Include the concept of Hybrid Integrator-Gain System (HIGS) in the section on Reset (control) systems

[hurak]

As introduced in Deenen, D.A., M.F. Heertjes, W.P.M.H. Heemels, and H. Nijmeijer. “Hybrid Integrator Design for Enhanced Tracking in Motion Control.” 2017 American Control Conference (ACC), May 2017, 2863–68. https://doi.org/10.23919/ACC.2017.7963385.

Reportedly used by ASML for their motion control systems.