Transportfahrzeug und Transportarbeitssystem

Details

Veröffentlichungs-Nr.

EP4821778

Anmeldetag

21. Februar 2025

Veröffentlichung

2. Oktober 2025

Rechtsraum

EP

IPC

B60W40/068

Abstract

The object is to accurately grasp a road surface condition, such as the slipperiness of the road surface, from the state of a vehicle while traveling, and to obtain a traveling speed that achieves both safety and work efficiency of a hauling vehicle. A controller of the hauling vehicle includes: a µ calculation section that calculates a friction coefficient of a road surface based on a measurement result of a sensor; a ω calculation section that calculates a slip ratio of a wheel relative to the road surface based on the measurement result of the sensor; a parameter estimation section that estimates a parameter indicating a road surface condition; a maximum friction estimation section that estimates a maximum friction coefficient of the road surface; and a speed limit section that calculates an upper limit speed of the hauling vehicle according to the maximum friction coefficient and limits the target speed. The parameter estimation section estimates the parameter indicating the road surface condition in a linear area where a relationship between the friction coefficient and the slip ratio is linear. The maximum friction estimation section estimates the maximum friction coefficient based on the parameter in the linear area.

Anmelder

Firma

Hitachi Construction Machinery Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete