Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1999-08-25
2000-05-02
Masih, Karen
Electricity: motive power systems
Induction motor systems
Primary circuit control
318138, 318254, 318439, 318511, H02P 528
Patent
active
060576642
ABSTRACT:
A motor driving control apparatus comprises a current detecting section for detecting an output current from an inverter section; a current control section for outputting a voltage instruction to a PWM section from the detected current value, a current instruction from an external device, and from a positional signal of an encoder connected to a motor; and a PWM section for outputting a PWM signal to the inverter section according to a voltage instruction, and an encoder I/F section for receiving a positional signal for the encoder is provided in an external interface section, the current control section and PWM section are provided in an N potential control section connected to the external interface section, and the external interface section transmits the current instruction and the positional signal inputted into the encoder I/F section through serial communications via an insulating section.
REFERENCES:
patent: 5252902 (1993-10-01), Uehara et al.
patent: 5742143 (1998-04-01), Katagiri
patent: 5949663 (1999-09-01), Endo et al.
"Practical on Theory and Designing of AC servo system", H. Sugiyama et al, General Electron Publisher, May 8, 1990.
Ikawa Yasushi
Kawajiri Kiyonari
Duda Rina I.
Masih Karen
Mitsubishi Denki & Kabushiki Kaisha
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