60 results about "Hour angle" patented technology

A Photovoltaic panel support base rotating simultaneously around two axes, i.e. around an horizontal axis (North-South direction) for the continuous correction of the swivel angle (β), and around a vertical axis (East-West direction) for the continuous correction of the hour angle (ω), the solar deviation (δ) and the azimuthal surface (γ). The assembly comprises the tower (1), the base (2) with round profile, used for the anchorage and the seat of the assembly, the first drive mechanism (3) with ball bearings (16) for the rotation of the upper part around a vertical axis, the cantilevers' support assembly (4) of V shape, the rod (5), the second mechanism (7) for the rotation of the photovoltaic panels plane around an horizontal axis, the rotation axis (6) of the photovoltaic panels plane, the beams (8) of changing thin walled profile H and the series of transverse thin walled beams (9) of U profile. The frames of the photovoltaic panels rest on the frame formed by the U-shaped beams. The strong wind which falls at the photovoltaic panel plane is received and transmitted to the inner part of the construction, from one hand by the beams assembly (8) of shape H and from the other by the V-shaped assembly of the cantilevers (4). The strong forces' flow to the increasing profiles of the two assemblies (8) and (4) significantly decreases their strength to the inner part of the construction and as a result the two rotating drive mechanisms (3) and (7) substantially receive minimum dynamic stressing having the form of contact voltages (Hertz) created to their ball bearings (16). The electric motors of the two rotation mechanisms are driven by means of satellite control in order for the combination of β, ω, δ and γ to provide the instantly desired result cos θ=1 or Θ=0, i.e. the incident solar radiation to always be vertical with regard to the panels plane.

The invention discloses a solar tracker for water surface floating photovoltaic power generation. The solar tracker includes a plurality of floating type photovoltaic arrays arranged on water surface; photovoltaic assemblies are fixed on the floating type photovoltaic arrays; the side edge of each floating type photovoltaic array is provided with an adjustment water tank; the adjustment water tank is connected with a water pump; and the water pump is connected with a controller. According to the solar tracker of the invention, the quantity of water in the adjustment water tank can be adjusted through the water pump, so that gravity or buoyancy can be changed, the adjustment water tank drives the floating type photovoltaic array to move, so that an included angle between the plane of the photovoltaic assembly and a horizontal plane can be controlled, and therefore, the photovoltaic assembly can track solar altitude angles or solar hour angles in real time. With the solar tracker adopted, the problems of high cost and difficult maintenance brought about by electric machinery and transmission mechanisms adopted by an existing solar tracker can be solved.

A tracking system for reflecting electromagnetic radiation from a source to a target area, having at least one reflecting surface or mirror mounted to a support that fixes the reflecting surface orientation to focus electromagnetic radiation on the target area when the reflecting surface is at a first location at a first predefined time. The system has a path with at least the first location and a second location. The reflecting surface is movable along the path to maintain focus on the target area. The reflecting surface may have an orientation with a fixed declination angle and fixed hour angle. The source may include a moving source such as the Sun.

The invention discloses a sidereal hour angle based attitude control method. The method comprises S1) a Julian century corresponding to present onboard time of a satellite is obtained; S2) a sidereal hour angle is calculated; S3) an attitude conversion quaternion between a track coordinate system and an inertia coordinate system is obtained by calculation; S4) an attitude quaternion, relative to a track system, of a satellite body system is obtained by calculation; S5) an Euler angle of the satellite body system in a pitching-rolling-yawing turn order is calculated, and an attitude determining angle based on star sensor information is obtained; S6) a PD control algorithm is executed, and a control moment is obtained by calculation; and the steps S1) to S6) are repeated to realize autonomous continuous navigation and attitude control of the satellite. According to the invention, autonomous navigation and attitude control for the aircraft position are carried out only by calculating the sidereal hour angle, the problem that ground or GNSS measuring track information cannot be obtained in an abnormal state is solved, autonomous management of the satellite is realized, and the reliability and survival capability of the satellite are improved.

The invention belongs to the technical field of solar photovoltaic power generation, and particularly relates to a roof solar energy concentrating power generation system. The roof solar energy concentrating power generation system is characterized by including a support which comprises a support frame and a tilting center jack stay and two rotating centre lines of a tilting support central axis and a concentrating unit central axis, wherein the tilting center jack stay is used for installing a concentrating power generation module, the tilting support central axis is used for facing the north-and-south direction, and the concentrating unit central axis is used for facing the east-and-west direction; the tilting support central axis and the concentrating unit central axis form an hour angle coordinate system with the geocenter serving as an origin, the tilting support central axis serving as a polar axis, and the concentrating unit central axis serving as a declination axis; and the support tracks the change of hour angles of the east-and-west direction of the sun by rotating around the polar axis and changes the incident angle of light by rotating around the declination axis. The roof solar energy concentrating power generation system utilizes the tracking support of an hour angle coordinate system structure so that the back and forth movement of an axial motor is reduced, and the reliability of the system is improved, thereby being particularly applicable to roof solar energy.

