Intelligent Motion Systems in its MDrive series installing a optional encoder

Intelligent Motion Systems in its MDrive series installing a optional encoder, Make motion controller and NEMA 14, 17, 23, and then the step motor micro stepping drive become one, The figure shows the MDrive17. The techniques--active damping and without encoder stall test-used in Parker company Gemini micro step (subdivision) drive product family.

Salamander hope for these complex algorithm further development to make them more efficient, so small and low cost drive can also rotating joints share these techniques. "After continuous improvement and upgrade, believe that stall detection and fight resonance technology will and today's tiny step technologies like get popular." He concluded. Intelligent Motion Systems Co., LTD application engineering manager Bob Parente said: "The closed-loop stepping motor can be used to need to confirm the position of important occasions." As an example, he cited in the automation laboratory chemical/blood analyzer, the instrument used many moving axis will test sample positioning in the appropriate reagent distribution device, and other stepping motor back, loading accurate number of chemical reagents, and then move forward in the right order number and distribution of reagent-a similar to use multiple syringe process. "Any axis positioning error of many will lead to loss of data or incorrect results." Parents said.

The increased cost of getting value for money An additional component or system development process with extra costs. The step of closed-loop system also is such, although get many benefits, still offers little extra costs. "Even slightly increased the cost of feedback device, and other closed-loop motion control technology than stepping motor is still low cost solutions." Parent explained, "to ensure the accuracy of the results, pay the extra cost is worth it. In important applications, a mistake brought about by rotary union the cost is much higher than the losses will be the cost of the feedback element." Encoder or the role of spin change as a kind of insurance in advance, convinced us that the step motor is working in the correct position.
Balder company, it seems, accuracy and the improvement of the quality of parts from closed loop control, its method is in machine or sports system for actual measurement position and the comparison of the ideal position. "If there are no consistent, motor will campaign to compensate for any out-of-step." Missourian said. Feedback device and closed loop method are reasonable costs and benefits will depend on the specific application. "How much to pay the extra cost of the machine performance depends on the demand, production efficiency, position precision and of the expectations of parts quality."
He added. In addition, was charged with the value of the material in the process will also affect the balance of the cost equation. "Step motor is often used to deal with very expensive materials, from electronic components to fiber optic rotary joint DNA samples." Parker wastewater said. "To prevent a failure occurs and the increasing feedback extra cost is worth it." Parker further mentioned no sensor technology to be able to get as many of the sensors based on feedback technology advantages, and more low increase in the cost of stepping motor control performance. Alexander added: "With a new generation of digital stepping motor control technology progress, will be less and less dependent on external sensor feedback and cost savings for machine manufacturers."