Hysteresis is a widely occuring phenomenon. It can be found in a wide variety of natural and constructed systems. Generally, a system is said to exhibit hysteresis when a characteristic looping behaviour of the input-output graph is displayed. These loops can be due to a variety of causes. Furthermore, the input-output graphs of periodic inputs at different frequencies are generally identical. ...

In this paper we addressed the problem of improving the control of AC motors used for the specific application of 3 degrees of freedom moving base flight simulator. Indeed the presence of backlash in DC motors gearboxes induces shocks and naturally limits the flight feeling. A comparison is hence set up between two techniques aiming to deal with this problem: Adaptive Fuzzy Controller and Neura...

Article history: Received 17 July 2011 Received in revised form 14 February 2012 Accepted 26 February 2012 Available online 5 March 2012

This paper describes the application of multivariable sequential relay autotuning techniques to a pilot scale distillation system under industrial DCS monitoring and control environment. Implementation aspects arising in any realistic industrial environment are fully discussed such as the architecture for on-line communication and information extraction as well as valve hysteresis and backlash ...

Abstract This paper focus on the hysteresis phenomenon of roll angular rate control resulting from backlash actuators for a high-speed aircraft in real flight. First, is analyzed time and frequency domain, then parameters are identified using statistic method. Second, based inverse model, L 1 adaptive controller with compensation designed. Third, two simulation tests without conducted results c...

The tendon driven mechanism using a cable and pulley to transmit power is adopted by many surgical robots. However, backlash hysteresis objectively exists in cable-pulley mechanisms, and this nonlinear problem is a great challenge in precise position control during the surgical procedure. Previous studies mainly focused on the transmission characteristics of the cable-driven system and construc...

The identification of Hammerstein systems is discussed for the systems that include memory nonlinearities. The focus is made on nonlinearities of the hysteresis-backlash type. The linear subsystem and the nonlinear element are identified separately. The identification of the former is dealt with combining an appropriate system parametrization and a specific input signal. The latter is designed ...