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Sensitivity Analysis

In your projects, many of your parameters will be formulas and therefore dependent on other Valis. Valispace allows you to carry out a trade-off analysis of how each Vali within a formula affects the output Vali by carrying out a sensitivity analysis.

  1. Click the Vali (1) you choose to perform the trade-off/sensitivity analysis

  2. Once you click the Vali, the details tab opens up. Click on the “Sensitivity Analysis” (2) in the top panel

  3. Choose the dependent variable (3) you would like to analyse in the drop-down menu

The user has the option to change/edit the “Min” and “Max” range of the dependent variable and also the step size. Once the user clicks “Apply”, the impact graph will show the effect of the dependency on the Vali being analysed. 

For example, we have performed a sensitivity analysis on the platform mass. We have chosen the dependency of Lithium-ion battery efficiency. Though the battery efficiency is not directly linked to the platform mass, the battery efficiency is used in the formulas to calculate the area of the solar panel which in turn affects the mass of the EPS subsystems, which in turn affects the platform mass.

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