Laminar (Flow): A condition where the fluid particles move in continuous parallel paths, streamline flow.

Leverage: A gain in output force over input force by sacrificing the distance moved at the output. Mechanicaladvantage or force multiplication.

Lead Compensation Algorithm: A mathematical equation implemented by a computer to decrease the delay between the input and output.

Lift: The height a body or column of fluid is raised, for instance, from the reservoir to the pump inlet. Lift is sometimes used to express a vaccum. The opposite of head.

Line: A tube, pipe or hose which acts as a conductor of hydraulic fluid.

Limits: Properly designed motion control systems have sensors called limits that alert the control electronics that the physical end of travel is being approached and that motion should stop.

Logic Circuit: A digital circuit (also called gate) that has binary inputs and outputs and is capable of performing a decision making function.

Logic Ground: An electrical potential to which all control signals in a particular system are referenced.