Which outcome occurs when a proportional valve's dither signal fails in a hydraulic control system?

💡 Explanation

When the dither signal (small, high-frequency oscillation) fails, the valve spool experiences increased friction due to stiction, causing a larger deadband and hysteresis because controlled oscillation is absent. Therefore, increased hysteresis results rather than pressure compensation, velocity response drop, or high idle energy use, which depend on other system parameters.

• Which outcome occurs when lubricating oil thins excessively between piston and cylinder wall under high thermal load conditions?
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