dSPACE DSP-Based Real-Time Implementation of Fuzzy Switching Bang-Bang Controller for Automation and Appliance Industry

This work is an attempt to undertake the development and implementation of a new and practical fuzzy switching bang-bang controller for automation and appliance industry. Compatible with the structure of an enhanced bang-bang controller, a two-input fuzzy switching bang-bang controller with five rules is proposed. The key advantage is the ease of the design and flexibility. The idea is based on constructing a fuzzy switching control law which is functionally analogous to an enhanced bang-bang controller. The fuzzy switching bang-bang controller is implemented in real-time, using the position control of a brushless dc servo drive system as a testbed. The testbed was built and tested in the laboratory using a collection of tools that include both off-the-shelf hardware (dSPACE DSP DS1104) and software (MATLAB/Simulink). Experimental results show that the fuzzy switching bang-bang controller produces adequate control performance, particularly in handling nonlinearities and external disturbances. The efficacy of the fuzzy switching bang-bang controller is demonstrated by its positive results, when compared with an enhanced bang-bang controller. This paper also presents a hardware platform used during the implementation stage.