Electricity: motive power systems – Battery-fed motor systems
Patent
1981-11-04
1985-02-19
Truhe, J. V.
Electricity: motive power systems
Battery-fed motor systems
318317, 318342, 318345R, 318551, H02P 506
Patent
active
045008205
ABSTRACT:
A control apparatus for electric vehicles by using a chopper circuit which turns on or off a d-c drive motor responsive to the instruction of a microcomputer.
The control apparatus of the present invention is characterized by the provision of a protection device. The protection device comprises means for generating a predetermined signal, means for adding the predetermined signal to a signal which varies depending upon the stepped-in amount of the accelerator pedal, means for comparing the added signal with an output signal of a current detector which detects a current that flows into the d-c drive motor, and means which sets the microcomputer when the output signal of the current detector is greater than the added signal and which permits the microcomputer to start again its operation after a predetermined period of time has passed.
REFERENCES:
patent: 4090115 (1978-05-01), Franz, Jr.
patent: 4095153 (1978-06-01), Matty et al.
patent: 4151450 (1979-04-01), Fukuma et al.
patent: 4188569 (1980-02-01), Campbell
patent: 4216417 (1980-08-01), Anderson et al.
patent: 4282465 (1981-08-01), Acker et al.
patent: 4355342 (1982-10-01), Framzolini
patent: 4366420 (1982-12-01), Omae et al.
Naito Shotaro
Noto Yasuo
Ohmae Tsutomu
Hitachi , Ltd.
Ro Bentsu
Truhe J. V.
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