46results about "Control without using feedback" patented technology

An assembly includes one or more photovoltaic solar trackers; a rechargeable power supply system, including power supply elements to power the tracker or trackers; a charging system, to recharge the power elements; and a tracker controller. The assembly stands out for including one or more supercapacitors as power supply elements. The invention makes it possible to arrange the power supply elements at low temperatures without the need for heaters, increase their useful life and reduce their size.

The present disclosure describes a device for controlling a rotary cylinder, which, by means of six skewed wheels, can align the horizontality or precisely control a target angle and simultaneously adjust the height and position of a rotary axis. In one embodiment, the device for controlling a rotary cylinder comprises a first rotary unit with a first and a second wheel, the inclined surfaces of which are arranged at an angle of deflection relative to the respective base surface such that they touch; a second rotary unit connected to the first rotary unit, comprising a third and a fourth wheel, the inclined surfaces of which are arranged at an angle of deflection relative to the respective base surface such that they touch; and a third rotary unit comprising a fifth and a sixth wheel, the inclined surfaces of which are arranged at an angle of deflection relative to the respective base surface such that they touch.a drive unit that independently drives the first to sixth wheels, a memory for storing instructions, and a processor that, by executing the instructions, rotates at least one wheel of the first to sixth wheels to control the drive unit so that the tilt angle of the rotary cylinder is set to a preset target value.

A photovoltaic tracking system on roof, includes a photovoltaic panel group having photovoltaic panels connected together by their sides in a linear direction using connecting frames, a tilting system, a gear rack, and a stepper motor. The tilting system includes a rod, a wheel, and a rail. The rod has a first end connected to the wheel and a second end connected to the photovoltaic group. The wheel is disposed on the rail and configured to move linearly along the rail. The tiling system is configured to tilt the photovoltaic panel group by a push or pull force from the rod when the wheel travels on the rail. A triangle is formed by the titling system, the photovoltaic panel group, and a portion of the roof, when the tilting system tilts the photovoltaic panel group. The stepper motor moves the gear rack, so it moves the wheel.

The invention relates to the technical field of household electrical appliances, and discloses a box assembly, a control method thereof and a household electrical appliance. Wherein the box body assembly comprises a main body, a face position acquisition device, an interface projection device and a control device. The main body comprises a cover plate and a mounting plate arranged on one side of the cover plate. The face position collecting device is arranged on the mounting plate and used for collecting the face position of the human body. The interface projection device comprises a driving assembly and a projection piece arranged at the driving end of the driving assembly, and the projection piece is used for projecting the operation interface to the cover plate to be displayed. The control device is electrically connected with the face position collecting device and the driving assembly, and the control device is used for controlling the driving assembly to operate according to the face position collected by the face position collecting device so as to drive the projection part to move relative to the cover plate, and then the display position of the operation interface on the cover plate is adjusted. The operation interface of the household appliance can be adjusted according to the height visual angle of the user, and the use experience of the user is improved.

A control input apparatus for operating an aerial lift system includes a control lever assembly that has at least one control lever and at least one position sensor. The at least one position sensor may indicate a position and / or a movement of the at least one control lever. The control input apparatus additionally incudes a control input element actuatable over a movement range from a non-actuated position to a fully-actuated position, and at least one interlock sensor that releases an interlock corresponding to the control lever assembly upon the control input element being actuated at least to an actuation threshold position located between the non-actuated position and the fully-actuated position. Upon the control input element being actuated at least to the actuation threshold position, the control input apparatus provides control inputs corresponding to the position and / or the movement of the control lever indicated by the at least one position sensor.

The invention discloses an ore pass opening ore cleaning method, system and equipment and a storage medium. The method comprises the steps that mechanical arm starting point coordinates, mechanical arm target point coordinates, the mechanical arm base height, the tail end pendulum bob height, the connecting line length of the top end of a mechanical arm base and a tail end pendulum bob, the large arm length and the small arm length are obtained; according to the mechanical arm starting point coordinates and the mechanical arm target point coordinates, the mechanical arm vertical projection distance and the mechanical arm rotation angle are calculated; calculating the angle of the large arm according to the height of the mechanical arm base, the height of the tail end pendulum bob, the vertical projection distance of the mechanical arm, the length of the large arm and the length of the small arm; the forearm angle is calculated according to the mechanical arm base height, the tail end pendulum bob height, the mechanical arm vertical projection distance, the large arm length and the forearm length; according to the rotation angle of the mechanical arm, the angle of the large arm and the angle of the small arm, the mechanical arm is controlled to clean ore at the draw shaft opening through the preset constant flow, and the efficiency and safety of ore cleaning at the draw shaft opening are improved.

