60 results about "Geometric control" patented technology

The present invention relates to a design concept by which the power, loads and / or stability of a wind turbine may be controlled by typically fast variation of the geometry of the blades using active geometry control (e.g. smart materials or by embedded mechanical actuators), or using passive geometry control (e.g. changes arising from loading and / or deformation of the blade) or by a combination of the two methods. The invention relates in particular to a wind turbine blade, a wind turbine and a method of controlling a wind turbine.

A geometric construction system includes: a plurality of flat panels; and a plurality of connecting units provided on side edges of the flat panels. Each connecting unit includes first and second engaging parts. The first engaging part is formed with a protrusion, and the second engaging part is formed with a recess such that the protrusion of the first engaging part on one of the flat panels is releasably engageable with the recess of the second engaging part on another of the flat panels. The second engaging part is further formed with resilient claws that project from a periphery of the recess. The claws of the second engaging part on one of the flat panels clamp resiliently the protusion of the first engaging part on another of the flat panels when the protrusion is moved into the recess of the second engaging part.

Universal Player Controls for regulated pay computer-controlled video games afford players an efficient, intuitive method for customizing the layout and appearance of their favorite electronic games. A popup control featuring a jog wheel for fast selection and geometric control using the touch screen may be attached to each predetermined group of graphic assets allowing players to move, resize, dim, animate, temporary hide or overlap them. Predetermined presentation styles (skins) may be successively rendered. Whereas the displays on the regulated pay computer-controlled video games of the prior art were often visually cluttered and not visually appealing to adult game console players, the present Universal Player Controls enables the players to tailor the game appearance then save it in a player profile for latter retrieval.

The invention relates to an optical fiber loop for an optical fiber gyroscope. The loop comprises a sensing framework and a polarization maintaining fiber wound on the sensing framework and is characterized in that: the polarization maintaining fiber is a polarization maintaining fiber ribbon which is formed by bonding 2*n polarization maintaining fibers in parallel, wherein n is 1, 2, 3 and the like and the polarization maintaining fiber ribbon with 2*n cores is formed; the head and the tail of adjacent optical fibers at two head ends of the wound polarization maintaining fiber ribbon are connected with each other by melting; and the head end of a first optical fiber and the tail end of a last optical fiber are taken as an input end and an output end of the optical fiber loop. The loop has the advantages of greatly improving the winding quality and increasing the winding speed of the optical fiber loop, improving the performance index and winding efficiency of the optical fiber loop, improving the geometry control accuracy and temperature performance of a circling optical fiber, improving the temperature stability and accuracy index of the optical fiber loop, simplifying the winding process of the optical fiber loop, and high repeatability and improving winding efficiency, along with simple and reliable winding mode.

A system identifies double-layer dipoles in a magnetic image by defining two-dimensional patches of distributed point charges that simulate the double-layer dipoles. The geometric center of a two-dimensional patch is used as the location of an equivalent dipole moment of the double-layer dipole. The momentum of the equivalent dipole moment is determined by submitting the magnetic image to a dipole construction system that identifies the location and momentum based on the submitted magnetic image.

An actuating device for an active control suspension system which is provided at both ends of a sub-frame of a vehicle body and connected to one end of an assist link having the other end mounted at a knuckle and which changes a position of a mounting point of the assist link at the vehicle body, may include a member bracket fixedly mounted at each end of the sub-frame, provided with openings formed at both sides and an upper surface thereof, and formed of a pair of slide grooves having arc shape at the both ends thereof to slidably receive a pair of slide plates therein; an actuator connected to both slide plates through a pin-bolt unit; and a cam-bolt unit assembling a bush of the assist link with both slide plates and setting an initial position of the mounting point of the assist link at the vehicle body.

A caster active control system that is mounted on a suspension including a strut assembly for automatically adjusting a cater angle of a wheel of a vehicle, may include a fixed frame that is fixed to a vehicle body, a movable frame slidably mounted on a bottom of the fixed frame and configured to reciprocate in a front-rear direction of the wheel, a strut mount unit fixed to the movable frame and connected with an upper end of the strut assembly, and an operation module disposed between the fixed frame and the movable frame and engaged with the movabkle frame, wherein the operation module is driven by a motor to move the movable frame in the front-rear direction of the wheel.

