Results
repositories = "NORA (Norwegian Open Research Archives)"
Limit cycles and Hopf bifurcations in a Kolmogorov type system
Description :
The paper is devoted to the study of a class of Kolmogorov type systems which can be used to represent the dynamic behaviour of prey and predators. The model is an extension of the classical prey-predator model since it allows intra-specific competition for the predator's species. The analysis shows...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
Efficient inverse position transformation for TR 4000S robot manipulator
Author(s) :
Wang, Kesheng
Description :
An efficient method is developed for computing the inverse kinematic position solution with a closed form for the TR 4000S spray painting robot manipulator with five degrees of freedom and non-spherical wrist construction. The inverse kinematic problem is defined as the transformation from Cartesian...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
Trajectory generation for manipulators using linear quadratic optimal tracking
Description :
The reference trajectory is normally known in advance in manipulator control which makes it possible to apply linear quadratic optimal tracking. This gives a control system which rounds corners and generates optimal feedforward. The method may be used for references consisting of straight-line segme...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
Performance evaluation of positive regulators for population control
Description :
This paper deals with real time control of age-structured populations described by Leslie models with positive inputs. The classical industrial and pole-assignment regulators are adapted to this class of positive systems and their performance is evaluated through simulation. The influence of noise o...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
Role of computational efficiency in process simulation
Description :
It is demonstrated how efficient numerical algorithms may be combined to yield a powerful environment for analysing and simulating dynamic systems. The importance of using efficient numerical algorithms is emphasized and demonstrated through examples from the petrochemical industry.
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
SIMLAB. A training simulator for emergency preparedness decisions
Description :
The paper describes an EDP-simulation program package SIMLAB (Simulation Laboratory) which is under development for Esso Norge A/S by A/S Quasar Consultants. SIMLAB is a simulation training course for personnel involved in safety and contingency planning and/or personnel who have operative responsib...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
HVAC-DYNAMIC:a training simulator for dynamic analysis of HVAC plants
Description :
HVAC-DYNAMIC is a software tool for the dynamic simulation of Heating, Ventilation and Air Conditioning (HVAC) plants. The program is designed to be used by HVAC engineers during design or troubleshooting of plants and by plant operators in their training. The program is based on a set of the most-u...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
Control elements in mechanism simulation
Author(s) :
Iversen, Torleif
Description :
The work reported in this paper is a step towards a system for multidisciplinary simulation of structure, mechanism and control elements. The control part of the system is implemented as a subroutine called from the mechanism/FEM package. While Newmark's/beta-method is used to integrate the second o...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
User experience with on-line predictive river flow regulation
Description :
A control strategy based on adaptive prediction and a receding horizon controller is used to regulate the river flow-rate in Suldalslågen in the Ulla-Førre production system on the south-west coast of Norway. The adaptive prediction of the unregulated inflow used precipitation data and flow-rate dat...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English
Effective use of full scale simulators for training
Author(s) :
Malik, Tahir I.
Description :
A full scale process simulator is a type of simulator which is comprehensive in the details of the plant simulated, emulated or replicated. The experience of use of non-nuclear, full scale process simulators is relatively fresh. There is enormous scope for increased or more effective utilization thr...
Repository :
NORA (Norwegian Open Research Archives)
Language(s) :
English