发明名称 |
Alternator equipped with improved interface means between an engine control apparatus and its regulator circuit, and a corresponding interface |
摘要 |
A motor vehicle alternator includes a regulator for varying excitation as a function of a reference variable, together with a conversion circuit for varying the reference variable (such as a voltage) according to a PWM signal. It includes, in combination: an internal clock with a controlled variable period; a difference circuit which produces a difference signal between the period of the PWM signal and that of a signal from the clock; a control circuit which governs the internal clock in response to the difference signal in such a way as to equalize the periods of the internal clock signal and the PWM signal; and a conversion circuit which comprises a counter paced by the clock and active while the PWM signal is at a given logic level, together with a D/A converter for converting the count from the counter into a voltage from which the regulator reference voltage is obtained.
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申请公布号 |
US2002047692(A1) |
申请公布日期 |
2002.04.25 |
申请号 |
US20010925980 |
申请日期 |
2001.08.10 |
申请人 |
PIERRET JEAN-MARIE;PENSEC DAMIEN |
发明人 |
PIERRET JEAN-MARIE;PENSEC DAMIEN |
分类号 |
H02P9/30;H03M1/82;(IPC1-7):H02H7/06;H02P9/00;H02P11/00 |
主分类号 |
H02P9/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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