Take-home lab kits for system dynamics and controls courses. - William Durfee; Perry Li; David Waletzko (ACC, 2004)

Optimal and robust design of unstable valve. - Qinghui Yuan; Perry Li (ACC, 2004)

Independent metering of pneumatic actuator for passive human power amplification. - Venkat Durbha; Perry Li (ACC, 2010)

A nonlinear spring model of hydraulic actuator for passive controller design in bilateral tele-operation. - Venkat Durbha; Perry Li (ACC, 2012)