I have a contraption designed, and one of the steps requires a weight of about 1kg to be lifted at a controllable speed of 1-5 m/s, max height is 5m.
The initial plan was to glue a spool to a cheap Hi Speed DC Motor that I found in a robotics kit. The following are its specifications:
Voltage Range 3.0-12V Rated voltage 9V No load speed 20160RPM No load current 680MA Maximum current 3.8A Rated torque 600G.CM Rated Power 20W Starting torque 1000G.CM Size Diameter 27.7MM, length 38MM, shaft diameter 2.3MM, axial length 12.7MM
I also have a NEMA 17 stepper motor in the kit.
FYI I am a total beginner and don't have a good understanding of what these mean.
I require the position of the weight must be accurate to the cm scale. So I thought of using the stepper motor, but I read that they are inefficient and cannot hold onto the weight in a no-power state. And I read that DC motors are inaccurate. So I'm really confused right now on what I must do.
I'd really appreciate if anyone could help me out in a detailed solution. Thanks in advance.