hello i am expert in matlab, i am mechatronic engineer i had course in numerical technique, suck like Newton's rules, Lagrangian techniques, i talked control system course in my university so i have a very good back ground in compensator desgin, using matlab, and its depend in load resistive capacitive and inductive, and i had been work in pid controller in this site please check my portfolio to see the details.
i have a good back ground in root locks,discreet systems, Nyquist plots and Nichols chart.
the built of variables system is so normal to me, i was an instructor of matlab course and make many example in this field, i am familiar with MIMO systems,