present inventions, AODs are utilized to control period, phase, and rotation of the SW pattern in contrast to the commonly used mechano-optical principles. This allows 2D (and 3D) super-resolution imagining at high stability and speed not limited by mechanical constraints. The present invention can be utilized, for example, for real time observations of dynamic processes in living cells.

An automatic gain control method and system for use in signal processing of OFDM symbols at a receiver. Two stages of coarse and fine automatic gain control are implemented that adjust different gains in an analog RF processing stage of the receiver. Gain of a low noise amplifier and a mixer are adjusted during a first and coarse automatic gain control stage based on feedback from a digital baseband stage. During a subsequent fine gain control period, the gain of a programmable gain amplifier is adjusted separately for each frequency band used by the OFDM symbols based on a histogram bin that counts the number of output samples of an analog to digital converter whose magnitude falls within certain ranges. Coarse and fine gains are updated after each OFDM symbol.

The invention provides a tractor automatic navigation control system. The system comprises a navigation control device, a steering control unit and an electro-hydraulic proportion steering executing device, wherein the navigation control device receives GPS positioning data in real time, calculates a lateral deviation between a current tractor position and an operation navigation target, calculates a target steering angle of a steering wheel in a current control period according to the lateral deviation and a tractor running speed value measured in real time, converts the target steering angle into a steering control command and then sends the steering control command to the steering control unit; the steering control unit judges whether a steering angle measured value of the steering wheel of the tractor is less than a preset limit value; if the steering angle measured value is less than the preset limit value, the steering control unit compares the target steering angle with the measured value, calculates a PWM duty cycle according to a steering angle difference value and outputs a control signal for driving the electro-hydraulic proportion steering executing device; and the electro-hydraulic proportion steering executing device responds to the PWM control signal and controls the flowing direction and the flowing speed of oil of a tractor steering system by the opening of a valve core of an electro-hydraulic proportion direction valve to make a piston of a steering hydraulic cylinder extend out or retract to deflect the steering wheel to the target steering angle.

The invention relates to a path tracing control method, a path tracing control device, and an intelligent vehicle. The path tracing control method comprises steps that a predetermined target path and the state information of the vehicle are acquired; a main previewing point and an auxiliary previewing point are acquired according to a preset main previewing distance, an auxiliary previewing distance, and a predetermined target path; a first lateral error is determined according to the position of the main previewing point, the position of the vehicle, and the course of the vehicle, and a second lateral error is determined according to the position of the auxiliary previewing point, the position of the vehicle, and the course of the vehicle; main previewing output and auxiliary previewing output are calculated; the weighting summation of the main previewing output and the auxiliary previewing output is carried out to acquire a steering wheel steering angle control quantity of a current control period; the steering wheel steering angle control quantity of the current control period is output to a vehicle control actuator. Based on the accurate description of the curvature characteristic of the predetermined target path, the tracing path of the vehicle is in more accordance with the predetermined target path, and therefore the robustness of the path tracing is improved, and the stability of the path tracing control is enhanced.

The invention discloses a robust dicyclic photovoltaic grid-connected control method based on power feedforward, which mainly comprises three parts: proportion integration (PI) control of exocyclic voltage, dead-beat control of endocyclic robust predictive current and power feedforward control, wherein the exocyclic PI control of the voltage is used for stabilizing the capacitive voltage of a direct-current side; the dead-beat control of the endocyclic robust predictive current is used for carrying out linear prediction on the voltage of a power grid at a next control period and carrying out non-linear prediction on grid-connected current by advanced control so as to obtain the command value of the grid-connected current at the next period; and then, PWM (pulse-width modulation) and grid-connected control are realized by the dead-beat control. According to the robust dicyclic photovoltaic grid-connected control method based on the power feedforward, a photovoltaic grid-connected inverter has higher robustness, wider stability margin and quicker dynamic response, and the requirement of grid-connected running of an inverter is better met.

A hand-shake correction apparatus and method for a camera module for typical use in a mobile device. A camera unit includes an angular velocity sensor for sensing an angular velocity of a hand-shake motion of a camera, a position detection sensor for detecting a current position of an image sensor, and an actuator for actuating the image sensor. An Optical Image Stabilizer (OIS) circuit unit controls the actuator using a multi-rate Proportional Integrate Derivative (PID) control scheme that performs control a plurality of times using a shorter control period compared with existing PID controls for a basic period, in which a reference value is updated according to a control reference value by which the image sensor optimally shifts to correct a hand-shake motion.

