Patent ID: 6847862
Filing Date: 2005-01-25
Classification: G05B,Y02P

Abstract:
1. A conveying apparatus for conveying articles, comprising conveying means and control means for controlling operation thereof, said conveying means including: a control shaft; a drive for driving said control shaft; deceleration means provided between said control shaft and said drive; and a position detector for detecting an operation amount of said control shaft and mounted on either of said rotary shaft or said drive, said control means including: a servo control device for driving and controlling said drive based on a movement command from a program; reference encoder value storage means for storing as a reference encoder value an output value from said position detector at an origin of the program; parameter storage means for storing a resolution of said position detector and a rotation ratio of the deceleration means; and command means for changing said reference encoder value of said reference encoder value storage means, wherein said control means further includes computing means in which, in the case that a command is issued from said command means, an encoder value equivalent to a position moving amount commanded from said command means is added to or subtracted from said reference encoder value, and said reference encoder value storage means stores a value obtained by such subtraction or addition as a new reference encoder value.