Compensation of Nonlinear Transmission Effects in Electro-Mechanical Flight Control Systems

Scherer, S.; Speckmaier, Moritz; Gierszewski, Daniel; Steinert, Agnes; Holzapfel, Florian

doi:10.2514/6.2022-0621

Cited by 2 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the TrajGen module presented in this work can be activated only when the aircraft is already in motion. The takeoff and initial acceleration, and landing can be performed by another module such as the one presented in [36,37]. For the results shown in Figure 29, the trajectory was initialized with a nonzero speed.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Online Deterministic 3D Trajectory Generation for Electric Vertical Take-Off and Landing Aircraft

Mbikayi,

Steinert,

Heimsch

et al. 2024

Aerospace

View full text Add to dashboard Cite

The use of non-piloted eVTOL aircraft in non-segregated airspace requires reliable and deterministic automatic flight guidance systems for the aircraft to remain predictable to all the users of the airspace and maintain a high level of safety. In this paper we present a 3D trajectory generation module based on clothoid transition segments in the horizontal plane and high order polynomial transition segments in the vertical plane. The expressions of the coefficients of the polynomial are derived offline are used to generate the trajectory online, making the system capable of running in real time without requiring enormous computational power. For the horizontal plane, we focus on the flyby transition, and therefore present a thorough analysis of the flyby geometry and the limitations linked to this geometry and the construct of three-segment trajectory generation around a fixed turn rate. We present feasible solutions for these limitations, and show simulation results for the combined horizontal and vertical plane concepts, allowing the system to generate complex 3D trajectories.

show abstract

Section: Resultsmentioning

confidence: 99%

“…where the arc length s cl (0, τ cl ) = A • τ cl calculated in Equation (28) was inserted. Solving Equation (36) for the running parameter τ cl , allows us to express it as a function of the shaping parameter A and the physical transition time t cl during which we need to fly a clothoid segment.…”

mentioning

confidence: 99%

Online Deterministic 3D Trajectory Generation for Electric Vertical Take-Off and Landing Aircraft

Mbikayi,

Steinert,

Heimsch

et al. 2024

Aerospace

View full text Add to dashboard Cite

show abstract

Advancements in the Theory and Practice of Flight Vehicle System Identification

Hosseini

Steinert

Hofmann

et al. 2023

Journal of Aircraft

View full text Add to dashboard Cite

System identification methods have played an essential role in the research and industry projects at the Institute of Flight System Dynamics of the Technical University of Munich. Besides the application of the established system identification approaches to multiple aircraft, novel methods have been developed at the institute to deal with the challenges associated with fixed- and rotary-wing aircraft system identification in the time and frequency domains. This paper provides an overview of these new developments, as well as practical application examples from the past and ongoing projects at the institute. After a brief introduction to the work at the institute, the paper describes the new advancements in the fields of time domain system identification and optimal input design by introducing optimal control methods. It continues with an alternative problem formulation for applying frequency domain system identification and parameter estimation methods to a novel flight control design and tuning approach. Additional topics from the past and ongoing research at the institute such as novel methods and practical findings in rotorcraft system identification and flight path reconstruction for different applications will be discussed and referenced.

show abstract

Compensation of Nonlinear Transmission Effects in Electro-Mechanical Flight Control Systems

Cited by 2 publications

References 21 publications

Online Deterministic 3D Trajectory Generation for Electric Vertical Take-Off and Landing Aircraft

Online Deterministic 3D Trajectory Generation for Electric Vertical Take-Off and Landing Aircraft

Advancements in the Theory and Practice of Flight Vehicle System Identification

Contact Info

Product

Resources

About