Automatic positioning system
AssigneeNuovo Pignone S.p.A.
InventorsGiorgio Bergamini, Vito Gargano
Life of this patent
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Abstract
An automatic positioning system in which a divider element divides the space between the initial position and the required final position into a predetermined number of well defined measurement positions at predetermined but not necessarily constant intervals, at these positions measurement means determining the effective time, velocity and acceleration values and hence the extent of disturbances as an acceleration difference, while suitable calculation means define the acceleration change to be applied to the drive member to compensate said disturbances and restore the predefined law of motion; two different calculation means are also defined.
Claims4
A system for automatic positioning in accordance with a predefined theoretical relationship, comprising:
- a drive member with a relative control device,
- a position measurer,
- a time measurer,
- a main memory storing at least a set velocity V*.sub.set, a set acceleration a*, an initial position S.sub.0 and a final required position S.sub.set,
- a dividing element divides the space between said initial position S.sub.0 and said final position S.sub.set into a predetermined number of measurement positions at predetermined non-uniform intervals, the dividing element is connected with said position measurer, to a comparator having an output that activates a measurement and calculation means for determining effective velocity and acceleration values at said measurement positions, and from the velocity and acceleration values the measurement and calculation means calculates an extent of disturbance as an acceleration difference and as an acceleration change to be made to said drive member to compensate for said disturbance.
A system for automatic positioning in accordance with a predefined theoretical relationship, comprising:
- a drive member with a relative control device,
- a position measurer,
- a time measurer,
- a main memory storing at least a set velocity V*.sub.set, a set acceleration a*, an initial position S.sub.o and a final required position S.sub.set,
- a dividing element divides the space between said initial position S.sub.o and said final position S.sub.set into a predetermined number of measurement positions at predetermined but not necessarily constant intervals, the dividing element is connected with said position measurer to a comparator having an output that activates a measurement and calculation means for determining effective velocity and accleration values at said measurement positions, and from the velocity and acceleration values the measurement and calculation means calculates an extent of disturbance as an accleration change to be made to said drive member.
Dependencies are inferred from the claim text.