Table of Contents
Steady-state error is an important parameter in control systems that indicates the 're differente between thee desired output and thee actual output after thas settled. Calculating this error helps in designing systems that met specific exacty requirements. This article provides a stepby- step accerach to determinate stedy- state error in various control systems configurations.
Understanding Steady- State Error
Steady-state error is the residual error residuar persiting after transient effects have e dissipated. It is influence d by thee systemem type, input signal, and the systemem 's transfer funktion. Common input signals include step, ramp, and parabolic inputs, each affecting the steady-state error differently.
Step-by- Step Calculation Methodd
Follow these steps to calculate thee steate steate error:
- Identifikace je určena pro signal type (step, ramp, etc.).
- Determine the systemem 's transfer function, G (s).
- Calculate te error constant based on the e system type: current 1; currency 1; FLT: 0 current 3; current 3; current 1; current FLT: 1 current 3; current 3; current 3d; Position error constant (Kp) for step input.
- Velocity error constant (Kv) for ramp input.
- Acceleration error constant (Ka) for parabolic input.
Example Calculation
Konsider a unity feedback control system with the transfer function G (s) = 10 / (s + 2). For a step input, thee position error constant Kp is calculated as:
CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE3; CLANE3; CLANE3; CCANE1; CCANE1; CLANE1; CLANE1; CLANE1; CLANE3; CLANE3; CLANE3; CCANE3; CCANE3; CCANE33. Gs) = 10 / 2 = 5 CLANE1; CEUT1; CATI1; CATI3; CCANE3; CCANE3;
Te steadystate error is then:
CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CLANE3; = 1 / (1 + Kp) = 1 / (1 + 5) = 1 / 6 CLANE1; CLANE1; CLANE1; CLANE1; CLANE1; CEUT1; CCANE1; CCANE1; CCANE3;