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Intermittent control is a feedback control method which not only explains some human control systems but also has applications to control engineering. In the context of control theory, intermittent control provides a spectrum of possibilities between the two extremes of continuous-time and discrete-time control: the control signal consists of a sequence of (continuous-time) parameterised trajectories whose parameters are adjusted intermittently. It is different from discrete-time control in that the control is not constant between samples; it is different from continuous-time control in that the trajectories are reset intermittently. As a class of control theory, intermittent predictive control is more general than continuous control and provides a new paradigm incorporating continuous predictive and optimal control with intermittent, open loop (ballistic) control. There are at least three areas where intermittent control is relevant. Firstly, continuous-time model-based predictive control where the intermittency is associated with on-line optimisation. Secondly, event-driven control systems where the intersample interval is time varying and determined by the event times. Thirdly, explanation of physiological control systems which, in some cases, have an intermittent character. This intermittency may be due to the “computation” in the central nervous system. Conventional sampled-data control uses a zero-order hold, which produces a piecewise-constant control signal and can be used to give a sampled-data implementation which approximates previously-designed continuous-time controller. In contrast to conventional sampled data control, intermittent control explicitly embeds the underlying continuous-time closed-loop system in a ''system-matched'' hold which generates an open-loop intersample control trajectory based on the underlying continuous-time closed-loop control system. == History == Intermittent control initially evolved separately in the engineering and physiological literature. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Intermittent control」の詳細全文を読む スポンサード リンク
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