Patent attributes
A boom suspension system may comprise a center frame operably connected to a main frame with linkages configured for vertical movement. A sensor may be operably connected to a pair of boom structures, which may extend laterally outward from opposing sides of the center frame. A controller may be configured to receive input data from the sensor and determine forces or flow rate to tilt cylinders, which may be coupled between each boom structure and the center frame. Each tilt cylinder may be operably connected to a hydraulic circuit, which may comprise a flow control mode and a pressure control mode determined by the controller. The hydraulic circuit may comprise a first set of valves in parallel with a second set of valves. Each set of valves may comprise a solenoid valve in series with a pressure regulating valve and a pressure sensor disposed on either side of each solenoid valve.
