Abstraction

Abstraction III transforming quantitative data into qualitative data is important. From this third abstraction, it can be concluded that the desk is desired:
a. A workbench can dinaik-down.
b. Proportional size
c. Convenient to use
d. Meet the criteria of beauty.

3.2.3.3 Abstraction IV Work Tables
On abstraction IV is a step further by formulating abstractions III to the more common form. The result is a workbench IV abstraction that can dinaik-down height, with a proportional size and comfortable to use and meet the criteria of beauty.

Work Table V 3.2.3.4 Abstraction
On Abstraction V is lamgkah neutralize the whole problem by formulating the task becomes free solution.
Results Abstraction Work Table V is the sizes that meet the standards required of industry.



3.2.4 Function Structure
The structure function is defined as the general relationship between input and output of an engineering system that will run a particular task, while the overall function is the usefulness of such a device .. Overall function is then elaborated into several sub-functions that have a lower difficulty level. So that the sub function is a task to be executed by the components that make up these tools. Concatenation of multiple sub-functions to perform an overall task is called the structure functions.
The objective function is a set structure to obtain a clear definition of the existing sub-systems so that could be elaborated separately.

3.2.4.1 Overall Function
This function is depicted with a block diagram showing the relationship between inputs and outputs where the inputs and outputs in the form of energy flow, material and signal.




Figure 3.1 Structure of Entire Functions
Description:
Ei: Energy Input
Si: Input Signal
Mi:
Eo: Energy Output
So: Signal Output
Mi:

3.2.4.2 Sub-Structure Function
The structure of the overall functions contained in Figure 3.1 is still not clear, so it needs to be clarified again by decomposing into subfungsi which can be seen in the image below:

Energy



Table



Figure 3.2 Sub-Structure Function

3.2.5 Principle Solutions for Subfungsi
Once created the overall structure and function along with subfungsinya, we then searched the principles of a solution to meet these subfungsi. The method to be used in finding a solution principle is a combination of methods, namely methods that combine all existing solutions in the form of a matrix.

The principle of the solution sought as much as possible, but the principles of these solutions were analyzed again, where the principle of less useful solutions can be eliminated or ignored in order in the next stage of the design concepts are not too many concepts that must be evaluated again.












3.2.6 Combining Principle Solutions
Once the principle subfungsi solution is created, it needs to be combined to form a mutual support system. Combination of solution principles will be divided into several variants that can be seen in the table below:

Table 3.3 Combination Principle Subfungsi









From the result of a combination of solution principles contained in Table 3.3 yielded the following variants:
o Variant 1: 1.1 - 2.2 - 3.3 - 4.2 - 5.2 - 6.2
o Variant 2: 1.1 - 2.2 - 3.3 - 4.2 - 5.2 - 6.2
o Variant 3: 1.1 - 2.2 - 3.3 - 4.2 - 5.1 - 6.2
o Variant 4: 1.1 - 2.2 - 3.3 - 4.2 - 5.1 - 6.2



3.2.7 Selecting the Best Combination
At this step will be selection against variants contained in Table 3.3
Selected variant is a variant ... ...
To be considered in making the module structure (Varian concept) is that the structure of these modules can be realized by considering the overall function of safety, ergonomics, aesthetics, etc..










Fig. 3.2 Structure Function




3.2.8 Finding and Selecting Solutions For Every Subfungsi
Each subfungsi on the structure functions must be sought solutions. From the solutions can be made Table 3.3 below:













3.3 Determining Variant Concept
3.5.1 Combining Principle Solutions
The principle solution is obtained combined into overall solutions with the help of the above classification scheme. With the principles of the solution obtained by some combination or variation:
o Variant 1: 1.1 - 2.2 - 3.3 - 4.2 - 5.2 - 6.2
o Variant 2: 1.1 - 2.2 - 3.3 - 4.2 - 5.2 - 6.2
o Variant 3: 1.1 - 2.2 - 3.3 - 4.2 - 5.1 - 6.2
o Variant 4: 1.1 - 2.2 - 3.3 - 4.2 - 5.1 - 6.2



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