초록 ▼

Control apparatus, for example a thrust demand unit or “throttle box”for an aircraft, comprises a manually movable control grip coupled to drive motor means comprising twin magnetically interactive components and operable for automatic movement of the control grip, e.g. under autopilot control, whil

Control apparatus, for example a thrust demand unit or “throttle box”for an aircraft, comprises a manually movable control grip coupled to drive motor means comprising twin magnetically interactive components and operable for automatic movement of the control grip, e.g. under autopilot control, while allowing override by the operator e.g. the pilot of an aircraft. The drive motor may be a linear motor, particularly a motor comprising a rod and rider each having pole teeth defining relative positions of minimum magnetic reluctance between the rod and rider, and winding means for moving the rider stepwise between said positions.

대표청구항 ▼

A control device for enabling an operator to control associated apparatus to which, in use, the control device is connected, the control device comprising: a fixed support member; a control member supported by the support member and movable with respect thereto by said operator; output means connect

A control device for enabling an operator to control associated apparatus to which, in use, the control device is connected, the control device comprising: a fixed support member; a control member supported by the support member and movable with respect thereto by said operator; output means connected to the control member and operable for transmitting to said associated apparatus control signals indicative of the position of said control member relative to the support member; an electrical stepper motor of which the stator part is connected to said support member and the mover part is connected to said control member; and motor energization means which is connected to said stepper motor and which is operable for energizing said motor to generate, at least while said control member is at one or more discrete positions in its range of movement relative to the support member, an attractive force between the stator and mover parts of the motor tending to resist manual movement of the control member.