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In this paper, the oscillation behaviors of terminal sliding mode control systems due to Euler discretization are studied. Periodic orbits are observed. Necessary and sufficient conditions for the existence of periodic orbits with a specific period are given. Simulations are presented to verify the theoretical results. [ABSTRACT FROM PUBLISHER]

This paper presents the identification of a gas furnace process using the so called wavelet based State Dependent Parameter (WSDP) models. Here, each of the process' dominant dynamics are characterized by a state dependent parameter in form of wavelet which is able to provide valuable insight, and effective means to measure the system's degree of nonlinearity. To illustrate the advantages of the proposed modeling approach, the identified model is benchmarked with a few welknown reported results, i.e. fuzzy logic, generalised kernel and linear ARX models. [ABSTRACT FROM PUBLISHER]

The development of a Hardware-in-the-Loop (HiL) simulation platform for precision induction motor (IM) servo drive development, evaluation and testing of various control architectures is described in this paper. The platform uses industrial graded hardware components, i.e. Mitsubishi IGBT inverter, 3-phase induction motor and incremental optical encoder as well as various measurement sensors. Its main computational core is implemented using an xPC Target platform which enables rapid validation, prototyping and deployment of various control algorithms via Matlab & Simulink. [ABSTRACT FROM PUBLISHER]

Hardware-in-the-Loop (HiL) has been a proven technique, widely used in the development and testing of realtime embedded systems, especially in the automotive industry. This paper describes the development of a HiL simulation platform for motion control systems, demonstrated with an example of Permanent Magnet Synchronous Motor (PMSM) control system development and testing. The platform uses industry graded hardware, i.e. Mitsubishi IGBT driver, high performance SEM PMSM motor, etc. as well as various measurement sensors and associated electronics. Here, the platform main computational core is implemented using xPC Target platform which enables rapid validation, prototyping and deployment of tested control modules via Matlab and Simulink. [ABSTRACT FROM PUBLISHER]

Variation of relevant mechanical parameters (i.e. moment of inertia, viscous coefficient) highly influences the performance of servo motor drive systems as it affects the motor's mechanical dynamics. This paper, on one hand, reviews relevant approaches to the estimation of such parameters of motion control systems, identifying their strengths and weaknesses. On the other hand, an efficient alternative to such an estimation problem is presented. This approach is relatively simple, thus computationally advantageous to implement, yet very robust to external disturbances such as measurement noise, mechanical resonance within the drive system. [ABSTRACT FROM PUBLISHER]