The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2018
Filed:
Jan. 11, 2016
Safran Helicopter Engines, Bordes, FR;
Jean Philippe Jacques Marin, Jurancon, FR;
Matthieu Gallot, Ribarrouy, FR;
Philippe Etchepare, Pau, FR;
SAFRAN HELICOPTER ENGINES, Bordes, FR;
Abstract
The invention relates to a device for controlling an auxiliary engine () comprising a gas generator and a free turbine suitable for being able to be connected mechanically to the rotor () of a helicopter in order to supply it with thrust power, characterised in that said control device comprises a proportional-integral controller () having a proportional gain (Kp) and an integral gain (Ki), which are dependent on the rotation speed of said gas generator, said controller () being configured to receive an error signal representing a speed error of said free turbine, and to generate a signal (Sc) for correcting the drive speed of said gas generator obtained by adding a signal proportional to said error signal in accordance with said proportional gain (Kp), and an integrated signal (Si) resulting from the addition of a signal proportional to said error signal in accordance with said integral gain (Ki) and a memory signal (Sm), supplied by a feedback loop () of said integrated signal (Si), said memory signal (Sm) being dependent on a measurement representing the rotation speed of said free turbine.