YUNUS EMRE AYDOĞDU (4WEEK)

030050084

Serial Data Communication

Modern sensors have a digital front end for transmitting measured parameters. The signal acquired from the external world is packets of digital data and then serially transmitted. This reduces the amount of cabling required to bringin data from various sensors of a robot’s surroundings. A typical sensor along with electronic s could transmit the acquired signals using one of the many Standard physical layers and protocol standards.

(Rahul Dubey,Introduction to Embedded System Design Using Field Programmable Gate Arrays, 1st Edition, pg102)

Decision Tables for CAPP

Decision tables are tables that are divided by colums and rows.(simple decision table given by source)

Desicion tables are often used in process planning. There are several factors that are to be considered while developing the decision table, such as the accuracy, repetitiveness, consistency, size and completeness of the table, to ensure that the table helps effective decision making. the size of the decision table is important. If a decision table is too large, for example several pages of printing, it is difficult for a human to readand interpret. the discipline may fit a menu-driven interactive computer programme, although this will not only require excessive memory, but will also efficiency of decision making.

the table should contain the actual rules and conditions specified in the design. According to the rule representation, decision tables can be classified as follows:

limited entry decision tables

extended entry decision tables

mixed entry decision tables

(Hong-Chao Zhang,Leo Alting,Computerized manufacturing process planning systems,first edition page 142, 143)

Decision Trees for CAPP

Decision Trees resemble a graph with a root, nodes, and braches. they are used to represent the result of actions. The root is the source of the tree, and each tree has a one single root, however a three can call another sub-tree, for example A DCLASS sub-tree can call up to 25 additional sub-trees. When apply the decision making, the branches carry values/ expressions that can be likened to an IF statement, While the branches in series can be likened to an AND statement. Branches can have only two values - true and false. ıf a branches is true, than it can be passed to next node. Nodes can be classified into excursive and non-mutually excursive (Allen1987). A non-mutually excursive node allows all its successive branches to be true.

(Hong-Chao Zhang,Leo Alting,Computerized manufacturing process planning systems, first edition, pg 143-144 )

Phase Change Materials

Phase-change materials are compounds coated onto carrier materials or substrates, both electrically

insulating and conductive, and then placed between the heat-producing part and the heat sink or

circuit card assembly. The materials are placed under pressure and subsequently heated externally

or self-heated to the material's melting temperature, where it softens and fills all of the interstitial voids

between the parts and the heat sink.

(Charles A. Harper, Electronic Packaging and Interconnection Handbook,Fourth edition, pg 344,345)