title: Basic Send-on-Delta Sampling for Signal Tracking-Error Reduction.
abstract: This paper investigates the dynamic selection of an appropriate threshold for basic Send-on-Delta (SoD) sampling strategies, given an available transmission rate to reduce the signal tracking-error. The paper formulates the error-reduction principle and proposes an algorithm that calculates, in real time, the amplitude threshold value (also called delta value) for a desired mean transmission rate. The algorithm is implemented to be computed in a Send-on-Delta driver and is tested with three signals that match the step response of a second order control system. Comparison results with a conformant periodic transmission strategy reveals that it improves deeply the tracking-error while maintaining the desired average throughput.
authors.affiliation: School of Computer Engineering, Campus de Ourense, Edificio Politecnico, 32004 Ourense, Spain. mcacho@uvigo.es.
authors.forename: Miguel
authors.initials: M
authors.lastname: Diaz-Cacho
authors.affiliation: School of Industrial Engineering, Campus Lagoas-Marcosende, 36310 Vigo, Spain. emmad@uvigo.es.
authors.forename: Emma
authors.initials: E
authors.lastname: Delgado
authors.affiliation: School of Industrial Engineering, Campus Lagoas-Marcosende, 36310 Vigo, Spain. abarreiro@uvigo.es.
authors.forename: Antonio
authors.initials: A
authors.lastname: Barreiro
authors.affiliation: School of Industrial Engineering, Campus Lagoas-Marcosende, 36310 Vigo, Spain. pfalcon@uvigo.es.
authors.forename: Pablo
authors.initials: P
authors.lastname: Falcón
keywords: Send-on-Delta; deadband; networks; tracking error