| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of detecting and avoiding imminent control instability in a system that applies a stimulus to an object. <P>SOLUTION: A system 110 measures a parameter signal OSC that represents a system parameter indicating oscillation of an object 100 by a sensor 130 while a stimulus is being applied to the object 100 by a stimulus effector 120. A control system 140 monitors maximum amplitude of a dominant tone in a selected frequency band of the parameter signal; and provides the stimulus effector 120 with a signal CS for avoiding control instability if the maximum amplitude persists over a specified period of time. <P>COPYRIGHT: (C)2013,JPO&INPIT |
