For the flow regulation of the controllable traffic in high-speed computer networks, optimization of control parameters directly influence on a PI controller.

对于计算机高速网络中能控交通流的调节，PI控制器的参数优化直接影响控制系统的性能。

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However, it is an effective way of overcoming the instability to design a PI controller, to select proper parameters, to set up a digital model and to simulate a control system.

本文对风力矩作用下的雷达接收系统建立数学模型，适当选择结构参数，设计PI控制器并对控制系统进行仿真，是一种在自动控制中工程设计的有效实用的方法。

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At a recent competition for schools to come up with clever uses for the Raspberry Pi - the ultra-cheap micro-controller - there was a dearth of entries from state schools.

BBC: Have private schools helped teen app makers to thrive?