ELECTRIC VARIABLE PITCH ACTUATOR DEVICE AND METHOD OF CONTROLLING ELECTRIC VARIABLE PITCH ACTUATOR DEVICE

Title:

ELECTRIC VARIABLE PITCH ACTUATOR DEVICE AND METHOD OF CONTROLLING ELECTRIC VARIABLE PITCH ACTUATOR DEVICE

Document Type and Number:

WIPO Patent Application WO/2021/140804

Kind Code:

A1

Abstract:

An electric variable pitch actuator device comprises: an actuator system that generates a propeller rotation shaft drive motor speed signal and an actuator system generation signal that drives an aircraft from a low-pass filter generation signal and a band pass filter generation signal which are generated by a control command duplexer from an actuator system control input signal and a duplexer cutoff frequency determination value signal; and a control command duplexer cutoff frequency selector that generates the duplexer cutoff frequency determination value signal from the propeller rotation shaft drive motor speed signal. The control command duplexer cutoff frequency selector generates the duplexer cutoff frequency determination value signal from a relationship between the propeller rotation shaft drive motor speed signal, a magnitude of aerodynamic noise produced by a propeller of the actuator system, and a magnitude of the actuator system generation signal.

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Inventors:

YAMASHITA TOSHIAKI (JP)
ADACHI HIDEO (JP)
MIZUMOTO HISASHI (JP)

Application Number:

PCT/JP2020/045446

Publication Date:

July 15, 2021

Filing Date:

December 07, 2020

Export Citation:

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Assignee:

NEC CORP (JP)

International Classes:

B64C11/44

Foreign References:

JP2007532370A	2007-11-15
US20170210461A1	2017-07-27
US20020117579A1	2002-08-29
CN110341973A	2019-10-18