Evaluation of a Low-Cost Microcontroller for Real-Time Control Education and Prototyping

2014 ◽  
Author(s):  
Ryan W. Krauss
Keyword(s):  
Feedback Control ◽  
Real Time ◽  
Closed Loop ◽  
Low Cost ◽  
Serial Communication ◽  
Real Time Control ◽  
Time Control ◽  
Active User ◽  
Bode Plots ◽  
Control Education

Arduino microcontrollers are popular, low-cost, easy-to-program, and have an active user community. This paper seeks to quantitatively assess whether or not Arduinos are a good fit for real-time feedback control experiments and controls education. Bode plots and serial echo tests are used to assess the use of Arduinos in two scenarios: a prototyping mode that involves bidirectional real-time serial communication with a PC and a hybrid mode that streams data in real-time over serial. The closed-loop performance with the Arduino is comparable to that of another more complicated and more expensive microcontroller for the plant considered. Some practical tips on using an Arduino for real-time feedback control are also given.

Is Deterministic Real Time Control Always Necessary? A Time Scales Perspective

2014 ◽  
Author(s):  
Dylan Poulsen ◽  
Ian Gravagne ◽  
John M. Davis
Keyword(s):  
Feedback Control ◽  
Real Time ◽  
Linear Systems ◽  
Time Scales ◽  
Closed Loop ◽  
Control Design ◽  
Real Time Control ◽  
Time Control ◽  
Real Time Computing ◽  
Sampling Times

Practitioners of feedback control design often must spend a great deal of time and effort dealing with the complexities of deterministic, or “real time” computing. In this paper, we argue that if certain conditions are met, stable feedback control is possible under non-deterministic conditions. In particular, certain classes of linear systems may be uniformly exponentially stabilized by placing the closed-loop poles within an “osculating circle” if the statistics of the controller’s sampling times are known.

A Low Cost Fault-Tolerant Multiprocessor System for Real-Time Control

1986 ◽  
Vol 19 (13) ◽  
pp. 113-117
Author(s):  
J.J. Serrano ◽  
C. Cebrián ◽  
J. Vila ◽  
R. Ors
Keyword(s):  
Real Time ◽  
Fault Tolerant ◽  
Low Cost ◽  
Multiprocessor System ◽  
Real Time Control ◽  
Time Control

Translation + Pendaphonics = Movement Modulated Media

Leonardo ◽  
2012 ◽  
Vol 45 (4) ◽  
pp. 322-329 ◽  
Author(s):  
Byron Lahey ◽  
Winslow Burleson ◽  
Elizabeth Streb
Keyword(s):  
High Resolution ◽  
Real Time ◽  
Low Cost ◽  
Vertical Wall ◽  
State University ◽  
Arizona State University ◽  
Motion Sensing ◽  
Real Time Control ◽  
Projected Image ◽  
Time Control

Translation is a multimedia dance performed on a vertical wall filled with the projected image of a lunar surface. Pendaphonics is a low-cost, versatile, and robust motion-sensing hardware-software system integrated with the rigging of Translation to detect the dancers' motion and provide real-time control of the virtual moonscape. Replacing remotely triggered manual cues with high-resolution, real-time control by the performers expands the expressive range and ensures synchronization of feedback with the performers' movements. This project is the first application of an ongoing collaboration between the Motivational Environments Research Group at Arizona State University (ASU) and STREB Extreme Action Company.

scholarly journals The open real-time control (RTC)-Tools software framework for modeling RTC in water resources sytems

2014 ◽  
Vol 17 (1) ◽  
pp. 130-148 ◽  
Author(s):  
D. Schwanenberg ◽  
B. P. J. Becker ◽  
M. Xu
Keyword(s):  
Decision Support ◽  
Water Resources ◽  
Feedback Control ◽  
Real Time ◽  
Large Scale ◽  
Water Systems ◽  
Software Framework ◽  
River Rhine ◽  
Real Time Control ◽  
Time Control

Real-time control-Tools is a novel software framework for modeling real-time control and decision support in water resources systems. It integrates different control paradigms ranging from simple feedback control strategies with triggers, operating rules and controllers to advanced optimization-based approaches such as model predictive control (MPC). A key feature of the package is the modular integration of modeling components, related adjoint models, and optimization algorithms which makes it well suited for the control of large-scale water systems. Interfaces enable its integration into Supervisory Control and Data Acquisition systems, operational stream flow forecasting, and decision support systems as well as hydraulic modeling packages. This paper presents an overview of the novel software framework, gives an introduction into the underlying control theory for which it has been developed and discusses the related software architecture. A first case describes an innovative combination of binary decision trees and feedback control in application to the modeling of a highly regulated River Rhine reach along the German–French border. Two additional cases present the efficient application of MPC to the short-term management of two large-scale water systems in the Netherlands and the USA.

