In order to speed up the simulation process, has established the SG1524B chip behavior model according to the switching power controller behavior in closed-loop system.

在闭环系统中为了加快仿真过程，根据开关电源控制器的行为建立了SG1524 B芯片的行为模型。

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After building closed-loop model, we can analyze and evaluate the performances of IFOG in theory, and improve it, which provide evidences for designing system and choosing optical components.

闭环模型建立后，能从理论上分析、评价、改善IFOG性能，为系统设计和选择光学器件提供了依据。

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In order to obtain the dynamic model of the process to be used by robust PID, closed-loop model identification algorithm in frequency domain is researched.

为了获得鲁棒pid参数整定所需的过程模型，进行了闭环频域模型辨识的研究。

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Outside the U.S., Amex has taken a step away from its closed loop model where it issues its own credit cards and also acts as the acquirer for merchants accepting the card.

FORBES: Quick Take

American Express says it is uniquely positioned to offer the service thanks to its "closed-loop" business model in which it acts as card issuer, merchant acquirer and payment processing operator.

BBC: Foursquare and Amex join forces in UK to offer discounts

There are many areas of overlap between biomimicry and "cradle-to-cradle" particularly in the way that ecosystems present a great model of closed loop systems in which any waste from one organism becomes the nutrient for something else.

CNN: STORY HIGHLIGHTS