英语翻译别用那些垃圾软件翻译出来骗我啊,不然会删贴的.急用A typical car door is assembled

英语翻译
别用那些垃圾软件翻译出来骗我啊,不然会删贴的.急用
A typical car door is assembled by welding an inner panel,
outer panel,reinforced panel,gemel fixed panel and an
additional panel.In this welding process,about 15 to 30
welding points are needed,and about ten locating and
holding points are needed [7].Door dimensional errors influence
the matching of the door and door framework,
which often cause uneven gaps between the door and framework,
uneven height of the surface between the door and
framework,as well as difficulties in opening or closing of
the door,or loose closing if the up and down holes of the
fixed gemel are not concentric.These quality problems
have troubled car manufacturers for a long time,and are
key study subjects of auto-body manufacture quality control.
A rationally designed checking fixture for car doors is
important to ensure manufacturing quality.For checking
fixture design,correctly selecting the checking fixture type
according to the checking features is the first step.Different
checking features of a car door may need a different checking
fixture type,because the route of checking some features
may pass other features; thus,it is impossible for
checking all features of a car door with one checking fixture For example,a checking fixture used for measuring the
concentricity of up and down gemel fixed holes of the door
is not the same as a checking fixture used for measuring the
surfaces of the door and door framework.So for specified
checking features of a car door,the approach of STNNCF
applied to selecting type of checking fixture is feasible.
A car door is showed in Fig.2.Concentric parameters
and data in a coordinate system need to be measured.
Referring to Table 1,a part feature’s vector as an input of
STNNCF is (0,1,0,0,2,1,1) according to the specified
checking requirement and workpiece features.After training
STNNCF with examples generated from the performance
matrix in Table 3,automobile door checking fixture
type is selected by the trained STNNCF.The output of
STNNCF is close to an ideal output vector (1,0,0,0),which
means that a measuring fixture is selected.This result is the
same as the solution of the human designer.

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