Rotary actuator with selectable response characteristics

Details Rotary actuator with selectable response characteristics Rotary actuator with selectable response characteristics

H - Electricity

02

K

310/56

H02K 7/00 (2006.01) H01F 7/13 (2006.01) H01F 7/14 (2006.01)

Patent

CA 1134893

Abstract of the Disclosure A rotary actuator is disclosed useful in controlling throttle settings on internal combustion engines. The angular displacement of the actuator shaft is a function of the current applied to the actuator. In the disclosed embodiment the relation- ship between current and angular displacement has three distinct regions: increasing displacement, linear displacement and decreasing displacement with respect to applied current. These regions are matched to the engine characteristics to produce a desired response from the engine. The actuator consists of a rotor biased by a coil spring to a first position and displaceable to a plurality of intermediate posi- tions by magnetic actuation from pole pieces asso- ciated with current carrying coils. The arrangement and configuration of the rotor and pole pieces pro- duce the desired three region response characteristic.

361932

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