Mechanical Engineering

Semi-Active Suspension System Simulation Using SIMULINK

S Abramov et al. — Fri, 19 Mar 2010 02:34:53 PDT

This paper describes a simulation design procedure aimed to achieve improved performance of the vehicle semi-active suspension. The issues related to the design of vehicle models with skyhook control are discussed. Three basic models with linear parameters are explained: quarter-, half- and full-car. The road profile is generated from a spatial power spectral density (PSD) to represent a typical road (based on ISO 8608 classification). The normalized root-mean-square values of sprung mass acceleration and tyre load forces are used to assess the vehicle ride comfort and handling performance based on five benchmark road profiles employed in industrial tests.

Simulation of Wind Heat Generator

M Katawaluwa et al. — Mon, 08 Feb 2010 04:27:58 PST

Wind turbines are traditionally used to generate electrical energy. However for small, remote applications a wind turbine can also be used to convert wind power into thermal power in order to reduce the cost of energy used for heating sys-tems. The wind heat generator is based on the principle of the Joule machine driven by a wind turbine. To obtain optimal per-formance the torque-speed characteristics of the turbine and the heat generator should be matched. By recognising this require-ment the model of a wind heat generator was developed and simu-lated. The result of the simulation shows the behavior of the wind heat generator operating at maximum power.