08 August 2014 1 9K Report

Anyone can help with spacecraft attitude error dynamics simulation?

More Samira Eshghi's questions See All
Can anyne share a simple SIMULINK/MATLAB file that shows the implementation of a control system with random sampling?

I need help in understanding the role of (random) sampling in implementation of a control system in Simulink. I need a basic, general example to visualize the role of the sampler in a control...

03 April 2018 3,968 3 View

How can we compare energy consumption of different data sampling mechanism in MAS?

The frequency of data sampling differs in commonly used mechanism such as uniform, nonuniform, random, event-triggered etc. Less frequent sampling saves energy. How do we compare energy...

02 March 2018 9,058 1 View

Any recommendation for a sample of research frame (Concept Map) work on Formation Flying?

Hi I'm conducting a literature review on Formation Flying. While there are numerous studies and surveys on the subject, I have not been able to find a well-structured concept map on the general FF...

08 September 2016 9,176 2 View

How can I perform fractional powers of vectors in Matlab to avoid domain error?

I'm trying to perform fractional power for a vector containing both positive and negative values. The power is not an integer so the Simulink fails to perform the operation and gives out the...

31 December 2014 8,749 8 View

What could cause divergence in results obtained from a pure simulink simulation and one with subsystems substituted by embedded matlab functions?

I have simulated a system using pure simulink blocks. Later I substituted some of the subsystems by commands in a matlab embedded function. The results are completely different. What could cause...

10 November 2014 8,795 6 View

Is it reasonable to approximate the quaternion error that is generally represented by the quaternion multiplication by a deduction for small angles?

In page 21 of this lecture note, quaternion error approximation for small errors has been defined as the deduction of the desired from current. It does not make sense mathematically speaking....

09 October 2014 3,808 1 View

Will I have better opportunity to pursue PhD if I change my firld of study from aerospace engineering to control system engineering?

The primary focus of my master thesis is control system design, the plant on which the control approaches are implemented is associated with aerospace engineering. Will I have better chance of...

05 June 2014 4,994 5 View

What is the general idea of using Jacobian in control problems?

What are the advantages of using Jacobian in control problems?

04 May 2014 6,821 4 View

How can I identify the underpinning causes of singularity error in Simulink?

The singularity error identifies the block in which the problem occurs (e.g.Integrator), however, the problem initiates in other part of block which finally causes singularity in integrator. What...

03 April 2014 5,009 5 View

What is the general principle of designing the switching control in sliding mode control?

It could be taken as u_sw=-(1/b)ksgn(s) where k is defined as in Applied nonlinear Control by slotine. Does the definition vary for advanced SMC like non-singular terminal SMC?

02 March 2014 2,228 6 View

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