发明名称 |
STEPPER MOTOR STALL DETECTION |
摘要 |
An apparatus (Fig. 2), system (Fig. 1), and method (Fig. 7) are disclosed for stepper motor 102 stall detection. A conversion module 106 receives 1206 a back electromotive force ("EMF") waveform 1002 produced in a non-driven coil of the stepper motor 102 by a magnetic field of a rotor of the stepper motor 102 during a full step operation 308, and samples 1208 the waveform 1002 at intervals starting at a predetermined time for a predetermined period of time within the full step operation 308 to yield a plurality of sampled data points. A rectification module 202 rectifies 1210 the waveform 1002 about a predetermined quiescent level 306. A comparison module 204 accumulates 1216 the rectified sampled data points into a statistically representative sampled value, compares the representative sampled value to a predetermined threshold level, and indicates 1224 a stall of the rotor. |
申请公布号 |
WO2011073742(A3) |
申请公布日期 |
2012.07.26 |
申请号 |
WO2010IB00316 |
申请日期 |
2010.01.17 |
申请人 |
GALIC, GORDAN;FIOLIC, GORAN |
发明人 |
GALIC, GORDAN;FIOLIC, GORAN |
分类号 |
H02P8/38 |
主分类号 |
H02P8/38 |
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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