Topic: Servos & Steppers
Feedback Critical to Machining Precision
Vertical Turning/Grinding Machine Uses Optical and Magnetic Encoders to Aid High-Accuracy Production of Wind Turbine Bearings
Buckle Up With Built in Safety
Machine Builders Include Preventive Safety Early in the Design — And Get Paid Back Sooner
End Users' Needs Inspire Machine Builder's Inventions
Spartanics Celebrates 50 Years Providing Leading Solutions to Customers
Three Specifications, or So, for Motor Choice
Machine Builders Discuss How To Avoid a Nightmare When Selecting Electric Motors
White Papers: In Depth Research
Motion Control System Options Using EtherCAT Technology
Author: Karl Meier, business development for Advanced Motion Controls
This document describes the evolution of motion and control system architectures and what new benefits are realized today when using EtherCAT, whether for a large number of axes or simple systems using just a few. OEMs have many choices available and naturally gravitate to a given architecture in order to speed development and reduce cost. Machine systems, and mainly motion control, are normalized to meet the requirements of the application.
Highlighted too, is not only the rise and acceptance for network connected motion control applications, but also why they are here to stay. In fact, the continued demand for servo solutions like those provided by EtherCAT-based systems will grow faster than most others and come at lower costs to implement.
Feedback Sensors Keep Servo Motors on Target
Author: Gene Matthews, product manager for Kollmorgen
Fundamentally a servo system can perform no more accurately than the accuracy of the feedback device controlling it. In addition, errors in speed or position can be introduced into the system by the less than perfect mechanisms that transfer the motor power to the load. Environmental factors like electrical noise or temperature may also introduce positioning errors. Sometimes the errors are acceptable. More frequently, however, they are not. After all, servo motors can be expensive, and the expectation is that they will be the most reliable and accurate of all positioning devices.
When it comes to high-performance servo applications, feedback devices fall into several different categories. In this white paper, learn how each offers unique advantages and disadvantages, both electrical and mechanical, which make one better suited for a particular application than another.
Motion, Drives and Motors: Usage and Application Trends
An electronic survey of our readers was conducted in February 2013 in order to identify usage and application trends of motion, drives and motors among the industrial machine builders that comprise our readership. In this Market Intelligence Report, you will find detailed survey results with key findings summarized. The survey consisted of the following questions:
1. What types of motors do you primarily use?
2. If you use servo motors are they mostly for digital or analog?
3. If you use steppers are they closed loop or open loop?
4. Rate the importance of these performance characteristics for your drive requirements
5. If you use a digital bus for motion control, which ones do you use?
6. What update rate is required?
7. What is the biggest motion control challenge for you?
Why Pay for More Than You Need?
Author: Dunkermotor Senior Applications Engineer Jay Becker
Today's technology brings servo manufacturers many options when it comes to designing their motor drives and controls. With all the different possible functions that can be implemented in a servo drive, many manufacturers are tempted to pack them all into one "full-featured" product. This can be a problem however for the OEM when it comes time to select the right one for their application. This white paper describes the different levels of capability of Dunkermotoren's servo motor/drives.
- Screw linear rail uses size 17, single-stack or double-stack stepper motor linear actuator and precision rolled 303 stainless steel lead screws.
- Gear reducers have a concentric shaft design with a maximum 5 arc-min backlash rating, Additional features include helical-cut planetary gears and uncaged needle roller bearings.
- iPOS3604 VX intelligent drives, and provides connectors (motor, encoder feedback and I/O signal) for each drive through a CANbus link.
- RS-232 link offers access to all drives, for setup and testing, using a standard PC. It works with dc brushed, (rotary or linear) brushless, or step motors (4x144 W, 4x36 V).
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