The invention provides an intelligent sun tracking method. The latitude, the sun declination and the hour angle of the geographical position of a local place are obtained according to a GPS satellite data obtaining module, a sun elevation angle and a sun azimuth are calculated through an equation, and a motor is driven to enable a solar panel to track the sun so as to realize active tracking; and then illumination intensities in different directions are obtained according to illumination sensors, the illumination intensities are compared and analyzed, the motor is further driven for fine adjustment so as to realize passive tracking, the solar panel is enabled to track the sun more accurately and maintains vertical to sunshine in real time, and the problem of low sun tracking precision in the prior art is solved.

The invention provides a system and a method for three-dimensional attitude determination for an aircraft. The system comprises an observation module, a model establishment module, a data query module, a data processing module, and an attitude solution module, wherein the observation module is used for measuring the light vibration directions of skylights in two mutually vertical directions in real time and automatically by virtue of a sky scattered light polarization character measurement system; the model establishment module is connected with the observation module and used for establishing the body coordinate system and the equatorial coordinate system of the aircraft in a computer; the data query module is connected with the observation module and used for obtaining the declination and the Greenwich hour angle of the sun at an observation time; the data processing module is connected with the observation module, the model establishment module and the data query module, and used for performing transformation processing on the data obtained by the observation module and the data query module in the established model coordinate system; and the attitude solution module is connected with the data processing module and used for establishing an equation set by virtue of the data output by the data processing module, solving and outputting a result.

This invention relates to a clock type solar energy simple tracking rotation device. It includes solar energy heat collecting board, moving support for assembling the solar energy heat collecting board, base, vertical shaft connecting to the base, rotating spigot shaft matching the vertical shaft and clock mechanism which undertakes solar energy hour angle tracking control. Transmissions are respectively arranged on the moved rotating arm and fixed base. They control electric engine to output torque through clock power source and controlling element. The torque drives moving support and solar energy heat collecting board to carry out solar energy hour angle reciprocating tracking rotation along the vertical shaft. It makes the moment of resistance and driving power dissipation lowest. This invention is lighter and smaller. It is adequate for portable and movable equipments.

The invention discloses a heavenly body shooting method. The method comprises that a terminal obtains a heavenly body image corresponding to standard time (ST) and an hour angle of a to-be-observed heavenly body, corresponding to the ST, of the terminal in at least two ST within a preset time period; according to the ST and the hour angle of the to-be-observed heavenly body, corresponding to the ST, of the terminal, the hour angle difference between each ST and the initial ST is calculated; and according to the hour angle difference between each ST and the initial ST, the terminal overlaps the heavenly body images corresponding to the ST to obtain a final heavenly body image. The invention also discloses a heavenly body shooting device.

The invention relates to an equatorial telescope bracket which comprises a base, a hour angle mechanism and a deflection angle mechanism, wherein the hour angle mechanism is connected with the base and driven by a latitude regulating mechanism to rotate around a latitude shaft; the deflection angle mechanism is connected with the hour angle mechanism and manually regulated or driven by a hour angle driving mechanism to rotate around a hour angle shaft; the deflection angel mechanism is connected with a connecting lens cone support plate; the support plate can be manually regulated or driven by a deflection angle driving mechanism to rotate around a deflection angel shaft; an independent hour angle position detection mechanism and deflection angle position detection mechanism are respectively arranged in the hour angle mechanism and the deflection angle mechanism; the hour angle position detection mechanism and the deflection angle position detection mechanism are matched to form a dual encoder and connected with a control unit to form a closed-loop control system; and hour angle and deflection angle clutch mechanisms are arranged in the hour angle mechanism and the deflection angle mechanism. The equatorial telescope bracket provided by the invention has the advantages of simple and compact structure, convenience in assembly and maintenance, convenience in operation and high accuracy, has the manual and automatic regulating functions and can be widely applied to astronomy and other engineering fields which need to carry out angel measurement.

