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:
Aug. 19, 2014
Filed:
Jan. 11, 2011
Ryo Yamamoto, Kobe, JP;
Masahiro Yamada, Kobe, JP;
Yoji Yudate, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, JP;
Abstract
A drive controller of an operating machine configured to drive a structure by a hydraulic motor and an electric motor includes: a remote control valve configured to determine the operation amount of the structure; an electric motor torque calculation portion configured to calculate torque of the electric motor; a hydraulic motor torque calculation portion configured to calculate torque of the hydraulic motor; a controller configured to transmit an opening position control signal to the control valve based on the operation amount determined by the remote control valve such that torque necessary to drive the structure is obtained from the torque of the electric motor and the torque of the hydraulic motor; and solenoid-operated reducing valves and each configured to reduce a pilot pressure, to be applied to the control valve, based on the opening position control signal output from the controller.