Invention Grant
US5220264A Control system for an AC servomotor having a permanent magnet type
失效
具有永久磁铁型的交流伺服电机的控制系统
- Patent Title: Control system for an AC servomotor having a permanent magnet type
- Patent Title (中): 具有永久磁铁型的交流伺服电机的控制系统
-
Application No.: US740895Application Date: 1991-08-06
-
Publication No.: US5220264APublication Date: 1993-06-15
- Inventor: Eiji Yamada
- Applicant: Eiji Yamada
- Applicant Address: JPX Aichi
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JPX Aichi
- Priority: JPX2-221270 19900824
- Main IPC: H02P6/06
- IPC: H02P6/06 ; H02M5/458 ; H02P27/04
Abstract:
In an AC servomotor control system consisting of an inverter for controlling a rotational speed and an output torque of an AC servomotor, a converter for controlling a DC voltage at a connecting point between an inverter and a converter, and a controller, the DC voltage is controlled at a constant voltage when the rotational speed is under a rated speed .omega..sub.b, and controlled as an increasing voltage in proportion to the rotational speed when it is over the rated speed .omega..sub.b so that the output torque of the servomotor is maintained at a constant torque.
Public/Granted literature
- US5980024A Ink jet print head and a method of driving ink therefrom Public/Granted day:1999-11-09
Information query