The invention discloses a novel equatorial telescope which comprises a base, an hour angle mechanism, a drift angle mechanism and the like. An hour angle worm gear and a drift angle seat are arranged on an hour angle shaft in a sleeving mode respectively, a fit clearance of the hour angle worm gear and the hour angle shaft is in accordance with that of the drift angle seat and the hour angle shaft, an hour angle shaft worm is fixed on a set position of the drift angle seat and meshed with the hour angle worm gear, when the hour angle worm gear is locked with the hour angle shaft under the action of a clutch locking mechanism, the hour angle worm rotates around the hour angle worm gear, and therefore the drift angle seat is driven to rotate around the hour angle shaft. According to the novel equatorial telescope, the hour angle worm gear and the drift angle seat are arranged on the hour angle shaft in a sleeving mode respectively, and the fit clearance of the hour angle worm gear and the hour angle shaft is in accordance with that of the drift angle seat and the hour angle shaft; due to the fact that only one type of the fit clearance exists, accumulation of fitting errors does not exist, and therefore the bearing capacity of the equatorial telescope is increased, precision of celestial body tracking is improved, and the stability is improved.

The invention provides a sunlight polar axis type automatic tracking device, comprising a solar hour angle tracking mechanism, a declination angle tracking mechanism and a sunlight condenser inclining toward sunlight, wherein a light receiving face of the condenser is provided with a sunlight signal collector; the lower end of the condenser is fixed by a multi-section type axial connection structure; and the multi-section type axial connection structure provides degrees of freedom for the condenser for rotating a solar hour angle and adjusting a declination angle. Through adoption of the sunlight polar axis type automatic tracking device, designed on the condition that a light receptor is stationary, sunlight signals which are input at real time can be processed and a corresponding instruction is output according to a processing result, so that an omnibearing high-accuracy sunlight automatic tracking function is realized. By utilizing a method for manufacturing a slide channel according to a radian of a running track of the sun every day, the working time of a vertical motor is greatly reduced and the energy source is saved.

A photovoltaic panel tracking device with high tracking precision comprises a mounting angle adjusting device, worm gear reducers, a first motor, a rotation shaft, a shaft and a photovoltaic panel. The first motor is fixedly mounted on the first worm gear reducer, one end of the rotation shaft is connected with an output shaft of the first worm gear reducer through a coupler and penetrates through a bearing block, the middle of the shaft is mounted on the rotation shaft, two ends of the shaft are mounted on the bearing block, the bottom of the photovoltaic panel is fixed on the bearing block, a second motor is fixedly mounted on the second worm gear reducer, an output shaft of the second worm gear reducer is connected with a first synchronizing wheel, a lead screw penetrates through an extension platform with a threaded hole, a second synchronizing wheel is mounted above the threaded hole of the extension platform, a nut screwed with the lead screw is arranged in the second synchronizing wheel, the top end of the lead screw is hinged to a sliding shaft, the sliding shaft is mounted in sliding rails on two sides of a sliding rail device, and the top end of the sliding rail device is fixedly mounted at the bottom end of the photovoltaic panel. The photovoltaic panel tracking device can realize real-time tracking in a solar hour angle direction and a solar declination angle direction, and is high in tracking accuracy, stable in mechanism operation and simple in structure.

The invention discloses a sun tracking correction method and a sun tracking correction device based on the motion law of the sun and image acquisition. The method comprises the following steps: the declination angle Delta, the day angle Beta and the hour angle Omega of the sun in the local area are calculated according to the local time and the motion law of the sun; the altitude angle Alpha and the azimuth angle Gamma of the sun are calculated according to the latitude information, the declination angle Delta and the hour angle Omega, and the location of the sun is judged; a holder rotates to a specific position under control; a camera collects an image of the sun and processes the image, and calculates the deviation Sigma; and the camera feeds the deviation Sigma back to the holder, the holder rotates to correct the image so as to finely adjust the location of the sun, and thus, the sun's trajectory can be tracked in real time. A sun shading board is designed, which can shade a sun area to protect the camera while collecting a panoramic image of the sky. According to the invention, the sun image is corrected by calculating the deviation Sigma. The error influence brought by a mechanical device after long-time operation is reduced greatly. The sun's trajectory can be tracked effectively and accurately. The length of time when the sunlight is always perpendicular to the contact surface of solar equipment is increased. The utilization rate of sunlight is improved.

The invention relates to a sunlight shadow simulation device of a solar array, comprising an equator fixing plate, an hour angle turntable model plate, a solar array model plate, a geographical coordinate plane model plate and a parallel light source. The hour angle turntable model plate is arranged on the equator fixing plate and rotates around a rotating shaft perpendicular to the equator fixing plate, the solar array model plate is arranged on the geographical coordinate plane model plate which is arranged on the hour angle turntable model plate, the solar array model plate and the hour angle turntable model plate can singly rotate, the rotating shafts of the solar array model plate and the hour angle turntable model plate are mutually parallel, the geographical coordinate plane model plate and the array model plate rotate together along the hour angle turntable model plate, an included angle between the geographical coordinate plane model plate and the equator fixing plate is the complementary angle of the latitude of a simulation site, an included angle between the solar array model plate and the geographical coordinate plane model plate is equivalent to an included angle between the solar panel on a simulation site and the ground, and an included angle between parallel light emitted by the parallel light source and the equator fixing plate is preset according to experimental requirements.

