Modular control architecture for real-time synchronous and asynchronous systems

1993 ◽  
Author(s):  
Philip L. Butler ◽  
Judson P. Jones
Keyword(s):  
Real Time ◽  
Control Architecture ◽  
Asynchronous Systems ◽  
Modular Control

Performance Evaluation of a Distributed Reconfigurable Controller Architecture for Robotic Applications

2005 ◽  
Author(s):  
Rodney Atta-Konadu ◽  
Sherman Y. T. Lang ◽  
Peter Orban ◽  
Chris Zhang
Keyword(s):  
Real Time ◽  
Service Discovery ◽  
Real Life ◽  
Performance Criteria ◽  
Control Architecture ◽  
Robotic Control ◽  
Modular Control ◽  
Network Delays ◽  
Performance Challenges ◽  
Performance Results

Recent research in controller architecture has had some focus on reconfigurability and associated concepts such as modularity and openness. These paradigms advocate non-proprietary components such as commercial off-the-shelves (COTS) with standard interconnection interfaces. The tradeoffs of such a controller architecture are performance challenges such as network-induced delays and synchronization problems, especially where non-real time entities such as Ethernet are involved. In our quest to address some of these challenges we have developed a modular control architecture for machine and robotic control as a test platform. The advantage of this architecture is cost-effectiveness and openness, achieved through the use of COTS components. Each machine axis is controlled by a real-time Java micro-controller and all the controllers communicate through a switched-Ethernet communication network. The architecture is designed to support reconfiguration of both hardware and software resources by the use of modularity and service-discovery protocols in the software and hardware design. Therefore devices such as axes and sensors may be reorganized, removed or added easily. Our research presents performance results and applications typical of industrial or real life for our control architecture. The performance criteria analyzed include network delays, synchronization resolutions and error analyses.

A Real Time Control Architecture for Continuously Managing Patients in a Care Unit

1995 ◽  
Vol 34 (05) ◽  
pp. 475-488
Author(s):  
B. Seroussi ◽  
J. F. Boisvieux ◽  
V. Morice
Keyword(s):  
Real Time ◽  
Linear Time ◽  
Treatment Plan ◽  
Control Architecture ◽  
Real Time Control ◽  
Time Representation ◽  
Time Control ◽  
Continuous Support ◽  
Definition Of ◽  
Computerized System

Abstract:The monitoring and treatment of patients in a care unit is a complex task in which even the most experienced clinicians can make errors. A hemato-oncology department in which patients undergo chemotherapy asked for a computerized system able to provide intelligent and continuous support in this task. One issue in building such a system is the definition of a control architecture able to manage, in real time, a treatment plan containing prescriptions and protocols in which temporal constraints are expressed in various ways, that is, which supervises the treatment, including controlling the timely execution of prescriptions and suggesting modifications to the plan according to the patient’s evolving condition. The system to solve these issues, called SEPIA, has to manage the dynamic, processes involved in patient care. Its role is to generate, in real time, commands for the patient’s care (execution of tests, administration of drugs) from a plan, and to monitor the patient’s state so that it may propose actions updating the plan. The necessity of an explicit time representation is shown. We propose using a linear time structure towards the past, with precise and absolute dates, open towards the future, and with imprecise and relative dates. Temporal relative scales are introduced to facilitate knowledge representation and access.

Real time command control architecture for an ITER relevant inspection robot in operation on Tore Supra

2009 ◽  
Vol 84 (2-6) ◽  
pp. 1015-1019 ◽  
Author(s):  
Delphine Keller ◽  
P. Bayetti ◽  
J. Bonnemason ◽  
V. Bruno ◽  
P. Chambaud ◽  
...  
Keyword(s):  
Real Time ◽  
Control Architecture ◽  
Inspection Robot

scholarly journals Haptic Interfacing for Virtual Prototyping of Mechanical CAD Designs

1997 ◽  
Author(s):  
John M. Hollerbach ◽  
Elaine Cohen ◽  
William Thompson ◽  
Rodney Freier ◽  
David Johnson ◽  
...  
Keyword(s):  
Real Time ◽  
Virtual Prototyping ◽  
Haptic Interface ◽  
Control Architecture ◽  
Real Time Control ◽  
Cad Modeling ◽  
Time Control ◽  
Smooth Transitions ◽  
New Algorithms ◽  
Surface Proximity

Abstract A network-based real-time control architecture has been developed which integrates a haptic interface (the Sarcos Dextrous Arm Master) with an advanced CAD modeling system (Utah’s Alpha_1). New algorithms have been developed and tested for surface proximity testing, fast updates to local closest point on a surface, and smooth transitions between surfaces. The combination of these new algorithms with the haptic interface and CAD modeling system permits a user to actively touch and manipulate virtual parts as well as passively view them on a CRT screen.

A Modular Control Architecture for a Small Electric Vehicle

2006 ◽  
Author(s):  
F. Santos ◽  
J. Trovao ◽  
A. Marques ◽  
P. Pedreiras ◽  
J. Ferreira ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Control Architecture ◽  
Modular Control

Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems – Real time simulation validation

2018 ◽  
Vol 229 ◽  
pp. 1111-1127 ◽  
Author(s):  
Sridhar Vavilapalli ◽  
S. Umashankar ◽  
P. Sanjeevikumar ◽  
Vigna K. Ramachandaramurthy ◽  
Lucian Mihet-Popa ◽  
...  
Keyword(s):  
Real Time ◽  
Large Scale ◽  
Control Architecture ◽  
Real Time Simulation ◽  
Pv Systems ◽  
Simulation Validation ◽  
Time Simulation
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