136 results about "Self tracking" patented technology

A system and method for recognizing features for location correction in Simultaneous Localization And Mapping operations, thus facilitating longer duration navigation, is provided. The system may detect features from magnetic, inertial, GPS, light sensors, and / or other sensors that can be associated with a location and recognized when revisited. Feature detection may be implemented on a generally portable tracking system, which may facilitate the use of higher sample rate data for more precise localization of features, improved tracking when network communications are unavailable, and improved ability of the tracking system to act as a smart standalone positioning system to provide rich input to higher level navigation algorithms / systems. The system may detect a transition from structured (such as indoors, in caves, etc.) to unstructured (such as outdoor) environments and from pedestrian motion to travel in a vehicle. The system may include an integrated self-tracking unit that can localize and self-correct such localizations.

An integrated swept wavelength tunable optical source uses a narrowband filtered broadband signal with an optical amplifier and self-tracking filter. This source comprises a micro optical bench, a source for generating broadband light, a tunable Fabry Perot filter, installed on the bench, for spectrally filtering the broadband light from the broadband source to generate a narrowband tunable signal, an amplifier, installed on the bench, for amplifying the tunable signal. The self-tracking arrangement is used where a single tunable filter both generates the narrowband signal and spectrally filters the amplified signal. In some examples, two-stage amplification is provided. The use of a single bench implementation yields a low cost high performance system. For example, polarization control between components is no longer necessary.

A system for luggage self-tracking / identification during air travel involves a programmable, wireless LAN active transceiver preferably located inside each piece of luggage, with controlled access to the airlines' luggage tracking networks. Prior to a flight, each transceiver is loaded with the passenger's itinerary, and logged in the airline's network at check-in. Each transceiver is uniquely identifiable by the luggage tracking network. An example of a preferred identifier would be the utilization of its Medium Access Control (MAC) and its alphanumeric serial keyword to provide unique and secure registration / identification of the transceiver in the airline's network. During the trip, which may include different stopovers before reaching the final destination, the transceiver is able to automatically compare its programmed itinerary with its current location via wireless access to the airports and aircraft wireless LANs. In this way, the transceiver is able to notify airline personnel if there is a disagreement between its programmed itinerary and its current location, thus preventing misrouting. The transceiver's itinerary can be wirelessly re-programmed by airline personnel / network to account for flight changes or delays. Finally, the transceiver has an internal timer that starts counting down from the expected “total traveling time”, accounting for flight changes or delays. If this timer elapses without the itinerary being complete, the transceiver connects to a wireless access point (hotspot) to report itself as a missing luggage, avoiding a worldwide tracking initiative and speeding up recovery time.

An integrated swept wavelength optical source uses a filtered ASE signal with an optical amplifier and tracking filter. This source comprises a micro optical bench, a source for generating broadband light, a first tunable Fabry Perot filter, installed on the bench, for spectrally filtering the broadband light from the broadband source to generate a narrowband tunable signal, an amplifier, installed on the bench, for amplifying the tunable signal, and a second tunable Fabry Perot filter, installed on the bench, for spectrally filtering the amplified tunable signal from the amplifier. A self-tracking arrangement is also possible where a single tunable filter both generates the narrowband signal and spectrally filters the amplified signal. In some examples, two-stage amplification is provided. The use of a single bench implementation yields a low cost high performance system. For example, polarization control between components is no longer necessary.

The invention discloses a self-tracking servo control system for a flat plate with high integration and high precision. The self-tracking servo control system comprises a monitoring computer, a servo controller, a PWM driver, a direct current motor, a speed measurer, a transmission mechanism, a rotary transformer, a flat plate antenna and a support rotating mechanism, wherein the monitoring computer receives working conditions and issues control commands; the servo controller receives the control commands issued by the monitoring computer, reads antenna angle position information and receiver angle error information, closes a position loop, tracks the closed loop, and outputs analog controlled quantity to the PWM driver; the PWM driver closes a speed lop and a current loop to drive the direct current motor to further drive the flat plate antenna by the transmission mechanism to rotate; the flat plate antenna receives high frequency telemetry signals; the transmission mechanism, the flat plate antenna and the support rotating mechanism jointly constitute an antenna pedestal; the servo controller, the PWM driver, the direct current motor, the speed measurer, and the rotary transformer are installed on the antenna pedestal; the self-tracking servo control system has the advantages of small volume, light weight, low energy consumption and high integration level.

