Arash M. Dizqah

11 Questions 20 Answers 0 Followers

Questions related from Arash M. Dizqah

How can I have a solution with the guaranteed strict complementarity condition using available solvers like IPOPT?

Since the strict complementarity condition (between the Lagrange multipliers and the inequality constraints) is not guaranteed for the optimal solution of a quadratic programming problem, I wonder...

19 February 2015 7,909 8 View

How can I under-estimate a problem with multiple modes of operation?

I have an optimisation problem with a two-stage cost function, consisting of two parts. For a parameter value less than a threshold (which is an optimal value by itself), only the first part...

17 February 2015 2,301 1 View

Is there any research on applying port-controlled Hamiltonian modelling technique for systems with algebraic states and constraints (DAEs)?

I am wondering please if there is also researches on considering algebraic states and constraints for the passivity-based control approach for PCHDs proposed by Van Der Schaft? What I am saying is...

11 July 2013 2,824 1 View

Can I say that non-holonomic constraints are a special case of algebraic constraints in DAEs?

I am not so familiar with holonomic constraints and I am wondering if there is any relation between these kind of constraints and algebraic constraints in DAEs. Is it right to say that in...

11 July 2013 6,476 0 View

Is there a systematic algorithm to prove that a system is a differential inclusion of the Filippov type?

Supposing that there is a hybrid system which has been modelled mathematically as HDAEs. The simulation results indicate that the states are continuous, and so the discontinuities locate at RHS,...

30 March 2013 1,683 1 View

Is there any specific considerations when the discontinuity of a RHS discontinuous system locates at the algebraic rather than the differential state?

Supposing there is a hybrid DAE system with the Fillipov solution which needs to be converted to a problem with complementarity constraints (MPCC), I am wondering if the discontinuity locates at...

19 January 2013 7,387 1 View

How can I calculate the index of a system representing by hybrid differential algebraic equations (DAE)?

Supposing a system, which can be modeled with DAEs, has also got discrete states, which means that it is a hybrid DAE system. Is there any systematic algorithm to calculate the differential index...

22 November 2012 7,964 3 View

Is there any numerical tool to calculate the index of a system represented by differential algebraic equations (DAEs)?

It is required to calculate the index of DAEs; however, I can not find it analytically due to nonlinearity. Hence, it needs to be found numerically.

02 November 2012 970 1 View

Is it still a differential algebraic equation (DAE) if there is unmanipulated inputs in the algebraic constraint of a dynamical system?

Supposing there is a vector of system dynamics, called F, consisting of differential states, x, and algebraic states, y, and in addition to the manipulated control signals, u, there are some...

31 October 2012 8,533 10 View

Is there any way to predict the d- and q-axis inductance of a permanent magnet synchronous generator from the available information in datasheets?

I need to simulate a PMSG and I have found a commercial generator. According to the available information in datasheet, I can calculate the stator resistance, inertia, voltage constant, and flux...

23 October 2012 6,971 18 View

Is there any comparison between available nonlinear optimal control tools?

There are number of tools for nonlinear optimal control applications such as OpenModelica, CasADi, Jmodelica. I am wondering whether there is a comparison between these tools for different...

16 October 2012 8,504 1 View