| 摘要 |
A hydrostatic power steering system with constant volume feedback compensation including first and second steering cylinders. Each cylinder has a housing containing a piston with an attached piston rod extending through one end of the housing. The pistons and piston rods form a head chamber and two feedback chambers within each of the cylinders. The outer ends of the piston rods are connected to a pair of steerable wheels and also to each other by a mechanical link which allows the piston rods to move simultaneously. A control valve is also present which selectively controls the passage of a pressurized fluid from a supply source to a head chamber of either of the cylinders. The cylinders, which have their feedback chambers fluidly connected together, are manually operated by a steering wheel which actuates a metering pump connected across the fluid passages. As the steering wheel is turned, the fluid is transferred among the various chambers of the steering cylinders causing the piston rods to extend and retract, thereby turning the wheels.
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