An approach of direct synthesis of proportional,integral,and derivative controller(PID) for unstable time delayed process was presented.
直接在时域上设计不稳定时滞过程比例积分微分(PID)控制器。
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Voters had to show that they'd visited at least five studios, and the voting process was delayed for a few days so they had time to think about their choices.
WSJ: Brooklyn Museum Tests A Democratic Model
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