Title:
PITCHING CONTROL DEVICE FOR ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2011/155612
Kind Code:
A1
Abstract:
In order to suppress postural changes due to pitching movement occurring when a vehicle is braking, the disclosed pitching control device for an electric vehicle and can prevent deceleration discontinuity occurring at the moment when a vehicle stops by means of appropriate control of the vehicle braking force, can effectively control the pitching movement of the vehicle, and can increase stability and controllability and maintain riding comfort for passengers, even if there are substantial changes in travelling resistance due to road surface gradient, or substantial changes in vehicle weight due to an increase or decrease in drivers or load. The disclosed pitching control device for an electric vehicle implements control which suppresses postural changes in the electric vehicle which are generated by the pitching movements of said electric vehicle. When the electric vehicle is stopped, control is carried out such that a braking/driving torque command value outputted to a drive motor for driving the electric vehicle, is a torque which corresponds to travelling resistance, said torque being a value resulting from the power required to maintain a state wherein the electric vehicle is stopped on a road surface having gradient, being converted into the driving motor torque.
Inventors:
ICHINOSE Masanori (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
一野瀬 昌則 (〒34 茨城県ひたちなか市堀口８３２番地２ 株式会社日立製作所 機械研究所内 Ibaraki, 〒3120034, JP)
YASUDA Tomohiko (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
一野瀬 昌則 (〒34 茨城県ひたちなか市堀口８３２番地２ 株式会社日立製作所 機械研究所内 Ibaraki, 〒3120034, JP)
YASUDA Tomohiko (Tsuchiura Works, Intellectual Property Department, 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
Application Number:
JP2011/063411
Publication Date:
December 15, 2011
Filing Date:
June 10, 2011
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (5-1 Koraku 2-chome, Bunkyo-ku Tokyo, 63, 〒1128563, JP)
日立建機株式会社 (〒63 東京都文京区後楽二丁目５番１号 Tokyo, 〒1128563, JP)
ICHINOSE Masanori (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
一野瀬 昌則 (〒34 茨城県ひたちなか市堀口８３２番地２ 株式会社日立製作所 機械研究所内 Ibaraki, 〒3120034, JP)
日立建機株式会社 (〒63 東京都文京区後楽二丁目５番１号 Tokyo, 〒1128563, JP)
ICHINOSE Masanori (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
一野瀬 昌則 (〒34 茨城県ひたちなか市堀口８３２番地２ 株式会社日立製作所 機械研究所内 Ibaraki, 〒3120034, JP)
International Classes:
B60L15/20
Attorney, Agent or Firm:
KASUGA Yuzuru (Torii-nihonbashi Bldg, 4-1 Nihonbashi-honcho 3-chome, Chuo-k, Tokyo 23, 〒1030023, JP)
Claims: