Abstract The research presented in this paper focuses on the development of a quasi-Linear Parameter Varying (qLPV) model for XV-15 tiltrotor aircraft. specific category qLPV modeling technique, known as stitching is employed to time-varying dynamics aircraft over entire flight envelope. In approach, discrete linear state-space models are interpolated through lookup tables function scheduling p...

In this paper an analysis of the complexity involved in the implementation and synthesis of linear parameter-varying (LPV) controllers is presented. Its purpose is to provide guidance in the selection of a synthesis approach for practical LPV control problems and reveal directions for further research with respect to complexity issues in LPV control. Standard methods are classified into polytop...

Abstract: In standard linear fractional representation (LFR)-based linear parameter-varying (LPV) modeling the size of the (diagonal) scheduling block depends on the number of scheduling parameters and their repetitions, which in turn influences both the complexity of synthesis conditions and the computational load during online implementation of LPV controllers. A modeling framework motivated ...

This paper presents a comparative study of three Linear Parameter Varying (LPV) modeling approaches and their application to the longitudinal motion of a Boeing 747 series 100/200. The three approaches used to obtain the quasi-LPV models are Jacobian linearisation, state transformation, and function substitution. Development of linear parameter varying models are a key step in applying LPV cont...

Proportional-integral-derivative (PID) controller is the most widely used in industry due to its simplicity and performance characteristics. However, a number of processes with time-variant or nonlinear characteristics are difficult to be handled with a conventional PID controller. To address this problem, an enhanced PID controller exhibiting improved performance than the conventional linear f...

This paper considers the identiiability of state space models for a system that is expressed as a linear fractional transformation (LFT): a constant matrix (containing identiied parameters) in feedback with a nite-dimensional, block-diagonal (\structured") linear operator. This model structure can represent linear time-invariant, linear parameter-varying, uncertain, and multidimensional systems...

Parameter-dependent control techniques are applied to a thrust vectored ducted fan engine. The synthesis technique is based on the solution of Linear Matrix Inequalities and produces a controller which achieves speci ed performance against the worst-case time variation of measurable parameters entering the plant in a linear fractional manner. Thus the plant can have widely varying dynamics over...