Angular velocity and position control of a permanent magnet stepper motor

2003 ◽  
Author(s):  
R. Castro-Linares ◽  
Ja. Alvarez-Gallegos ◽  
E. Alvarez-Sanchez
Keyword(s):  
Angular Velocity ◽  
Permanent Magnet ◽  
Position Control ◽  
Stepper Motor

Application of PLC Pulse Command in the Step Motor Position Control

2011 ◽  
Vol 130-134 ◽  
pp. 3954-3957
Author(s):  
Liu Wei
Keyword(s):  
Motor Control ◽  
High Speed ◽  
Position Control ◽  
Step Motor ◽  
Stepper Motor ◽  
Equipment Selection ◽  
Stepper Motor Control ◽  
Key Issues ◽  
Pulse Output

Mitsubishi FX2n series PLC's CPU module comes with high-speed pulse output channels. Using these channels, you can achieve position control of stepper motor. This article describes the use of high-speed pulse output instruction on the stepper motor control to achieve the design points. Contents include: key issues of PLC equipment selection, use of pulse command, and the stepper motor selection and setting.

Investigation of Vial Position Controls for the Development of a Cave Auto-Sampler

2018 ◽  
Vol 884 ◽  
pp. 86-92
Author(s):  
Raul Jangali ◽  
Shen Hin Lim ◽  
Adam Hartland
Keyword(s):  
Position Control ◽  
Power Saving ◽  
Gear Ratio ◽  
Stepper Motor ◽  
Sample Collection ◽  
Drip Water ◽  
Airtight Container ◽  
Arduous Task ◽  
Stepper Motors ◽  
The University

Researchers at the University of Waikato visit caves on a periodic basis to collect samples of drip water, which over geological timeframes form stalagmites and other formations. However, most caves are remotely located, which makes it an arduous task to reach the study site and is economically unfeasible for frequent visits. This paper presents the position control aspect of the cave auto-sampler, which is a crucial operation to store water samples in an airtight container. The primary challenge was to position airtight sample vials under the needles for sample collection, within 3.5mm from the centre of the silicone septa. Various methods and makes of stepper motors were tested to find the balance between precision and power saving. A high gear ratio stepper motor was chosen as the primary drives due to its high precision and its ability to hold position when power is turned off between operations. Testing in lab conditions showed satisfactory consistency regarding position control and is integrated into the auto-sampler.

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