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:
Jan. 02, 2024
Filed:
Jul. 18, 2019
Tadano Ltd., Kagawa, JP;
Yoshimasa Minami, Kagawa, JP;
TADANO LTD., Kagawa, JP;
Abstract
A crane that controls an actuator on the basis of a target speed signal Vd of cargo W includes: a control device having a feedback control unit that calculates a target path signal Pdα of the cargo from the target speed signal Vd by integration to correct the target path signal Pdα on the basis of the differential of current position coordinates p(n) of the cargo W corresponding to the target path signal Pdα; and a feedforward control unit that adjusts a weight coefficient of a transfer function G(s) expressing the characteristics of the crane on the basis of a target path signal Pdα that has been corrected. The target path signal Pdα corrected by the feedback control unit is corrected using the transfer function G(s) for which the weight coefficient has been adjusted by the feedforward control unit.