Work Machine

A work machine comprising:

• a plurality of hydraulic pumps;
• a first hydraulic actuator that uses the plurality of hydraulic pumps as hydraulic fluid sources;
• a directional control valve that controls a flow of hydraulic fluid to the first hydraulic actuator;
• a plurality of pump combiner valves that controls each supply flow rate of hydraulic fluid from the plurality of hydraulic pumps to the first hydraulic actuator;
• a first operation device that operates the directional control valve;
• a load pressure sensor that senses a load pressure of the first hydraulic actuator;
• a second hydraulic actuator that can share a hydraulic fluid source with the first hydraulic actuator;
• a second operation device that operates the second hydraulic actuator;
• and a controller that controls the plurality of pump combiner valves, wherein
• the controller stores priority pump data defining a priority pump that is selected from among the plurality of hydraulic pumps according to an operation of the first operation device and preferentially supplies hydraulic fluid to the first hydraulic actuator for each operation load pattern classified according to operation patterns of the first hydraulic actuator and the second hydraulic actuator and a load pattern of a hydraulic circuit of the first hydraulic actuator,
• the controller has a first function related to operation control of the plurality of pump combiner valves and a second function related to learning of the priority pump data, and,
• by the first function,
• the controller controls the plurality of pump combiner valves when the first operation device is operated, on a basis of the operation patterns corresponding to a first operation signal input in response to the operation of the first operation device and a second operation signal input in response to operation of the second operation device, the load pattern corresponding to the load pressure input from the load pressure sensor, and the priority pump data,
• by the second function,
• the controller accumulates actual result data on the first operation signal, the second operation signal, and the load pressure,
• is configured to compute an actual computation value of a preset predetermined optimization index for the operation of the first operation device on a basis of the actual result data under an implementation condition in which hydraulic fluid is preferentially supplied to the first hydraulic actuator from the priority pump,
• is configured to compute a trial computation value of the optimization index for the operation of the first operation device on the basis of the actual result data under a virtual condition in which hydraulic fluid is preferentially supplied to the first hydraulic actuator from a non-priority pump that is one of the hydraulic pumps excluding the priority pump, and
• is configured to compare the actual computation value and the trial computation value with each other, and update the priority pump data by reflecting the virtual condition in a case where the trial computation value is better than the actual computation value.