TY - JOUR

T1 - Tracking control of a piezo-hydraulic actuator using input-output linearization and a Cascaded Extended Kalman Filter structure

AU - Haus, Benedikt

AU - Aschemann, Harald

AU - Mercorelli, Paolo

PY - 2018/12

Y1 - 2018/12

N2 - In this paper, an innovative piezo-hydraulic actuator (PHA) is considered that is intended to realize a fully variable valve control in camless combustion engines. A nonlinear model of the hydraulic system part is presented along with linear models of the remaining system parts. Accurate tracking of desired valve trajectories as well as soft landing despite disturbance forces and measurement noise is achieved using a combined control strategy. It consists of an input-output linearization of the nonlinear part as well as feedforward and linear quadratic integral (LQI) feedback control of the linear system part. Given measurements of the valve spool and engine valve positions, a Cascaded Extended Kalman Filter (CEKF) structure provides estimates for the immeasurable states. Simulation results confirm the effectiveness of the proposed approach.

AB - In this paper, an innovative piezo-hydraulic actuator (PHA) is considered that is intended to realize a fully variable valve control in camless combustion engines. A nonlinear model of the hydraulic system part is presented along with linear models of the remaining system parts. Accurate tracking of desired valve trajectories as well as soft landing despite disturbance forces and measurement noise is achieved using a combined control strategy. It consists of an input-output linearization of the nonlinear part as well as feedforward and linear quadratic integral (LQI) feedback control of the linear system part. Given measurements of the valve spool and engine valve positions, a Cascaded Extended Kalman Filter (CEKF) structure provides estimates for the immeasurable states. Simulation results confirm the effectiveness of the proposed approach.

KW - Engineering

KW - Actuators

KW - Bandpass filters

KW - Extended Kalman filters

KW - Feedback linearization

KW - Hydraulic actuators

KW - Hydraulic equipment

KW - Linearization

UR - http://www.scopus.com/inward/record.url?scp=85027405332&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/786d1c11-82e7-36e8-85b4-3d37ac386118/

U2 - 10.1016/j.jfranklin.2017.07.042

DO - 10.1016/j.jfranklin.2017.07.042

M3 - Journal articles

AN - SCOPUS:85027405332

VL - 355

SP - 9298

EP - 9320

JO - Journal of the Franklin Institute

JF - Journal of the Franklin Institute

SN - 0016-0032

IS - 18

ER -