Four turn faster or take eight turn faster?
2, step angle: corresponding to a pulse signal, motor rotor rotation angle displacement is expressed by theta. Theta =360 degrees (rotor tooth number, J* running number), take conventional two and four phases, rotor tooth as 50 teeth motor, for example. Four running step angle theta =360 / (50*4) =1.8 (commonly known as the whole step), eight shot operation stepangle 9 =360 / (50*8) =0.9 (commonly known as the half step).These two concepts are clear, we can calculate the speed, the basic step angle of 1.8 DEG stepper motor as an example (now on the market of the two conventional and four phase hybrid stepping motor is the basic step angle 1.8 degrees), four phase eight step operation mode, each receives a pulse signal. 0.9 degrees per second, if receiving 400 pulses, then the speed of 400X0.9 per second =360 degrees, and every second round, 60 revolutions per minute.
1, the number of beats: a magnetic field changes periodically required pulse number or a conductive state represented by N, or a motor turned a tooth angle required pulse number to four phase motor as an example, there are four phase four operation mode is AB-BC-CD-DA-AB, four phase eight step operation mode A-AB-B-BC-C-CD-D-DA-A.
Four phase stepper motor has two kinds of operation mode, and four phase four; two, four phase eight beat.In order to understand the speed of the four phase, eight beat operation and the next step motor, it is necessary to know two basic concepts first.
