Abstract: A robot control apparatus and a control method for moving a tool along a synthesized trajectory where at least two operations are synthesized in the middle of a desired trajectory. Control positions for a preceding operation and those for a succeeding operation are calculated from initial to terminal values, respectively. With a requirement that initial values for the succeeding operation be matched to terminal values for preceding operation, target control positions at a predetermined time for an actuator in a section where a tool is moved along the synthesized trajectory are calculated on the basis of values obtained by adding values of a difference between the predetermined time and a previous time for the preceding operation to values of a difference between the predetermined time and the previous time for the succeeding operation, and the actuator is controlled such that calculated target control positions are attained.

Abstract: A robot control apparatus and a control method which, in moving a tool along a synthesized trajectory where at least two operations are synthesized in middle of a desired trajectory, eliminates the need for arithmetic processing for determining synthesized trajectory, thereby drastically shortening processing time required for preprocessing for robot control. Control values for preceding operation and those for succeeding operation are calculated from initial to terminal values, respectively.