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Browse Prior Art Database

Adaptive Pivot Control

IP.com Disclosure Number: IPCOM000112625D
Original Publication Date: 1994-Jun-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Gallo, FD: AUTHOR [+3]

Abstract

This article describes a method of control for a rotating mechanism that adapts to the changing characteristics of the electrical and mechanical components within the mechanism. Power is provided to the motor that controls the rotation operation only for the duration required to complete the rotation to the desired target. The duration of time that power is required to complete a rotation operation gradually changes over time.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 69% of the total text.

Adaptive Pivot Control

      This article describes a method of control for a rotating
mechanism that adapts to the changing characteristics of the
electrical and mechanical components within the mechanism.  Power is
provided to the motor that controls the rotation operation only for
the duration required to complete the rotation to the desired target.
The duration of time that power is required to complete a rotation
operation gradually changes over time.

      In order to control the operation of a rotating pivot platform
from one side of a structure to another, the following components are
used:

o   Rotate Motor

o   Rotate-to-front-complete sensor

o   Rotate-to-back-complete sensor

o   Platform being rotated

o   Digital I/O (input and output lines)

o   Controller

      Digital input and output lines are available to the controller.
The output lines are used to provide and remove power to the rotate
motor while the input lines are for sensor information.

      To rotate the platform to the front, a digital output signal is
used to provide the initial power to the rotate motor, causing a
clockwise rotation for a specified period of time.  This power is
then turned off to allow some coasting of the platform.  If, at the
end of the coast cycle, the platform has not reached its target, the
rotate motor is pulsed on then off until the target is reached or a
timeout has occurred.

      The amount of time the motor is powered during the ini...