A Data-Driven Constrained Norm-Optimal Iterative Learning Control Framework for LTI Systems

作者：Janssens Pieter^*; Pipeleers Goele; Swevers Jan

来源：IEEE Transactions on Control Systems Technology, 2013, 21(2): 546-551.

DOI：10.1109/TCST.2012.2185699

• Data-driven control
• energy-optimal point-to-point motions
• iterative learning control (ILC)
• linear time-invariant (LTI) systems
• precision motion control

This brief presents a data-driven constrained norm-optimal iterative learning control framework for linear time-invariant systems that applies to both tracking and point-to-point motion problems. The key contribution of this brief is the estimation of the system's impulse response using input/output measurements from previous iterations, hereby eliminating time-consuming identification experiments. The estimated impulse response is used in a norm-optimal iterative learning controller, where actuator limitations can be formulated as linear inequality constraints. Experimental validation on a linear motor positioning system shows the ability of the proposed data-driven framework to: 1) achieve tracking accuracy up to the repeatability of the test setup; 2) minimize the rms value of the tracking error while respecting the actuator input constraints; 3) learn energy-optimal system inputs for point-to-point motions.

• 出版日期2013-3