Flow distribution control method, device, and apparatus for hydraulic system and hydraulic system

A flow distribution control apparatus for a hydraulic system, wherein the hydraulic system comprises N loops L1-LN, the apparatus comprises one or more processors and a non-transitory computer-readable storage medium storing program instructions, and when executing the program instructions, the one or more processors are configured to:

• compare pressures P1-PN at an inlet of an actuator in each loop of the hydraulic system;
• according to a comparison result, determine a loop Lp1 which requires flow compensation;
• and
• conduct flow compensation on the loop Lp1 according to a theoretical flow of the loop Lp1 and an actual flow in the loop Lp1 which flows into the actuator,
• wherein the number of loops in the loop Lp1 is less than or equal to N;
• and
• wherein the N loops L1-LN are connected in parallel, each loop includes the actuator and a main throttle valve and a flow supplementing valve which are connected with the actuator, the main throttle valve and the flow supplementing valve are connected in parallel, and N is greater than or equal to 2.

A hydraulic system, comprising:

• a pump configured to provide a flow for the system;
• N loops L1-LN, wherein each loop comprises an actuator and a flow regulation element connected with the actuator, and the flow regulation element is configured to provide a flow for the actuator;
• and
• the hydraulic system further comprising a controller, wherein the controller is connected with the pump and the flow regulation element, and configured to:
• compare pressures P1-PN at an inlet of an actuator in each loop of the hydraulic system;
• according to a comparison result, determine a loop Lp1 which requires flow compensation;
• and
• conduct flow compensation on the loop Lp1 according to a theoretical flow of the loop Lp1 and an actual flow in the loop Lp1 which flows into the actuator,
• wherein the number of loops in the loop Lp1 is less than or equal to N;
• and
• wherein the N loops L1-LN are connected in parallel, each loop includes the actuator and a main throttle valve and a flow supplementing valve which are connected with the actuator, the main throttle valve and the flow supplementing valve are connected in parallel, and N is greater than or equal to 2.