The Use of Parameter Influence Coefficients in Computer Analysis of Dynamic Systems

Abstract

A new computer technique is described which yields the partial derivatives of problem variables with respect to pertinent system parameters simultaneously with the solution of the original system differential

Dynamic analysis to establish normal shock and vibration of radioactive material shipping packages. Quarterly progress report, January 1-March 31, 1979

“…Table 5 presents Influence coefficients and the ranking of parameters by influence coefficient for a run based on constant "solid" draft gear stiffnesses (Kcpgi and Kc^cg) of 3 x 10 lbs(force)/inch (see Table 3 and Figures 15 and 16). Table 6 presents results for a simulation run based on "solid" draft gear stiffnesses that varied as functions of the relative displacement X,= X,c -Xp (6) beyond the maximum value of Xj for the "active" state. (See Table 4 and Figures 17 and 18).…”

Mathematical models of human operators in simple two-axis manual control systems

“…The term dz/da is known as a "sensitivity coefficient" or "influence coefficient" [16], since it reflects the influence of changes in the model parameter on its output. Let us define…”

Analog Computer Methods for Parameter Optimization

“…10) to the integrator.IV. STEADY -STATE: RANDOM OPTIMIZA TIONA.Performance MeasureParameter optimization for this example is accomplished by determining the values of the variables x, y, and z which produc e a minimum value of f(x,y,z) in Equation(12).…”