With the help of the method, the control accuracy similar to that of close loop system can be obtained and the system has the same stability as that of open loop system.

采用这种控制方式，可以获得类似闭环系统的控制精度和开环系统的稳定性。

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The control of ignition advance Angle is mostly open-loop control and the control data is obtained from experiment. Close-loop control method is applied to avoid engine knock.

对点火提前角的控制主要是开环控制，控制数据由试验得到，对爆震现象采取了闭环控制。

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This paper presents a new algorithm which adopts open loop and close loop congestion control. It cooperates the permits and time stamps schemes, together with the FCFS scheduling policy.

本文提出了一种同时采用开环和闭环控制，结合许可证控制和时间戳调度策略，以FCFS方式服务的拥塞回避新算法。

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