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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.


Papers
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Patent
04 May 1991
TL;DR: In this article, a double integrator is used in a flywheel for satellite stabilization where it facilitates adjustment of the angular position while at the same time providing insulation against vibration, and the position of the body is caused to follow slow movements of the stator.
Abstract: A device for insulating a body on magnetic bearings from vibration of its stator and hence the environment and vice versa. The body may include a rotor which can produce undesirable vibrations during rotation. The position of the body is caused to follow slow movements of the stator, but does not follow higher frequency interference. However, intentional fast position regulating procedures are possible. The device includes a double integrator which generates a largely interference-free position sensor signal for low vibration bearing adjustment which is followed slowly by a true position sensor signal. The device can be used in a flywheel for satellite stabilization where it facilitates adjustment of the angular position while at the same time providing insulation against vibration.

13 citations

Patent
28 Sep 2011
TL;DR: In this paper, a robotic ball device with a center point and an axis of rotation passing through the center point around which the ball device rotates during motion in a forward linear direction includes a housing and a defined pathway located on an inner face of the housing.
Abstract: A robotic ball device having a center point and an axis of rotation passing through the center point around which the robotic ball device rotates during motion in a forward linear direction includes a housing and a defined pathway located on an inner face of the housing that forms a closed loop around the axis of rotation. A rolling member is contained in the housing and movably disposed on the defined pathway. An actuator is coupled to the rolling member for actuating rotation of the rolling member. A weighted component is operationally coupled to the rolling member, and the weighted component is sufficiently heavy to maintain the rolling member, during a motion in the forward linear direction, at a substantially constant angular position in a forward vertical plane, which dissects the rolling member, relative to an origin in a moving frame of reference that moves with the robotic ball device.

12 citations

Patent
29 Nov 2013
TL;DR: In this paper, a haptic system meant to simulate the kinematic and dynamic operating conditions in the field of articulated mechanisms is presented. But the system is limited to a single user.
Abstract: The invention relates to a haptic system meant to simulate the kinematic and dynamic operating conditions in the field of articulated mechanisms. According to the invention, the system comprises a crank (1) rotated by a user, a rotation sensor (2) placed on a shaft of a gearmotor (3) which detects the change of angular position of the crank (1) in time and transmits the data to a computing unit (4) which takes over the value of angular variation, calculates the speed and, depending on the simulated mechanism and the size of the crank (1), controls an electric motor as to generate a force return at the calculated value, at the same time the computing unit (4) displaying the image of the operating simulated mechanism on a display system (5), in accordance with the motion imparted to the crank (1) by the user.

12 citations

Patent
03 May 2002
TL;DR: In this paper, a motion platform for supporting a g-force sensitive load, the motion platform includes base, a top having a gforce-sensitive load bearing portion and a support portion, the top is displaced from the support portion of the top at which the support member supports the top.
Abstract: A motion platform for supporting a g-force sensitive load, the motion platform includes base, a top having a g-force sensitive load bearing portion and a support portion. A support member supports the top relative to the base with freedom of movement about at least one horizontal axis and a pair of positioning motor assemblies mounted to the base. A respective arm assembly extends between each of the positioning motor assemblies and the top, and a microcontroller is electrically connected to the positioning motor assemblies for controlling a rotational speed and a rotational direction of said positioning motor assemblies and thus angular displacement of said top of the motion platform. The g-force sensitive load bearing portion of the top is displaced from the support portion of the top at which the support member supports the top. The arm assembly is responsive to rotary motion of a respective one of said positioning motor assemblies and adapted to rotate 360 degrees about the respective positioning motor assembly to effect relative movement of the top about the at least one axis.

12 citations

Patent
15 Nov 2005
TL;DR: In this paper, the angular position of a fastening cleat is adjusted such that the average variation in the value of the free angular movement is returned to the median of the angular movement range.
Abstract: A method and device for measuring and adjusting the angular movement of a fastening cleat on a clipless pedal, includes a motion detector which is fixed to the pedal to detect any angular movement in relation to the fastening cleat and transmit data to a data-processing device which calculates values of the angular movement as a function of time, and the average of the variations in the angular movement. The contactless motion detector includes a magnetic sensor which is fixed to the pedal, and is disposed facing a magnet that is fixed beneath the cleat and can detect any variation in the orientation of the magnetic field as a function of the angular movement of the cleat. The angular position of the fastening cleat is adjusted such that the average variation in the value of the free angular movement is returned to the median of the free angular movement range.

12 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202339
202282
2021106
2020164
2019224
2018212