Control of hydraulic system of construction machine

The hydraulic system may include: a first actuator for controlling the first link member; a second actuator for controlling the second link member; a first primary hydraulic circuit and a first secondary hydraulic circuit including the first actuator; a second primary hydraulic circuit and a second secondary hydraulic circuit including the second actuator; a first pump for flowing a fluid through the first primary hydraulic circuit and the second secondary hydraulic circuit; a second pump for flowing a fluid through the second primary hydraulic circuit and the first secondary hydraulic circuit; and a controller. The controller may be configured to determine to enable an operator assistance mode and close a first valve that controls fluid flow through the first secondary hydraulic circuit and a second valve that controls fluid flow through the second secondary hydraulic circuit. 液压系统可包括：用于控制第一连杆构件的第一致动器；用于控制第二连杆构件的第二致动器；包括所述第一致动器的第一主液压回路和第一次液压回路；包括所述第二致动器的第二主液压回路和第二次液压回路；第一泵，所述第一泵用于使流体流过所述第一主液压回路和所述第二次液压回路；第二泵