scholarly journals Closed loop analysis of the bottleneck buffer under adaptive window controlled transfer of http-like traffic

2003 ◽  
Author(s):  
Arzad A Kherani ◽  
Anurag Kumar
Keyword(s):  
Closed Loop ◽  
Loop Analysis ◽  
Adaptive Window

Outlook of the Dynamic Behavior of Closed-Loop Control through Open-Loop Analysis for Intensified Separation Processes

2018 ◽  
Vol 57 (49) ◽  
pp. 16795-16808
Author(s):  
Julián Cabrera-Ruiz ◽  
César Ramírez-Márquez ◽  
Shinji Hasebe ◽  
Salvador Hernández ◽  
J. Rafael Alcántara Avila
Keyword(s):  
Dynamic Behavior ◽  
Closed Loop ◽  
Open Loop ◽  
Closed Loop Control ◽  
Loop Analysis ◽  
Separation Processes ◽  
Loop Control

scholarly journals A Digital Calibration Technique of MEMS Gyroscope for Closed-Loop Mode-Matching Control

Micromachines ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 496
Author(s):  
Cheng Li ◽  
Bo Yang ◽  
Xin Guo ◽  
Lei Wu
Keyword(s):  
Theoretical Analysis ◽  
Real Time ◽  
Closed Loop ◽  
Mode Matching ◽  
Loop Analysis ◽  
Calibration Technique ◽  
Mems Gyroscope ◽  
Real Time Mode ◽  
Digital Excitation ◽  
Bias Instability

A digital excitation-calibration technique of dual-mass MEMS gyroscope for closed-loop mode-matching control is presented in this paper. The technique, which takes advantage of the symmetrical amplitude response of MEMS gyroscope, exploits a two-side excitation signal to actuate the sense mode to obtain the corresponding DC tuning voltage. The structural characteristics of dual-mass decoupled MEMS gyroscope and the tuning principle of excitation-calibration technique are introduced firstly. Then, the scheme of digital excitation-calibration system for the real-time mode-matching control is presented. Simultaneously, open-loop analysis and closed-loop analysis are deduced, respectively, to analyze the sources of tuning error and system stability. To verify the validity of the scheme and theoretical analysis, the system model was established by SIMULINK. The simulation results are proved to be consistent with the theoretical analysis, verifying the feasibility of the digital excitation-calibration technique. The control algorithms of the system were implemented with a FPGA device. Experimental results demonstrate that digital excitation-calibration technique can realize mode-matching within 1 s. The prototype with real-time mode-matching control has a bias instability of 0.813 ∘ /h and an ARW (Angular Random Walk) of 0.0117 ∘ / h . Compared to the mode-mismatching condition, the bias instability and ARW are improved by 3.25 and 4.49 times respectively.

124. Closed loop analysis of the kidney??s blood pressure regulatory capacity in conscious dogs

1991 ◽  
Vol 9 (6) ◽  
pp. S476
Author(s):  
P. Persson ◽  
H. Ehmke ◽  
B. Nafz ◽  
A. Just ◽  
H. Kirchheim
Keyword(s):  
Blood Pressure ◽  
Closed Loop ◽  
Conscious Dogs ◽  
Loop Analysis ◽  
Regulatory Capacity
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