The application discloses a heliostat direction correction method and system for photo-thermal power generation, and relates to the technical field of data processing. The method comprises the following steps: acquiring a heliostat array of a target area, and acquiring layout information of the heliostat array; obtaining a plurality of target area grids; respectively calling a plurality of historical correction data of the plurality of target area grids, performing volume division on the plurality of target area grids, and obtaining a first area grid set and a second area grid set; respectively performing image acquisition on the heliostat array of the first area grid set and the second area grid set through an image acquisition device, and obtaining a first image set and a second image set; inputting into a direction correction model, and outputting a first correction parameter set and a second correction parameter set; and performing direction correction on the heliostat array. The application solves the technical problem that the existing heliostat direction correction has low intelligent degree and poor accuracy, and achieves the technical effect of improving correction accuracy.

The present application relates to the technical field of confocal adjustment, and particularly relates to a large-aperture segmented telescope discretization confocal testing and adjustment method, which comprises the following steps: S1: placing a microlens array on the focal plane of the segmented telescope to rearrange the spatial frequency of the focal point of the segmented telescope; S2: performing differential operation on the light intensity of each light spot and the light intensity of the central sub-aperture to obtain the distance from each light spot to the central sub-aperture; S3: performing testing in each direction by using an eight-neighborhood algorithm according to the distance from each light spot to the central sub-aperture to determine the adjustment step and direction of the segmented telescope; and S4: adjusting the spliced sub-mirror of the segmented telescope according to the adjustment step and direction to maximize the energy of the central sub-aperture. The microlens array is used to rearrange the spatial frequency of the focal point, and higher-precision confocal testing and adjustment are finally achieved.

A solar panel mounting system includes a rotatable vertical support member, a lower solar panel support member for supporting at least one solar panel in a rest position, and an upper solar panel support member rotatably attached to the at least one solar panel. One or more connection members attach the at least one solar panel to the upper solar panel support member, allowing the at least one solar panel to rotate relative to the upper solar panel support member. Wind force upon a surface of the at least one solar panel causes the at least one solar panel to rotate around the upper solar panel support member out of the rest position. The system may include a motor connected to the rotatable vertical support member for driving rotation, a computing unit for controlling the motor, and a ground anchoring system for the rotatable vertical support member.

The present application relates to the field of confocal modulation of a mosaic telescope, and specifically provides a large-aperture mosaic telescope partition multi-stage confocal method, comprising: performing finite element analysis on a mosaic mirror to obtain a deformation coupling relationship of mosaic sub-mirrors, dividing the mosaic sub-mirrors of the mosaic mirror into multiple structural functional areas, independently confocally adjusting the mosaic sub-mirrors in each structural functional area by using a digital micromirror device, detecting wavefront information of each structural functional area after independent confocal adjustment by using a wavefront sensor, and adjusting all the mosaic sub-mirrors in the structural functional area as a whole according to the wavefront information of each structural functional area, so that the area focal points of all the structural functional areas are collectively converged at a final system focal point of the mosaic mirror. The present application realizes initial misadjustment detection and high-precision confocal correction in a large dynamic range, and reduces confocal adjustment cost and complexity.

The utility model belongs to the technical field of electric lifting table controllers, and particularly relates to a linear driving controller with a fingerprint lock, which comprises a shell internally provided with a main control module; the at least two basic keys are embedded in the shell and are electrically connected with the main control module respectively; the fingerprint identification module is embedded in the shell and is electrically connected with the main control module; wherein the fingerprint identification module is suitable for verifying the fingerprint of a user and sending a verification success signal to the main control module after the verification is passed; the main control module is suitable for activating the basic key for use after obtaining the verification success signal, so that the lifting table can be controlled to ascend and descend when the basic key is pressed. According to the linear driving controller with the fingerprint lock, the user identity is recognized through the fingerprint recognition module, the situation that the height of the lifting table is changed by mistakenly touching of other people or children is effectively prevented, and the safety of the lifting table is improved. The stability of the height of the lifting table in the working process of a user is guaranteed, and the use experience of the user is improved.

