Shielding of magnetoelastic torque transducers from low-frequenc

Details Shielding of magnetoelastic torque transducers from low-frequenc Shielding of magnetoelastic torque transducers from low-frequenc

1991-02-26

1992-01-28

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

7386236, G01L 310, H01F 4100

Patent

active

050833596

ABSTRACT:
A method for preventing magneto-elastic torque transducers (1,2) from being influenced by a static, axially-extending magnetic field (9) comprises dividing the driving shaft between the driving source and the load in such a way that the shaft (3) between the driving source and the transducer shaft and the shaft (4) between the transducer shaft and the load, respectively, are provided with a shaft part (7,8) of non-magnetic material and that the transducer and the transducer shaft including the non-magnetic shaft parts are surrounded by an external magnetic shield (5) provided with flanges such that a very small air gap is present between the shield and the non-magnetic shaft parts.

REFERENCES:
patent: 4506544 (1986-03-01), Blomkvist et al.
patent: 4780671 (1988-10-01), Hase et al.

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