  In this paper, our objective is to develop novel passivity based control
techniques by introducing a new passivity concept named Krasovskii passivity.
As a preliminary step, we investigate properties of Krasovskii passive systems
and establish relations among four relevant passivity concepts including
Krasovskii passivity. Then, we develop novel dynamic controllers based on
Krasovskii passivity and based on extended shifted passivity.
