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← TechnologyWhich outcome arises when hydraulic actuator's proportional valve response time exceeds control loop's update rate?
A)Limit cycle oscillations near setpoint✓
B)Excessive pressure spikes in the system
C)Thermal runaway in the hydraulic fluid
D)Increased wear on actuator seals
💡 Explanation
If the valve's response is slower than the control loop's update rate, the feedback loop will continuously overcorrect, causing limit cycle oscillations because the system is unable to settle smoothly. Therefore, oscillations result, rather than pressure spikes, thermal runaway or increased wear that result from different operational problems.
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