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Ansoft Designer / Ansys Designer 在线帮助文档：

Design Verification >
   Design Verification Commands >
       Geometry Checking Commands >
           NotchTo Commands                

NotchTo Commands

This section describes the following NotchTo commands:

• NotchToErrors

• NotchToPolygons

• NotchToEdges

Input: DV layer (containing polygons)

           Constraint (operator and positive real number)

           Measurement region qualifier (optional)

           Orientation Qualifiers (optional)

           Adjacent Edge qualifier (optional)

           Raw/Merged qualifier (optional)

Output: DV layer – Type varies with the command. NotchToErrors outputs a DV layer containing error clusters. NotchToPolygons outputs a DV layer containing polygons. NotchToEdges outputs a DV layer containing edges.

Description: Checks notch width of individual geometry. Notch width is the distance between facing, outside edges on the same geometry. This is an edge to edge check, not corner to corner, or corner to edge.

Edges are considered to face each other for notch checking only if the angle between the outsides of the edges is less than 180 degrees. Collinear edges are not considered facing.

Angles between outside edges:

The arrows in the figures below indicate the edge pairs that are checked when using default orientation and adjacent qualifiers: Acute Also, Not Obtuse, Parallel Also, Not Perpendicular, and Not Adjacent.

• NotchToErrors results are clusters of segments that meet the specified constraints. Each error segment indicates the portion of the geometry edge that meets the constraint. The error clusters are returned in a DV layer. The heavy lines in the illustration that follows show the portions of edges that are returned as one error cluster.

• NotchToPolygons results are polygons that have at least one edge pair that meets the specified constraints. The polygons are returned in a DV layer. The entire polygon in the following illustration is returned.

• NotchToEdges results are segments of edges that meet the specified constraints. These segments retain information about the polygon they were created from. This information allows the edges to be used as input to other DV commands. The segments are returned in a DV layer. The heavy lines in the illustration that follows show the segments that are returned as edges. They are not clustered. They retain information about the directions inside and outside of the polygon and sibling relationship.

The constraint amount may be given with or without units. If no units are specified the current default length units are used.

Supported operators:

          <   Less than

          <= Less than or equal to

          == Equal to

          >   Greater than

          >= Greater than or equal to

Qualifiers may be specified to constrain the edges checked. The defaults, if qualifiers are not specified, are Round (measurement region), Acute Also, Not Obtuse, Parallel Also, Not Perpendicular, Not Adjacent, and Merged (geometry).

Example (JScript):

var layer1 = DVChecker.ImportLayer("trace");

var notchLayer1 = DVChecker.NotchToErrors(Array("<", 5), layer1,

Array("Round", "Acute Also", "Not Obtuse", "Parallel Also", "Not Perpendicular",

"Adjacent Also", "Merged"));

DVChecker.SaveLayer(notchLayer1, "notch errors", "notch < 5 on trace layer");

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