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servo motors
- Posted: March 26, 2015
Reprint of blog p
Ryan Klemetson of Tolomatic on Tue, Mar 24, 2015 @ 08:03 AMMany process industry control engineers are looking to more sophisticated motion control solutions for valve automation. That’s because there’s an ever-growing need to improve productivity, increase efficiency and minimize downtime. It’s essential that engineers be able to control the valves that regulate the flow of materials throughout a facility...
Categories: Technical Support - Posted: November 21, 2013
Achieve precise positioning and high torque at slow speeds without investing in a servo motor, thanks to Galil's integrated high-power (8 Amps continuous), 2-phase drive for closed-loop step motor control. This innovative solution blends the economic advantages of step motors with the accuracy typically associated with servo motors, presenting a viable option for both mechanical and electrical engineers in a range of applications.
Traditionally, automation applications have utilized either step motors, known for open-loop operation, cost-effectiveness, and suitability for high torque, slow-speed applications with moderate positional accuracy, or servo motors, which offer precision control and smooth motion at both high and low speeds through incremental or absolute feedback systems. Servo motors usually require more sophisticated control systems incorporating features like PID filters, making them pricier and more complex to stabilize compared to step motors.
The inherent...
- Posted: August 12, 2013
Often overlooked when sizing DC motors is the Speed-Torque Gradient.
The Speed-Torque Gradeint is defined as Δn / ΔM [rpm/mNm] .
The speed / torque gradient is an indicator of a motor’s performance. The smaller the value, the more powerful the motor and consequently the less motor speed varies with load variations. It is based on the quotient of ideal no-load speed and ideal stall torque.
The speed torque-gradient can be considered a measure of the motor strength, which is defined by motor type and size and not the winding selected. Basically it’s how much speed drop the motor will have for each 1mNm of torque applied.
In the figure below, enhancing the load torque leads to a linear reduction of the speed. Thus it becomes clear what the meaning of Δn/ΔM is: It’s the gradient of the speed-torque line.
...Categories: Technical Support - Posted: January 25, 2013
Reprint of a January 19, 2013 Design World article by Steve Meyer
During the last decade or so the controls industry has adopted the term “Mechatronics” as a replacement for the previously used phrase “motion control”. I will respectfully break with the current trend and suggest that motion control is the proper term because it better defines the field of knowledge.
For one thing, the term “Mechatronics” is a coined word from the folks at Yaskawa around 1969. Look it up if you don’t believe me. It has taken Yaskawa a long time and a lot of effort...Categories: Technical Support