CAN Controller Area Network (ISO 11898), a serial bus using prioritized messages, grounded in automotive applications.
COTS Commercial Off-The-Shelf.
CSMA/CD Carrier Sense Multiple Access with Collision Detection, a medium access protocol for Ethernet (IEEE 802.3).
DBP Distance Based Priority, a dynamic priority assignment scheme where the priority of a task is the function of the distance to a failure state defined by the (m, k)-firm model.
DTTS Discrete Time Switched System.
EDF Earliest Deadline First, a scheduling policy which dynamically assign the highest priority to the task with the earliest deadline.
FDI Fault Detection and Isolation.
FIF Fault Isolation Filter.
FIFO First In, First Out.
FTC Fault Tolerant Control.
LFT Linear Fractional Transform.
LMI Linear Matrix Inequality.
LQ Linear Quadratic, a state feedback controller for linear systems minimizing a quadratic criterion involving the system’s state and control vectors.
LQG Linear Quadratic Gaussian, a LQ controller associated with a Kalman estimator when the state and measurements of the system are disturbed by additive white Gaussian noise.
LPV Linear Parameter Varying, methods to control linear, systems taking into account the variations of some parameters of the plant.
LTI related to Linear Time Invariant systems.
MIMO a dynamic system with Multiple Inputs, Multiple Outputs.
(m,k)-firm a scheduling policy enforcing the completion of at least m tasks execution (or message transmission) every k scheduling (or transmission) slots.
MPC Model Predictive Control, a feedback controller which predict and apply at each sample, a model-based control signal to a linear or non-linear process.
NCS Networked Control System, a control system where the sensors, controllers and actuators are distributed over a network.
NP-hard Non-deterministic Polynomial-time hard, a class of problems that are harder than those that can be solved by a non-deterministic Turing machine in polynomial time.
OS Operating System, the set of software utilities to interface a computer’s hardware and user space applications.
PN Petri Net, a place/transition graph describing a discrete events system.
PID Proportional-Integral-Derivative, a very popular controller for SISO systems.
QoC Quality of Control, a measure of performance for a controller.
QoS Quality of Service, a measure of performance for a networked system.
RTOS Real Time Operating System, an OS with some predictability for tasks’ execution time and memory space, thanks to a real-time scheduler.
RM Rate Monotonic, a scheduling policy which statically assign the highest priority to the the periodic task with shortest execution time.
SafeNecs Safe Networked Control Systems, is a joint academic research project funded by the “Agence Nationale de la Recherche” under grant ANR-05-SSIA-0015-03, from 2006 to 2009; it is devoted to research on fault tolerant control and diagnosis for networked control systems.
SISO a dynamic system with Single Input, Single Output.
TCHPN Timed Coloured Hierarchy Petri Net.
TDS Time-delay systems, systems whose state is a function taken over an interval including past values.
WCET Worst Case Execution Time.
WRR Weighted Round Robin, a scheduling policy where CPU (resp. bandwidth) is reserved for tasks (resp. data flows) according to their respective weight.
ZOH Zero-Order Hold, a mathematical model of a digital-to-analog converter holding a constant signal value for all the sample interval.