发明名称 System and method for estimating electrical current in motor control circuits to improve performance and diagnostic capability
摘要 An error condition detection circuit coupled to the motor control circuit reports an error condition when actual motor operation deviates from predetermined desired motor operation. An overcurrent threshold comparator compares motor current with a threshold data value stored in a data storage register, and sets an overcurrent flag when the motor current exceeds the threshold. A current interrogation processor monitors the reported error condition and is programmed to respond to the error condition by iteratively reading the overcurrent flag and decrementing the overcurrent threshold data value by a predetermined decrement amount until the overcurrent flag becomes set. The current interrogation processor is further programmed to report the overcurrent threshold data value extant at the time the flag becomes set as an estimate of electric current.
申请公布号 US8587246(B2) 申请公布日期 2013.11.19
申请号 US201213448826 申请日期 2012.04.17
申请人 PLOUCHA JOSEPH E;BAUERLE PAUL A.;GM GLOBAL TECHNOLOGY OPERATIONS LLC 发明人 PLOUCHA JOSEPH E;BAUERLE PAUL A.
分类号 G05B23/02 主分类号 G05B23/02
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