The invention discloses a system and a method for controlling the combustion of a mechanical grate incinerator. The system comprises a feed grate control system, an incinerator grate control system, an air volume control system and a temperature control system, wherein the feed grate control system is used for regulating and controlling the feed stroke and the forward-feeding speed of a feed grate in the mechanical grate incinerator by utilizing a proportion integration differentiation (PID) controller; the incinerator grate control system is used for controlling the sliding number of a sliding furnace tile and the turnover number of a turnover furnace tile in an incinerator grate of the mechanical grate incinerator within each control period; the air volume control system is used for regulating and controlling the rotational speeds and the air volume of a primary air blower and a secondary air blower by utilizing the PID controller in the whole combustion process; and the temperature control system is used for regulating and controlling the temperature of the primary air blower and a furnace wall in the whole combustion process. The system can meet the requirements of environment friendliness and power generation, and can reduce the cost.

The invention discloses a heliostat tracking control device, which comprises a main controller and a closed-loop tracking sensor. The main controller comprises a DSP control circuit, a RTC real-time clock, digital signal input and output units, an analog signal input unit, a signal amplifying circuit, a human-computer interface device, a display device, a watchdog circuit, an asynchronous motor, a line of serial port communication interface which carries out the communication with a monitoring computer, and a line of serial port communication interface which carries out the communication with an azimuth angle and altitude angle encoder. The invention further discloses a heliostat tracking control method, the method adopts the open-loop and the closed-loop combined control, the open-loop roughly calculates and adjusts the position of a heliostat and the closed-loop corrects and eliminates the accumulated error till the precise tracking. The heliostat tracking control device has the advantages that the heliostat tracking control device can not have the accumulated error or the failure of the tracking system due to the rainy and cloudy weather. The system adopts the combined control algorithm within the control period, thus achieving the precise tracking of the heliostat. The tracking reaction speed, the power consumption and the cost are low, thus forming a modular structure.

The invention relates to a coated controlled-release fertilizer using crop straws as a main coating material and a production method of the fertilizer. The method comprises the following steps of: preparing straw coating liquid from the crop straws, simultaneously spraying the straw coating liquid and a curing agent to fertilizer granules in different ratios, directly reacting, and curing into a film, and thus obtaining the straw coated controlled-release fertilizer with different water permeability. The produced coated controlled-release fertilizer has accurate nutrient release control performance, and the nutrient release control period can be controlled to be 1 to 12 months; and the film material is biodegradable. Moreover, because a waste renewable plant biomass resource, namely the crop straws is used as the film material, dependency of the coating material on petrochemical resources is reduced, and sustainable development of the coating material is realized. The fertilizer is low in prices and easy to prepare, does not require solvent, and is very suitable for large-scale production and promotion.

The invention relates to a position keeping method of a stationary orbit satellite, particularly to a position keeping method of an electric propulsion stationary orbit satellite, and belongs to the technical field of the orbit control of a satellite. Four thrusters of an electric propulsion system are mounted at the northwest, the northeast, the southwest and the southeast of the satellite back floor. For the four thrusters, the tangential distances and the normal distances relative to a satellite centroid are the same, and the thrust directions pass through the satellite centroid. A position keeping period comprises a one-day orbit determining period and n two-day small control periods, wherein the four thrusters in one small control period are respectively started, and at the same time, the orbit inclination, the flat longitude drifting ratio and the eccentricity ratio are controlled. The position keeping method disclosed by the invention solves the problem of the position keeping of the stationary orbit satellite of the electric propulsion system.

The invention is an eye shield sleeping device that has a strap, a pair of eye shields, a pair of ear covers, a timer, one or more speakers, a microphone, and a voice recognition system. The timer creates an awakening sound when the time on the timer expires. The sound is produced by the speaker mounted inside the ear cover. The user can control the device using commands issued to the voice recognition system. The device can be connected to a media and communication appliance, such as a cell phone, a computer, and a digital player, which can play through the speakers. The voice recognition system can also be used to control a connected appliance. The principal function of the device is to create a restful environment for the user for a controlled period of time. Anticipated applications include naps while traveling and in sleep rooms at work.

In a case where a computing period of a torque ripple compensation section which computes current compensation values Δid and Δiq to be caused to flow into a motor in order to prevent occurrence of a torque ripple in the motor differs from a control period of a current control section which controls a feedback to the motor in such a way that current command values i*d and i*q additionally provided with the current compensation values Δid and Δiq flow into the motor, the microcomputer sets the current compensation values Δid and Δiq to zero when a rotor angular velocity ωre of the motor is equal to or greater than a first threshold value ω1.

The invention discloses a combustion process multivariable control method for a CFBB (circulating fluidized bed boiler), which is realized in the following procedures: in each control period, collecting operational parameters of the boiler through data collecting equipment and storing the operational parameters in a data storage module; utilizing the history data in a memorizer to on-line identify the CARIMA model and present P step future moment predominant values such as process output variable main steam pressure, material bed temperature and flue gas oxygen content through a model on-lineparameter identification module of GPC (generalized prediction control); performing error compensation to the process future moment prediction output through an error estimation module of an LSSVM (least square support vector machine); and referring the reference trace obtained by a trace generator, performing rolling optimization in GPC for the process future moment prediction output, and calculating through the optimized algorithm to enable the process actual output to reach the set value. The method provided by the invention solves the time varying problem of the model parameter, and enables the control system to have stronger robustness.