Devices and methods presented in this disclosure may be advantageously employed to optimize power generation and / or increase longevity of modules. In aspects of the invention, switching from backtracking mode to twin half cut module mode depending on angle of incidence and / or diffuse fraction calculations / measurements may increase power generation compared to if only one mode were used. In aspects of the invention, preventing the tracker from generating excess power may reduce temperatures of the tracker and increase longevity of its solar panels.

A method may include obtaining information from a weather forecasting service that relates to indicators of an incoming hail event. The method may include determining a stowing score that quantifies whether the hail event is likely to occur within a period of time based on the information from the weather forecasting service. Responsive to the stowing score exceeding a threshold value, a time at which the incoming hail event is likely to occur may be predicted based on the weather forecasting service information. The threshold value may indicate a threshold likelihood of the hail event occurring or a threshold period of time before occurrence. The method may include determining a wind direction at the predicted time at which the hail event is likely to occur and stowing photovoltaic modules based on the wind direction.

The invention relates to the technical field of confocal modulation of spliced telescopes, and particularly provides a large-aperture spliced telescope partition multistage confocal method, which comprises the following steps: carrying out finite element analysis on a spliced mirror surface to obtain a deformation coupling relationship of spliced sub-mirrors, and dividing the spliced sub-mirrors of the spliced mirror surface into a plurality of structural functional areas, a digital micro-mirror device is used for carrying out independent confocal adjustment on spliced sub-mirrors in each structural functional area, then a wavefront sensor is used for detecting wavefront information of each structural functional area subjected to independent confocal adjustment, and all spliced sub-mirrors in the structural functional area are integrally adjusted according to the wavefront information of each structural functional area. And converging the regional focuses of all the structural functional regions together to a final system focus of the spliced mirror surface. According to the invention, large-dynamic-range initial imbalance detection and high-precision confocal correction are realized, and confocal adjustment cost and complexity are reduced.

This invention discloses a portable projector, comprising: an inner shell connected to outer shells on the upper and lower sides; the inner shell having an air inlet, an air outlet, and a sound outlet from top to bottom; a speaker installed inside the lower outer shell; a main control board above the speaker; a heat sink above the main control board; the heat sink having heat dissipation fins and a fan; the heat dissipation fins corresponding to the air outlet; an optical engine above the heat sink; a driver board above the optical engine; an angle adjustment component above the driver board; the position of the air inlet corresponding to the lower side of the driver board or the angle adjustment component; and a gesture detection board above the angle adjustment component. This design achieves a highly efficient heat dissipation structure while making the device compact and small in size.

The application provides a photovoltaic panel chain drive control system and a control method. The control system comprises a first track and a second track, the first track and the second track are arranged side by side, an activity space is arranged between the first track and the second track, the activity space comprises an unfolding part and a storage part; a plurality of power beams, the power beams are used for bearing photovoltaic panels, the power beams are connected in series, adjacent power beams are connected through fixed-distance ropes; an ejection rope and an ejection power mechanism, the ejection power mechanism is connected with the ejection rope and is used for driving the first end of the ejection rope to move forward; the power beams are arranged in the activity space, the first end of the power beam is connected to the first track, and the tail end of the power beam is connected to the second track; the plurality of power beams comprise a first power beam at the first position and a last power beam at the last position, and the first end of the ejection rope is connected with the first power beam. Through the application, the technical problem that the photovoltaic panel is difficult to realize the layering in and out is solved.

A solar energy device for an automatically controlled sun tracking system comprises: a revolution component; a revolution control component provided with first and second touch switches and a revolution timer, the first and second switches are connected to first and second revolution actuators for switching a revolution forward and reverse switch electrically connected to the timer and a revolution drive motor and energizing the motor at a set time; an axial rotational component; and an axial rotation control component provided with first and second axial rotational actuation timers and an axial rotation timer, the first and second timers are connected to first and second axial rotational actuators for switching an axial rotational forward and reverse switch electrically connected to the axial rotation timer and an axial rotational drive motor and energizing the motor at a set time.

