Hi friends, I'm right now planning to implement a wind turbine, in a particular area with wind speed measured as 7.1m/s. My plan is to have a control over the blades, ie; pitch control. I'll be using a perm mag DC generator for generation. Instead of measuring the voltage, current, rpm and all, I wish to use an encoder and measure the main shaft's rotation in about 3secs, and pitch the blades to a particular angle, so that the rpm of the shaft is increased. I need to continue the process until the rated rpm is achieved. Once it tend to go beyond the rated rpm, the blades need to be pitched in the opp directn. The encoder value and its corresponding rpm, obtained by the generator will be measured and matched using trial and error method, either using a tachometer, or an anemometer.
Help required: All the construction, installation and all are safe in my hands, but I need help in the coding. I'm confused whether to use a stepper or a servo. My technical knowledge suggests me of using a stepper, as it involves even very fine step control. So someone please show me how the code looks like. I've gone through a numbr of articles and projects dealing with this kinda topics. But none of them satisfied my need. So, those who have gone through this article, leave a reply, help me with the coding. Your small help might solve my problem. Looking forward for replis..