58 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.

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.

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.

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.

An active geometry control suspension, may include an assist link of which a wheel is connected to one end portion thereof to guide a movement of the wheel, a moving member, one portion of which is pivotally fixed to the other end portion of the assist link, a guide formed in the moving member and including a slot to slidably receive the moving member therein so as to guide a movement of the moving member, a body that is fixed to a vehicle body to connect the guide thereto, and a driving portion coupled to the other portion of the moving member and moving the moving member along the slot to vary a position of the assist link and thus to vary an alignment angle of the wheel.

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.

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.

The invention discloses a four-rotor flying robot maneuvering formation control method for wireless speed measurement, and the method comprises the steps: building a kinetic model of each four-rotor flying robot by employing a Newton-Euler equation for a multi-four-rotor flying robot system capable of maneuvering in a three-dimensional space; based on an auxiliary filtering signal generator, introducing second-order signals of a plurality of auxiliary variables to eliminate the requirement for linear speed measurement in formation control of the multi-four-rotor flying robot; and finally, based on a geometric control method, designing a nonlinear control law comprising an inner and outer ring cascade structure on the Euclidean group SE (3), the inner ring controlling attitude dynamics andthe outer ring coordinating translation dynamics of each four-rotor flying robot to realize a high maneuvering formation control target. Compared with the prior art, the control law (net thrust and body torque) involved in the method does not depend on the linear velocity vector, that is, the four-rotor flying robot maneuvering formation control method provided by the invention realizes wireless velocity, and does not need linear velocity measurement.