Description: for an integrator, the quotient of the time derivative of the output variable and the constant value of the input variable; Name: integration coefficient
Description: integral element, the quotient of the time derivative of the output variable to the fixed value of the input variable; Name: integral action coefficient
Description: input variable to a comparing element in a controlling system, which sets the desired value of the controlled variable and is deducted from the command variable; Name: reference variable