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Automation in the Metal Industries Automatic Control Systems
The Open Loop Speed Control The Closed Loop Position Control
INERTIA AND FRICTION IN CONTROL
12 other sections not shown
acceleration amplitude angular velocity applied Argand diagram armature automatic control systems basic block diagram circuit closed loop frequency closed loop gain closed loop system complementary function complex number coulomb friction curve d.c. amplifier damping ratio electronic amplifier error signal field current flux frequency response plot increased inductor inertia input and output input frequency input function input shaft input signal inverse Nyquist diagram inverse open loop load loop frequency response magnetic amplifier maximum motor-generator natural undamped frequency open loop frequency open loop gain operation order position control oscillation output response output shaft overshoot phase angle phase displacement potentiometer quantity rate feedback rate feedforward rate of change rotation second order position second order system shown in Fig Simple Harmonic Motion sinusoidal sinusoidal input speed stabilising steady state response step input stiction synchro torque constant torque developed torque equation torque output transfer function transient response vector velocity lag viscous friction voltage zero