发明名称 |
FRAME SEQUENCE FOR A CELL VOLTAGE MEASUREMENT SYSTEM WITH A LOW PROBABILITY OF NATURAL OCCURRENCE |
摘要 |
A method for providing calibration and synchronization pulses in a pulse width modulation (PWM) signal including cell voltage measurement pulses, where the calibration pulses are four calibration pulses having a pattern of a narrow width high voltage pulse followed by a wide width low voltage pulse followed by a narrow width high voltage pulse followed by a wide width low voltage pulse that has a very low probability of occurring in a practical fuel cell system. The method modulates a combined sequence of the voltage measurement signals and the calibration pulses using an inverted saw tooth wave to provide the PWM signal, where a width of the pulses representing the voltage signals are proportional to a width of the pulses representing the calibration pulses.
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申请公布号 |
US2013002232(A1) |
申请公布日期 |
2013.01.03 |
申请号 |
US201113171147 |
申请日期 |
2011.06.28 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS LLC;REED DAVID J.;KAYE KENNETH L.;LEBZELTER DEREK R.;SAMPSON KEVIN |
发明人 |
REED DAVID J.;KAYE KENNETH L.;LEBZELTER DEREK R.;SAMPSON KEVIN |
分类号 |
G01R19/00 |
主分类号 |
G01R19/00 |
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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