The invention provides an unmanned aerial vehicle directional antenna self-tracking system design method which is used for unmanned aerial vehicle control. According to the method, a GPS receiver is installed on a carrier vehicle to acquire the position and speed of a directional antenna in real time. The tracking target angle of the directional antenna is acquired by a master controller via utilizing the position of the directional antenna and an unmanned aerial vehicle. Position prediction smoothing is realized by utilizing speed of the directional antenna and the unmanned aerial vehicle, and feedforward is increased for azimuth movement when the unmanned aerial vehicle flies over the vertex of the directional antenna. Azimuth angle and pitch angle measuring instruments are installed on the carrier vehicle to measure the current azimuth angle and the pitch angle of the carrier vehicle, and the current angle of the directional antenna is acquired via combination of the measured value of an angle sensor. The control variable is calculated by the master controller according to the difference value of the tracking target angle and the current angle of the directional antenna so that the directional antenna is driven to reach the target position. System mobility and concealment are enhanced, project realization is easy, tracking movement of the directional antenna is effectively smoothed, vertex passing tracking error is reduced and system reliability and adaptability are enhanced.

The invention discloses a method for controlling a PID controller route based on fuzzy control. The method comprises the steps that on the basis of a motor PID controller, a route correcting strategy based on the fuzzy control idea is integrated, fuzzy PID controlled quantities of delta Kp, delta Ki and delta Kd are obtained by detecting deviation and the deviation regulating rate, after the fuzzy PID controlled quantities are received by the PID controller, the fuzzy PID controlled quantities are subjected to defuzzification to be adjusted to be three precise controlled quantities of Kp, Ki and Kd. Accordingly, a motor of self-tracking equipment is controlled, and the purpose of correcting the route is achieved.

The invention provides a self tracking method for a spacecraft dynamic target by a spherical phased array antenna, which aims at providing a simple and reliable tracking method with little hardware resource consumption. The technical scheme comprises steps: radio frequency signals received by four array antenna links form beam forming signals through a DBF weighting module, a difference beam forming module transmits sum / difference beam signals to a rear-end baseband angle error demodulation module for being processed, azimuth error voltage and pitching error voltage are solved, the azimuth error voltage and the pitching error voltage are transmitted to a waveform control computer for being processed, the waveform control computer uses waveform control software to estimate a target incomingwave direction, a two-order digital tracking loop is used to enable a tracking intermediate variable V(Z) and a multi-beam lectronic scanning gain coefficient K0 to be multiplied, a new beam direction theta(Z) is obtained, and finally, the beam direction is updated through the waveform control software of the waveform control computer, after deviation is corrected, the real-time target position is transmitted to a beam forming unit, and self tracking on the dynamic target is completed.

An apparatus and method to improve communications in a wireless communication network. Steps include sending specific information to user equipment or adjacent base stations so that the user equipment and adjacent base stations can determine minimum power requirements and interference levels in sidelink communications. The apparatus includes a localization module with a self-tracking component; a signal-detection component; and a location-estimation component. The apparatus may include a proximity system usable to locate one or more target transmitters and includes a localization module; a proximity-description module; and a proximity-display module. The proximity system may include a proximity advertisement module, which includes an access management component; an ownership management component; and a content management component.

A method is disclosed for establishing communication through free space between a pair of optical communication devices. A divergent beam is transmitted from each of the optical communication devices toward the other. A portion of the received divergent beam is used to create a phase conjugated beam that is returned to the other device. A diffraction grating is dynamically recorded at each devices so as to establish a bi-directional self-tracking optical link between the devices.

The invention provides a method for estimating and accurately tracking the satellite position by using a reflector antenna. The method is different from the conventional communication antenna monopulse self-tracking or program-guided tracking methods. The method is realized by controlling the antenna mechanical axis to perform conical scanning around the satellite. The main steps are as follows: driving the antenna to perform azimuth and pitch scanning, recording the angular position information of the antenna and AGC voltage while scanning, and roughly estimating the satellite approximate position; driving the antenna to point to the satellite approximate position and perform conical scanning around the approximate position by an antenna control unit; according to the angle information and AGC voltage information output by an angle encoder during the scanning process, further estimating the satellite position by data correlation processing and the least squares method, and sending theestimation error to an antenna driving unit to realize the correction of the satellite pointing by the antenna. With the scanning and tracking going on, the method can achieve accurate tracking of satellites.