Described embodiments are directed toward prosthetic valve leaflets of particular configurations that control bending character. In embodiments provided herein, a valve leaflet is provided with a planar zone that is bounded at a planar zone base by a straight line, wherein the leaflet is operable to bend along a base of the planar zone.

A gas distribution system for semiconductor processing that includes a contoured surface to achieve the desired gas distribution on the backside of a shower head. The system may include one or more openings towards the air source between the baffle and the temperature-controlled support member. The baffles can have non-uniform thickness and geometrically controlled openings to achieve the desired gas distribution. In one arrangement the baffle is tapered, with holes of uniform diameter extending at different distances across the baffle to achieve uniform gas pressure through the outlets in the flat bottom surface of the baffle. In another arrangement, the holes have a diameter that gradually increases away from the centrally located gas source outlet. The shape of the baffles and / or the configuration of the holes can be designed to achieve the desired air pressure distribution.

An digital image input, possibly being either pre-compressed or decompressed, is enhanced; its edges are preserved while any compression artifacts, like blocking and ringing, are simultaneously reduced. The enhancement method enhances images with luminance and chrominance functions, incompletely defined or undefined, on a set of pixels so that the missing information is extrapolated while the image is simultaneously enhanced. The method consists of up to three integrated sub-processes: the image sharpening flow; the de-quantization filtering; and the means of control of the local rate of flow. The image sharpening flow is an iterative nonlinear filtering schema intertwining a local median filter and a suitably chosen linear filter. A local geometric control mechanism allows selective application and adaptation of an algorithm allowing selective removal of local artifacts. De-quantization filtering ensures that the enhancement process does not alter information contained in the image beyond its quantization constraints.

A portable electrocardiograph, in which an exposed electrode is arranged on the end face of one end of a housing, characterized in that: the other end of the housing is of a comfortable structure for holding; the comfortable structure for holding is provided with the other exposed electrode; and the geometric center of the comfortable structure for holding is of an offset toward the other end of the housing and one of the two transverse sides, and a measuring key is arranged in the geometric center of the comfortable structure for holding. The present invention is of a humanized and unique holding structure shape, which ensures the wrist, the arm, and the trunk of the user are closed to form a relative space, thus allowing the user to measure in natural and correct posture so as to make sure the monitored data to be accurate and reliable.

In one exemplary embodiment, a computer-implemented method includes obtaining a data set from a data source. The data set is prepared for an analysis operation according to a problem type. A result is generated from an interactive geometric node based a geometric property of the data set. A specified condition is determined with the result from the interactive geometric node based on a query to the interactive geometric node. A system's geometric configuration is determined. A geometric control criterion is determined.

A mathematical model based centrifugal pump volute design method includes firstly, solving basic geometrical parameters of a volute according to a velocity coefficient method and calculating throat area of the volute by a velocity moment method; secondly, controlling and calculating different section areas of the volute according to an area control coefficient and a section area calculating equation and changing the control efficient to acquire volute hydraulic models of different section area distributions; thirdly, initializing geometric control variables of the volute, modeling for control points of different sections of the volute through mathematical models such as elliptical, circular, linear models, and expressing the different control points by a three-dimensional coordinate method; fourthly, utilizing a volute section area successive approximation and iteration algorithm to rapidly solve the coordinates of different section areas and section control points of the volute precisely; and fifthly, performing three-dimensional curve modeling to the volutes represented by different control points on the basis of three-dimensional design software.

A system for control of driveline geometry of a heavy vehicle includes a propeller shaft that is suspended in a center bearing unit, the position of which center bearing unit can be adjusted, wherein the adjustment is determined based on one or more measurements of one or more geometrical parameters of the vehicle and the chassis acceleration. A method for control of such a propeller shaft geometry and a heavy vehicle comprising such a system and / or by use of such a method are also disclosed.

A control lever for an active geometry control suspension includes a lever body formed with an outer coupling portion configured to be coupled to an actuator and an inner longitudinal through-bore, a tubular spacer inserted into the through-bore to penetrate therethrough, bearings interposed between the through-bore of the lever body and the spacer, sealing members installed at one side of each of the bearings between the through-bore of the lever body and the spacer, and washers installed outside each of the sealing members at ends of the through-bore.