The invention relates to the technical field of precision adjusting equipment, and particularly discloses a high-precision three-dimensional adjusting system based on a flexible adjusting assembly and a debugging method. The system comprises three groups of flexible adjusting assemblies, a bottom plate and three groups of wedge-shaped displacement tables, each flexible adjusting assembly comprises two sets of flexible rotating assemblies arranged at 90 degrees, a set of flexible displacement compensation assembly and a rigid supporting column, and the three sets of flexible adjusting assemblies are distributed at the corners of the bottom plate at 60 degrees. The traditional ball-V groove matching is replaced by the elastic deformation of the material, and the z-axis displacement input of the wedge-shaped displacement table is coupled, so that the high-precision adjustment of the translation of the bottom plate along the z-axis and the rotation of the bottom plate around the x-axis and the y-axis is realized. The device is free of friction clearance, high in rigidity, large in load, adaptive to the vacuum clean environment, high in adjusting precision and good in repeatability, and the defects in the prior art are effectively overcome.

This invention discloses a method and system for controlling the louvers of an insect-infesting lamp. The method includes: acquiring the flight altitude range of mosquitoes at the lamp's installation location, and determining the rotation angle of the louvers based on the flight altitude range; acquiring real-time wind speed and direction data at the lamp's installation location, and controlling the opening or closing of the louvers in the corresponding direction based on the wind speed and direction. This invention achieves integrated monitoring of both low-altitude and high-altitude mosquitoes by controlling the rotation angle of the louvers. Simultaneously, by monitoring wind speed and direction and coordinating with the opening or closing of the louvers, it solves the problem of fallen leaves blocking the insect's passageway.

This utility model belongs to the technical field of moxibustion devices, and in particular, it is a remote-controlled lifting moxibustion device. It includes a base, the top of which is connected to a moxibustion mechanism via an adjustable support mechanism. The moxibustion mechanism includes a lower cover connected to a connecting seat, an upper cover inserted into the top of the lower cover, an NTC temperature sensor installed inside the lower cover, a protective chamber on the top of the upper cover, and a moxa stick lifting adjustment mechanism on both the top and inside of the upper cover. A moxa stick combustion indicator mechanism is connected to the side of the moxa stick lifting adjustment mechanism. A central control device is fixed to the outside of the adjustable support mechanism. The central control device is connected to a remote controller via a control line. When a patient uses this device for moxibustion, they can remotely control the central control device via the remote controller to operate the servo motor and adjust the height of the moxa stick, i.e., the distance between the moxa stick and the body, enabling the patient to independently control the moxibustion temperature while preventing burns.

The application provides a kind of according to the angle adjustment of identification frame delivery method, and the delivery method comprises the following steps: S1 identifies the four corners of material frame by visual mechanism;S2 confirms whether the second identification frame is only 1, and determines the largest frame edge in the second identification frame as the second identification frame;S3 determines the first identification frame located at the top by the distance between the second identification frame and the top first identification frame;S4 then determines the position of the other two first identification frames according to the distance between the two first identification frames, and finally obtains the position information of the first identification frame and the second identification frame;S5 calculates the slope according to the three first identification frames and one second identification frame, and obtains the angle value of the first rotation axis and the second rotation axis;S6 controls the pipe to be turned over by the first motor according to the angle value of the first rotation axis, controls the suction cup assembly to be rotated by the second motor according to the angle value of the second rotation axis, and controls the suction cup assembly to be relaxed after alignment to realize delivery.

A control system for controlling a solar array row includes a processor and a memory in communication with the processor, wherein the control system is programmed to receive real-time fire detection data, identify a fire hazard to the solar array row based on the real-time fire detection data, and execute a fire stow protocol in response to identifying the fire hazard. The control system is further programmed to identify a fire stow position for the solar array row and automatically control the solar array row, according to the fire stow protocol, to rotate to the fire stow position.

A system and method for safe operation of a tracking solar array field during extreme and non-extreme operating conditions. A plurality of strings of tracking solar panels are electrically connected to a combiner box that produces a combined variable operating DC voltage at an input of an inverter. A total number of the solar panels in a string exceeds a rated maximum number of solar panels to maintain variable operating DC voltage below a rated maximum DC voltage during extreme operating conditions that cause the variable DC voltage to exceed the rated maximum DC voltage. If extreme operating conditions are imminent, the method reduces the variable DC voltage to below the rated maximum DC voltage by switching in a shunt load at the input of the inverter, or switching in a shunt load at the output of the combiner box; or tilting operating tracking solar panels to a solar stow tilt position.

