Electricity: motive power systems – Positional servo systems
Patent
1998-10-07
2000-12-19
Ip, Paul
Electricity: motive power systems
Positional servo systems
318254, 400216, 395141, H02K 706
Patent
active
06163123&
ABSTRACT:
Rotary motion of a motor of an electric actuator is converted into rectilinear motion with a small sliding resistance by the aid of a ball screw and a feed nut. On the other hand, a control apparatus for controlling the electric actuator comprises memory groups composed of memories to indicate displacement positions of a displacement member. The memory groups include a starting point memory. If a controller selects the starting point memory, the control apparatus displaces the displacement member to a starting point position. Therefore, it is unnecessary to provide any dedicated signal line for displacing the displacement member to the starting point position. It is possible to decrease the number of signal lines connected to the control apparatus.
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Nagai Shigekazu
Nakamura Masayuki
Oguma Kazuyuki
Guss Paul A.
Ip Paul
SMC Kabushiki Kaisha
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