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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Patent•
13 Mar 1972
TL;DR: In this article, an improved, highly sensitive, electronic level and protractor instrument is provided which is intended to replace the prior art bubble type level, as well as the prior-art electric levels, and which is capable of indicating not only horizontal or vertical axes, but also axes which lie at any inclination thereto.
Abstract: An improved, highly sensitive, electronic level and protractor instrument is provided which is intended to replace the prior art bubble type level, as well as the prior art electric levels, and which is capable of indicating not only horizontal or vertical axes, but also axes which lie at any inclination thereto. The improved electronic level of the invention includes a pendulum which may be rotated to any desired angular position and which selectively engages a pair of contacts to activate an electronic circuit. Visual and/or aural electrical indicators are activated by the electronic circuits to indicate when the instrument is on a predetermined axis, and to indicate when the instrument is angularly displaced from the predetermined axis. Calibrated dials are provided from which the inclination of unknown axes may be determined, and which also may indicate the extent of the displacement of any particular axis from a particular inclination.
22 citations
Patent•
31 May 1943TL;DR: In this paper, a magnetic compass is adapted for use as a remotely indicating means for a magnetometer, which is used as an indicator for the magnetic compass in a control device.
Abstract: This invention relates to control apparatus and more particularly to devices in which motion of a continuously rotatable member is made effective at a distance to actuate an indicator. Since the invention is particularly adapted for use as a remotely indicating means for a magnetic compass,...
22 citations
Patent•
28 Jan 1999TL;DR: In this article, a combined torque and angular position detector includes two disks (10, 12) rotatable about a common axis, each disk has a number of regions of differing optical transmissivity and these control the transmission of optical radiation from a source to an array on which an image of the regions of the disks is formed.
Abstract: A combined torque and angular position detector includes two disks (10, 12) rotatable about a common axis. Relative angular displacement of the disks results from torque applied thereto. Each disk has a number of regions of differing optical transmissivity and these control the transmission of optical radiation from a source (20) to an array (22) on which an image of the regions of the disks is formed. A data processor (24) processes image intensity data and determines the angular positions of the disks and their relative displacement. Alternative arrangements are described in which positional information is derived by (i) providing one disk regions of intermediate transmissivity of width varying around one disk, (ii) by having the regions of lesser transmissivity of width varying around one disk or (iii) by arranging combinations of regions of several different widths around one disk.
22 citations
TL;DR: Results suggest that significant improvement in the accuracy of joint torque calculations can be achieved using this approach, and compared to traditional approaches, the optimization approach reduced the RMSE by 54% to 79%; previous methods only achieved an overall reduction of 30%.
22 citations
Patent•
17 Jun 1985
TL;DR: In this article, a patterned disc secured to the shaft or other rotor being observed is used for non-contact determination of shaft angle, which is insensitive to small deenters in the arrangement of the shaft, disc, detectors, and any associated optical system.
Abstract: 57 Apparatus and method for non-contact determination of shaft angle utilizes a patterned disc secured to the shaft or other rotor being observed. The disc has sectors of different optical properties whereby radiant energy directed to the disc will be encoded by the sectored pattern. A set of detectors, which each correspond to one of the sectors, provides variable output signals according to the amount of radiant energy attenuated by the disc and directed onto the detectors. These signals are converted to a set of digital signals which define a unique rotational positon, and a computing means calculates angular position from these signals. The computing means will, if necessary, compare the digital output signals and then calculate angular position in a manner which is insensitive to small deenters (or lack of concentricity) in the arrangement of the shaft, disc, detectors, and any associated optical system.
22 citations