3. HIERARCHICAL CONSTRAINT SOLVING IN PARALLEL 

Constraint Hierarchy 

    

  1. Introduces various strengths of constraints 

  2. Important in synthesis problems 



Features 

Solving Constraint Hierarchy in Parallel by GDCC using the Block Mech-
anism 

    

  1. We show how to solve constraint hierarchy by the block mechanism. 

  2. We show speed-up by parallel execution on Multi-PSI. 



System Architecture 



P.106 Figure 1


Demonstration: Gear-Box Design 



P.106 Figure 2

Four-Speed Three-Axis Gearbox 


We specify the sum of the two intervals between axes and output the speed 
ratios, each of which is produced by combining two meshing pairs. We assume 
that there are standard radiuses of gears which take discrete values. We decide 
each gear radius so that standard gears can hopefully be used as many as 
possible. 


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