how to choose an electric motor and speed controller?
I`m going to design turning table (50-60cm diameter) the spinning disc is made from aluminum so its weight won`t exceed 10kg. it will spin by the mean of an electric motor (maybe gears will be used also). I want the spinning speed to be variable where I can control it from 0 up to 300 rpm (gradually or by steps where each step is 50 rpm) by them mean of speed control or whatever. The feeding power will be used is the normal home socket which is 220-240V 50Hz.
My questions are:
1- What is better to use and easier to implement? AC or DC motor?
2- What will be the power of my motor? and how many amps are enough to turn it at maximum speed? (let`s say the load on the table won`t exceed 20kg)
3- Whatever has been chosen AC or DC, what is the best and easier way to control the speed? How will i control the speed?