David Cho

4 Questions 3 Answers 0 Followers

Questions related from David Cho

How to solve an optimization problem with stability constraints using 'fmincon'?

Hi, Let us say that a plant model of the following form is given: \dot{q} = A*q + B*u, y = C*q. The output of the model (y) is its position (x) and velocity (v). Using this output, I am going to...

02 April 2019 9,360 3 View

Why do PID controllers work well for nonlinear systems?

Hello, As far as I know, PID controllers are most widely used in the industry although all real-life systems are nonlinear. Is there any mathematical proof that PID controllers (with sufficiently...

01 March 2017 2,562 3 View

Why should mismatched uncertainties be treated separately from matched uncertainties?

Hello, I am studying sliding mode control and have found that many references distinguish mismatched uncertainties from matched ones. I know that mismatched uncertainties do not enter the input...

01 February 2017 5,982 5 View

In spite of chattering, why is sliding mode control studied so extensively?

Hi I am studying adaptive sliding mode control. In many papers, the control law is defined as u = u_nom - K(t)*sign(s), where u_nom is 'ideal control' that is continuous assuming no uncertainties...

09 April 2016 1,688 12 View