A linear variable differential transformer (LVDT) is an absolute measuring device that converts linear displacement into an electrical signal through the principle of mutual induction. Its design and operation are relatively simple, providing extremely high resolution in a device suitable for a wide range of applications and environments. The main components of an LVDT are […]
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Chip-level connectivity and design sees synergies for motion and robotics
In a recent interview with Brendan O’Dowd, general manager for industrial automation at Analog Devices, we got the chance to hear about new devices — even to the chip level — that allow better integration of robotics into motion designs and machines for automation. Eitel • Design World: We cover motion control as it relates […]
Motion sensors at core of home-therapy tool to retrain brains
Now, a wearable device called the FitMi from Flint Rehab is helping people with neurologic injuries (from strokes and other brain injuries) improve their strength and dexterity. FitMi contains two wireless pucks and a therapy app that picks exercises tailored to the patient’s stage of recovery. As he or she improves, the FitMi exercises and difficulty […]
Difference between continuous ratings and holding continuous loads (an ac servo-motor terminology primer)
For applications primarily needing the holding of a load with little movement, there are special servo-motor sizing considerations. But confusion often arises from the terminology used to describe such designs — especially from the common use of the term stall in the servo-motor industry. Here we clarify the definition in context and then relate it […]
Programmable encoder saves a tradeshow demo for a robotic-gripper manufacturer
Just before the recent Pack Expo 2018 in Chicago, Soft Robotics Inc., manufacturer of soft robotic gripping and automation solutions, had a brand-new show-demonstration workcell go down. That prompted one of the company’s engineers to reach out to Encoder Products Co. exhibiting in another McCormick Place hall to get the demo working again. “We had […]
What are chain-on-edge conveyors and where are they used?
Conveyors are the backbone of many factories, moving parts and materials through assembly or processing stations via chains, rollers, belts, or pallets. Most conveyor designs hold the part stationary, in a given orientation, as it moves down the line. And in many processes, maintaining a fixed orientation is important — when a part is being […]
Control Techniques announces new servo drive
Control Techniques, part of the Nidec group of companies, has revealed its new generation of advanced servo drive technologies. The new Digitax HD servo series delivers ultimate motor control performance and flexibility from a uniquely compact package. Targeting high axis count automation systems, Digitax HD provides all of the benefits of a modular system with […]
What is meant by the term General Motion Control?
There are numerous interpretations of what the motion control market entails in terms of products included and industries served, but there are some commonalities among the various definitions. First, a motion control system includes at least three basic components — a motor, a drive, and a controller. Second, motion control systems are primarily used in discrete […]
New drum motor and new hygienic solutions from Interroll at PackEXPO 2018
The Interroll Group, the leading global provider of material flow solutions, will introduce new products and solutions to the Americas region at PackEXPO at McCormick Place in Chicago from October 15 to 17, 2018 (Booth E 10300). One of the highlights will be the new generation of drum motors, which Interroll is now expanding with […]
Bodine’s SCR-rated PMDC gearmotors — for hybrid applications
To provide greater flexibility and compatibility with unfiltered SCR controls, Bodine Electric Co. now offers a new selection of 90-V and 180-Vdc gearmotors with a rated maximum armature speed of 2,500 rpm. These gearmotors are designed for “hybrid” applications that neither match the 90-V 1,725-rpm industry standard (for operation with unfiltered speed controls) nor Bodine’s […]