The invention discloses a precise toothed arc swing mechanism and an adjustment method thereof, and the mechanism comprises a drive chassis which provides support and drive for the swing of a toothed arc; the floating roller mechanism is arranged on the driving chassis; the middle part of the toothed arc is arranged on the driving chassis, and a toothed arc side wing of the toothed arc is arranged in the floating roller mechanism, so that the toothed arc swings around the central axis of the toothed arc; the floating roller mechanism comprises a floating roller mechanism body which is of a symmetrical structure; a plurality of bearing assembly mounting holes are formed in the floating roller mechanism body; and the plurality of groups of roller bearing assemblies are mounted in the corresponding bearing assembly mounting holes and are used for contacting and supporting the toothed arc side wings. According to the invention, the problems of no positioning reference, insufficient rigidity of a main body structure and a toothed arc, shielding of a driving chassis and poor assembly quality caused by assembly coupling among components in the assembly and adjustment of the precise toothed arc swing mechanism can be solved.

A photovoltaic array tracking bracket and a control method thereof are provided. The solar illumination point on the photovoltaic array is determined based on the solar illumination area; the power generation influence information and solar illumination information of the solar illumination points are collected, and the tracking credible value of the solar illumination point is calculated based on the analysis results; the compensation coefficient of the solar illumination point is set based on historical power generation information, and the tracking credible value is compensated according to the compensation coefficient to obtain the target tracking credible value; all the target tracking credible values are sorted in numerical size, and the target solar illumination point corresponding to the maximum target tracking credible value is extracted; a comparison point is selected on the photovoltaic array, and the photovoltaic array is controlled based on the target solar illumination point and the comparison point.

A photovoltaic tracking system on roof, includes a photovoltaic panel group having photovoltaic panels connected together by their sides in a linear direction using connecting frames, a tilting system, a gear rack, and a stepper motor. The tilting system includes a rod, a wheel, and a rail. The rod has a first end connected to the wheel and a second end connected to the photovoltaic group. The wheel is disposed on the rail and configured to move linearly along the rail. The tiling system is configured to tilt the photovoltaic panel group by a push or pull force from the rod when the wheel travels on the rail. A triangle is formed by the titling system, the photovoltaic panel group, and a portion of the roof, when the tilting system tilts the photovoltaic panel group. The stepper motor moves the gear rack, so it moves the wheel.

A laser tracking method, capable of reducing the time for a laser line to move to the center of a receiver, thus effectively improving the working efficiency of users. The method comprises: a laser emitting device emits a laser line towards a receiver, and a first distance d1 from a first receiving point for the laser line on a receiving window of the receiver to the center of the receiver is read, the length of the receiving window in the direction of the receiver being d; a driving device drives the laser emitting device to move towards the center of the receiver by a first movement angle Δα', and a second distance d2 from a second receiving point for the laser line on the receiving window to the center of the receiver is read; according to formula (1), acquiring a distance L between the laser emitting device and the center of the receiver, where L / d>100: L=(d1-d2)÷tan(Δα') (formula (1)); according to formula (2), acquiring a second movement angle Δα by which the laser emitting device is to move: Δα=tan-1(d2÷L) (formula (2)); and, according to formula (3), determining the number m of pulses for the driving device to move: m=Δα÷Δθ (formula (3)), wherein Δθ is a unit movement angle of the laser emitting device corresponding to each pulse of movement of the driving device; and the driving device moves by m pulses, and, after moving by the second movement angle, the laser emitting device emits a laser line, the laser line being aligned with the center of the receiver.

An elevated dual-axis photovoltaic solar tracking assembly tracks the position of the sun with a high efficiency photovoltaic array, orienting photovoltaic array orthogonal to the sun, for optimal efficiency in generating electricity every minute of every day year-round. The assembly provides a pole, typically 20 feet, to elevate the photovoltaic array, thereby allowing a minimum 13 feet clearance from the ground at all times to retain use of the real estate space below the photovoltaic array. A structural frame carries photovoltaic array. A drive-core unit has two interdependent slew drives, driven by all-electric motors, to adjust positioning of photovoltaic array in the orthogonal orientation relative to sun while maintaining the photovoltaic array longitudinal axis orientation to the support pole. This drive-core unit includes the control system with GPS, anemometer, snow sensor and encoder transducers that provide data for a positional algorithm to calculate the sun's position, and move the photovoltaic array to optimally track it, at preset time intervals; as well as to move the array to other desired positions for wind and snow safety or owner preference. The control system energizes the slew drives via electric motors for movement and optimal sun tracking.