Device for determining the rotation angle of a shaft in an aircraft

An aircraft having a device for determining the rotation angle of a shaft in the aircraft, the device comprising:

• a shaft designed for operating a component the component selected from the group consisting of a brake flap, a landing flap, a landing slat, a rudder, an aileron and an elevator, the shaft having a first region and a second region,
• a motor which rotates the shaft to detect first rotation data corresponding to a first rotation angle of the first region of the shaft, the motor being designed to carry out said detection in an absolute manner;
• a position pickup unit designed to detect second rotation data corresponding to a second rotation angle of the second region of the shaft;
• a synchronization unit designed to synchronize the first rotation data with the second rotation data;
• and
• a control unit designed to detect and evaluate an incorrectness of the second rotation data provided by the position pickup unit on the basis of the first rotation data.

A method for determining the rotation angle of a shaft in an aircraft, comprising the steps of:

• rotating the shaft by a motor;
• detecting first rotation data that corresponds to a first rotation angle of a first region of the shaft by the motor in an absolute manner;
• detecting second rotation data that corresponds to a second rotation angle of a second region of the shaft by a position pickup unit;
• transmitting the first rotation data from the motor to a control unit;
• transmitting the second rotation data from the position pickup unit to the control unit;
• determining a zero point of the motor on the basis of the second rotation data provided by the position pickup unit;
• synchronizing the first rotation data with the second rotation data;
• and
• controlling or regulating the rotation of the shaft on the basis of the transmitted first and second rotation data by the control unit.

A method for determining the rotation angle of a shaft in a aircraft, comprising the steps of:

• rotating the shaft by a motor;
• detecting first rotation data that corresponds to a first rotation angle of a first region of the shaft by the motor in an absolute manner;
• detecting second rotation data that corresponds to a second rotation angle of a second region of the shaft by a position pickup unit;
• transmitting the first rotation data from the motor to a control unit;
• transmitting the second rotation data from the position pickup unit to the control unit;
• detecting and evaluating an incorrectness of the second rotation data provided by the position pickup unit on the basis of the first rotation data;
• synchronizing the first rotation data with the second rotation data;
• and
• controlling or regulating the rotation of the shaft on the basis of the transmitted first and second rotation data by the control unit.