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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-5062264-A, on 5 November 1991. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003413

Hydraulic control system

Published
Permanent URL
Classification
Robotics & Automation › Robot Architectures
Inventors
FRENETTE REAL N, LAWRENCE PETER D
Assignee
UNIV BRITISH COLUMBIA
Original source
US-5062264-A, the United States Patent and Trademark Office, 5 November 1991
Document SHA-256
54c3551b4baaf7de8c490eb8412a63bf0768bb8c71f4597d444cedf75019ed8a

An articulated arm employs a controller to generate δr, δΘ and δz signals for controlling the movement of the arm in r, Θ and z directions to product movement of an end point from an initial location along a desired path toward a desired location. The actual location is determined by sensing the relationships between the arm segments and determining the actual location of the end point. The actual location is continuously compared with the desired location represented by the r, Θ and z signals and, if the difference between the actual location and desired location exceeds preselected limits, the δr, δΘ and δz are scaled down thereby redefining the desired location to ensure that the actual arm movement does not lag an unacceptable amount relative to the desired location.

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Abstract

An articulated arm employs a controller to generate δr, δΘ and δz signals for controlling the movement of the arm in r, Θ and z directions to product movement of an end point from an initial location along a desired path toward a desired location. The actual location is determined by sensing the relationships between the arm segments and determining the actual location of the end point. The actual location is continuously compared with the desired location represented by the r, Θ and z signals and, if the difference between the actual location and desired location exceeds preselected limits, the δr, δΘ and δz are scaled down thereby redefining the desired location to ensure that the actual arm movement does not lag an unacceptable amount relative to the desired location.

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Publication information

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Citation

OpenTechnical Publication OT-2026-000003413, “Hydraulic control system,” published September 15, 2026 at 20:24:44 UTC, https://opentechnical.org/p/OT-2026-000003413.

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