Linear electro-mechanical actuators are finding increased use in the field of thrust vectoring of launch vehicles. Earlier, linear electro-hydraulic actuators were used especially in the lower stages of the launch vehicles where there is a requirement for large actuation forces. However, electro-mechanical actuators are being scrutinized for this purpose in an effort to provide lighter, cleaner...

For (possibly unstable) ODE systems with actuator delay, predictor-based infinite-dimensional feedback can compensate for actuator delay of arbitrary length and achieve stabilization.We extend this concept to another class of PDE-ODE cascades, where the infinite-dimensional part of the plant is of diffusive, rather than convective type. We derive predictor-like feedback laws and observers, with...

In the application of adaptive flight control, significant issues arise due to limitations in the plant inputs, such as: actuator displacement limits, actuator rate limits, linear input dynamics, and time delay. A method is introduced that allows an adaptive law to be designed for the system without these input characteristics, and then to be applied to the system with these characteristics, wi...

Experiments are performed using dry and humid air to ascertain the effect of humidity on the performance of a plasma actuator in flight conditions. These actuators are becoming popular in controlling flow about low to moderate speed aerospace vehicles. These experiments are performed at a new Test Facility of the Computational Plasma Dynamics Laboratory (CPDL) in Kettering University. A blow-do...

Incorporate learning mechanisms into electromechanical drives permits design systems with self-learning capabilities and produces more autonomous processes with some “intelligence” degree. This paper presents a control system that uses a fuzzy learning methodology to design an inverse-model compensation controller. The controller shows generalisation and learning capabilities to compensate non-...

The robot manipulator joint actuator dynamics and the payload variation are major factors that severely affect the overall dynamics and hence the tracking performance of the direct drives manipulator. This paper proposes a robust and computationally simple approach aimed at compensating the tracking error due to model uncertainty, actuator dynamics, and payload variation for the inverse dynamic...

The aerodynamic parameters of ducted fan micro aerial vehicles (MAVs) are difficult and expensive to precisely measure and are, therefore, not available in most cases. Furthermore, the actuator dynamics with risks of potentially destabilizing the overall system are important but often neglected consideration factors in the control system design of ducted fan MAVs. This paper presents a near-hov...