Magnetic torsion meter for measuring torques

A motor operator servo control device including a magnetic torsion meter, said torsion meter comprising:

• first and second rotors respectively connected to a first and a second section of a rotating shaft, said first and second rotors each comprising an annular disk made of nonmagnetic material and two concentric coils of ferromagnetic pins, pins of said first rotor facing pins of the second rotor, while defining two measuring gaps;
• and exterior magnetic circuit including two gaps;
• a continuous magnetic source of excitation bounded by said exterior magnetic circuit and creating a magnetic flux;
• at least two magnetic induction sensors housed in one of said gaps of said magnetic circuit measuring magnetic flux;
• and
• a treatment circuit connected to said sensors, said treatment circuit producing an electric output signal proportional to the torque exerted on the rotating assembly.

An engine including an engine shaft connected to a magnetic torsion meter, said torsion meter comprising:

• first and second rotors respectively connected to a first and a second section of a rotating shaft, said first and second rotors each comprising an annular disk made of nonmagnetic material and two concentric coils of ferromagnetic pins, pins of said first rotor facing pins of the second rotor, while defining two measuring gaps;
• and exterior magnetic circuit including two gaps;
• a continuous magnetic source of excitation bounded by said exterior magnetic circuit and creating a magnetic flux;
• at least two magnetic induction sensors housed in one of said gaps of said magnetic circuit measuring magnetic flux;
• and
• a treatment circuit connected to said sensors, said treatment circuit producing an electric output signal proportional to the torque exerted on the rotating assembly.