The present invention relates to a real-time solar radiation amount detection method and system. The method comprises: obtaining a sun declination angle, an hour angle and a region latitude of a current position; calculating a parallel distance between a latitude circle center corresponding to the region latitude and the current position and calculating a centre distance between a solar radiationpoint and the center of the latitude circle corresponding to the region latitude according to the region latitude, the sun declination angle, a preset atmosphere depth and a preset earth radius; calculating a radiation distance between the solar radiation point and the current position according to the parallel distance, the center distance and the hour angle; obtaining a direct solar radiation amount received by the current position according to the radiation distance, a preset initial solar radiation amount and a preset attenuation coefficient; and obtaining a solar radiation amount according to the direct solar radiation amount and a preset proportion, and calculating the sum of the direct solar radiation amount and a solar scattering amount to obtain a real-time solar radiation amountand output the real-time solar radiation amount. Therefore, the real-time solar radiation amount detection method and system can accurately detect a real-time solar radiation amount at any moment at any place, and the accuracy is high.

The invention discloses a method for forecasting and correcting star-sensitive slow-varying errors for a geostationary orbit satellite. The method mainly comprises the following steps: 1, determining an error according to a load calibrated attitude, and calculating an attitude measurement error of a star sensor; 2, calculating a measurement error in a star sensor measuring system according to an installation matrix of the star sensor; 3, fitting a slow-varying error of the star sensor by the measurement error data by virtue of a segmented multi-order Fourier function; 4, calculating fixed star time differences at a forecast date and a calibration date according to a transformational relation between local time and sidereal hour angle; 5, forecasting the attitude measurement error of the star sensor by utilizing the fitted slow-varying error of the star sensor; and 6, calculating the corrected attitude determination angle according to a measurement model of the star sensor. According to the method disclosed by the invention, high-precision attitude reference can be provided for image navigation and registration, and the image registering precision of an optic remote sensing satellite can be effectively improved.

Disclosed is a novel photovoltaic-panel two-dimension-motion control system driven by a single motor. The system includes a PLC installed in a control box. The PLC controls a solar-hour-angle tracking mechanism. The solar-hour-angle tracking mechanism is a rotation mechanism which is parallel to the rotation axis of the earth. The solar-hour-angle tracking mechanism includes a stepping motor. An output shaft of the stepping motor is connected with a speed reducer. An output shaft of the speed reducer is connected with a driving shaft parallel to the rotation axis of the earth. A photovoltaic panel is installed on the driving shaft. A rotation nut push block used for driving a rotation nut to rotate is also installed at the end part of the driving shaft. A lifting screw is installed in an internal threaded hole of the rotation nut in an engaging manner. The top end of the lifting screw is installed at one side of the bottom part of the photovoltaic panel. The PLC is also connected with a coder in which the motion frequency of the stepping motor is stored. A power amplifier is connected between the coder and the stepping motor. In the photovoltaic-panel two-dimension-motion control system driven by the single motor, the rotation nut of the pitching mechanism is driven to rotate while the driving rotation is rotating so that the lifting screw supports the pitching of the photovoltaic panel in an ascending and descending manner.

The invention relates to an equatorial telescope, in particular to an equatorial telescope locking device. The equatorial telescope locking device comprises a deflection angle locking handle, a deflection angle locking block, a copper backing, a deflection angle worm wheel joint circle, a declination axis joint circle, a tensioning block A, a tensioning block B, a hour angle locking handle, a lens barrel base, a deflection angle base, a deflection angle worm, a deflection angle worm wheel, an hour angle base, an hour angle worm, an hour angle worm wheel, an hour angle base bearing, a declination axis and a right ascension axis, and the equatorial telescope locking device has the advantages that the design is reasonable, the structure is ingenious, and by designing the tensioning block A and the tensioning block B, the deflection angle worm wheel and the right ascension axis and the hour angle worm wheel and the declination axis are matched more closely, so that the precision of the equatorial telescope is improved.

