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2. 发明授权

US3858109A Brushless tachometer 失效
标题翻译：无刷测速仪
公开(公告)号：US3858109A
公开(公告)日：1974-12-31
申请号：US34439773
申请日：1973-03-23
申请人： SPERRY RAND CORP
发明人： LIDEN S
IPC分类号： G01P3/44 , H02P9/00
CPC分类号： G01P3/44
摘要： An alternating current variable permeance resolver is mechanically coupled to rotate in synchronism with a direct current brushless generator the rotor of which is rotated at a speed desired to be measured. The generator produces two alternating current voltages proportional, respectively, to the speed of rotation and to the sine and cosine of the instantaneous generator rotor position. These two ac voltages are modulated by an ac voltage the frequency of which is very high relative to the maximum design generator/resolver rotation speed and applied to the quadrature windings of the resolver which are therefore input windings. The voltage at the output winding of the resolver is therefore proportional to the speed components of the generator signal, the sine/cosine components cancelling. The resolver output signal is then demodulated at the same modulation frequency whereby to provide a dc output signal proportional to the rate of rotation of the generator rotor.
摘要翻译：交流可变磁导解析器被机械耦合以与直流无刷发电机同步旋转，直流无刷发电机的转子以希望测量的速度旋转。发电机分别产生两个交流电流，分别与转速和瞬时发电机转子位置的正弦和余弦成比例。这两个交流电压由交流电压调制，交流电压的频率相对于最大设计发电机/分解器转速非常高，并被施加到因此输入绕组的旋转变压器的正交绕组。因此，分解器的输出绕组上的电压与发生器信号的速度分量正弦/余弦分量取消成比例。然后解调器输出信号以相同的调制频率进行解调，从而提供与发电机转子的转速成比例的直流输出信号。

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