Patent ID: 6583596
Filing Date: 2003-06-24
Classification: B60N,B64D

Abstract:
A seat comprising parts that are movable relative to one another, at least one actuator for controlling at least one moving part of the seat, and a control unit for controlling the or each actuator, said control unit comprising:user control means for controlling a main actuator selected by a user; tracking means for tracking the current position of the or each actuator; and management means for managing the control of the or each actuator and adapted to ensure that no moving part of the seat reaches a forbidden region; wherein said management means comprise: computation means for computing, in a frame of reference associated with a fixed portion of the seat, the current position of at least one predetermined critical point of the seat on the basis of the current position(s) of the or each actuator, and on the basis of the geometrical characteristics of the seat; evaluation means for evaluating the current position of the or each critical point of the seat relative to an associated predetermined boundary in said frame of reference and defining said forbidden region; and control means for controlling at least one actuator independently of the control selected by the user.