The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2002
Filed:
May. 17, 1999
Mitsuaki Adachi, Aichi, JP;
Okuma Corporation, Aichi, JP;
Abstract
The present invention provides a position control apparatus in which a motor output torque can be approximated to that of the maximum output torque curve of the motor by generating a position command combining constant acceleration and exponential acceleration. This position control apparatus comprises means for generating a position command so as to give constant acceleration by adding an acceleration unit quantity &Dgr;Naa, set as a parameter beforehand, to a speed unit quantity N(n), means for generating a position command by calculating an acceleration unit quantity using an exponential function expression and by adding the calculated result to the speed unit quantity N(n), and means for generating a position command by comparing the present speed unit quantity N(n) and a function change speed unit quantity Nc set as a parameter beforehand and by selecting either of the command generating means described above on the basis of the compared result.