Design of Process Controller Based on PCI Interface and CPLD Technology

2012 ◽  
Vol 614-615 ◽  
pp. 1562-1565
Author(s):  
Yu Sen Li ◽  
Ying Sun
Keyword(s):  
Real Time ◽  
High Speed ◽  
Low Cost ◽  
Pulse Signal ◽  
Pci Bus ◽  
Signal Acquisition ◽  
Real Time Control ◽  
Time Control ◽  
Interface Chip ◽  
Design Ideas

In order to realize the sensor signal acquisition and analysis of data, according to data acquisition system design ideas of the PCI bus, applying to CPLD complex programmable controller and CH365 interface chip and combined with the actual needs of data collection ,designed a kind of low cost, high speed process controller. CPLD realizes data cache control and the control of reading. This design can gather 16 roads analog signals and real-time pulse signal of 8 roads on the same time, which includes a 16-bit digital output channel and a 32-bit counter, could be used in the real-time control.

scholarly journals A closed-loop anesthetic delivery system for real-time control of burst suppression

2013 ◽  
Vol 10 (4) ◽  
pp. 046004 ◽  
Author(s):  
Max Y Liberman ◽  
ShiNung Ching ◽  
Jessica Chemali ◽  
Emery N Brown
Keyword(s):  
Real Time ◽  
Delivery System ◽  
Closed Loop ◽  
Burst Suppression ◽  
Real Time Control ◽  
Time Control

Promote the Ethernet Performance Based on Inline Assemble

2014 ◽  
Vol 926-930 ◽  
pp. 2690-2693
Author(s):  
Yao Cheng
Keyword(s):  
Control System ◽  
Real Time ◽  
Performance Improvement ◽  
Low Cost ◽  
Engineering Application ◽  
Real Time Control ◽  
Time Control ◽  
The Right ◽  
Ethernet Interface ◽  
Modern Industry

Ethernet has been broadly used in modern industry for its exoteric standard, flexibility and low cost. Ethernet is becoming the right choice for many engineering application. However, issues of performance must be considered when we apply it to timing sensitive field such as real time control system and so on. An Ethernet interface solution implemented based on s3c2410a and ax88796 was described in this article, and in order to improve the performance, inline assemble was introduced into this study. The effect of performance improvement through inline assemble was checked by ping experiments. It was proved that inline assemble can improve the performance of Ethernet interface distinctly.

PCCHUA — A LABORATORY SETUP FOR REAL-TIME CONTROL AND SYNCHRONIZATION OF CHAOTIC OSCILLATIONS

2005 ◽  
Vol 15 (08) ◽  
pp. 2349-2360 ◽  
Author(s):  
LEONARDO A. B. TÔRRES ◽  
LUIS ANTONIO AGUIRRE
Keyword(s):  
Real Time ◽  
Low Cost ◽  
Real Time Control ◽  
Time Restrictions ◽  
Laboratory Setup ◽  
Time Control ◽  
Variable Control ◽  
Control Schemes ◽  
Control And Synchronization ◽  
Chua Oscillator

This paper describes a laboratory setup suitable for implementing low cost real-time solutions in the fields of control, synchronization and information transmission based on chaotic oscillators. The setup has the following features: (a) it is composed of a Chua oscillator furnished with three actuators thus permitting mono- and multi-variable control; (b) the actuators can be driven by the analog outputs of a standard I/O-board; in order to be able to actuate fast enough (c) the I/O-board is driven by a real time program written for Linux and (d) an inductorless implementation of Chua's circuit permits to slow down the original dynamics to just a few hertz. This enables implementing sophisticated control schemes without severe time restrictions. The paper concludes with a sample of experiments performed using the new setup.

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