Electro‐mechanical Actuators for General Aviation Fly‐by‐wire Aircraft

Gruszecki, Jan

doi:10.3846/16487788.2005.9635892

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…These signals are sent to flight computers (Fig 1). They calculate the desired positions of control surfaces and provide digital signals to actuators where discrete information is changed to control surface movement [1]. This process is performed without direct mechanical connections between the control lever and control surfaces.…”

Section: Introductionmentioning

confidence: 99%

The Detection of Pilot‐induced Oscillations

Rzucidło

2007

Aviation

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Fly‐by‐wire systems enable superior control of chosen flight parameters. A pilot can modify stabilized parameters by adequate movement of control inceptors such as a side‐stick or trust lever. Fly‐by‐wire control reduces the load on a pilot and allows a pilot to focus on the main tasks. Unfortunately, the use of more complicated interfaces between human and machine can cause incorrect pilot behavior and in many cases lead to erroneous interactions between the operator and effective aircraft dynamics. The structure of control laws and dynamics of electromechanical actuators are especially important factors. They can influence unfavorable aircraft‐pilot coupling and can lead to pilot‐induced oscillations (PIO) in certain cases. The automatic detection of PIOs is presented in this paper. The practical realization of a PIO‐detector and examples of diagnostics of human‐machine systems are reported on in this article.

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Section: Introductionmentioning

confidence: 99%

The Detection of Pilot‐induced Oscillations

Rzucidło

2007

Aviation

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“…Indirect control of aircraft improves flight safety and minimizes pilot load. The development of digital technology makes FBW systems more profitable and the next step seems to be using these systems in general aviation aircrafts [3,12,4]. Indirect control of aircraft improves flight safety and minimizes pilot load.…”

Section: Introductionmentioning

confidence: 99%

Controllers for Fault Tolerant Actuators

Dołęga

Rzucidło

2007

Aviation

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The Fly‐by‐Wire technology enables flexible shaping of both effective dynamics and handling qualities of aircraft. This solution extends aircraft possibilities and supports the pilot by use of high‐level control laws. Application of FBW for aircraft would make flying both safer, and more popular. On the other hand the FBW system must be highly reliable. Advanced indirect flight control technology requires the use of actuators characterized by fault tolerant architecture. It should enable improvement of reliability of the aircraft control system and safety of performed flights effectively. The Electromechanical Actuator (EMA) consists of the electric motor, gearbox and controller. The actuator controller should be made intrinsically reliable and should be insensitive to other equipment failure. The conception of fault tolerant control algorithms as well as practical realization of it has been presented in this work. Tests of reliability of the complete EMA unit have also been presented herein.

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Review on Motion and Load-Bearing Characteristics of the Planetary Roller Screw Mechanism

Liu

et al. 2022

Machines

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Studying the motion and load-bearing characteristics of the planetary roller screw mechanism is the basis for the structural design and performance optimisation of the mechanism. The mechanical structures and working principles of different kinds of planetary roller screw mechanisms are summarised. Published papers on kinematic, load-bearing and dynamic models of the planetary roller screw mechanism are reviewed. Based on the slip state in point contacts at the screw–roller and the nut–roller interfaces, the kinematic models are divided into three types. The finite element method and numerical theory are the two main methods used to develop the load-bearing models. Current dynamic models differ mainly concerning whether they take the rotation of the screw into consideration. In this work, each kind of model is presented in detail along with relevant literature. The main conclusions for each type of model are discussed, and an overview of the future evolution of motion and load-bearing characteristics of the planetary roller screw mechanism are given.

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Electro‐mechanical Actuators for General Aviation Fly‐by‐wire Aircraft

Cited by 4 publications

References 3 publications

The Detection of Pilot‐induced Oscillations

The Detection of Pilot‐induced Oscillations

Controllers for Fault Tolerant Actuators

Review on Motion and Load-Bearing Characteristics of the Planetary Roller Screw Mechanism

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