Pilot-Induced Oscillation Analysis with Actuator Rate Limiting and Feedback Control Loop

Designing Stable ABR Flow Control with Rate Feedback and Open Loop Control: First-Order Control Case

In this paper we present a control-theoretic approach to design stable rate-based Bow control for ATM ABR services. The flow control algorithm that we consider has the most simple form among all the queuelength-based flow control algorithms, and is referred to as Farst-order Rate-based Flow Control (FRFC) since the corresponding closed loop can be modeled as a firstorder retarded differential e...

Pilot Variability During Pilot-Induced Oscillation

Pilot Induced Oscillations (PIO) are described as pilot-aircraft dynamic couplings which can lead to instability in an otherwise stable system. Previous and ongoing research has attempted to explain, predict, and avoid such oscillations. In contrast to other research, this effort backs away from pilot models and PIO avoidance and focuses on the characteristics of the pilot before, during, and a...

Multiple Control Effector Rate Limiting

The effect of the choice of control allocation scheme upon individual control effector rate demands is examined. Three previously reported and one new variation of control allocation schemes are described and compared. The new allocation scheme exploits the maximum attainable moment-rates of a given control effector configuration and is called moment rate allocation. The bases of comparison are...

Control of Systems with Actuator Amplitude and Rate Constraints

Model predictive control with amplitude and rate actuator saturation.

In this work we show that the anti-wind-up-bumpless-transfer controller emerges from the structure of model predictive control (MPC) with quadratic objective and input constrains. The key to establish that relationship is the application of optimality conditions to the equivalent optimal control problem. The proposed framework employs a model of physical constraints as part of the controller ar...