Hydraulic Control

The RMC family of motion controllers excels at hydraulic motion control. The RMC includes many features for controlling hydraulic cylinders:

Directional Gain Ratio

Single-rod hydraulic cylinders require different gains when going moving in each direction. The RMC has Velocity Feed-Forward gains for each direction. The rest of the tuning gains are scaled according to the ratio of the feed-forward gains to compensate for the asymmetrical cylinder.

Deadband Compensation

Some hydraulic valves have overlapped spools which create a dead zone or deadband where no oil flows even though a control signal is applied to the valve. The RMC includes parameters to compensate for the Deadband. Though this compensation can improve performance significantly, Delta does not recommend using valves with overlapped spools – in particular for high performance applications or for pressure control.

Position-Pressure/Force Control

Hydraulic cylinders are ideal for applications where large forces must be applied to a load, and the RMC includes control modes and parameters specifically for these types of applications.

Active Damping and Acceleration Control

Active Damping uses Acceleration or force feedback to increase the stability of systems with heavy loads relative to the cylinder diameter. This can increase the performance of a hydraulic system without significant increases in cost from increasing the size of the cylinder, valve and power unit.

Specialized Commands

The RMC has several commands that allow you to obtain the highest performance possible from your hydraulic system or control difficult applications by combining Open Loop and Closed Loop control in a single move. See the Quick Move command.