Options Add Functionality to Motion Controllers (.PDF Download)

The traditional closed-loop electro-hydraulic control system uses a motion controller that drives an actuator via a proportional servovalve, based on an input from a feedback sensor, for example, the position of a cylinder’s piston rod. Although maintaining a one-to-one relationship between sensor and actuator is fine for many applications, limitations to this traditional approach can negatively impact the productivity, reliability and operational cost of other types of machines...

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