mechatronic-design

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The straight story on linear actuators 

Linear actuation is employed everywhere, for packaging, life sciences, transportation, and factory automation jobs. Pneumatic and hydraulic linear actuators operate on pressure differentials; electromechanical actuators are either linear motors or rotary motors driving a screw or belt. The selection and use of these technologies is greatly influenced by the user's technical knowledge, the project's budget, energy sources, and performance tradeoffs....

Anticipating every move 

Digital motion control is boosting output on everything from high-end machining centers to simple signmaking devices. But often, these systems aren’t used to their full dynamic capacity, because tight corners and sudden stops are too much of a challenge to navigate safely, within machine limits...

Intelligence moves from controllers to drives 

Many designers wish to convert from central to distributed machine control. They have good reasons: Distributed (or decentral) control maximizes communication, handles additional axes concurrently, and lightens the processor's load. It accomplishes these tasks by dividing responsibilities among all drives and implementing real-time Ethernet communication. In turn, networks accommodate a larger number of synchronized axes. ...

Conveyer application determines control approach 

Typically, conveyors fall into two main camps: synchronous and nonsynchronous. Synchronous conveyors provide indexed movement of parts or products from station to station along a fixed path and at a fixed rate. They are usually automated and run quick cycles. Cycle rate depends on the slowest process in the system...

Boosting precision and accuracy 

Even if you could mathematically model systems exactly, the physical world is too messy — has too many variables — to flawlessly produce paths described by clean, exact equations. Nonlinear friction, noise, vibration, and various forms of backlash color all machine motion. But machine accuracy and precision are getting better all the time, making for improved positioning and increasingly defined motion...

Intelligent drives for increased safety 

Motion-based machines are running more axes at higher speeds and faster accelerations. This creates a demand for machines that move safely and that also satisfy regulations and competitive pressures...

Optimizing reciprocating motion 

Think of reciprocating motion, and cams those kings of kinematic linkages may come to mind. For good reason: Cams have been the traditional gold standard for reciprocating motion since the dawn of industrialization. Even today, modern varieties (designed with software for sophisticated speed and acceleration motion curves) can outpace fluid power and electrical systems on response time. In fact, when a fixed system is acceptable, cams can be the best way to maximize cycles. ...

Bearings under oscillation 

Grease both lubricates and keeps contaminants out of bearings. But its job is often made difficult by back-and-forth, or oscillatory, motion. Printing presses are a classic example: Frequent returns to home coupled with short advances can wreak havoc on lubricants as well as the seals that protect them...

Leisurely linear actuation 

With these tips and tactics, achieving slow motion is a walk in the park....

Motor Basics 

The wide range of electric motors can be a confusing topic even without considering intelligent motor control. This brief overview is for those who think motors are only divided into two categories: ac or dc....

Smart Motion Makes For A Smarter Design  

If it moves, jumps, rotates, or vibrates, it usually contains a motor. Electric motors come in all types of devices, from tiny hard-disk drives to hybrid vehicles to locomotives....

Mechatronics: Principles and Applications 

Motor control is one of those wonderful digital/analog topics that has become more important in embedded development with the increase in microcontrollers targeted at this space as well as a competitive demand for more sophisticated solutions....

Designing with time to market in mind 

The pressure is always on to get products to market faster. What should you know about reducing time to market? Motion System Design talked with Bosch Rexroth's Richard Rey, Electric Drives & Controls, and Kevin Gingerich, Linear Motion & Assembly Technologies, to find the answer to this and other questions...

World in Motion 

As often happens in the world of scientific advancements, engineering teams at two separate companies were working on the same concept at the same time — the idea of a sensor-activated, hands-free paper towel dispensing system. When Georgia-Pacific acquired Fort James in 2000, teams and ideas were combined after the merger to develop the final product....

Juggling many functions 

These days, everything from hand soap to candy bars comes in multiple versions. Behind all this variety are smart manufacturing plants that have the ability to collect, move, and package products into multiple formats...

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