Application of Standard Interval Number to Mechanical Error Analysis

Based on the standard expression of interval number and the rules of four algebraic operation of standard interval number,the application of standard interval function was introduced.The standard interval function can deal with some problems that Grey number or interval analysis can't.The solution to standard interval linear equations was researched and the method was used in mechanical error analysis.An example was given,the results of several error analysis method were compared,it is shown that the standard interval function is more effective than interval analysis.