Control for electric assist vehicle

Details Control for electric assist vehicle Control for electric assist vehicle

1994-07-21

1996-04-09

Hill, Mitchell J.

Motor vehicles

Special wheel base

Rider propulsion with additional source of power, e.g.,...

180207, 180220, B62M 2302

Patent

active

055052770

ABSTRACT:
An electrically power assisted, manually operated vehicle, such as a bicycle, that includes a force sensor for varying the amount of power assist by an electrical motor in response to the manual force input. In addition, a vehicle speed sensor is incorporated for sensing vehicle speed. An abnormality condition detector detects both the outputs from the force sensor and the vehicle speed sensor and indicates an abnormality and discontinues the supply of electrical power to the electric motor in the event of a discrepancy in the outputs of the sensors.

REFERENCES:
patent: 4364448 (1982-12-01), Ikuma
patent: 5024286 (1991-06-01), Lean et al.
patent: 5226501 (1993-07-01), Takata
patent: 5375676 (1994-12-01), Takata et al.
European Search Report dated Aug. 2, 1993.
Patent Abstract of Japan vol. 14, No. 113 (M-0944) 2 Mar. 1990 & JP-A-13 14 685 (Japan II M KK) 19 Dec. 1989.
Patent Abstract of Japan vol. 14, No. 262 (M-0981) 6 Jun. 1990 & JP-A-20 74 491 (Matsushita Electric Works Ltd).

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