Almost linear stepper motor is the core of all mechanical drive, today just know linear stepper motor can also be applied to the roller, visible it using a wide range, at the same time it also illustrates its development space is large, the development prospects are very broad. But different mechanical linear stepper motor on the requirements of different, here we come to the selection of linear stepper motor and the drive power for a short description. （A)The selection of linear stepper motor stepper motor can strictly follow the instructions in pulse, don't loss frequency, oscillation; Can rapid start, stop, positive &negative and efficient operation; To meet the various performance indicators and has good dynamic characteristics. The selection, you must ensure that stepper motor output torque is greater than the load torque required, make motor torque-speed characteristics have a certain margin to ensure reliable operation, namely in actual work, all kinds of under frequency load torque must be within the torque-speed characteristic curve Fan Tian. In general, the maximum static torque K. Big motor, load torque is big. Secondly calculate the load inertia of the mechanical system and products required by the start frequency, make it match the stepper motor and has a certain margin, and the highest continuous work frequency can meet the requirements of fast moving products. When choosing stepper motor must also notice the step to make it from the Angle of a and match the mechanical system, to get the required pulse equivalent. (2)Linear stepper motor drive power operation characteristic of step motor and drive power is closely related to be used together, driving power source is from the nc device pulse sequence according to the requirements of distribution mode automatically cycle supply on stepping motor each phase winding, to drive the motor rotation. The control circuit including distributor and power amplifier. 1. Distributor sent through a series of consecutive pulse distributor numerical control device, according to certain order assigned to stepping motor each phase winding, make each phase winding in accordance with the prescribed way of control and power. So in the design of distributor, the first should be based on step motor electric way need to determine the working state of the distributor. Some integrated circuit manufacturers at home and abroad for stepper motor drive system, the type, number and developed application-specific integrated circuit for step motor control, is helpful to reduce the system cost and improve the reliability of system. Foreign representative products include PMM8713 PPMC101B etc. , domestic Beijing automation, mechanical and electronic department and other series of PM stepping motor was designed and developed application-specific integrated circuit. 2. Distributor power amplifier output pulse signal power is small, and the required pulse stepper motor winding current for Abe even more than a dozen Abe, so the dispatcher to send out after the pulse power amplifier must be conducted can diao 'to control the step motor running. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone:
