Control device with an integrating position drive

Details Control device with an integrating position drive Control device with an integrating position drive

1978-06-06

1980-07-01

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Antibacklash systems

318621, G05B 1101

Patent

active

042108535

ABSTRACT:
In a control device which includes an integrating positioning drive comprising a motor and transmission with backlash and lag, the backlash being the hysteresis of the transmission of mechanical quantities which occurs when the direction of rotation changes and which is caused, for example, by gear tolerances in the transmission due to manufacturng constrains, in addition to a first feedback path which supplies a signal proportional to the position of a control member, there is also provided a second feedback path developing a signal dependent on the positioning rate and the magnitude of the lag in the motor and, the mechanical members of the positioning drive are designed in such a manner that the transmission lag which occurs is greater than the sum of the position changes of the control member during starting of the positioning member over the period from stand-still to reaching its nominal speed and the position change occuring during the lag after the positioning motor is deenergized, providing a control device which can be used in applications which require high positioning rate as well as extremely small positioning steps.

REFERENCES:
patent: 3072835 (1963-01-01), Maeda
patent: 3394294 (1968-01-01), Leroi et al.
patent: 3896361 (1975-07-01), Inaba et al.

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