Method of PWM regulation of a continuous current electric motor

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United States of America Patent

PATENT NO 9294030
APP PUB NO 20140217949A1
SERIAL NO

14168171

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Abstract

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A method of PWM regulating a motor through a half-bridge drive stage includes sampling the motor current to obtain sampled values during driving intervals or during current decay intervals, and comparing a last sampled value with a current threshold. The motor is coupled in a slow decay electrical path for the duration of a current decay interval if the last sampled value does not exceed the current threshold. Otherwise the motor is coupled in a fast decay electrical path for a portion of the duration of the current decay interval, and is coupled in the slow decay electrical path for a remaining part of the duration of the same current decay interval.

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Patent Owner(s)

  • STMICROELECTRONICS S.R.L.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boscolo, Michele Berto Sesto San Giovanni, IT 5 15
Galbiati, Ezio Agnadello Cremona, IT 52 349
Magni, Federico Settimo Milanese, IT 3 6
Maiocchi, Giuseppe Capiago Intimiano, IT 27 272
Pascale, Paolo Rho, IT 4 6

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