control

  1. W

    Geometric control theory

    What actually the difference between classical control theory and geometric control theory? Are there any problems which cannot be solved by classical theory? Thank you!
  2. K

    Identification of unknown function in a DAE system

    I have a system of 1st order odes given by $$ \dot{x_1}(t) = \alpha_1 f_1(x_1,t) + \beta_1 u(t) \\ \dot{x_2}(t) = \alpha_2 f_2(x_2,t) + \beta_2 u(t) $$ They are constrained by an algebraic equation $$ x_1(t) + x_2(t) = k $$ where $\left( \alpha_1,\alpha_2, \beta_1,\beta_2 , k...
  3. S

    Is it possible to define N-dimensional blobs with control points and a few configs?

    I'm trying to dynamically generate N-dimensional blobs with X number of control points. Here's somewhat of an illustration of what I'm talking about. i.imgur.com/JwQK0oo.jpg Here you can see 4 control points in a handful of examples. -The red represents control points that define the...
  4. W

    Nonlinear control loop

    I've designed a nonlinear control strategy which I can only describe as a PID control, with only the I component, which is non-linear. I am struggling to define the function in a meaningful way and need some help :) The design is actually implemented in a FPGA, but a 'normal' software model...
  5. O

    Bellman Equation, Control Vs State

    Hi, I am proficient in standard dynamic programming techniques. In the standard textbook reference, the state variable and the control variable are separate entities. However, I have seen examples, in which a single variable, let's say consumption, is both a state variable and a control...
  6. C

    Maths Problem in control engineering.

    Hi, this is my first post in the forum but I have been visiting this site for several years and learning a lot specially Algebra :) I am currently in my second year university doing Electronics engineering and have a maths problem in control module that I know it's very simple but I can't seem...
  7. S

    Control Chart Attribute Data

    Which Control Chart is suitable for attribute data with large sample sizes? For example: Comcast tracks the number of customer complaints each month for its cable TV service. The count of complaints is the attribute data, and the subgroup sizes (total number of customers) each month, varies...
  8. G

    Prerequisites for Differential Geometry applied for Dynamical Systems and Control

    Hello, I am an Electrical Engineer student and I intend to make a career in the Academic area of Control Theory, which need a lot of study in Nonlinear Systems where Differential Geometry it's used. So, I want to know the prerequisites for study such books like...
  9. S

    Optimal time control for the system of two non-linear ODE

    I have the following system of two non-linear ODE with one control variable (modified model of Lotka-Volterra): $$\left\{\begin{matrix} \frac{dx}{dt}=(\alpha-\beta y)x \\ \frac{dy}{dt}=(-\gamma + \delta x)y + u \end{matrix}\right.$$ Here is $\alpha, \beta, \gamma, \delta$ - some...
  10. Q

    Omitted variable vs control variable

    Hello guys! I am somewhat confused by an explanation in my textbook about the relation between omitted variables and control variables. If I understand it correctly, then the relation is this: If we want to know the effect of X on Y, and there is also an effect of Z on Y and a correlation...
  11. S

    Treatment and control groups

    Does splitting a classroom down the middle into two mutually exclusive and exhaustive groups with police tape constitute a valid method for randomly assigning students to a treatment or control groups? I think it is because in this experiment, study units have the same chance of being...
  12. H

    Need help with simple Optimal Control Problem

    Hi all, With some unscertainty wether this is the right forum to post this is in I have a question regarding a, what I assume, simple optimal control problem. What I want to do is to find the optimal control of the double integrator with boundary conditions the two integrated states and...
  13. D

    slip control algorithm

    Hi, I'm working on a traction control for my motorcycle. I need to choose an algorithm to control the slip of the rear wheel. I have the following data available: - percetnage of slip of the rear wheel (as proportion of speed of the rear and front wheels) - speed - rpm - lean angle - some...
  14. N

    optimal control ODE existance problem

    I'm doing some researches in optimal control problems and stuck with ODE existence problem. Optimal control problem is to minimise the cost of control represented by functional J(u) = \int_0^Tf^0(x(t),u(t),t)dt \to \min subject to \dot x = f(x,u,t) x(0) = x_0 In ordinary cases unique solution...
  15. N

    Mathematical relationship to control camera heading

    Hi everyone, I want to find a mathematical relationship between my head direction and the direction of a camera placed at a distance. The objective is to make the camera heading to same point where my head is looking at. Both my head and the camera are in the horizontal plane and the motion...