发明名称 |
Circuit arrangement for PLL speed control, with automatic setting of the operating point |
摘要 |
The invention relates to a circuit arrangement for PLL speed control, with automatic setting of the operating point, especially for electronically commutated motors in cassette drive mechanisms. The object of the invention is to find a circuit arrangement for PLL speed control in which the optimum operating point for the phase-difference signal is set automatically when running on no-load or basic load. This is achieved according to the invention in that the actual speed value is formed from the sum of the rectified generator voltage and a voltage which is proportional to phase difference, the static speed deviation in the locked state of the phase control loop is, furthermore, zero, and hence the e.m.f. supplied by a generator coupled to the motor, or the motor e.m.f. itself, is used as a reference voltage, making use of an analog memory. |
申请公布号 |
DE3244412(A1) |
申请公布日期 |
1983.06.23 |
申请号 |
DE19823244412 |
申请日期 |
1982.12.01 |
申请人 |
VEB ELEKTROMOTORENWERK HARTHA |
发明人 |
MOEBIUS,RICHARD,DIPL.-ING.;HOLFERT,CLAUS,DIPL.-ING.;ZAHN,DIETER;FISCHER,ROLAND,DIPL.-ING. |
分类号 |
H02P29/00;H02P23/00 |
主分类号 |
H02P29/00 |
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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