The invention belongs to the field of structural dynamics, and relates to a bidirectional functionally gradient curved shell vibration analysis method. The invention utilizes NURBS function to describe unknown domain and geometric model, thus ensuring geometric accuracy and geometric structure response analysis, considering axial and circumferential functional gradient transformation material influence, and realizing different refinement according to actual requirements, thereby improving computational efficiency. In addition, for different curved shell structures, boundary conditions and material properties, only the corresponding geometric control points and spline functions, boundary constraints and material exponential parameters need to be set without reprogramming one by one, which greatly reduces the computational cost.

An active geometry control suspension may reduce production cost with simple scheme and provide design freedom. An active geometry control suspension of the present invention includes an assist link including a first link of which an end is rotatably connected to a vehicle body and a second link of which an end is connected to the first link and the other end is rotatably connected to a wheel, a clutch assembly selectively connecting a connecting portion of the first link and the second link to the vehicle body and a driving unit operating the clutch assembly.

An active geometric control suspension system may include an upper arm connected to a side above and between a rear wheel-sided knuckle and a subframe, and an assist link connected to the other side above and between the knuckle and the subframe, together with a node-changeable unit, wherein the node-changeable unit includes a housing formed at a portion of the subframe, a track-variable kit detachably coupled to brackets of the housing, cam-operating rails fixed to a side of the track-variable kit, a cam disposed on the cam-operating rails of the track-variable kit to be slidable up / down along the cam-operating rails, and a cam bolt connecting the cam with a vehicle body-sided connecting portion of the assist link.

A computer control system in a paving machine determines a location, long slope (pitch), cross-slope (roll), and elevation (with respect to reference surface) of the machine with reference to a plurality of sensors. The long slope, cross slope and elevation are compared to values from a design surface (horizontal alignment, vertical profile, and cross sections) using the location of the machine to query the design data. Deviations from measured orientation and elevation to the design (desired values) are determined for each elevation cylinder of the paving machine based on the sensor data using constrained geometric control algorithms that predict future deviations. Corrections are applied to bring the actual location, long slope, cross-slope and elevation to within acceptable tolerances of the desired values. Sensors are associated with specific legs, with some sensors associated with more than one leg, such that sensor values may be averaged to reduce error.

An active geometry control suspension may reduce production cost with simple scheme and provide design freedom. An active geometry control suspension of the present invention includes an assist link including a first link of which an end is rotatably connected to a vehicle body and a second link of which an end is connected to the first link and the other end is rotatably connected to a wheel, a clutch assembly selectively connecting a connecting portion of the first link and the second link to the vehicle body and a driving unit operating the clutch assembly.

The invention relates to an antenna test method using an unmanned aerial vehicle and differential GNSS positioning. A signal source and a transmitting antenna are carried on a small multi-rotor unmanned aerial vehicle as a transmitting source; and the transmitting antenna pattern is considered to be affected by the unmanned aerial vehicle body. The unmanned aerial vehicle flies according to a preset trajectory; the antenna to be tested receives the transmitting signal during the flight; the power of the signal received by the antenna to be tested is collected at a certain time interval througha spectrum analyzer; and the gain pattern of the antenna to be tested is obtained by using the power of the received signal. In order to make the unmanned aerial vehicle fly accurately according to the preset trajectory, the real-time differential GPS positioning is used as navigation information, and the flight trajectory of the unmanned aerial vehicle is accurately controlled through a geometric control method.

The invention discloses a high-sensitivity piezoresistive single-axis force sensor design method based on topological optimization. According to the method, the minimum structure external force work is taken as an optimization target; three constraint conditions of a binding force balance equation, a volume constraint and a sensitivity constraint are provided; the sensor configuration is determined by a series of design variables; optimization problem, the invention relates to a topological optimization method based on a mobile component (hole). Size optimization and topological optimization design of the sensor are unified by utilizing a topological description function, only proper relevance needs to be added to some design variables (geometric control parameters), then geometric information in a design domain is mapped to a finite element model to obtain an optimized column finite element discrete format, and the optimized column finite element discrete format is solved by adoptingan optimization solver. According to the method, the research and development cost of the sensor is expected to be reduced, the design efficiency of the sensor is improved, and the designed sensor configuration is machinable.