公开(公告)号：US20210123212A1

公开(公告)日：2021-04-29

申请号：US17076282

申请日：2020-10-21

Applicant: KUBOTA CORPORATION

Inventor： Masahiro TOYAMA ,  Ryuki NISHIMOTO ,  Yuji FUKUDA ,  Kohei NAGAO ,  Ryota HAMAMOTO ,  Hiroaki NAKAGAWA

IPC: E02F9/22 ,  E02F9/20

Abstract: A working machine includes a hydraulic device, an operation valve to supply operation fluid to operate the hydraulic device and to vary the operation fluid to be supplied to the hydraulic device, an operation device having an operation member supported swingably, the operation device being configured to output an operation signal in accordance with an operation amount of the operation member, and a controller including a swing calculator to calculate an evaluation value representing a degree of swinging of the operation member, and a control signal generator to generate a control signal based on the evaluation value and the operation signal.

公开(公告)号：US20220341130A1

公开(公告)日：2022-10-27

申请号：US17861915

申请日：2022-07-11

Applicant: KUBOTA CORPORATION

Inventor： Masahiro TOYAMA ,  Yuji FUKUDA

IPC: E02F9/22 ,  E02F9/20

Abstract: A working machine comprises an operation member for operating a hydraulic device via a control valve. An oscillation calculator acquires a specific value corresponding to a feature representing oscillation of the operation member when the feature appears in variation of an control signal output according to an operation amount of the operation member within one of a sequence of predetermined periods, and calculates an evaluation value representing a degree of oscillation of the operation member by adding up the specific value or values obtained within one or more of the predetermined periods. A control signal generator generates a control signal for controlling the control valve based on the operation signal. The control signal generator decreases a value of the control signal per a unit value of the operation signal as the evaluation value gradually increases with the elapse of one or more of the sequence of the predetermined periods.