Derivative action (referred to by the letter d) measures and responds to the rate of change of process signal, and adjusts the output of the controller to minimise overshoot.

微分动作(字母d表示)测量并对过程信号变化率进行反应，调整控制器的输出以达到最小的突出峰。

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A nonlinear robust controller with a high gain observer (ONRC) was developed for a decentralized robust controller for use when not every derivative of the output is measurable.

为克服分散鲁棒控制器设计中输出量各阶导数可测要求的限制，设计了带有高增益观测器的非线性鲁棒控制器。

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A novel fuzzy fractional order proportional integral derivative (FFPID) controller based on fractional calculus is presented.

在分析分数阶微积分的基础上，提出了一种新型模糊分数阶比例积分微分控制器。

youdao

In order to ensure device anonymity, the Bluetooth sensors only send a derivative of each device's MAC address to the bridge's main controller, so consider this a Bluesnarfing safe-zone.

ENGADGET: This week only, London's Tower Bridge is the world's largest Bluetooth device