Amin A. Mohammed

9 Questions 13 Answers 0 Followers

Questions related from Amin A. Mohammed

How to differentiate between useful and harmful vibraions in vertical axis wind turbine applications?

As we know vibration is inherent in several machines. When it comes to wind turbines (VAWTs, in particular), there is possibly some sort of useful vibration that can be used for energy generation,...

27 April 2020 7,391 0 View

Where may I find the lift and drag characteristics for SAND 0018/50 Airfoil for different AoA and Re?

I'm looking for the airfoil characteristics for SAND 0018/50 (SANDIA 0018/50) that is used wind turbine (VAWT of Darrieus type) tabulated for different Angle of attack and Reynold number? Any...

26 June 2019 6,634 4 View

How to find the angle of deformation in Ansys APDL?

After solving my problem in APDL, and started doing some post-processing, I want to find how much the deformed shape has rotated (i.e. the maximum angle the furthest node has made comparing with...

24 December 2015 4,041 2 View

How do you obtain the correct dynmic model of a robot manipulator - in closed form - using Lagrange equation in matlab scrip?

Doing dynamic model of RRRR robot manipulator, using Lagrange equation: D(q)∗q′′+C(q,q′)∗q′+g(q)=τ , in Matlab, the issue is that, I'm getting very long-long terms, every equation is a couple of...

15 March 2015 6,615 5 View

Denavit-Hartenberg convention or the product of exponentials formulation, when dealing with the manipulator kinematics?

Though, Denavit-Hartenberg notation is commonly used to describe the kinematics of robot manipulator, some researcher prefer the product of exponential instead; and even the claim that it's...

12 February 2015 5,862 3 View

What is the best symbolic\software package to deal with robot dynamics derivation?

Determining the dynamics model of a robot using Lagrange equation becomes very long and time consuming 'when the degree of freedom increase', moreover,it involves many derivatives and...

20 December 2014 9,390 8 View

What are "the base inertial parameters" in robot dynamics?

I do not fully understand what base inertial parameters means? What are they used for? I'm carrying out an inverse kinematics and direct dynamics of a 4 dof. articulated robot. Is there helpful...

23 November 2014 2,046 3 View

Can anyone assist with inverse kinematics of 4R planar manipulator?

I'm working on inverse kinematics for a 4 dof planar manipulator. I want to solve the inverse kinematics for a given end effector position and orientation (dx,dy,dz, alpha) dz=0. Since it's...

27 April 2014 1,713 4 View

How can we find joint variables for known position of an end-effector using inverse kinematics, DH principles for more than 3 dof manipulator?

After finding the total transformation matrix, we'll get three equations for the end-effector coordinates [dx dy dz]T. So how can we solve them for 4 (or 5) joints parameters in case of 4 ( or 5 )...

04 April 2014 5,194 2 View