Novel stepper motor controller based on FPGA hardware implementation

PLC-controlled stepper motor drive for NC positioning system

“…Micro stepping, which is typically used in applications, requiring accurate positioning and fine resolution over a wide range of speeds [6][7][8]. In this paper, a control circuit of stepper motor based on PLC is designed, assembled and experimentally tested for twoaxes, open-loop NC-positioning system.…”

A self-tuning PI controller for the speed control of electrical motor drives

“…HSMs are generally operated in open loop due to their special structure. They are mainly used for simple point-to-point positioning tasks in which they were open loop controlled, and no information on the motor shaft position or speed was used [6].…”

“…Besides, if fast excitation changes are applied, the stepper motor can lose steps and therefore, it fails to move the rotor to the new demanded position quickly and accurately. This would result a permanent error between the actual load position and the required position and, consequently, lose its stability and synchronization [6,7]. Therefore, open loop control of HSMs is insufficient, so closed-loop control is essentially required for high performance applications under parameters variation and load torque disturbances.…”

A new intelligent hardware implementation based on field programmable gate array for chaotic systems

“…Recently, FPGA are becoming more and more popular and are used in many applications such as system modelling, signal processing, fault-tolerant and computing feature extraction [4,5]. FPGA has been successfully utilized in motor control and robotic systems [6,7]. Wen et al [8] introduced analysis of two-phase stepper motor driver based on FPGA.…”