Swing control device and construction machinery

Details Swing control device and construction machinery Swing control device and construction machinery

2011-08-16

2011-08-16

Tran, Dalena (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Construction or agricultural-type vehicle

C212S255000

Reexamination Certificate

active

08000862

ABSTRACT:
In a swing control device installed in an electric rotary excavator (a construction machine), when a leading edge or a trailing edge of a lever signal is sharp due to a quick operation of a swing lever, a gradient as a rise time Ta1or a fall time Tb1is provided to the leading edge or the trailing edge of the torque output and the acceleration that are output based on the lever signal so as to somewhat ease the edge. With the arrangement, an impact in acceleration or deceleration of a rotary body can be suppressed. Specifically, a gradient in the acceleration operation is provided such that the rise time Ta1becomes 0.15 seconds or more, while a gradient in the stop deceleration operation is provided such that the fall time Tb1becomes 0.1 seconds or more.

REFERENCES:
patent: 5835874 (1998-11-01), Hirata et al.
patent: 6732458 (2004-05-01), Kurenuma et al.
patent: 7067999 (2006-06-01), Sugano et al.
patent: 2001-10783 (2001-01-01), None
patent: 2001-11897 (2001-01-01), None
patent: 2004-169466 (2004-06-01), None
Notification Concerning Transmittal of International Preliminary Report on Patentability, Chapter I of the Patent Cooperation Treaty and Written Opinion of the International Searching Authority dated May 22, 2007, for PCT/JP2005/021012. 4 sheets.

Affiliated with

Also associated with

Rating

Swing control device and construction machinery does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Swing control device and construction machinery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swing control device and construction machinery will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2769908