An intrinsic PID controller for mechanical systems on Lie groups

DHS Maithripala, JM Berg - Automatica, 2015 - Elsevier
This paper shows how “integral action” may be implemented intrinsically in the general
setting of fully-actuated mechanical systems on Lie groups. When combined with an intrinsic …

Integral control on Lie groups

Z Zhang, A Sarlette, Z Ling - Systems & Control Letters, 2015 - Elsevier
In this paper, we extend the popular integral control technique to systems evolving on Lie
groups. More explicitly, we provide an alternative definition of “integral action” for …

Almost-global tracking for a rigid body with internal rotors

A Nayak, RN Banavar, DHS Maithripala - European Journal of Control, 2018 - Elsevier
Inspired by recent work on a PID-like tracking control law for an interconnected mechanical
system on a Lie group, this article presents a novel tracking control law for such mechanical …

Implementation of an almost globally stable intrinsic nonlinear PID controller for attitude stabilization of a quadrotor

J Somasiri, KGB Gamagedara… - 2015 IEEE 10th …, 2015 - ieeexplore.ieee.org
This paper presents flight test results that demonstrate the effectiveness of a locally
exponential and almost-globally stable geometric PID controller for attitude stabilization. The …

Intrinsic optimal control for mechanical systems on lie group

C Liu, S Tang, J Guo - Advances in Mathematical Physics, 2017 - Wiley Online Library
The intrinsic infinite horizon optimal control problem of mechanical systems on Lie group is
investigated. The geometric optimal control problem is built on the intrinsic coordinate‐free …

Geometric pid control for almost-global stabilization of a quadrotor with parameter error and constant disturbances

DHS Maithripala, JM Berg - Dynamic systems …, 2014 - asmedigitalcollection.asme.org
Intrinsic controllers are invariant under the coordinates used for their representation. In the
case of rigid-body motion in two and three dimensions, the intrinsic approach eliminates …

Extended kalman filter based autonomous flying system for quadcopters

J Somasiri, DP Chandima… - 2018 2nd International …, 2018 - ieeexplore.ieee.org
This paper presents mathematical modeling, implementation and experimentation results of
Extended Kalman filter (EKF) implemented on existing flight control algorithm which is used …

Almost-global tracking of the unactuated joint in a pendubot

A Nayak, RN Banavar - IFAC-PapersOnLine, 2018 - Elsevier
Tracking the unactuated configuration variable in an underactuated system, in a global
sense, has not received much attention. Here we present a scheme to do so for a pendubot …

Integral control on nonlinear spaces: two extensions

Z Zhang, Z Ling, A Sarlette - IFAC-PapersOnLine, 2016 - Elsevier
This paper applies the recently developed framework for integral control on nonlinear
spaces to two non-standard cases. First, we show that perfect target stabilization in presence …

Output regulation for systems with symmetry

S De Marco - 2017 - amsdottorato.unibo.it
The problem of output regulation deals with asymptotic tracking/rejection of a prescribed
reference trajectory/disturbance. The main feature of the output regulation is that references …