Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Analog armature control
Reexamination Certificate
2006-05-16
2006-05-16
Leykin, Rita (Department: 2837)
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Analog armature control
C388S809000, C388S816000, C180S006200, C180S006500, C180S006240, C180S006280
Reexamination Certificate
active
07046917
ABSTRACT:
A device of a cart includes a control, a speed regulating potentiometer, a microprocessor, a digital-to-analogue converter, a motor controlling unit, and a switch; the control is angularly displaceable and near to handlebars of the cart; the potentiometer is connected to the control so as to output a voltage, which depends on displacement of the control; the microprocessor can produce digital signals according to the output voltage of the potentiometer; the converter is used for converting the digital signals into analogue voltage; the motor controlling unit is used for making a motor run at a variable-speed mode, at which mode the speed of the motor will depend on output voltage of the converter; immediately after the rider presses the switch, the microprocessor will ignore output voltage of the potentiometer, and start and continue giving a same digital signal to the converter so that the motor starts running at constant speed.
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Leykin Rita
Rosenberg , Klein & Lee
Sunpex Technology Co., Ltd.
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