Anatomy of a Robot Part 4 pps

... title: 0-07 -14 1657-9 All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion ... the selection and design of robotic software. The chapter outlines a coordinated approach to the selection of a processor, a battery, a power supply, operating software, a...

Ngày tải lên: 10/08/2014, 01:22

... Nov'00 Nov'00Nov'00 Nov'00 Dec'00 Dec'00Dec'00 Dec'00 Jan'01 Jan'01Jan'01 Jan'01 2 9 16 23 30 6 13 20 27 3 10 17 24 1 8 15 22 29 5 12 19 26 3 ... (respin) Fabrication Assembly Debug Embedded Software Embedded SoftwareEmbedded Software Embedded Software 7/ 12 10 /27 10 /27 7/ 12 9/ 129 / 12 8/30 10 /24 10 /24 7/ 12 10/...

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... THE ROBOT S DESIGN PARAMETERS We have already seen that altering v and d can substantially change the performance of the robot. Further, altering these parameters offers a reliable way to change ... all the parts of the robot. The robot might rip off a vital part if it accelerates too fast. More on this later. ■ Mechanical wracking The robot will change shape as it accelerat...

Ngày tải lên: 10/08/2014, 01:22

... companies have probably written software that takes advantage of the special features of the computer. We can purchase this software and use it in various ways: ■ Freeware Often an author of software ... tech- nology available for our use. We gain time, dollars, and reliability by sharing and taking advantage of their effort. Because the technology has been made so readily available t...

Ngày tải lên: 10/08/2014, 01:22

... computations at a faster rate. To take advantage of this capability, we often have to take a very close look at the software and the compiler (if one exists). Often, a compiler will automatically avoid ... speed). PCI has become an industry standard. Many board manufacturers and many chip manufacturers have adopted it. If the robot s computer supports the PCI bus, many third-party bo...

Ngày tải lên: 10/08/2014, 01:22

... recorded are more than sufficient to allow a proper read of the data. ■ Bad disk surface HDs also have a mechanism to avoid bad spots on the disk surface. A separate place exists in the HD surface ... MTTF of a large PCB, for instance, perform the following steps: 1. Obtain the Bill of Material (BOM) for the board, the list of parts, and the quan- tity of each. 2. Make a s...

Ngày tải lên: 10/08/2014, 01:22

... require 0.817 watt-hours of energy and the battery can contain 1.8 watt hours. We have a margin of about 2 to 1. That’s not too bad, hauling a robot the size of a 12-year-old boy up a long ladder with ... software. What advantages accrue to the design team? First of all, we will only need standard rechargeable batteries as sold in the store. We will not need special batterie...

Ngày tải lên: 10/08/2014, 01:22

... to put away all the volatile data that will be lost during the power failure. Flash memory, battery- backed Random Access Memory (RAM), and disks are all good places to put the data. Once a PFD ... coordinated. An alternative is to use a commonly available clock such as one transmitted by GPS satellites that is avail- able all over the world. SOME NOTES ABOUT SPY-HOPPING Spy-hopping is ba...

Ngày tải lên: 10/08/2014, 01:22

... the robot s existing motion. ■ Pad brakes Regular friction brakes of all sorts are available too. We’ve already discussed ABS brakes and the various forms of braking actions (manual and auto- matic). ... circuit for anything other than an antialias filter. Given our example of a system with a 40 db S/N ratio, and using this particular cir- cuit as an antialias filter, we can see wh...

Ngày tải lên: 10/08/2014, 01:22

... data is already available, but the data rate does not match the rate needed in a specific application. A specific example might be a digital video signal coming in at a full broadcast rate. At 270 ... http://members.ozemail.com.au/ϳtimhoop/intro.htm D /A Effects: Sinc Compensation At the output of the DSP system, the D /A generates an output stream of analog values. The D /A on...

Ngày tải lên: 10/08/2014, 01:22

... gain may be needed and the data rate can go up. If the satellite link has a high No, then a stronger coding gain may be needed to maintain the quality of the data at the expense of a lower data ... like aspirin bottles that come with a safety seal that ensures protection, data can be wrapped in a checksum that will guarantee the integrity of the data. A checksum is a serie...

Ngày tải lên: 10/08/2014, 01:22

... concentrated bursts. An interleaver takes adjacent data and moves them apart, much like a deck of cards is shuffled. The data is not expanded, just rearranged. The encoder can interleave the data before ... state changes is accumulated back a few cycles. ■ Outputs data As the decoder state machine changes states, it triggers an exam- ination of the historical state change data. If the...

Ngày tải lên: 10/08/2014, 01:22

... information. Infrared Data Association (IRDA) The Infrared Data Association (IRDA) standard link is an infrared channel that has been around for some time. It uses infrared light for short-range communications ... too fast for software encryption, hardware chips are available that can encrypt the information faster. Popular encryption standards are listed at www.cs.auckland .ac.nz/ϳpgut001/li...

Ngày tải lên: 10/08/2014, 01:22

... find a similar part of roughly the same shape and extrapolate the parame- ters. Here’s one example. Suppose you want to know the compression strength of an L-shaped beam made of a specific type of ... thermal impedance calculations: ■ http://sound.westhost.com/heatsinks.htm#asample%20calc ■ www.hardwarecentral.com/hardwarecentral/tutorials/743/1/ ■ www.hardwarecentral.com/hardwa...

Ngày tải lên: 10/08/2014, 01:22

Ngày tải lên: 10/08/2014, 01:22