Method and device for braking an assembly comprising a two-phase

Details Method and device for braking an assembly comprising a two-phase Method and device for braking an assembly comprising a two-phase

1984-04-03

1985-06-04

Smith, Jr., David

Electricity: motive power systems

Open-loop stepping motor control systems

318138, 318254, 318722, H02P 800

Patent

active

045217238

ABSTRACT:
A method is disclosed for braking a two-phase synchronous electric motor of the magnetized rotor type, driving a mechanical device. By this method the current supplied to the electric motor is controlled as a function of the actual position and the actual angular speed of the rotor within the braking period on the basis of information derived from the motor itself without additional detector devices. Perfectly proportioned braking is achieved taking into account individual motor and load characteristics and their possible variation, for example with temperature.

REFERENCES:
patent: 4238717 (1980-12-01), Knight et al.
patent: 4242624 (1980-12-01), Schalk et al.
patent: 4250435 (1981-02-01), Alley et al.
patent: 4449086 (1984-05-01), Hoffmann et al.

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