Control Loop Failure Mode Analysis
Standardized methodology for analyzing control valve force balance, actuator sizing, and signal-to-position mapping to ensure safe failure states.
📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
1. Define Input Parameters
2. Engineering Output
Maximum Spring Force (F_spring_max)
- N
- N
Fluid Force (F_fluid)
- N
- N
Total Resistive Force (F_resistive)
- N
- N
Available Actuator Force (F_actuator)
- N
- N
Valve Position Percentage (Position_pct)
- %
- %
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Download Offline Excel CalculationContext & Assumptions
This analysis evaluates the mechanical force balance of control valves to ensure they revert to a safe state during signal or power failures. It is a fundamental procedure in process engineering for sizing actuators and validating Safety Instrumented Systems.
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