DC servomotor position control

Details DC servomotor position control DC servomotor position control

1983-08-16

1985-03-26

Shoop, William M.

Electricity: motive power systems

Positional servo systems

With stabilizing features

318561, 318284, 318266, G05B 1300

Patent

active

045075948

ABSTRACT:
An apparatus and method for position control by a DC servomotor having improved stiffness. An electric current (i.sub.R) of the servomotor is interpreted anew and defined as follows: ##EQU1## where .theta. is an observed rotation angle of the load (L), .theta..sub.c is a precommanded value, K.sub.F is a feedback coefficient, and K.sub.V is a velocity coefficient. After normalizing the above equation, stiffness (S) can be increased by incorporating a limiter into the control system, thus providing prompt response and smooth covergence of .theta. to .theta..sub.c with a high degree of stiffness maintained at the precommanded angle (.theta..sub.c).

REFERENCES:
patent: 4338552 (1982-07-01), Pilz et al.
patent: 4338555 (1982-07-01), Rhodes

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