Patent ID: 11946225
Assignee: CATERPILLAR INC.
Field: Civil engineering (Other fields)
Classification: CPC E  F | IPC E  F

Claim 9:
10. A hydraulic system for a machine, comprising:
a first hydraulic circuit including a first pump coupled to a first hydraulic actuator, the first hydraulic actuator configured to move a first implement of the machine;
a first electric motor mechanically coupled to the first pump to power the first hydraulic circuit;
an operator interface configured to receive input from an operator of the machine requesting movement of the first implement and to generate signals indicative of the requested movement; and
a controller communicatively coupled to the first electric motor and to the operator interface, the controller configured to:
receive, from the operator interface, the signals indicative of the requested movement of the first implement;
determine, based at least in part on the requested movement of the first implement, a first flow allocation for the first pump;
identify an efficiency map for the first pump indicating efficiency of the first pump at various operating parameters;
determine, based at least in part on the first flow allocation and the efficiency map for the first pump, a target displacement for the first pump;
determine, based on the target displacement for the first pump, a first target electric motor speed for the first electric motor; and
control the first electric motor to operate at the first target motor speed.