Apparatus for determining defining quantities of a planar vector

Details Apparatus for determining defining quantities of a planar vector Apparatus for determining defining quantities of a planar vector

1977-08-10

1979-02-06

Ruggiero, Joseph F.

Boots, shoes, and leggings

340347SY, G06J 100, H03K 1302

Patent

active

041387295

ABSTRACT:
A vector analyzer which serves for determining defining quantities of a planar vector in which the output of a digital counter is fed, via sine and cosine function generators, to a vector rotator addressed by the component voltages of an input vector and made to follow the value of the phase angle of the input vector by means of a three point control in order to make the output of the digital overflow counter follow the phase angle of an input vector by means of a control loop; the counter content is reset to zero without problem if the value 360.degree. of the phase angle is exceeded. The invention can be used particularly for field orientation control of rotating field machines.

REFERENCES:
patent: 3376570 (1968-04-01), Lawson
patent: 3558863 (1971-01-01), Williams, Jr. et al.
patent: 3868680 (1975-02-01), Rhodes
patent: 3896299 (1975-07-01), Rhodes

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