The invention relates to a 24-hour-service solar photovoltaic power-generating self-tracking system which comprises a driving and supporting device, a solar energy collecting system, a sun azimuth tracking system and a power-generating device; the solar energy collecting system and the sun azimuth tracking system are arranged on the driving and supporting device; the solar energy collecting system collects the solar energy which is supplied for the power-generating device to generate power; the sun azimuth tracking system comprises a monitoring device, a tracking mode conversion control module and a dual-tracking mode control module; the monitoring device is used for monitoring the change conditions of weather so as to facilitate the judgment of the tracking mode conversion control module and sending out instructions to lead the dual-tracking mode control module to start relative tracking mode and control the movement of the driving and supporting device, thereby changing the position of the collecting surface of the solar energy collecting system. The system can collect the change conditions of weather in time, and control and choose the sun azimuth tracking modes according to the change conditions of weather, thereby being capable of improving the sun azimuth tracking accuracy and reducing energy consumption.

Apparatus, system or method to improve communications in a wireless communication network. Steps may include sending specific information to user equipment or adjacent base stations so that the user equipment and adjacent base stations can determine interference levels in sidelink communications. The apparatus may include a location-estimation component interconnected with a self-tracking component and a signal-detection component. The apparatus may include a proximity system implemented using instructions stored in a non-transitory computer readable medium and the proximity system may be usable to locate one or more target transmitters. In some embodiments, the system may include other modules such as a localization module; a proximity-description module; and a proximity-display module. The proximity system may also include a proximity advertisement module, which includes an access management component; an ownership management component; and a content management component.

The present invention acquires self-tracking information obtained by integrating habit information and biological signal information. Based on personal genome information and the acquired self-tracking information, characteristic information about characteristics of a user is acquired, and the acquired characteristic information is output.

Systems and methods of sensing intraocular pressure are described. An example miniaturized intraocular pressure (IOP) monitoring system is provided using a nanophotonics-based implantable IOP sensor with remote optical readout that can be adapted for both patient and research use. A handheld detector optically excites the pressure-sensitive nanophotonic structure of the IOP-sensing implant placed in the anterior chamber and detects the reflected light, whose optical signature changes as a function of IOP. Optical detection eliminates the need for large, complex LC structures and simplifies sensor design. The use of nanophotonic components improves the sensor's resolution and sensitivity, increases optical readout distance, and reduces its size by a factor of 10-30 over previous implants. Its small size and convenient optical readout allows frequent and accurate self-tracking of IOP by patients in home settings.

Embodiments of the present invention provide a voltage regulator. The voltage regulator includes a driving mechanism coupled to an output node (VREG), wherein the driving mechanism is configured to provide current to the output node to sustain a predetermined voltage on the output node. In addition, the voltage regulator includes a boost circuit coupled to the output node, wherein the boost circuit is configured to drive an additional current onto the output node to reduce fluctuations in the output node voltage when a load coupled to the output node requires a transient switching current that is faster than the loop response time of the driving mechanism. Furthermore, the boost circuit is biased using a self-tracking mechanism to provide accurate duration and level of the current to the output node in a transient switching event.

The invention discloses a solar thermal collector which comprises a thermal collection pipe, a framework, a reflecting plate and a reflecting plate rotation control device; the reflecting plate is positioned on the back side of the thermal collection pipe, and a focal axis of the reflecting plate is coincident with the axis of the thermal collection pipe; the reflecting plate is used for gathering the solar energy onto a thermal absorbing body of the thermal collection pipe; the reflecting plate rotation control device is used for driving the reflecting plate to rotate by taking the focal axis as a center, so that the reflecting plate can rotate along the change of sunshine. The invention further discloses a method for converting solar energy into mesothermal heat energy by utilizing the solar thermal collector, so that the self tracking of sunshine can be realized, the problems of common tank type, tower type, butterfly type, Fresnel type thermal collection modes are high in cost, and incapable of combining with a factory building and the problem that the non-tracking focusing mode is small in focusing ratio can be solved, 4-20 times of solar focusing ratio can be realized, solar energy is efficiently converted into mesthermal heat energy to obtain a stable mesothermal heat source of 100DEG C-300DEG C.

A wind turbine with a drive train placed partly or entirely in a nacelle of the wind turbine is provided. The drive train includes an epicyclical gearbox including at least one gear stage having a plurality of planet gears meshing with a sun gear and / or an annulus gear. The gearbox partly or completely speed-up the rotation speed of a rotor of the wind turbine to at least one generator of the wind turbine. The wind turbine is characterized in that the drive train further includes at least one locally radial self tracking bearing for enabling the rotation of the rotor in relation to a nacelle structure of the nacelle.

