Magneto-rheological clutch with sensors measuring electromagnetic field strength

A clutch system for transmitting torque from an input shaft to an output shaft, the system comprising:

• a plurality of input torque transmission disks coupled to said input shaft;
• a plurality of output torque transmission disks coupled to said output shaft, portions of said input torque transmission disks being interleaved with portions of said output torque transmission disks;
• a torque transmission fluid disposed between said interleaved input torque transmission disks and output torque transmission disks, said torque transmission fluid having a viscosity which changes based on a strength of an electromagnetic field passing through said transmission fluid;
• field means for providing an electromagnetic field which passes through said torque transmission fluid;
• a plurality of sensors for measuring a strength of said electromagnetic field at different radial positions along said input torque transmission disks or along said output torque transmission disks, wherein said plurality of sensors measures said electromagnetic field in said torque transmission fluid.