Results 31 to 40 of about 28,299,233 (201)

A numerical evaluation of solvers for the periodic Riccati differential equation [PDF]

open access: yes, 2009
Efficient and accurate structure exploiting numerical methods for solving the periodic Riccati differential equation (PRDE) are addressed. Such methods are essential, for example, to design periodic feedback controllers for periodic control systems ...
Andras Varga   +14 more
core   +1 more source

The optimal solution of a non-convex state-dependent LQR problem and its applications. [PDF]

open access: yesPLoS ONE, 2014
This paper studies a Non-convex State-dependent Linear Quadratic Regulator (NSLQR) problem, in which the control penalty weighting matrix [Formula: see text] in the performance index is state-dependent.
Xudan Xu, J Jim Zhu, Ping Zhang
doaj   +1 more source

Pick matrix conditions for sign-definite solutions of the algebraic Riccati equation [PDF]

open access: yes, 2001
We study the existence of positive and negative semidefinite solutions of algebraic Riccati equations (ARE) corresponding to linear quadratic problems with an indefinite cost functional.
Trentelman, Harry L., Rapisarda, Paolo
core   +3 more sources

An approximating pseudospectral method with state‐dependent coefficient optimization for nonlinear optimal control problem

open access: yesIET Control Theory & Applications, 2023
The approximating sequence Riccati equation method is an efficient approach for solving the nonlinear optimal control problems, but its neglect of nonlinear dynamics and necessary optimality condition makes the control law difficult to satisfy the ...
Jianfeng Sun, Xuesong Chen
doaj   +1 more source

Control Of Pendulum On A Cart With State Dependent Riccati Equations

open access: yes, 2008
{"references": ["Michael Athans, \"The Role and Use of the Stochastic Linear-Quadratic-Gaussian Problem in Control System Design,\" in Plastics, IEEE Transactions on Automatic Control, Vol. AC-16, No. 6, December 1971, pp.\n529-552.", "Brian D. O. Anderson and John B. Moore, Optimal Control: Linear\nQuadratic Methods. New Delhi: Prentice Hall of India,
N. M. Singh   +2 more
openaire   +1 more source

Aeroelastic dynamic response and control of an airfoil section with control surface nonlinearities [PDF]

open access: yes, 2010
Nonlinearities in aircraft mechanisms are inevitable, especially in the control system. It is necessary to investigate the effects of them on the dynamic response and control performance of aeroelastic system.
Shijun Guo   +5 more
core   +1 more source

Experimental implementation of state-dependent Riccati equation control on quadrotors

open access: yesDrone Systems and Applications
Multirotor unmanned aerial vehicles are well-known and reliable platforms for flight in indoor and outdoor environments. They perform stable flights; standard autopilots have been developed with safety features based on laws and regulations.
Saeed Rafee Nekoo, Anibal Ollero
doaj   +1 more source

Control of nonlinear state-dependent systems using a receding horizon strategy

open access: yesAdvances in Mechanical Engineering, 2016
A variety of nonlinear control design methods have been proposed for controlling severe nonlinear processes over the past three decades. The vast majority of approaches take a nonlinear affine representation of the system dynamics.
Jiqiang Wang
doaj   +1 more source

Balancing a Legged Robot Using State-Dependent Riccati Equation Control [PDF]

open access: yesIFAC Proceedings Volumes, 2014
Abstract In this paper, we propose a nonlinear control approach for balancing underactuated legged robots. For the balancing task, the robot is modeled as a generalized version of a Segway. The control design is based on the State-Dependent Riccati Equation (SDRE) approach.
E. Najafi, G.A.D. Lopes, R. Babuška
openaire   +1 more source

A State‐Adaptive Koopman Control Framework for Real‐Time Deformable Tool Manipulation in Robotic Environmental Swabbing

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a state‐adaptive Koopman linear quadratic regulator framework for real‐time manipulation of a deformable swab tool in robotic environmental sampling. By combining Koopman linearization, tactile sensing, and centroid‐based force regulation, the system maintains stable contact forces and high coverage across flat and inclined surfaces.
Siavash Mahmoudi   +2 more
wiley   +1 more source

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