Developing magnetic sensor for spool-sleeve displacement of hydrostatic steering unit

This paper presents a critical review of the development process of two angular sensor solutions utilizing magnetic sensing. The objective is to accurately measure the rotational valve opening in a Orbital Steering Power Unit (OSP), which determines the flow rate of oil required for steering power. Currently there are none available products that allow for direct determination of the valve opening and the relationship between this angle and the metered flow from an OSP. A displacement sensor for the valve opening offers more accurate insights for product development and application of the steering unit. It could potentially be used for active control features and system optimization, for-example, the power distribution and usage for electrical off-road vehicles.