Switching Rates to Save Resources in Distributed Computer Control Systems

• Tipo: Capítulo ou Parte de Livro
• Data: 2006

Autores

Mauro, M (Autor) Outra; Luis Almeida (Autor) Outra; Fuertes, JM (Autor) Outra

Livro

Título: Information Control Problems in Manufacturing 2006

Páginas: 111-116

ISBN: 9780080446547

Indexação

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-007-ZKS

DOI: 10.1016/b978-008044654-7/50153-9

Abstract (EN): Recent work has shown that switching on-line between controllers using different rates might be beneficial-for example, to cope with scheduling or network induced jitter. This chapter extends this approach to achieve a different purpose-that is, to reduce the resource utilization of a closed-loop controller, namely CPU and network bandwidth, while maintaining its control performance. The proposed approach, named dual-rate, uses two controllers tuned for two sampling rates, a higher nominal rate determined by the usual rules, and a substantially lower rate that is used whenever the system is operating close to stationarity. This approach is applied to a simulated steer-by-wire automotive application based on Truetime. It is shown that the dual-rate approach allows saving substantial CPU and network bandwidth while maintaining a control performance near the one achieved with the nominal controller alone. The released resources can be used to execute other tasks, transmit other messages or simply facilitate error recovery with temporal redundancy. © 2006 Copyright

Idioma: Inglês

Tipo (Avaliação Docente): Científica