公开(公告)号：US3684940A

公开(公告)日：1972-08-15

申请号：US3684940D

申请日：1970-04-09

Applicant: WARNER SWASEY CO

Inventor： LUTZ FRITZ NORMAN

IPC: G05D3/14 ,  H03F1/02 ,  H03F3/21 ,  G05B11/01

CPC classification number: G05D3/1427 ,  H03F1/0244 ,  H03F3/211

Abstract: A control system for a direct-current servo motor drive amplifier which changes the magnitude of the voltage supplied to the amplifier according to the magnitude of the input signal to the amplifier in order to reduce the power loss in the amplifier and thereby permit the use of lower rated components, for example, transistors. The amplifier input signal is supplied to a plurality of operational amplifiers in a level-detecting circuit that operates to selectively connect a plurality of voltage sources to supply the voltage requirements of the drive amplifier in accordance with the magnitude of the input signal. An embodiment of the voltage-switching circuit employing controlled rectifiers and an embodiment employing transistors are disclosed.

Abstract translation: 一种用于直流伺服电动机驱动放大器的控制系统，其根据输入信号的幅度将放大器的电压的幅度改变为放大器，以便减小放大器的功率损耗，从而允许使用 较低额定值的组件，例如晶体管。 放大器输入信号被提供给电平检测电路中的多个运算放大器，其操作以选择性地连接多个电压源，以根据输入信号的幅度来提供驱动放大器的电压要求。 公开了采用受控整流器的电压切换电路的实施例和采用晶体管的实施例。

公开(公告)号：US3604996A

公开(公告)日：1971-09-14

申请号：US3604996D

申请日：1968-09-26

Applicant: WARNER SWASEY CO

Inventor： LUTZ FRITZ NORMAN

IPC: H02M7/155 ,  H02M7/757 ,  H02P25/10 ,  H02P5/16

CPC classification number: H02P25/10 ,  H02M7/1557 ,  H02M7/757 ,  Y10S388/915 ,  Y10S388/916 ,  Y10S388/917

Abstract: Controlled power supply system for connection to an AC source and having two oppositely connected silicon controlled rectifiers (SCRs) for conducting current in opposite directions to an electrical load. Two sawtooth waves of opposite slope and phasedisplaced by 180* are combined with an error signal to determine the firing times of the SCRs. The error signal represents the difference between a desired value and the actual value of a load variable, such as rotational speed when the load is an electric motor. Each sawtooth wave has a period equal to the AC source signal and during each cycle has a straight line slope for 270*, is abruptly reset to a reference level, and remains at the reference level for the remaining 90* of the cycle.

公开(公告)号：US3536972A

公开(公告)日：1970-10-27

申请号：US3536972D

申请日：1968-12-09

Applicant: WARNER SWASEY CO

Inventor： LUTZ FRITZ NORMAN ,  WALL CHARLES A

IPC: G01P3/46 ,  G05D3/18 ,  H02P7/292 ,  H02P25/10 ,  H02P29/00 ,  H02P5/16

CPC classification number: G05D3/18 ,  H02P7/293 ,  H02P25/10 ,  Y10S388/901 ,  Y10S388/917 ,  Y10S388/921