305 High-Speed Fixed Quantity Supply of Work by Intermission Drive on Vibration Transportation Machine : Realization by Open Loop Control that Imitates Velocity Feedback Control

2006 ◽  
Vol 2006.81 (0) ◽  
pp. _3-9_
Author(s):  
Yasuaki YOSHIKAWA ◽  
Yutaka KURITA ◽  
Yuichi MATSUMURA ◽  
Takayuki MASUDA
Keyword(s):  
Feedback Control ◽  
High Speed ◽  
Open Loop ◽  
Open Loop Control ◽  
Velocity Feedback ◽  
Loop Control ◽  
Fixed Quantity

Error field feedback control system in the Keda Torus eXperiment and open loop control experiment

2020 ◽  
Vol 27 (5) ◽  
pp. 052502
Author(s):  
Yanqi Wu ◽  
Hong Li ◽  
Yolbarsop Adil ◽  
Yuan Zhang ◽  
Wentan Yan ◽  
...  
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Control Experiment ◽  
Open Loop ◽  
Feedback Control System ◽  
Open Loop Control ◽  
Loop Control ◽  
Error Field

SYNCHRONIZATION ANALYSIS FOR MULTIVALUED LOGICAL NETWORKS

2013 ◽  
Vol 23 (04) ◽  
pp. 1350059 ◽  
Author(s):  
FANGFEI LI ◽  
JITAO SUN
Keyword(s):  
Feedback Control ◽  
Tensor Product ◽  
Discrete Time ◽  
Open Loop ◽  
Open Loop Control ◽  
Loop Control ◽  
Logical Network ◽  
Discrete Time Systems ◽  
Time Systems ◽  
Product Of Matrices

The synchronization for two k-valued logical networks of the same dimensions is studied in this paper. First, based on the theory of semi-tensor product of matrices, the master-slave systems (two k-valued logical networks) are converted into discrete-time systems. Second, both open-loop control and feedback control are provided to make the slave network synchronize with the master k-valued logical network. Finally, examples are provided to illustrate the efficiency of the obtained results.

scholarly journals Modal Engineering for MEMS Devices: Application to Galvos and Scanners

2020 ◽  
Author(s):  
Lawrence Barrett ◽  
Matthias Imboden ◽  
Josh Javor ◽  
David K. Campbell ◽  
David J. Bishop
Keyword(s):  
High Speed ◽  
Open Loop ◽  
Optical Systems ◽  
Control Algorithms ◽  
Mems Devices ◽  
Open Loop Control ◽  
Optical Elements ◽  
Loop Control ◽  
High Q ◽  
Change Position

Optical systems typically use galvanometers (aka galvos) and scanners. Galvos move optical elements such as mirrors, quasi-statically, from one static position to another, and an important figure of merit is their step-settle relaxation time. Scanners move in an oscillatory fashion, typically at the device resonant frequency. MEMS devices, which have many advantages and are often used in such optical systems, are typically high Q devices. Moving from one position to another for a galvo or one frequency/amplitude to another for scanners, can take many periods to settle following the ring down. During these transitions, the optical system is inactive and the time is not being efficiently used. In this article we show how a novel class of open loop control algorithms can be used to rapidly change position, frequency and amplitude, typically in well under the period of the device. We show how the MEMS designer can excite, with complete, high-speed control, a vibrational mode of the system. We call this modal engineering, the ability to control the modes of the system in a practical, fast way. This control of the modes is accomplished with open loop control algorithms.

A Method for Teaching Feedback Control Using the Enhanced Mass-Spring-Damper System

2011 ◽  
Author(s):  
Dean H. Kim
Keyword(s):  
Feedback Control ◽  
Control Strategies ◽  
Open Loop ◽  
Open Loop Control ◽  
Improve Performance ◽  
Loop Control ◽  
System Input ◽  
Advanced Controls ◽  
Mass Spring ◽  
Force Generator

This paper presents a method that the author has developed to teach students about the need for feedback control and to facilitate the understanding of controller implementation. The initial discussion focuses on the limitations of open-loop control to improve performance of the traditional mass-spring-damper system. The key contribution is the introduction of an enhanced mass-spring-damper system with a position sensor and force generator, resulting in voltages as system input and output. This enhanced system provides a foundation for discussion of basic feedback control strategies such as PID-Control in addition to advanced controls concepts. The analysis is provided in time-domain to facilitate the understanding of these important controls concepts.

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