The increasing demand for microchips has driven the search for new control techniques in industry. While linear controllers dominate industrial control due to their simplicity and effectiveness, they face inherent limitations such as the waterbed effect and Bode’s gain-phase trade-offs. To address these challenges, this research explores the potential of nonlinear control, specifically reset control, to improve upon linear controllers. Reset control was used, since the sensitivity function of the reset controller can directly be constructed using the frequency response function of the plant. This thesis introduces a method for incorporating a reset based filter that improves upon linear control through closed-loop frequency domain shaping(pseudo-sensitivity).

In this study we introduce the following: an introduction and shaping method of a modified constant gain and lead in phase (CGLP) element. Which is achieved by adding gain in parallel with the generalized first order reset element (GFORE) to limit high-frequency nonlinear behavior. Furthermore a process for frequency-domain shaping of the added filter that can be implemented with an existing linear controller. Lastly, the thesis demonstrates how to solve pseudo-sensitivity constraint violations and shows the effectiveness of direct pseudo-sensitivity shaping for improving time-domain response.

Validation using both a simulated and an industrially used wirebonder, confirmed that the reset-based controller significantly outperformed optimized linear controller, with a 39.50% decrease in mean settling time and a 40.30% decrease in mean root-mean-square error (RMSE). This research shows the potential of reset control in industrial applications.