Title:
ELECTRIC VEHICLE, BRAKING PROGRAM, AND CONTROL METHOD AND CONTROL DEVICE OF ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2011/132335
Kind Code:
A1
Abstract:
Even if the coefficients of friction of the respective road surfaces on which the front wheels and the rear wheels travel are different, the disclosed electric vehicle can easily secure stable travelling characteristics under various road and travelling conditions by generating optimal braking/driving power between the tires and the road surface. The electric vehicle (1), which has two motors (3) that independently drive the front and back wheels (2) with a differential gear (4) therebetween, is provided with: a road surface friction coefficient (µ) estimation means that estimates a first and second coefficient of friction of the respective road surfaces that the front and back wheels are travelling over; a slip ratio upper limit setting means that sets a first and second predetermined value for the slip ratio of each front and back wheel in accordance with the first and second coefficients of friction; a slip ratio computation means that computes the slip ratio of each wheel; and a braking/driving power control means that controls the braking/driving power of the front wheel motor (3f) in a manner so that the higher slip ratio of the slip ratios of the left and right front wheels becomes the first predetermined value, or controls the braking/driving power of the rear wheel motor (3r) in a manner so that the higher slip ratio of the slip ratios of the left and right rear wheels becomes the second predetermined value.
Inventors:
MUTOH, Nobuyoshi (1-9-903, Chitose 1-chome Sumida-k, Tokyo 25, 〒1300025, JP)
武藤 信義 (〒25 東京都墨田区千歳１丁目１番９－９０３号 Tokyo, 〒1300025, JP)
KATO, Tadahiko (2418 Washizu,Kosai-sh, Shizuoka 94, 〒4310494, JP)
武藤 信義 (〒25 東京都墨田区千歳１丁目１番９－９０３号 Tokyo, 〒1300025, JP)
KATO, Tadahiko (2418 Washizu,Kosai-sh, Shizuoka 94, 〒4310494, JP)
Application Number:
JP2010/066857
Publication Date:
October 27, 2011
Filing Date:
September 28, 2010
Export Citation:
Assignee:
MUTOH, Nobuyoshi (1-9-903, Chitose 1-chome Sumida-k, Tokyo 25, 〒1300025, JP)
武藤 信義 (〒25 東京都墨田区千歳１丁目１番９－９０３号 Tokyo, 〒1300025, JP)
UNIVANCE CORPORATION (2418, Washizu Kosai-sh, Shizuoka 94, 〒4310494, JP)
株式会社ユニバンス (〒94 静岡県湖西市鷲津２４１８番地 Shizuoka, 〒4310494, JP)
武藤 信義 (〒25 東京都墨田区千歳１丁目１番９－９０３号 Tokyo, 〒1300025, JP)
UNIVANCE CORPORATION (2418, Washizu Kosai-sh, Shizuoka 94, 〒4310494, JP)
株式会社ユニバンス (〒94 静岡県湖西市鷲津２４１８番地 Shizuoka, 〒4310494, JP)
International Classes:
B60L15/20; B60T8/1755
Attorney, Agent or Firm:
HIRATA, Tadao (Hirata & Partners, World-Wide-Center1-13, Sanban-cho, Chiyoda-k, Tokyo 75, 〒1020075, JP)
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Claims: