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Efforts are made to investigate the behavior of active suspension system with application of fuzzy logic controller, for better performance against uncertain operating environment. Comprehensive analysis of the complex four degree of freedom system, for derived mathematical model, is performed with the application of Simulink, and a fuzzy logic controller is tested and suggested to improve the performance...
Tremor is a common disorder in human which affects various joints of body including elbow joint. Application of functional electrical stimulation (FES) to attenuate and suppress tremor in patients with movement disorders and diseases have been investigated in different research. In this paper, a method based on Adaptive neuro-fuzzy inference system (ANFIS) has been implemented to control pathological...
Walkers are commonly seen in hospitals and clinics, but only individuals with fairly good motor function can use them. Hence, walkers should be more adaptive to the various needs of the users. This study includes the conceptual design, implementation and validation of a Smart Walker with a new interface approach integrated. The implementation of the interface is based on two potentiometers and it...
A novel design of two-wheeled double inverted pendulum-like vehicle with a movable payload is presented in this paper. The developed design extends the abilities of the vehicle with five degrees of freedom. The increase of degrees of freedom provides the vehicle with more flexibility in maneuvering in narrow spaces and limited travel distances. The dynamic model of the system is derived using Euler-Lagrange...
To have a complete model of a thunniform Fish-Robot, models of both body and tail are required. The dynamic model of the body is developed according to the parameters of a thunniform Fish-Robot built in MIT University, while, as the main part of this paper, the dynamic model of the tail is developed using fuzzy logic. Using experimental data and table look-up scheme, a fuzzy black box is introduced...
This paper presents a simple procedure for acoustic noise reduction in switched reluctance motor (SRMs) drive. The main sources of acoustic noise in a SRM are the radial magnetic force and torque ripple. Investigations of a radial force require an analytical relationship between motor designs and drive parameters. Thus, in this method two mathematical methods for calculation of radial force and torque...
This study describes some possibilities of setting up an adaptive control method for an electromagnetically actuated presser-foot in an industrial high-speed sewing machine. The control of fabrics feeding in sewing machines is difficult not only because of the complexity of relations between the intervening variables (material properties, sewing speed), but also because in many operations a varying...
Regenerative braking can improve energy usage efficiency and prolong the driving distance of electric vehicle per charge, effectively. In the paper, we design a sugeno's fuzzy logic controller which has four inputs including driver's braking requirements, vehicle speed, batteries' SOC, batteries' temperature and one output which is the regenerative braking force. We do some improvement on the force...
The paper discussed the method of resonant frequency lock based on fuzzy logic control technique. Detailed illustration of fuzzy logic control to the resonant fatigue testing machines is presented. At last experiment result based on fuzzy logic control is compared to the conventional PID method.
In order to reduce the vibration of smart structures, this paper gets the optimal location of piezoelectric patch by the D-optimal design principle, and then uses a fuzzy logic controller which was designed base on optimal fuzzy rules to control it. The D-optimal design principle is an optimization method which chosen by the maximum determinant of Fisher information matrix criteria. Study on the mode...
In the study of active vibration of piezoelectric smart structures, the piezoelectric materials always show non-liner characteristic, so this paper uses the fuzzy logic to control the smart structures vibration. The fuzzy IF-THEN rules are established on analysis of the motion traits of cantilever beam. The fuzzy controller designs on using the displacement and the velocity of the cantilever beams...
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