| 摘要 |
A feedback system (300) comprises a control system, a feedback stage (320) which includes a variable gain stage (322), and a gain controller (330). The control system (310) has an input (312) for a feedback signal and, responsive to the feedback signal, provides an error signal indicative of whether a control signal in the control system (310) is above or below a convergence value. The feedback stage (320) generates the feedback signal from the error signal. The gain controller (330) is adapted to, in response to the error signal indicating that the control signal has crossed the convergence value, reduces the gain of the variable gain stage (322).
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