A choke is a passive device that adds inductance to a circuit. Inductance is a property of a coil of wire that resists any change to the current flowing through it. (Straight wires also possess a small amount of inductance.) In other words, if current through the coil increases, the magnetic field of the coil […]
POSITAL-FRABA multi-turn hollow shaft kit encoders — Rockwell Encompass Complementary Products
POSTIAL-FRABA’s new hollow-shaft kit encoders are now a complementary product in Rockwell Automation’s PartnerNetwork Encompass program. These new products mark a significant innovation for industrial motion control. Until now, almost all through or hollow-shaft encoders have been limited to a single-turn measurement range, largely because fully satisfactory multi-turn technology has been not been available. POSITAL […]
Finalists announced for Motion Control category of LEAP Awards
Finalists were announced on November 5th for the second annual LEAP Awards Motion Control Category. The competition was scored by a panel of independent engineering judges. Below are descriptions of these worthy Motion Control finalists. The overall winner will be recognized at a ceremony in Santa Clara, Calif. in conjunction with the Healthcare Robotics Engineering […]
What is a constant voltage drive for a stepper motor and when is it used?
There are two fundamental types of stepper motor drives: constant voltage drives, which supply a fixed voltage to the motor, and constant current drives, which manipulate voltage to ensure that a constant current is delivered to the motor. Stepper motor electrical basics The most fundamental equation governing the behavior of a stepper motor is Ohm’s law, […]
Efficient integrated gearmotors power intralogistics application
The intralogistics industry is a fastest-growing market — and one motion-component supplier aims to address the industry’s unique needs. “Three of the world’s top five material-handling suppliers use NORD drive technology, and we have long-term supply agreements with two of the suppliers,” says NORD Gear Corp. president and CEO Torsten Schultz One solution for intralogistics […]
White vinegar lines employ dry-lubrication and other conveyors
Rising demand for white vinegar recently prompted French condiment and seasoning company Charbonneaux-Brabant to install a Sidel PET line in their new Vauvert production plant. There the company bottles white vinegar in 1 and 1.5-l formats in a flexible operation that continuously changes to satisfy supply chain and distribution demands. In fact, growing use of […]
What really limits gains in a servo system?
Understanding the real factors limiting servo gains, and system performance, makes it easier to devise counteracting strategies. Curt Wilson • Vice President of Engineering • Omron Delta Tau Here’s a piece of conventional controls wisdom – if you want to increase system performance, raise the gains. For non-specialists in industry who are trying to optimize […]
Bosch Rexroth launches GoSelect online ordering tool
Bosch Rexroth now offers design engineers GoSelect — a new online ordering tool designed to streamline product selection and simplify cost quoting. The user-friendly interface offers pricing and availability on hundreds of products. Users can instantly download CAD drawings which come in a variety of formats, including PDF3D, STEP, IGES and DXF. An intuitive filter […]
What is a sine encoder (aka sine-cosine encoder)?
A sine encoder is similar to an incremental encoder in design and function. Both devices measure either rotary or linear position changes and direction, and both are available with either optical or magnetic sensing technology. The primary difference between the two is that sine encoders supply position and direction information as 1 Volt peak-to-peak (1 […]
How are fast Fourier transforms used in vibration analysis?
Fast Fourier transforms are mathematical calculations that transform, or convert, a time domain waveform (amplitude versus time) into a series of discrete sine waves in the frequency domain. Machine vibration is typically analyzed with measurements of the vibration frequency, displacement, velocity, and acceleration. The latter three — displacement, velocity, and acceleration — are time domain […]
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