Electricity: motive power systems – Braking – Plural – diverse or diversely controlled braking means
Patent
1994-10-14
1996-03-12
Ro, Bentsu
Electricity: motive power systems
Braking
Plural, diverse or diversely controlled braking means
318139, H02P 316
Patent
active
054989418
ABSTRACT:
A speed control device automatically controlling the travelling speed of overspeeding electric automobiles so as to allow the automobile to travel safely. The speed control device having a mechanical brake and motor including an input circuit for setting an electric brake request value associated with the RPM (revolution per minute) of the motor, a maximum speed value, an electric brake limit value and a maximum current value of the motor, an RPM sensing circuit for sensing a current RPM of the motor to generate an RPM sensing signal, a current sensing circuit for sensing a current flow in the motor to generate a current sensing signal, and a controller for comparing the input values supplied from the input circuit and the maximum current value with the RPM sensing signal and the current sensing signal to provide a motor driving transistor with a control signal, so that the speed control device performs an electric auxiliary brake function in addition to the mechanical brake function, thereby improving the endurance of the mechanical brake system.
REFERENCES:
patent: 3621929 (1971-11-01), Oberthur et al.
patent: 4225813 (1980-09-01), Sahasrabudhe
patent: 4600865 (1986-07-01), Caputo
patent: 4712054 (1987-12-01), Boldt
patent: 5304912 (1994-04-01), Kajiwara et al.
patent: 5340202 (1994-08-01), Day
Ro Bentsu
Samsung Heavy Industry Co. Ltd.
LandOfFree
Speed control device used for electric automobiles and method th does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Speed control device used for electric automobiles and method th, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speed control device used for electric automobiles and method th will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2102918