The invention relates to a solar electrical energy generation technology, and discloses a solar-powered tracking device. The solar-powered tracking device comprises an oblique shaft, wherein a front shaft sleeve is arranged at the front end of the oblique shaft; a back shaft sleeve is arranged at the back end of the oblique shaft; the back shaft sleeve is movably connected with support rods; the other ends of the support rods are movably connected with back bases; the oblique shaft is provided with bearing rods; solar panels are fixed at the upper ends of the bearing rods; pin shafts are connected between the bearing rods and the oblique shaft; a connecting rod is movably connected to the lower ends of the bearing rods; a roller is arranged on the lower end part of the connecting rod; the front shaft sleeve is connected with a fixed wheel; the fixed wheel is provided with a central hole and a T-shaped annular groove; the oblique shaft passes through the central hole; and the roller is arranged in the T-shaped annular groove. According to the solar-powered tracking device, the change of the sun height can be tracked when the sun rises in the east and sets in the west during adjustment of a solar energy hour angle and a solar energy elevation angle, so that the light absorptivity is increased.

The invention discloses a sterling solar power generation system capable of all-dimensionally tracking the trajectory of the sun. The trajectory of the sun is all-dimensionally tracked by tracking an hour angle and a declination angle of the sun. The system mainly comprises a main rotating mechanism, a pitch regulation mechanism and a sterling motor. Compared with the conventional mode of tracking an altitude angle and an azimuth angle of the sun, the mode of tracking the hour angle and the declination angle of the sun has the advantage that the number of rotation times of the motor is greatly decreased. A gear and rack transmission mode is adopted for the declination angle, so that the high regulation accuracy and stability of the declination angle are ensured. The system is simple in structure and high in tracking accuracy.

The invention discloses a polar axis calibration mechanism of an equatorial telescope and a calibration method of the polar axis calibration mechanism. According to the polar axis calibration mechanism of the equatorial telescope, the equatorial telescope comprises a base, an hour angle assembly, a drift angle assembly, a latitude adjusting mechanism connected with the hour angle assembly, a horizontal direction hand wheel arranged at the lower end part of the base, and an hour angle locking handle wheel arranged at the tail end of the hour angle assembly; the polar axis calibration mechanism comprises a mounting plate, a connection seat, a polar axis lens and a gradienter; one end of the mounting plate is fixedly arranged at one side part of the drift angle assembly; the connection seat is connected with the other end of the mounting plate; the polar axis lens is arranged in the mounting plate and the connection seat in a manner of vertically penetrating and can be rotated in the mounting plate and the connection seat; the polar axis lens is internally and fixedly provided with a dividing plate with clock scales; the gradienter is fixedly arranged on the upper end face of the connection seat. The calibration mechanism is simple and reasonable in structure; the calibration of a polar axis can be rapidly and conveniently realized.

The invention discloses a method for simultaneously detecting shadows of a building roof, a building wall and the ground. The method is implemented according to the following steps. The method comprises the following steps: firstly, calculating a solar altitude angle and a solar azimuth angle at the moment according to the geographic latitude of the place where the digital building model is located, the solar declination (which is an included angle between an equatorial plane of the earth and a connecting line of the sun and the center of the earth) of the day and a solar hour angle (which isan angular distance from a celestial meridian circle of an observation point to a time circle where the sun is located); secondly, calculating the boundary of a shadow area projected on the ground according to the solar altitude angle and the solar azimuth angle; secondly, determining a shadow area boundary projected on the roof by introducing vector data into the DBM; and finally, combining and analyzing the shadow area boundary on the ground and the shadow area boundary on the roof of the building to determine the shadow area boundary on the wall body of the building. According to the method, the relationship between the building and the building shadow can be restored more accurately and more specifically.

The invention discloses a latitude regulating mechanism of an equatorial telescope. The equatorial telescope comprises a supporting seat and an hour angle assembly, wherein the hour angle assembly is mounted on the supporting seat and can rotate round the supporting seat. The latitude regulating mechanism comprises a worm wheel, a worm, a joint, a compression spring, a wrench and a limit screw, wherein the worm wheel penetrates through a slot in the side face of the supporting seat and is fixedly connected with the hour angle assembly, and the worm is horizontally arranged under the worm wheel and meshed with the worm wheel; the joint is fixed arranged at one end of the worm, and the compression spring is arranged on the joint in a sleeving manner; the limit screw penetrates through a through hole in the wrench and is fixedly connected with the tail end of the joint, and the wrench is limited at the tail end of the joint; a tooth-shaped structure hinged with the exterior outline of the joint is arranged in the through hole in the wrench and can slide along the joint. The latitude regulating mechanism can achieve a protection effect after precisely adjusting the latitude of the equatorial telescope, and prevents change of the latitude of the equatorial telescope caused by accidental touch, thus overcoming the defects of the prior art.