Disclosed is an active constant power supply apparatus, which rectifies power having various intensities and frequencies without using a high capacity condenser for a smoothing circuit which degrades the power factor of a circuit, and supplies constant power to a load. The active constant power supply apparatus includes an AC power supplier for supplying AC power; a rectifying circuit which receives AC power from the AC power supply unit and rectifies the received power; a driving coil connected in series to the load receiving power from the rectifying circuit; a power switch which switches the current passing through the driving coil and the load on / off; a pulse-type driving signal generator connected to a gate terminal of the power switch to control the switching on / off operation of the power switch; a turn-off decider which generates a turn-off signal when the current flowing along the driving coil has a value higher than the designed value, so as to turn off the power switch; and a pulse width controller which measures the control period ranging from the switch-on time of the driving signal generator to the switch-off time of the turn-off decider, and controls the driving pulse width of the driving signal generator such that the driving pulse width coincides with the control period.

A control unit controls supply of power to a plurality of heating units at predetermined control period T1 that is set by a first unit. A second unit sets power supply time t1 for a first heating unit having largest power consumption within the control period T1 and power supply time t2 for a second heating unit having second largest power consumption. A third unit controls to supply the power to the first heating unit for the power supply time t1 from beginning of the control period T1 and to supply the power to the second heating unit from a point obtained by subtracting the power supply time t2 from end of the control period T1 to the end of the control period T1.

A wind power generation system includes: a wind turbine in which at least one blade is mounted on an axis; a generator for generating multiphase alternating current power by rotation of the axis; and a multiphase power conversion device for performing PWM-control for adjustment and output of generated power of the generator. With the configuration, the PWM-control provides for each phase a control paused period in which no overlap occurs. Thus, the pulse density between the control period and the control paused period of other phases is low, thereby generating high and low density in an inter-phase pulse.

In an anomaly monitoring device, in which an output signal from an encoder is input as an analog input signal via a wiring system, for detecting anomalies in the encoder or the wiring system, provided are a voltage level based device, a pulse number based device and a pulse width based device. The voltage level based device detects anomalies when the voltage level of the analog input signal exists within a prescribed range. The pulse number based device detects anomalies when the difference in the numbers of pulses of digital signals corresponding to the analog input signals is equal to or greater than a prescribed threshold value. The pulse width based device detects anomalies when the pulse width of the digital signals, measured from a combined signal of the digital signals or each of the digital signals, is different from the pulse width in a past control period.

An engine control apparatus for controlling output torque of an engine includes a target determining unit for determining a target value of an injection quantity of fuel on the basis of pressure in a cylinder of the engine. The engine control apparatus further includes an injection control unit for controlling the injection quantity at the target value in a startup injection control period in starting of the engine. The startup injection control period is between a specific startup timing and an end timing where a specific condition is satisfied.

A method and computer program product for managing interruptions including defining an interruption control initiation trigger and defining an interruption control release trigger. An interruption control period is initiation based upon, at least in part, the interruption control initiation trigger. The interruption control period is terminated based upon, at least in part, the interruption control release trigger.

The invention discloses an urban express road intersection public transit priority signal coordinating and timing method which includes the steps: performing dividing and numbering for control areas, and dividing urban express roads under the tidal traffic flow actions into two types of control areas according to a fact that whether intersection downstream roads have bus stops or not; building traffic characteristics data sets; determining initial signal timing schemes comprising initial signal phase structures, initial signal control periods and initial phase green time of intersections; respectively constructing intersection public transit priority signal timing models for the two types of control areas, and calibrating model parameters; determining intersection public transit priority signal timing prioritization schemes, and determining public transit priority green time of the intersections and phase green time of the intersections by the aid of a 'value testing method'; determining an intersection public transit priority signal coordinating and timing scheme. Waiting delay of major traffic flow of the express road at the intersections is greatly reduced, and traffic efficiency is improved.

The invention discloses an MMPC (Multiple Model Predictive Control)-based supercritical unit coordination and control method which comprises the following steps: pre-arranging a plurality of local predictive models according to the nonlinear working condition response of a supercritical unit; selecting a load parameter to serve as a control variable through a model identification method, and obtaining the output increments of all local predictive models through an interpolation formula; and in each control period, piling up the output increments of all local predictive models through a DMC (Dynamic Matrix Control) prediction control algorithm so as to obtain an actual output increment which is used for correcting a feedforward passage. According to the invention, the MMPC method is adopted for the coordination and control of the supercritical unit; a selection method of the control variable, a process variable and a perturbation variable for prediction control is proposed; and a specific construction scheme of the MMPC in a coordination and control system is also provided. The method has the advantages of advancement, strong practicability, good robustness, and quick and stable control effect, as a result, an ideal control effect is obtained.