The invention relates to a dual-frequency duplex full-simultaneous single-pulse self-tracking satellite communication feed source. The dual-frequency duplex full-simultaneous single-pulse self-tracking satellite communication feed source simultaneously has the functions of Ku-band uplink transmission, Ku-band downlink single-pulse self-tracking, Ka-band uplink transmission and Ka-band downlink single-pulse self-tracking for satellites. The feed source adopts a dual-band speaker (1), a Ku-band TE21 mode coupler (2), a Ka-band TE21 mode coupler (3), a six-port lantern splitter (4), a Ku-band orthogonal mode coupler (5) and a Ka-band circular polarizer (6); a Ku-band differential mode, a Ka-band differential mode, a ku-band sum mode and a Ka-band sum mode are separated in sequence, and then abeamforming network is used for achieving the composition of a sum and difference beam to meet the needs for satellite communication in motion antenna feeder double frequency and full-simultaneous single-pulse self-tracking.

The invention provides an airborne antenna high-precision pointing tracking method based on strapdown flight attitude stability tracking. According to the method, firstly, a strapdown flight attitude system completes the initial alignment, secondly, the strapdown flight attitude system enters an inertial navigation state, when satellite tracking signals can be received, the trapdown flight attitude system enters a combined navigation state, and when the satellite tracking signals are interrupted, the strapdown flight attitude system uses an airplane body state just before the satellite tracking signal interruption as the initial state for re-entering the inertia navigation state; the orientation, altitude and polarization angle dial values required by the correct satellite tracking by an airplane airborne antenna are obtained according to the airplane orientation angle, the satellite positioning longitude and the like, further, the airborne antenna is driven to rotate to the corresponding dial value, and the goals of isolating the airplane body movement and aligning the airborne antenna with the satellite can be realized. The airborne antenna high-precision pointing tracking method has the advantages that the problems of poor precision and high dependence of the program tracking are solved, the problem of low availability of the single-pulse self tracking is also solved, and the new research direction is provided for the airborne antenna high-precision pointing tracking.

The invention discloses an investment and wealth management risk prevention and control system, which includes an online learning module, a risk type evaluation module, a risk control ball game module, an investment tool library, a risk case library, a member center module, a unified interface module, a risk prevention and control module, an asset Configuration module, risk prevention and control artifact module (including age financial planning artifact module, pension financial planning artifact module, target financial planning artifact module, comprehensive financial planning artifact module, asset allocation diagnostic artifact module and investment risk control officer diagnostic artifact module) and special topics Report generation module; the present invention discloses a method for preventing and controlling investment and financial management risks, including establishing a financial management risk control concept, self-diagnosis and analysis of risk control, investment and financial risk control learning, investment and financial risk control practice, and self-tracking risk control adjustment. The system and method of the present invention focus on asset allocation and risk prevention and control, and provide Internet users with investment and financial management risk prevention and control services.

The present invention discloses a cup-type distribution photovoltaic power generation self-tracking system and a control method. The system comprises a cup-type structure and a control unit. The cup-type structure comprises a first stepping motor arranged on a base. The first stepping motor drives an upper cylinder to rotate. A second stepping motor is arranged in the upper cylinder. Through a conical-tooth rotating mechanism, a solar panel is driven by the second stepping motor to conduct the pitching movement via a support rod. The four edges of the solar panel are provided with photosensitive transistors. The control unit comprises a CPU. The photosensitive transistors are connected with the CPU. The differential analysis and calculation is conducted on the switching values of the four photosensitive transistors by the CPU. The CPU respectively controls the first stepping motor and the second stepping motor via a motor driver, namely drives an azimuth-angle stepping motor and an elevating-angle stepping motor to drive a mechanical mechanism to rotate. In this way, the solar panel is enabled to track the sunlight in an orientation highest in illumination intensity all the time. The electric energy generated by the solar panel is delivered to a battery via a battery converter, and then the electric energy is used for powering up the control unit, the stepping motors and external loads by the battery. According to the technical scheme of the invention, the power generation efficiency of solar photovoltaic panels is effectively improved.

A maneuvering target tracking control system based on a Kalman filter comprises an antenna control unit, an antenna drive unit and an antenna pedestal. In a tracking mode, the antenna control unit estimates the angular velocity of a maneuvering target through the Kalman filter according to the received angle error of a receiver and the real-time angle position of an antenna, so that feedforward compound control is realized, the control quantity is output to the antenna drive unit, the antenna drive unit controls the antenna pedestal to rotate according to the control quantity until the angle error of the receiver is zero, and thus antenna tracking of the maneuvering target can be achieved. According to the maneuvering target tracking control system based on the Kalman filter, the Kalman filter is used for estimating obtained target angular velocity information in a self-tracking antenna servo system so that the feedforward compound control can be realized, on the basis that system stability is not affected, the dynamic lag of the system is reduced, the tracking precision of the system is greatly improved, and high-precision control over the self-tracking antenna servo system is achieved.

