Title:
AUTONOMOUS TRAVEL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/009164
Kind Code:
A1
Abstract:
This autonomous travel system includes: a reference vehicle speed setting unit that sets a reference vehicle speed for each of a first section and a second section, which is located further downstream in the travel direction than the first section, of a travel path; a work machine-side control unit that outputs a prescribed control signal when a work machine mounted on a travel vehicle enters a specific work state; a target vehicle speed setting unit that sets a target vehicle speed of the travel vehicle, which travels autonomously along the travel path; and a vehicle speed control unit that controls the vehicle speed of the travel vehicle such that the vehicle speed of the travel vehicle achieves the target vehicle speed set by the target vehicle speed setting unit. When a specified speed change reference position is reached on the travel path, the target vehicle speed setting unit can switch the target vehicle speed between the reference vehicle speed of the first section and the reference vehicle speed of the second section. When the prescribed control signal is output, the target vehicle speed setting unit calculates a specific target vehicle speed on the basis of the position of the travel vehicle with respect to the speed change reference position, and sets the specific target vehicle speed as the target vehicle speed.
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Inventors:
UEDA RYOHEI (JP)
Application Number:
PCT/JP2018/024456
Publication Date:
January 10, 2019
Filing Date:
June 27, 2018
Export Citation:
Assignee:
YANMAR CO LTD (JP)
International Classes:
G05D1/02; A01B63/10; A01B69/00
Foreign References:
JPH09222919A | 1997-08-26 | |||
JPH09178481A | 1997-07-11 | |||
US20140336818A1 | 2014-11-13 | |||
JP2016093125A | 2016-05-26 | |||
JPH03151801A | 1991-06-28 | |||
JP2016067244A | 2016-05-09 |
Attorney, Agent or Firm:
INAOKA, Kosaku (JP)
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