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MOTION CONTROL FEATURE


rear housing or otherwise attached to the motor itself, and offer most of the performance of a full servo system, although restricted bus voltages may limit speed a little. Integrated servo motors eliminate some cabling and simplify setup, making it much easier for technicians new to servos to get a system up and running sooner. Pairing the motor selection and the


Figure 3: Many of today’s motors rely on closed feedback loops that monitor the motor position against its target position and make constant course corrections


speed of the drives and feedback devices which make fine adjustments quicker than previous drives could do. Today, it is possible to get more work done with a smaller, more compact, motor. Some modern actuators, for example, come


integrated with pre-mounted and pre-tested servo motors. These have a drive built into the


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actuator selection also simplifies the ordering process; reduces the need for additional after-installation validation; increases reliability; and simplifies maintenance, reducing the total cost of owning and operating an actuator system. Because pre-mounted servo motors must be limited in size, they may not be appropriate for applications requiring larger systems. Although precision linear actuators with integrated servo motors do tend to be on the smaller side, large actuators with integrated servo motors are available.


TECHNOLOGY ADVANCES As motor system technology advances, it will play an increasingly important role in manufacturing strategies. Modern drives will likely have internet connectivity and communicate with popular communications interfaces and protocols such as Ethernet, ProfiBus and CAN bus. Furthermore,


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motors will be more accessible and configurable across plant networks, making it easier to control and configure existing applications, while delivering visualisation that could suggest new productivity and cost-saving applications.


Thomson www.thomsonlinear.com


Online product tools can also assist with the selection of the right motor. For example, Thomson Industries


designed LinearMotioneering (www.linearmotioneering.com), an online tool that facilitates fast and easy linear motion system sizing and selection, enables accurate motor sizing mounting, and features advanced ordering technology. Also available is MicronMotioneering (www.micronmotioneering.com), another online tool to easily size and select a precision, planetary gearhead along with a motor and motor interface.


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DESIGN SOLUTIONS | JULY/AUGUST 2019


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