TY - JOUR
T1 - Description of execution time dynamics for a set of concurrent real-time tasks
AU - López, Pedro Guevara
AU - Juárez, José de Jesús Medel
AU - Reyes, Gustavo Delgado
PY - 2011
Y1 - 2011
N2 - A Real-time System (RTS) implemented in a digital computer interacts with the physical world through knowledge variables (sensors, actuators, Analogical-Digital, and Digital-Analogical convertors) processing its requirements through real-time tasks (J i: i∈Z +). Each J i is formed by a set of instances {j i,k: i,k∈Z +, i is the task index, k is the instance index} with at least three time constraints: arrival, execution and, interval times (L i,k, C i,k, D i,k). The execution time identification Ĉi,k, is based on Instrumental Variable parameter estimation and the recursive state space ARMA model. The execution times were measured experimentally using a Real-time Operative System QNX 6.5 Neutrino in an Intel Core i7 processor with a speed of 2.66 GHz. This paper presents a state of the art real-time task model, execution time measurements, an Instrumental Variable parameter estimator on recursive state space identification, experimentation and, results.
AB - A Real-time System (RTS) implemented in a digital computer interacts with the physical world through knowledge variables (sensors, actuators, Analogical-Digital, and Digital-Analogical convertors) processing its requirements through real-time tasks (J i: i∈Z +). Each J i is formed by a set of instances {j i,k: i,k∈Z +, i is the task index, k is the instance index} with at least three time constraints: arrival, execution and, interval times (L i,k, C i,k, D i,k). The execution time identification Ĉi,k, is based on Instrumental Variable parameter estimation and the recursive state space ARMA model. The execution times were measured experimentally using a Real-time Operative System QNX 6.5 Neutrino in an Intel Core i7 processor with a speed of 2.66 GHz. This paper presents a state of the art real-time task model, execution time measurements, an Instrumental Variable parameter estimator on recursive state space identification, experimentation and, results.
KW - Computing time
KW - Error
KW - Estimation
KW - Identifier
KW - Instance
KW - Real-time
KW - Tasks
UR - http://www.scopus.com/inward/record.url?scp=84865350454&partnerID=8YFLogxK
M3 - Artículo
SN - 0120-6230
SP - 123
EP - 131
JO - Revista Facultad de Ingenieria
JF - Revista Facultad de Ingenieria
IS - 61
ER -