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.

Synchronization control method and synchronization control device

Abstract: A reference variable having a linear relationship with the angular position of a master axis is set, and a correspondence between this reference variable and the displacement of a slave axis is stored in a data table One execution stage is specified by setting a starting reference variable and an ending reference variable from this data table A desired sequence is assigned to a plurality of execution stages thus specified The reference variable corresponding to the angular position of the master axis is determined, slave axis displacement data corresponding to the reference variable is read out, and the slave axis is positioned in accordance with the position of the master axis on the basis of this displacement data

Crank connector for adjustment of drilling path - comprises interconnected tubes having variable relative angular positioning

Abstract: A crank connector for directional drilling comprises a pair of tubular members connected to each other. the axis of rotation of one of the tubular members and the axis of the members are separate and converge at the same point. A piston is constrained to rotate with a shaft connecting the members and forms part of an arrangement to remotely control the relative angular positions of the member. The members can be locked against relative rotation after adjustment of their angular position.

Torque orientation device

Abstract: A torque orientation device (10) selectively orients a space craft without the use of jets or the ejection of any material. Pedestals (12, 14) support a gimbal (16) which is selectively driven by a motor (20). The gimbal (16) includes a frame (24) which supports an axle (30), a motor (26) and a commutator (28). Mass members (36, 38) are driven about the axle (30) by the motor (26). The moment of inertia about the primary axle (18) of the gimbal (16) is a function of the angular position of the mass members (36, 38) about the axle (30). The motor (20) applies selective torque impulses at periods (T1, T2) to the primary axle (18) in synchronism with the angular position of the mass members (36, 38) about the axle (30). The resulting counter torque from the motor (20) is passed to the space craft to cause the space craft to rotate toward the desired angular position. If the device (10) is mounted in the cross axis of a larger gimbal, its main axis may be adjusted to any other angle to produce space craft rotation about any axis. A group of three of the torque orientation devices (10) mounted at orthogonal angles to each other provides three axis orientation control for the space craft.

Gyroscopic stabilizer having an adjustable spring

Abstract: A restoring torque is applied to the gimbal of a gyroscopic stabilizer by a spring having an adjustable restoring characteristic. In one embodiment, the restoring characteristic of the spring is nonlinear, increasing with the angular displacement of the gimbal from a reference position. The springrestoring characteristic can be automatically adjusted responsive to changes in the frequency of the applied torque. To compensate for the adverse effects of rotational displacement of the supporting structure about the gimbal axis on the stabilization action, two identical stabilizers are employed that have rotors spinning in opposite directions and gimbals supported to rotate about parallel axes.

Machine control system

Abstract: An electronic circuit particularly suited for use in a precision lead screw generator to monitor and control linear displacement of the carriage and cutting head and angular displacement or rotation of the workpiece at a preselected, fixed ratio. Rotation of the workpiece is controlled by a phase-locked electronic servo loop which divides one revolution of the piece into a preselected number of discrete increments. Similarly, linear displacement of the cutting head is controlled by an electronic servo loop, including a laser interferometer, which divides a selected unit of displacement into discrete increments. A master oscillator and appropriate frequency dividers incrementally step the respective servo loops at a frequency ratio corresponding to the desired pitch or lead of the final product.