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A fluid system comprises a static LS valve, a dynamic LS valve, a priority valve biased to preferentially supply pressurized fluid to both the static LS valve and the dynamic LS valve, and a signal-mimicking device fluidly coupled to a static LS port of the static LS valve, a dynamic LS port of the

A fluid system comprises a static LS valve, a dynamic LS valve, a priority valve biased to preferentially supply pressurized fluid to both the static LS valve and the dynamic LS valve, and a signal-mimicking device fluidly coupled to a static LS port of the static LS valve, a dynamic LS port of the dynamic LS valve, and a dynamic LS pilot port of the priority valve for mimicking a static LS signal from the static LS port of the static LS valve into a dynamic LS signal from the dynamic LS port of the dynamic LS valve to produce a combined LS signal communicated to the dynamic LS pilot port of the priority valve. Such a fluid system may be applied to a steering system. An associated method is disclosed.

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The invention claimed is: 1. A method of operating a fluid system comprising a static LS valve, a dynamic LS valve, and a dynamic LS priority valve biased to preferentially supply pressurized fluid to both the static LS valve and the dynamic LS valve, the method comprising: mimicking a static LS si

The invention claimed is: 1. A method of operating a fluid system comprising a static LS valve, a dynamic LS valve, and a dynamic LS priority valve biased to preferentially supply pressurized fluid to both the static LS valve and the dynamic LS valve, the method comprising: mimicking a static LS signal of the static LS valve into a dynamic LS signal of the dynamic LS valve to produce a combined LS signal, and communicating the combined LS signal to the dynamic LS priority valve. 2. The method of claim 1, wherein the static LS valve is a joystick steering control valve, the dynamic LS valve is an orbital steering control valve, and the mimicking comprises mimicking a static LS signal of the joystick steering control valve into a dynamic LS signal of the orbital steering control valve to produce the combined LS signal. 3. The method of claim 1, wherein the mimicking comprises a signal-mimicking valve mimicking the static LS signal into the dynamic LS signal to produce the combined LS signal. 4. The method of claim 3, wherein the mimicking comprises urging the signal-mimicking valve toward a closed position with the static LS signal and a spring. 5. The method of claim 4, wherein the mimicking comprises at least partially opening the signal-mimicking valve against a closing force from the static LS signal and the spring toward an at least partially open position with pressure from a priority supply port of the priority valve. 6. The method of claim 4, comprising adjusting a spring setting of the spring. 7. The method of claim 1, wherein: the mimicking comprises: at least partially opening a, flow path between a fluid inlet port of a signal-mimicking valve and a fluid outlet port of the signal-mimicking valve in response to communication of pressure from a priority supply port of the priority valve to a pilot port of the signal-mimicking valve; at least partially restricting the flow path in response to communication of the static LS signal to another pilot port of the signal-mimicking valve, resulting in a pressure indicative of the static LS signal; and combining the pressure indicative of the static LS signal with the dynamic LS signal received from a dynamic LS port of the dynamic LS valve via the fluid outlet port to produce the combined LS signal; and the communicating comprises communicating the combined LS signal from the fluid inlet port to a dynamic LS pilot port of the priority valve. 8. A fluid system, comprising: a static LS valve, a dynamic LS valve, a priority valve biased to preferentially supply pressurized fluid to both the static LS valve and the dynamic LS valve, and a signal-mimicking device fluidly coupled to a static LS port of the static LS valve, a dynamic LS port of the dynamic LS valve, and a dynamic LS pilot port of the priority valve for mimicking a static LS signal from the static LS port of the static LS valve into a dynamic LS signal from the dynamic LS port of the dynamic LS valve to produce a combined LS signal communicated to the dynamic LS pilot port of the priority valve. 9. The fluid system of claim 8, wherein the signal-mimicking device is configured as a signal-mimicking valve. 10. The fluid system of claim 9, wherein the signal-mimicking valve comprises a spring urging the signal-mimicking valve toward a closed position. 11. The fluid system of claim 10, wherein the signal-mimicking valve comprises a spring-setting adjuster for adjusting a spring-setting of the spring. 12. The fluid system of claim 9, wherein the signal-mimicking valve comprises a pilot port fluidly coupled to the static LS port of the static LS valve to urge the signal-mimicking valve toward a closed position in response to the static LS signal. 13. The fluid system of claim 9, wherein the signal-mimicking valve comprises a pilot port fluidly coupled to a priority supply port of the priority valve to receive pressure therefrom to urge the signal-mimicking valve from a closed position toward an at least partially open position. 14. The fluid system of claim 9, wherein the signal-mimicking valve comprises: a fluid inlet port fluidly coupled to both the dynamic LS pilot port of the priority valve and a priority supply port of the priority valve, the priority supply port fluidly coupled to a pressure port of the static LS valve and a pressure port of the dynamic LS valve, a fluid outlet port fluidly coupled to the dynamic LS port of the dynamic LS valve, a spring urging the signal-mimicking valve toward a closed position blocking flow between the fluid inlet and outlet ports of the signal-mimicking valve, a pilot port fluidly coupled to the static LS port of the static LS valve to urge the signal-mimicking valve toward the closed position in response to the static LS signal, and a pilot port fluidly coupled to the priority supply port of the priority valve to receive pressure therefrom to urge the signal-mimicking valve from the closed position toward an at least partially open position allowing at least partial flow from the fluid inlet port of the signal-mimicking valve to the fluid outlet port of the signal-mimicking valve. 15. A steering system, comprising: a joystick steering control valve, an orbital steering control valve, a priority valve biased to preferentially supply pressurized fluid to both the joystick steering control valve and the orbital steering control valve, and a signal-mimicking valve fluidly coupled to a static LS port of the joystick steering control valve, a dynamic LS port of the orbital steering control valve, and a dynamic LS pilot port of the priority valve for mimicking a static LS signal from the static LS port of the joystick steering control valve into a dynamic LS signal from the dynamic LS port of the orbital steering control valve to produce a combined LS signal communicated to the dynamic LS pilot port of the priority valve. 16. The steering system of claim 15, wherein the signal-mimicking valve comprises a spring urging the signal-mimicking valve toward a closed position. 17. The steering system of claim 15, wherein the signal-mimicking valve comprises a pilot port fluidly coupled to the static LS port of the joystick steering control valve to urge the signal-mimicking valve toward a closed position in response to the static LS signal. 18. The steering system of claim 15, wherein the signal-mimicking valve comprises a pilot port fluidly coupled to a priority supply port of the priority valve to receive flow therefrom to urge the signal-mimicking valve from a closed position toward an at least partially open position. 19. The steering system of claim 15, wherein the signal-mimicking valve comprises: a fluid inlet port fluidly coupled to both the dynamic LS pilot port of the priority valve and a priority supply port of the priority valve, the priority supply port fluidly coupled to a pressure port of the joystick steering control valve and a pressure port of the orbital steering control valve, a fluid outlet port fluidly coupled to the dynamic LS port of the orbital steering control valve, a spring urging the signal-mimicking valve toward a closed position blocking flow between the fluid inlet and outlet ports of the signal-mimicking valve, a pilot port fluidly coupled to the static LS port of the joystick steering control valve to urge the signal-mimicking valve toward the closed position in response to the static LS signal, and a pilot port fluidly coupled to the priority supply port of the priority valve to receive pressure therefrom to urge the signal-mimicking valve from the closed position toward an at least partially open position allowing at least partial flow from the fluid inlet port of the signal-mimicking valve to the fluid outlet port of the signal-mimicking valve.