By Douglas W Jones; University of Iowa. Dept. of Computer Science

Show description

Read or Download Control of stepping motors : a tutorial PDF

Best diy books

Download e-book for kindle: The Complete Guide to Greenhouses & Garden Projects (Black & by Philip Schmidt

One of many most popular shopper tendencies is the recent significance on open air residing, and not anything brings the outside domestic to real looking a greenhouse and different components to aid develop and nurture panorama greenery. This publication has plans and step-by-step for developing and appointing greenhouses of a number of forms, from glass-wall to hoophouse; a few from kits, a few from scratch; additionally comprises plans and steps for different backyard constructions and add-ons.

Download e-book for kindle: Life Skills: How to Do Almost Anything by Chicago Tribune Staff

How do you supply an excellent marriage ceremony toast? How do you repair a clogged drain? How do you bowl with no hurting an individual? Questions like these—some hugely functional, others wildly funny—make up this enticing home made advisor. amassed from the preferred function how-to columns within the Chicago Tribune referred to as "Life Skills," this publication is full of frequently funny directions on appearing projects that many people have by no means gotten round to knowing, or that we've continually puzzled approximately.

Read e-book online Black & Decker The Complete Guide to Plumbing (6th Edition) PDF

Chances are you'll now not need to name a plumber; get the main accomplished, updated ebook on domestic plumbing for DIYers of all ability degrees instead!

From solving a tap to fitting a drain line in a basement flooring, The Black & Decker whole consultant to Plumbing sixth version has the reply to any domestic plumbing challenge you're more likely to have. choked with transparent colour images and easy-to-understand descriptions, the fundamentals of domestic plumbing structures are basically defined, and the entire hottest plumbing tasks are proven with attractive step by step photos.

This re-creation has been completely up to date to make sure that all details conforms to the latest codes, together with the 2015 Uniform Plumbing Code and the 2014 foreign Residential Code. New initiatives contain plumbing and tiling a curbless bathe. different positive aspects comprise initiatives to advertise accessibility within the rest room; up to date toilet air flow that includes new items; and an extended part on external plumbing, together with swimming pools, pumps, and sprinkler structures.

Download PDF by : Maximum PC (June 2016)

Evaluate: greatest notebook: machine information, experiences, and How-to initiatives. greatest computing device is the journal that each machine geek, laptop gamer, or content material writer may still learn each month. each factor is jam-packed with punishing product stories, thorough how-to articles, and the illuminating technical information and knowledge that laptop energy clients crave.

Extra info for Control of stepping motors : a tutorial

Example text

The risk of burning out the motor is quite real, as is the risk of demagnitizing the motor rotor if it is turned against the imposed field while running hot. Therefore, if a dual-voltage supply is used, the temptation to raise the torque in this way should be avoided! The problems with dual voltage supplies are particularly serious when the time intervals are under software control, because in this case, it is common for the software to be written by a programmer who is insufficiently aware of the physical and electrical characteristics of the control system.

2 illustrates the effect of increasing the resistance and the operating voltage on the rise and fall times of the current through one winding of a stepping motor. 1 because it is particularly useful there. For a bipolar H-bridge drive, when all switches are turned off, current flows from ground to the motor supply through R1, so the current through the motor winding will decay quite quickly. In the unipolar case, R2 is necessary to equal this performance. 1 are opened, the direction of current flow through R1 will reverse almost instantaneously!

Note that all power switching chips are potentially serious sources of electromagnetic interfence! The 47µF capacitor shown between the motor power and ground should be as close to the chip as possible, and the path from the SENSE pin through Rs to ground and back to a ground pin of the chip should be very short and with a very low resistance. On the 5 volt side, because Vref is taken from Vcc, a small decoupling capacitor should be placed very close to the chip. It may even be appropriate to isolate the Vref input from Vcc with a small series resistor and a separate decoupling capacitor.

Download PDF sample

Control of stepping motors : a tutorial by Douglas W Jones; University of Iowa. Dept. of Computer Science


by Kenneth
4.0

Rated 4.83 of 5 – based on 10 votes