Research and simulation of dynamic models for drum boiler
This paper introduces one kind of drum type boiler dynamic model structure, which considering the system nonlinearity. The dynamic model structure is introduced, and the equations that can solve the unknown parameters are given. In order to construct a new coordinated control system (CCS), the dynamic predicting equations of the load/pressure increment are concluded. The simulation results have illustrated the efficiency of the dynamic model and predict equations.
In this paper, we present a modified backstepping sliding mode control to deal with Euler–Lagrange systems. The controller is applied in an underwater vehicle in order to show the effectiveness of the approach proposed. Instantaneous power data provided by the propulsion system are used to tune the controller in order to guarantee robust performance and energy saving. Thanks to the combination of an internal Proportional Integral and Derivative (PID) controller, it is possible implement high gains to deal with the influence of disturbances and uncertainties. A comparative study among this backstepping sliding mode controller and standard sliding mode controls is presented.