Closed-loop feedback-control system for improved tracking in magnetically actuated micromirrors

2002 ◽  
Author(s):  
S. Pannu ◽  
C. Chang ◽  
R.S. Muller ◽  
A.P. Pisano
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Closed Loop ◽  
Feedback Control System ◽  
Magnetically Actuated ◽  
Loop Feedback ◽  
Closed Loop Feedback

Stability analysis in machining process by using adaptive closed-loop feedback control system in turning process

2020 ◽  
pp. 107754632095261
Author(s):  
Kashfull Orra ◽  
Sounak K Choudhury
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Closed Loop ◽  
Machining Process ◽  
Feedback Control System ◽  
Turning Process ◽  
Tool Vibration ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
The Stability

The study presents model-based mechanism of nonlinear cutting tool vibration in turning process and the strategy of improving cutting process stability by suppressing machine tool vibration. The approach used is based on the closed-loop feedback control system with the help of electro–magneto–rheological damper. A machine tool vibration signal generated by an accelerometer is fed back to the coil of a damper after suitable amplification. The damper, attached under the tool holder, generates counter forces to suppress the vibration after being excited by the signal in terms of current. The study also discusses the use of transfer function approach for the development of a mathematical model and adaptively controlling the process dynamics of the turning process. The purpose of developing such mechanism is to stabilize the machining process with respect to the dynamic uncut chip thickness responsible for the type-II regenerative effect. The state-space model used in this study successfully checked the adequacy of the model through controllability and observability matrices. The eigenvalue and eigenvector have confirmed the stability of the system more accurately. The characteristic of the stability lobe chart is discussed for the present model-based mechanism.

A Kind of a Controller with Digital Computer as a Compensator

2013 ◽  
Vol 753-755 ◽  
pp. 2543-2547
Author(s):  
Wei Yan ◽  
Xian Qi Huang ◽  
Jun Fan
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Transient Response ◽  
Digital Computer ◽  
Closed Loop ◽  
Feedback System ◽  
Feedback Control System ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
The Stability

A digital computer may serve as a compensator or a controller in a feedback control system. We may use the z'-transform of a transfer function to analyze the stability and transient response of a system. Thus, we may readily determine the response of a closed-loop feedback system with a digital computer serving as the compensator (or controller) block.

Closed-loop feedback control of microfluidic cell manipulation via deep-learning integrated sensor networks

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Ningquan Wang ◽  
Ruxiu Liu ◽  
Norh Asmare ◽  
Chia-Heng Chu ◽  
Ozgun Civelekoglu ◽  
...  
Keyword(s):  
Deep Learning ◽  
Sensor Networks ◽  
Feedback Control ◽  
Closed Loop ◽  
Microfluidic System ◽  
Cell Manipulation ◽  
Integrated Sensor ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
On Chip

An adaptive microfluidic system changing its operational state in real-time based on cell measurements through an on-chip electrical sensor network.

Closed-loop feedback control of product properties in flexible metal forming processes with mobile tools

CIRP Annals ◽  
2009 ◽  
Vol 58 (1) ◽  
pp. 287-290 ◽  
Author(s):  
Julian M. Allwood ◽  
Omer Music ◽  
Ankor Raithathna ◽  
Stephen R. Duncan
Keyword(s):  
Feedback Control ◽  
Metal Forming ◽  
Closed Loop ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
Flexible Metal
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