A Design Procedure for Robust Actuator and Sensor Fault Detection
7th International Conference on Control, Decision and Information Technologies, CoDIT 2020
This paper considers the design of an integrated observer structure termed as Proportional Integral Fading Unknown Input Observer (PIFUIO). The advantages of PIO and UIO observers are used in robust fault detection. The UIO decouples the unknown input disturbance while PIO allows to estimates the faults. It is shown that the fading term of this observer plays a distinct role in reliable estimation of faults decoupled from the unknown disturbance or vice versa. The robust detection of sensor fault is also considered with the presence of unknown inputs. Indirect and direct design procedures for sensor fault detection are provided. Numerical examples are included to illustrate the advantage of PIFUIO.
Moradmand, Anahita; Shafai, Bahram; and Saif, Mehrdad. (2020). A Design Procedure for Robust Actuator and Sensor Fault Detection. 7th International Conference on Control, Decision and Information Technologies, CoDIT 2020, 709-714.