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:
May. 16, 2023
Filed:
Sep. 28, 2018
Tadano Ltd., Kagawa, JP;
Shinsuke Kanda, Kagawa, JP;
Kazuma Mizuki, Kagawa, JP;
TADANO LTD., Kagawa, JP;
Abstract
The resonant frequency ωx(n) of horizontal shaking of a suspended load W suspended from the distal end of a telescopic boom 9 via wire ropesis calculated on the basis of the suspension length Lm(n)·Ls(n) of the wire ropes; the characteristic frequency ωy(n) in the raising and lowering direction of the telescopic boomis calculated; and, in accordance with an operation for raising and lowering the telescopic boomthe filtering control signal Cd(n) of an actuator is generated in which a frequency component in a discretionary frequency range is attenuated at a discretionary ratio with reference to the resonant frequency ωx(n) of the suspended load W, and in which a frequency component in a discretionary frequency range is attenuated at a discretionary ratio with reference to the characteristic frequency ωy(n) in the raising and lowering direction of the telescopic boom