 |
| |
 Mini brushless
Besides the BS brushless motors, Mini Motor also supplies the relative drives: the Minidrive 300, a digital drive with a PWM system (...)
| |  |
.jpg) Cost-effective IGBTs
The new M Series family of 600V short-circuit rated IGBT/FRED Co-Pack devices by International Rectifier for sub-two-horsepower motor drives offer 18% lower saturation voltage (...)
| | |
.jpg) Digital motor control
The Sensor family of dsPIC™ Digital Signal Controllers launched by Microchip Technology Inc. features the highest processing performance available in an 18-pin package (...)
| | |
.jpg) Linear motors technology
We can describe an asynchronous two-sided linear motor as made up of two primary parts countered, on both sides, with a single secondary part of synchronous or asynchronous type (...)
| | |
 Stepper motors, operation and control
Stepper motors can be divided mainly in two categories: those with permanent magnet and those with variable reluctance. The former consist of a main rotor, usually cylindrical, polarized and placed between stators on which some bobbins are wrapped (...)
| | |
 Types of PWM control
There are basically two types of PWM: the phase chopping and the inhibition chopping. The former acts only upon one of the stepper's A,B,C and D inputs, whereas the latter acts upon all (...)
| | |
.jpg) PWM Control Techniques
To control the current load on the bobbins of a motor (and, consequently, the field they generate), various techniques can be used; it is possible for example to commutate power continuously to the bobbin between two voltages, or, if power to the bobbin is a square wave, its frequency can be changed (...)
| | |
.jpg) Architecture for motor control
International Rectifier has created a unique motor drive power management architecture called AcceleratorTM (...)
| | |
| | | |
Archive
