Hydraulically powered power systems for controlling variable displacement hydraulic pumps and variable displacement hydraulic motors

A hydraulically powered power system, comprising:

• a variable displacement hydraulic motor configured to convert an input hydraulic flow to motor power;
• a compressor configured to receive the motor power to generate a pneumatic output;
• and control circuitry configured to:
• calculate a motor power adjustment based on a target pneumatic output of the compressor;
• and
• upon calculating the motor power adjustment, output a motor control signal to control the variable displacement hydraulic motor to modify a motor operating characteristic of the variable displacement hydraulic motor based on the motor power adjustment.

A hydraulically powered power system, comprising:

• a variable displacement hydraulic pump configured to receive input power from an engine or an electric motor and to convert the input power to an input hydraulic flow;
• a hydraulic motor configured to convert the input hydraulic flow to motor power;
• a generator drivingly coupled to the hydraulic motor and configured to receive the motor power to generate an electrical output;
• a generator sensor configured to measure a generator operating characteristic of the generator and to generate a sensor signal comprising a measured generator operating characteristic associated with the generator operating characteristic;
• and
• control circuitry configured to:
• calculate a flow adjustment based on a target generator operating characteristic of the generator and the measured generator operating characteristic;
• and
• upon calculating the flow adjustment, output a pump control signal to control the variable displacement hydraulic pump to modify a pump operating characteristic of the variable displacement hydraulic pump based on the flow adjustment.