Table of Symbols

The symbols used in this document are summarized in the Table of Symbols along with their units. The symbols are listed in alphabetical order.

SymbolDescriptionUnits
\(\mathit{AbsTol}\)Absolute Tolerance
\({C_{\text{s}}}\)Control Variable in the frequency domain
\(c\)Damping coefficient of the spring
\({c_{\text{t}}}\)Control Variable in the time domain
\({D_{\text{s}}}\)Derivative control in the frequency domain
\({E_{\text{s}}}\)Process Error in the frequency domain
\({e_{\text{t}}}\)Process Error in the time domain
\({F_{\text{s}}}\)Laplace Transform of a function
\({f_{\text{t}}}\)Function in the time domain
\({H_{\text{s}}}\)Transfer Function in the frequency domain
\({K_{\text{d}}}\)Derivative Gain
\({K_{\text{p}}}\)Proportional Gain
\(k\)Stiffness coefficient of the spring\({\text{s}}\)
\(\mathit{L⁻¹[F(s)]}\)Inverse Laplace Transform of a function
\(m\)Mass\({\text{kg}}\)
\({P_{\text{s}}}\)Proportional control in the frequency domain
\({R_{\text{s}}}\)Set-Point in the frequency domain
\({r_{\text{t}}}\)Set-Point
\(\mathit{RelTol}\)Relative Tolerance
\(s\)Complex frequency-domain parameter
\(t\)Time\({\text{s}}\)
\({t_{\text{sim}}}\)Simulation Time\({\text{s}}\)
\({t_{\text{step}}}\)Step Time\({\text{s}}\)
\({Y_{\text{s}}}\)Process Variable in the frequency domain
\({y_{\text{t}}}\)Process Variable

Table of Symbols