Method of controlling the rotational speed of a rotary shaft

Details Method of controlling the rotational speed of a rotary shaft Method of controlling the rotational speed of a rotary shaft

1981-07-21

1983-09-20

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

180176, 36443107, B60K 3100, F02D 1110

Patent

active

044049420

ABSTRACT:
Speed pulses having a frequency proportional to an actual rotational speed V of a rotary shaft are generated. A period T of time which is necessary for generating a predetermined number of the speed pulses is measured, and then the difference .DELTA.T between the measured time T and a predetermined time to which is equal to the measured time T when the rotary shaft rotates at a desired speed V.sub.o is calculated. A number N of the speed pulses generated within a predetermined period of time is measured. Thereafter, the calculated difference .DELTA.T, the measured number N and a predetermined number N.sub.o which is equal to the measured number N when the rotary shaft rotates at the desired speed V.sub.o are multiplied by each other to obtain a value .DELTA.V which corresponds to the difference between the actual speed V and the desired speed V.sub.o. Then, in response to the calculated value .DELTA.V, the rotational speed of the rotary shaft is controlled to reduce the above-mentioned difference to zero.

REFERENCES:
patent: 3891046 (1975-06-01), Oicles
patent: 4321901 (1982-03-01), Kobayashi et al.
patent: 4328776 (1982-05-01), Kono et al.

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