Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1992-06-09
1994-12-20
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361154, 361189, G05F 156
Patent
active
053750314
ABSTRACT:
In a vehicle electromagnetic clutch control device, a PWM modulator is provided in a microcomputer. In the microcomputer, a PWM modulation signal is calculated according to travel control data and engine control data and is then outputted. The PWM modulation signal is buffered by a digital signal buffer, the output of which is passed through a PWM smoothing filter to remove high frequency components of the signal. The output of the PWM smoothing filter is input to an analog buffer amplifier to output a substantially DC current instruction signal to a PWM comparator.
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Microprocessor systems handbook, D. P. Burton and A. S. Dexter, published by Analog Devices, 1977, pp. 140-141.
Gaffin Jeffrey A.
Mitsubishi Denki & Kabushiki Kaisha
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