Next generation of tools for robust control

This paper describes the new MATLAB robust control toolbox which combines the original MATLAB robust control toolbox, LMI and the /spl mu/-analysis and synthesis toolboxes. The toolbox introduces an uncertain data structure and new robustness analysis and synthesis algorithms. The uncertain data structure is based on linear fractional transformations and forms the core infrastructure to model and analyze uncertain systems and matrices. The uncertain data structure is fully compatible with the control system toolbox data structure. In addition to the structured singular value and LMI solvers, the robust analysis commands have been expanded to include multivariable loop analysis and worst-case gain, sensitivity and gain/phase margin routines. A new H/sub /spl infin// loop-shaping algorithm and automated /spl mu/-synthesis have been added to the suite of synthesis algorithms. In addition to the enhanced functionality, the new MATLAB robust control toolbox provides enhanced usability of advanced control techniques for all users.