Hydraulic circuit arrangement and control system for ganged electronically-commutated pumps

A hydraulic circuit arrangement comprising:

• a plurality of electronically-commutated pumps providing flow to a common hydraulic line, each of the electronically-commutated pumps provided with an associated electronically-commutated pump controller configured to determine whether to enable or disable individual piston cylinder assemblies of the electronically-commutated pumps based on a displacement command for the respective electronically-commutated pump, the electronically-commutated pump controllers configured to regulate the opening and/or closing of individual low and/or high pressure valves of the electronically-commutated pumps to thereby determine the displacement of fluid through each piston cylinder assembly on a cycle-by-cycle basis, the plurality of electronically-commutated pumps including one or more quantized electronically-commutated pumps;
• and
• one or more continuously-variable pumps providing flow to the common hydraulic line;
• wherein the one or more quantized electronically-commutated pumps are configured to produce a quantized target flow value that is less than a total target flow value determined for the common hydraulic line, and
• wherein the one or more continuously-variable pumps are configured to produce an unquantized target flow value that is the difference between the quantized target flow value and the total target flow value.