Page 78 - basic control system
P. 78

STATIC ERROR



                                COEFFICIENT METHOD









                           RAMP INPUT




                           ❑ Reference input is ramp of magnitude ‘A’:



                                         
                                 =
                                          2



                                                      (  )
                                    = lim
                                        →0 1 +         (  )

                                                        
                                                    ( )
                                                       2
                                 = lim                 
                                        →0 1 +         (  )
                                                          
                                 = lim
                                        →0   [1 +             ]

                                                     
                                 = lim
                                       →0   +               ]
                                 =            
                                    lim            (  )
                                       →0


                           ❑ Kv =                   (  ) = Velocity Error Coefficient
                                            →  


                           ❑ The corresponding error is:
                                                
                                     =
                                        
                                                 















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