Topic
Angular displacement
About: Angular displacement is a research topic. Over the lifetime, 5102 publications have been published within this topic receiving 46081 citations. The topic is also known as: rotational displacement.
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TL;DR: In this paper, a finite element model was proposed to account for flexion, torsion and traction compression leading to six degrees of freedom on each node, and the angular displacement was defined in such a way that it combines simultaneously the intrinsic nominal rotation and the torsional deformation.
17 citations
Patent•
04 Jun 1996
TL;DR: In this article, a motion sensor is attached to the seat belt so that it assumes a first angular position when the seatbelt is in an inoperative position and a second angular position in an operative position, and generates a signal indicative of motion of the vehicle occurring while the sensor is in the first position.
Abstract: A device for prompting the use of a vehicle seatbelt. The device includes a sensor and an alarm. The sensor is attached to the seatbelt so that it assumes a first angular position when the seatbelt is in an inoperative position and a second angular position when the seatbelt is in an operative position. The sensor includes a motion sensor responsive to motion of the vehicle when the sensor is in the first angular position. The sensor generates a signal indicative of motion of the vehicle occurring while the sensor is in the first position. The alarm is responsive to the signal and generate an alarm to prompt use of the seatbelt.
17 citations
Patent•
22 Jun 2001
TL;DR: In this paper, the authors proposed a radar means 25 is mounted on a vehicle 13 for angular displacement drive so that a beam from the radar mean 25 scans by a drive means 5 to receive a reflection beam, while the vehicle 13 runs on a left running lane 16 of a straight road, a linear guard rail 18 provided on a road side on the left side is detected for a plurality of times in which scanning angles differ on the right side of the axial line 7 determined in advance.
Abstract: PROBLEM TO BE SOLVED: To accurately detect an axis deviation angle θ of an axial line 7 determined in advance and an axial line 21 of straight running of a vehicle by scanning and deflecting a beam radiated to detect a distance between objects 18 and 19 to be detected on both right and left sides of the axial line 7 determined in advance in a substantially horizontal plane around a vertical axial line 6. SOLUTION: A radar means 25 is mounted on a vehicle 13 for angular displacement drive so that a beam from the radar means 25 scans by a drive means 5 to receive a reflection beam. While the vehicle 13 runs on a left running lane 16 of a straight road, a linear guard rail 18 provided on a road side on the left side is detected for a plurality of times in which scanning angles differ on the left side of the axial line 7 determined in advance, virtual straight lines yLa, yRa connecting a plurality of each detection position are obtained by computing, and the axis deviation angle θ corresponding to the inclination k is obtained by computing.
17 citations
Patent•
12 Jan 1999TL;DR: A method and apparatus for practicing the method of making toric contact lenses having a toric axis and ballast axis located on the anterior and posterior surfaces of a lens is described in this article.
Abstract: A method and apparatus for practicing the method of making toric contact lenses having a toric axis and ballast axis located on the anterior and posterior surfaces of a lens. Detectable features are formed on the anterior (12) and posterior mold (14) sections corresponding to the location of the toric axis and ballast axis, respectively. An axis alignment tool having detecting means thereon is used to set the mold sections to a known angular position. The desired axial offset is input into a computer which establishes the axial offset between the mold sections.
17 citations
TL;DR: In this paper, a three-dimensional noncontacting angular motion sensor based on magnetometry was developed for velocity feedback in the ball wheel mechanism, which serves as the drivetrain for a class of omnidirectional mobile platforms.
Abstract: A three-dimensional noncontacting angular motion sensor, based on magnetometry, has been developed for velocity feedback in the ball wheel mechanism, which serves as the drivetrain for a class of omnidirectional mobile platforms. More generally, this scheme tracks rigid-body rotation about a fixed point with an undefined axis of rotation. The approach involves tracking the time-varying magnetic field of a permanent disc magnet embedded at the center of the sphere. This data is then used to determine the absolute orientation of the magnet axis. Finally, an approach based on the natural invariants of rigid-body motion is used to determine the instantaneous axis of rotation and the angular speed of the sphere about this axis. In this paper, the sensing scheme is formulated, effects of geometric offsets within the tri-axial fluxgate magnetometer are addressed, and results from experimental verification are presented.
17 citations