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Questions related to Control Theory
I want to test the controllability of an LTI system constrained by convex control constraint set in the following two steps: i) check the rank of controllability matrix C(A,B); ii) check that zero...
24 February 2014 5,618 2 View
I am starting research on real time systems (their stability, etc.) and I would like to study so called "Waterbed effect" in control systems. Are there any decent resources from which can I start...
18 February 2014 7,283 2 View
I want to use a EKF for parameter (p) and state (x) estimation. I am currently not understanding the difference between (1) the formulation of the parameters as states: x_new=[x,p] and using a...
12 February 2014 2,785 6 View
Can anyone help me and suggest the way one can hybrid B-Spline functions and block pulse functions together?
05 February 2014 2,540 5 View
I'm looking for benefits of these 2 controllers, which one is better? I would also like to know about combination of these controllers to have a higher order TMS controller. What is your idea?
16 January 2014 9,226 3 View
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09 January 2014 1,037 46 View
In the control community, the control of robots is extensively studied. In most cases, it assumes that the robot is governed by the nonlinear Euler-Lagrange dynamics possibly with uncertainties...
23 December 2013 4,069 5 View
I have seen people are using step response model, integrator model etc.
19 December 2013 351 3 View
Choice of sigma surface, uncertainty estimation
10 December 2013 7,564 6 View
Can anyone help me to find good references in "Measure of Linearity and Nonlinearity" field?
04 December 2013 4,035 8 View
Why is the transfer function called the characteristic equation of system?
15 November 2013 7,451 45 View
Just in the form of dx/dt=f(x)+g(x)*u? Are there no other specifications?
11 November 2013 8,990 4 View
We are looking for people in control theory working on the problem of regulation output for non-autonomous linear systems on infinite dimensional state spaces.
02 November 2013 2,779 3 View
Test
18 October 2013 2,963 1 View
Is it the same algorithm with two different names?
17 October 2013 8,325 6 View
Inspired by * Erik Lindberg´s recent contribution (The oscillator - principle of nature), and * a discussion in RG about analogy between electrical and other technical systems I wonder if there...
07 October 2013 2,555 13 View
In our application, we define a Lyapunov function V = (e^T * e)/2 where e is the tracking error. The time derivative of V gives something like this: Vdot < - A + B where A is always positive...
21 September 2013 7,044 14 View
What is LQ Formulation of the Tracker Problem and how can it help in design of Autopilot?
15 September 2013 361 2 View
In linear system, to improve bandwidth, we can use 2 DOF control design with a reference filter. The design is performed in frequency domain. Is there an equivalent method in control of nonlinear...
02 September 2013 5,155 5 View
Which methods can one use to estimate the initial values of the co-state equation when solving nonlinear optimal control problem using indirect numerical methods.
21 August 2013 1,245 6 View
I have the time responses of the input u(t), and output y(t), of a system. Here, u(t) is not a standard signal, like a step or single frequency sine-wave. u(t) is a band limited signal containing...
20 August 2013 7,980 19 View
I have been working on LQR design. The system for which I'm designing a controller has symmetric dynamics, and to consider the effect of disturbance I can't consider the lumped system. Because of...
16 August 2013 955 1 View
i am working on non-cooperative infinite horizon game that has a dynamic system model. Since this system has an infinite response, the stability (in any of asymptotic, BIBO or Lyapunvov sense) of...
29 July 2013 4,984 3 View
The stability analysis of time varying systems is more complicated than the time invariant systems. Such a complexity stems from the fact that the time varying parameters of the system would add...
27 July 2013 2,747 12 View