The system, consisting of actuators (26, 28) for an adjustable seat back (18) and leg rest (20), linked to a transducer furnishing a crude value for current actuator positions, has a control unit (30) with calculators (80, 84) giving a corrected value, and...

When the leg rest of a seat is operated a management unit estimates the motor current (60), the time derivative (62) and the sense of operation (64). If the leg rest is being retracted the current and current derivative are compared (66,70) to retraction t...

The power adjusted seat has an actuator (28) with a transducer (42) to determine the current arrangement of the seat. The control (30) for the actuator has a memory (74) to retain previous settings of the seat section (18) to be adjusted. Processors (70,72...