Analysis and estimation of friction and compensation for its effects in the control of an electrohydraulic manipulator is addressed in this paper. The specific hydraulic manipulator is an integral part of an automated fish processing machine which has been developed in our laboratory. The analysis reveals that considerable static and dynamic friction exists in the system. An available nonlinear...

ABSTRACT: This is one of a series of white papers on systems modelling, analysis and control, prepared by Control Systems Principles.co.uk to give insights into important principles and processes in control. In control systems there are a number of generic systems and methods, which are encountered in all areas of industry and technology. These white papers aim to explain these important system...

The construction and performance of a fluorescence polarization spectrophotometer is described, the parts of which are mostly commercially available items. The instrument uses two photomultipliers to detect separately each polarized component of the fluorescent light. The ratio of the components is plotted continuously by means of a ratio recorder while the wave length of the exciting light is ...