Application of a new type feedforward‐feedback controller in assembly machine for assembled camshaft

Abstract

Purpose

Aiming at the positioning accuracy control problem in the running of the assembly machine for assembled camshaft, a kind of position controller based on the feedforward‐feedback control of speed and acceleration is designed.

Design/methodology/approach

It combines feedforward‐feedback control with the quartic displacement curve acceleration/deceleration algorithm.

Findings

The axial dimension and the phase angle of the cam obtained after being assembled is checked. The result shows that for each type of camshaft, the error of the axial dimension of the cam is less than ±0.2mm and the error of the phase angle of the cam is less than ±30′. In addition, production efficiency is greatly improved (the assembling time is 90‐120S/piece).

Originality/value

The paper combines feedforward‐feedback control with the quartic displacement curve acceleration/deceleration algorithm for the first time.

Citation

Lin, B., Yu, G., Yang, S., Kou, S. and Wang, J. (2012), "Application of a new type feedforward‐feedback controller in assembly machine for assembled camshaft", Assembly Automation, Vol. 32 No. 4, pp. 333-339. https://doi.org/10.1108/01445151211262393