Angular displacement measuring arrangement, angular displacement measuring system and electric motor

A rotary angle measuring arrangement comprising:

• a shaft which is configured to rotate, the shaft comprising a longitudinal shaft axis;
• and
• a rotary angle measuring system which is configured to detect a rotary shaft movement, the rotary angle measuring system comprising,
• an excitation unit which is configured to generate an excitation magnetic field and which is co-rotatably connected to the shaft, the excitation unit comprising at least one permanent magnetic excitation magnet,
• a printed circuit board arrangement comprising,
• a first printed circuit board section which is arranged perpendicular to the longitudinal shaft axis, and
• a second printed circuit board section which is arranged at an angle with respect to the first printed circuit board section and which is electrically connected to the first printed circuit board section via a connection device,
• a first magnetic field sensor which is arranged on the first printed circuit board section, the excitation magnetic field generated by the excitation unit being detectable via the first magnetic field sensor, and
• an evaluation electronics which is arranged on the printed circuit board arrangement and which is electrically connected to the first magnetic field sensor, wherein,
• the second printed circuit board section is arranged so that a parallel projection of the second printed circuit board section onto a longitudinal plane which is parallel to the longitudinal shaft axis and a parallel projection of the excitation unit onto the longitudinal plane at least partially overlap,
• the evaluation electronics comprises at least one electronic component which is arranged between the first printed circuit board section and the first magnetic field sensor,
• the rotary angle measuring system further comprises a second magnetic field sensor via which the excitation magnetic field generated by the excitation unit is detectable, and
• the first magnetic field sensor and the second magnetic field sensor are arranged on opposite sides of the first printed circuit board section.