Nonlinear control considering temperature dependence of thermal conductivity for a cooling and heating system based on the concept of sliding mode

A cooling and heating system using Peltier devices has two spaces, one space is kept at a low temperature, and the other space is kept at a high temperature. Peltier devices have nonlinearity, so it is difficult to control the system. In this paper, an operator based control system using a concept of sliding mode is designed. Furthermore, temperature dependence of thermal conductivity is considered. The effectiveness of the designed controller is confirmed by simulation results.