| 摘要 |
FIELD: electric engineering. SUBSTANCE: device has electric motor 1, frequency detector 10, which is connected to electric motor, integral angle and speed detector which input is connected to driving generator 20 and which output is connected to corresponding inputs of angular transducer 23 and speed converter 24. In addition device has reference voltage generator 20, two double-winding chokes 15, two opposite-polarity rectifiers 16 and 17, adder 19, two subtraction units 22, two adders 21 and integrator 25. Driving generator and integral detector have two phases. Reference voltage generator has two chokes 15 which primary windings 14 are connected to driving circuits of corresponding phases (windings 6 and 7) of integral detector. Each secondary winding 18 is connected to input of adder 19 through corresponding rectifier; output of adder 19 is connected to input of integrator 25, which output is connected to reference voltage inputs of angular transducer 23. Output windings 8 of integral detector are connected to input of angular transducer through adder 21; output windings 9 of integral detector are connected to speed transducer through subtraction unit 22. Integral detector is located at magnetic circuit of synchronous motor so that its output windings are located on perpendicular teeth, driving windings are located in slits which are located in motor stator on axes of said teeth. EFFECT: increased precision due to separation of angular and speed signals; this excludes static and dynamic errors in signal conversion circuits. 1 dwg |
