Positioning device with dual linear motor

Details Positioning device with dual linear motor Positioning device with dual linear motor

1987-10-16

1989-03-14

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

Plural servomotors

318 68, 318 85, 318632, 212131, H02P 546, B66C 1900

Patent

active

048127256

ABSTRACT:
A linear motor system includes first and second linear motors driving a load along spaced-apart supports. A positioning table, or a portion of a machine tool, supported between the first and second linear motors includes a device for varying the position of the table or portion along an axis extending between the first and second linear motors. A single motor control system produces a motor drive signal. A proportioning device proportions the portion of the motor drive signal fed to the two motors in a proportion controlled by the position of the table or portion.

REFERENCES:
patent: 3588660 (1971-06-01), Puikhiser
patent: 3644916 (1972-02-01), Gilbert
patent: 4087731 (1979-05-01), Rhoades
patent: 4362978 (1982-12-01), Pollard et al.
patent: 4499546 (1985-02-01), Kuga et al.
patent: 4587469 (1986-05-01), Ikebo et al.
patent: 4629955 (1986-12-01), French et al.
patent: 4656577 (1987-04-01), Herman
patent: 4667136 (1987-05-01), Bell
patent: 4714400 (1987-12-01), Barnett et al.

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