As far as I observe from the movement of sunflower for tracking the sun throughout the day, in morning (around 10 AM) sunflowers pointing to the sun and in afternoon (after around 3:30 PM), sunflowers pointing approx. 90 degrees anticlockwise to the sun's position. However this is based upon manual observation, I have not validated this by some instrument or tool. Kindly comment on this for more precise understanding.

I think it can be modeled , all systems with inputs and outputs can be modeled.

Thank you Mr. Ghamri,

Can you please send and elaborate the diagram in English?

We have to analyze the reason by which the sunflower tracks the sun.

Either the front portion of the flower (yellow part) or the rear part of the flower senses the optical rays of sunlight.

Then we have to identify the chemical/substance responsible to drive the sunflower for tracking it according to the sun's movement throughout the day.

Subsequently, It is is required to model an equivalent electrical model with the help of motors, semiconductor components and electromechanical circuits etc.

Dear Dr Sharma

you can check out Chapter 2 in our book 

https://www.researchgate.net/publication/263128579_SOLAR_TRACKING

the chapter on solar harvesting also discusses heliotropism in artificial photosynthesis context. 

Kind regards

Gerro

Book Solar Tracking, Sun Tracking, Sun Tracker, Solar Tracker, Fo...