...Katarzyna Pobikrowska; Tomasz Goetzendorf-Grabowski Purpose This paper aims to investigate trajectory optimization and optimal control of an e-vertical take-off and landing (eVTOL) unmanned aerial vehicle ( UAV ) during the transition phase. The transition is a maneuver that guides the aircraft...

... can be transformed as the solution of the optimal control problem, and example emulations are carried out to validate the method. Findings For the case with a single fixed-magnitude impulse, simulation results show preliminarily that the method is in agreement with the method in Ref. (Wen et...

... energy management, it becomes optimal and can be referred to as optimal energy management. Dynamic programming Optimal control Flight performance Hybrid aircraft Optimal energy management SoC = state of charge (−); W = weight (N); m ̇ f...

... control System modelling Safety separation Optimal control Air safety Flight trajectory Separation From a system’s perspective, the key characteristic of the air traffic control is the trajectory uncertainty of flight. Conflict detection and resolution model for multiple aircraft has been...

... 09 2016 © Emerald Publishing Limited 2018 Emerald Publishing Limited Licensed re-use rights only Optimal control Formation control Decentralized control Guaranteed cost control Spacecraft formation Spacecraft formation is defined by Scharf et al. (2004...

...Julien Marzat Purpose This note aims to introduce a terminal guidance law that is able to compensate for evasive target maneuvers without estimating their acceleration. Design/methodology/approach The new guidance law is derived in the framework of linear-quadratic optimal control to ensure...

... of generating the guidance commands. Design/methodology/approach – An optimal control model for an atmospheric ascent guidance system is established directly; following that, the detailed process for necessary conditions of the optimal control problem is re-derived based on the calculus of variations...

... of an optimal control problem. Findings The relative motion model established directly in the relative coordinate frame has intuitive physical significance, and the optimal controller based on this relative motion model is capable of restraining the invariable or slowly varying perturbation brought...

.... For this reason, based on the optimal control and the geometry, each segment of trajectory is designed with respect to a local frame. The algorithm is implemented as a real‐time manner in terms of the down‐range variable. Findings The proposed algorithm tries to find not only a feasible trajectory...

... optimization techniques in literature, no‐information technique, in which a step response is used to search for optimal controller gains without any information about the mission. Genetic algorithms were used to search for the optimal controller gain in each case with different cost functions. Findings...

...S.H. Pourtakdoust; N. Rahbar; A.B. Novinzadeh Purpose To devise a new technique to synthesise optimal feedback control law for non‐linear dynamic systems through fuzzy logic. Design/methodology/approach The proposed methodology utilizes the open‐loop optimal control solutions (OCSs) of the non...

... of electrohydraulic servo actuators, as will be seen in the next section. © MCB UP Limited 1998 Actuators Antiwindup Computer‐aided Flight controls Optimal control Electrohydraulic servomechanisms/servo actuators are widely used in various areas of industrial practice and aerospace technique...