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Controlling Electrohydraulic Systems with Unique Low-Cost Valves
Technical Paper
2002-01-1459
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Combine 25 years of electrohydraulic component, production, and system experience with control theory into a new valve design incorporating both nozzle-flapper and solenoid components, and you obtain an innovative, differential pressure control pilot valve (PCP). Utilizing a single component that integrates many functions, this invention reduces a complicated valve into a simple low-cost assembly, yielding a multi-purpose (patent-pending) electrohydraulic servovalve.
This PCP has been combined with several patented boost stages to yield pressure control servovalves (PCS) and flow control servovalves (FCS) that can be utilized in construction, industrial, and agricultural environments. The new, simplified and symmetric PCP/PCS can drive a pump directly with an option of built-in electronic rotational feedback. The PCP generates servovalve performance at less than proportional valve costs. These controls can be utilized in both open and closed-circuit arrangements.
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Citation
Anderson, W., "Controlling Electrohydraulic Systems with Unique Low-Cost Valves," SAE Technical Paper 2002-01-1459, 2002, https://doi.org/10.4271/2002-01-1459.Also In
References
- Yeaple, Frank “Twin Spools Knocks Cost Out of Servovalve,” Design News 40 1984 118 119
- Anderson, Wayne R. “Pressure and Flow Control Servovalves - A Unique Approach,” Proceedings of the 40 th Conference on Fluid Power 38
- Anderson, Wayne R. Controlling Electrohydraulic Systems Marcel Dekker 1988
- Field, Karen Auguston Design News