Pulse width modulator with external feedback control

Details Pulse width modulator with external feedback control Pulse width modulator with external feedback control

G - Physics

05

D

G05D 3/12 (2006.01) B66F 3/46 (2006.01) B66F 7/20 (2006.01) F15B 11/22 (2006.01) F15B 21/08 (2006.01) G05D 3/18 (2006.01)

Patent

CA 2087770

ABSTRACT OF THE INVENTION An electronic device for synchronizing the movement of first and second hydraulic cylinders which includes: moving the first and second hydraulic cylinders by oil pressure; an electrovalve for varying the oil pressure to one of the hydraulic cylinders; first and second potentiometers associated with the first and second hydraulic cylinders respectively for producing a first and second voltage respectively in response to the movement of the first and second hydraulic cylinders; a pulse width module for sensing the difference between the first and second voltage and producing a pulse width modulated control signal to control the electrovalve to synchronize the movement of the first hydraulic cylinder relative to second hydraulic cylinder.

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