The invention discloses a synchronous and in-time self-tracking self-compensation method, which is characterized by comprising the following steps that: 1) a reference clock data acquisition module receives an external signal, digitalizes the received signal and simultaneously performs advanced fault tolerance judgment on an externally input synchronization signal; 2) if the externally input synchronization signal is judged to be correct, the reference clock acquisition module generates a corresponding internal pulse and acquires and stores crystal oscillation signals at different temperatures; 3) the reference clock acquisition module performs signal decomposition at an equal interval according to an acquired current value and a sampling interval, divides the number of sampling points ina unit time by the current value, and uniformly distributes a remainder into the sampling interval as a synchronous sampling pulse; and 4) after the step 3) is finished and when external reference time input is invalid, stored reference information is extracted according to temperature information.

The invention provides a self-adaption solar tracking disaster prevention generating set and a control method. The self-adaption solar tracking disaster prevention generating set and the control method comprise a solar panel, a storage battery pack, a solar charge controller, a supporting device, a solar tracking device, and a disaster preventing device. The solar tracking device comprises two pairs of sensors, horizontal sensors are a pair of sensors which are arranged on a vertical side, and pitch sensors are a pair of sensors which are arranged on a horizontal side. A tracking disaster prevention controller receives information sent by the two pairs of sensors. The supporting device comprises a fixed ring, a horizontal rotary ring and a pitch rotary shaft. The pitch rotary shaft is connected with the horizontal rotary ring, and the pitch rotary shaft is connected with the solar panel. The self-adaption solar tracking disaster prevention generating set and the control method design a method and a device for detecting and controlling, can simply and effectively achieve solar self-tracking, and automatically changes an angle to lower the hazard of wind and snow disaster damages. Accordingly, the generating set is long in service life and high in efficiency.

A wind turbine with a drive train placed partly or entirely in a nacelle of the wind turbine is provided. The drive train includes an epicyclical gearbox including at least one gear stage having a plurality of planet gears meshing with a sun gear and an annulus gear. The gearbox is used to transfer and speed-up the rotation of a rotor of the wind turbine, as applied to at least one generator of the wind turbine. The drive train further includes at least one locally radial self tracking bearing for enabling the rotation of the rotor in relation to a nacelle structure of the nacelle. The self tracking bearing includes bearing elements for locally transferring loads in both radial directions between one or more bearing rings.

The invention relates to a focus self-tracking stage follow spotlight system, which comprises a follow spotlight, an image acquisition device, an image processor, two PID controllers and a servo device, wherein the image acquisition device is used for acquiring a stage scene image in real time; the image processor is used for processing the stage scene image to obtain an image area of an actor andextracting the mass center of the actor; the two PID controllers are used for receiving deviation information, measured through the image processor, of a mass center position of the actor and an initial position, and calculating and outputting a rotation angle output value of the servo device; the servo device is used for controlling and adjusting a rotation angle of the follow spotlight; the image processor determines a real-time position of the mass center of the actor and the initial position according to the stage scene image acquired through the image acquisition device and feeding a position deviation between the real-time position and the initial position into the two PID controllers for calculating and outputting the rotation angle output value; and the servo device receives the rotation angle output value to control the rotating action of the follow spotlight, thereby achieving real-time tracking of the actor through the follow spotlight.

The invention relates to a satellite Ka-frequency-band receiving channel based on single-pulse 0 / pi modulating. The satellite Ka-frequency-band receiving channel comprises a low noise amplifier, a filter, a 0 / pi modulator and a combiner harmonic mixer; after a sum signal is firstly amplified through the low noise amplifier, out-of-band-signal clutter suppression is carried out on the sum signal through the filter, and the sum signal enters one input end of the combiner harmonic mixer; after a different signal is sequentially amplified through the low noise amplifier, out-of-band-signal clutter suppression is carried out on the different signal through the filter, and after 0 / pi phase modulation is carried out through the 0 / pi modulator, the different signal enters the other input end of the combiner harmonic mixer; signal adding is firstly carried out on the sum signal and the different signal inside the combiner harmonic mixer to form one channel of signal, then down conversion is carried out to generate intermediate frequencies to output the signal, and single-channel transmission is achieved. The satellite Ka-frequency-band receiving channel has the advantages of being low in noise factor, high in carrier suppression, small in size, high in reliability and high in complex space environment adaptability, and can reliably work for a long time in a satellite self-tracking system.