Recent content by CloDawg

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    Derivative of Cos^3(x)*Sin(x) using Chain Rule

    Thats it chain rule or something: d(uv)/dx=u(dv/dx)+v(du/dx) u=sin(x) v=cos^3(x) (dv/dx) = -3sin((x))cos^2(x) (du/dx) = cos(x) d(uv)/dx= -3sin^2(x)cos^2(x) + cos^4(x) Is this correct?
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    Derivative of Cos^3(x)*Sin(x) using Chain Rule

    Help! I last did this kind of work years ago in university. Can som1 please help me with the derivative.
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    Graduate Yaw Control Dynamics for VAWT Turbines

    M=mgL=ω×JΩ where JΩ is angular momentum. This is the equation i get when modeling a wind turbine as a suspended spinning bicycle wheel. This means that a moment will act on the turbine, tilting the nacelle either up or down. But what about the resisting torque when one attempts to yaw...
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    Graduate Yaw Control Dynamics for VAWT Turbines

    Im building a yaw control system for one of the universitys VAWT turbines. Basically I am struggling to get an equation described below: there should be an algorithm such that the system should try to yaw the turbine as fast as possible, but without causing too high forces on any key...
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    How can I design a reliable slewing bearing for a VAWT yaw control system?

    I'm building a yaw control system for one of the universitys VAWT turbines. I need to design a slewing bearing which can reliably support radial, axial and tilting moments. I have absolutely no idea how to do this or even where to start. Could you please give me some advice as to go about...