Which unstable oscillation arises when servo-valve-controlled hydraulic actuator performance degrades?

💡 Explanation

Chatter emerges because the accumulator's *impedance mismatch* causes pressure pulsations when the servo-valve modulates oil flow with degraded response. Therefore, the actuator dithers and oscillates under slight loads, rather than executing commanded positions, unlike other servo faults.

• Which outcome generally occurs when stiction impairments limit a hydrostatic actuator control?
• Which risk increases when a hydraulic relief valve's pilot stage filter becomes clogged?
• Which outcome results when the fuel injector duty cycle exceeds design limits in a turbocharged engine?
• Which consequence results when hydraulic system viscosity increases and a proportional valve orifice size remains static?
• Which risk increases when welding rebar directly to structural steel in a concrete column?
• Which outcome occurs when a fighter jet's flight control system incorrectly interprets pilot yaw commands at transonic speeds?