PLC and motion control solutions for multiple stepper motor -

stepper motor due to the delicate volume, low cost, stable running, are widely used in the low-end industry, step motor motion control to realize the closed loop, is a big problem in the industrial control industry.

there are two main problem, the origin of uncertainty and out-of-step, currently, adopting high speed photoelectric switch as the origin of stepper system, the error in millimeter, so in the field of precise control, are not acceptable. In addition, in order to improve the operation accuracy, driving stepper motor system to adopt more segmentation, some more than 16, if use in the process of reciprocating motion, the great error in the amazing. Already can not adapt to the processing field.

therefore, step motor closed-loop control system is put forward, so as to adapt to the current demand in the field of motor control.

1, the hardware connection

hardware connection with encoder, according to the requirement of segmentation, with different levels of resolution encoder real-time feedback.

2. The origin control

according to Z encoder signal identification, calculate the origin of coordinates, with CNC system, same accuracy can reach 2 x 4 / encoder resolution.

3, step control

according to the feedback of the encoder data, real-time adjustment of the output pulse, according to the step adjustment, adopt corresponding measures.