Phase angle detector

Details Phase angle detector Phase angle detector

1982-07-19

1985-05-28

Gruber, Felix D.

Boots, shoes, and leggings

328133, 36443108, G06F 1520, G01R 2500

Patent

active

045204497

ABSTRACT:
A phase angle detector for computing the phase angle of the individual impulses imparted to the crankshaft of an internal combustion engine having means for computing the sin and cos functions of each torque impulse in response to the instantaneous rotational velocity of the engine's crankshaft, means for detecting a change in the rotational velocity of the engine's crankshaft at the beginning and end of each torque impulse, means for correcting the value of the generated sin function as a function of the difference the crankshaft's rotational velocity at the beginning and end of the torque impulse, and means for computing the phase angle of the torque impulse from the cos and corrected sin functions.

REFERENCES:
patent: 4197767 (1980-04-01), Leung
patent: 4307346 (1981-12-01), Kurosawa et al.
patent: 4337435 (1982-06-01), Munoz
patent: 4357662 (1982-11-01), Schira et al.
patent: 4360889 (1982-11-01), Liedtke
patent: 4400664 (1983-08-01), Moore

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