Patent ID: 7146808

Claim:
A hydraulic system, comprising: a tank configured to hold a supply of fluid; a source configured to pressurize the fluid; a plurality of fluid actuators configured to receive the pressurized fluid; and a controller configured to: receive an input indicative of which of the plurality of fluid actuators are a first type of fluid actuator and which of the plurality of fluid actuators are a second type of fluid actuator; receive an input indicative of a desired flow rate for the plurality of fluid actuators; determine a current flow rate of the source; demand the desired flow rate for the first type of fluid actuator and demand a scaled down desired flow rate for the second type of fluid actuator when a total desired flow rate for the plurality of fluid actuators exceeds the current flow rate of the source; and demand a scaled down desired flow rate for all of the plurality of fluid actuators when the desired flow rate for the first type of fluid actuator exceeds the current flow rate of the source.