11: A MIXED QUALITY ASSESSMENT METHOD

Lecture questions:

1. The essence of the mixed method

2. Sequence of actions

with a mixed level assessment method

quality

3. Formulas for calculating the level of quality

1. The essence of the mixed method

In assessing the technical level and quality of complex and

Mostly multifunctional technical products

apply a mixed method based on joint use

the definition of differential and complex evaluation methods.

Mixed method of assessing the quality of technical

products are used in cases where single indicators

There are a lot of properties, they are diverse, and the analysis of

each indicator is difficult, which makes it impossible

make a summary of the quality and technical level

products.

2. Sequence of actions

with a mixed method of assessing the level of quality

The essence of the mixed method and the sequence of actions

vii consist in the fact that:

1. All or part of the unit indicators of the properties of the

ny in groups for which define group (complex-

ny) indicator. Combining single indicators into groups

depends on the purpose of quality assessment: during the project

tirovaniya and design products, in the manufacture and on

different stages of operation. The most significant and character-

individual indicators can not be included in the group, and

watch them along with the group.

2. The numerical values ​​of the obtained group

(com-

complex indicators and self-reported units

indicators are compared with the corresponding baseline

indicators, i.e. apply the principle of differential

assessment of the totality of the properties of products.

3. Formulas for calculating the level of quality

In the mixed method, the assessment of the quality level of technical

sky products calculated by the formulas:

n

P

Q

n

P

K

iоц

ots

iоц

a

ots

Y

/ n



or

Y



m



A

,

k



k



i

i1

P

ibaz

Q

bases

i1

P

ibaz

K

a

bases

or



R



 A

j

jgr.ots

n

P

K

iоц

g

ots

j1

Y





m



A

or

Y



,

k

i

k

i1

P

ibaz

K

g

bases

T a





R





j

jgr.baz

j

1

where n is the number of individual indicators counted independently;

m

i

- the weight coefficient of the i- th single property index

va;

R

jgr

- a complex indicator of a group of properties;

A is the weight coefficient of one property group;

A

j

- the weight coefficient of the j -th group of indicators of properties

( j

= 1, 2, 3 ..., T );

T is the number of property groups.

Indicator

Y

obtained by the mixed method of

k

quality of products, is a generalized and complex

lex simultaneously