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RISS 인기검색어
- 검색키워드
- 저자 : Jancirani. J. (검색결과 3 건)
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A. J. D. Nanthakumar,J. JANCIRANI 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.9
Field controllable magnetorheological (MR) damper has gained prominence as a suitable vibration control device for a wide variety of applications as they offer the combined advantages of high-performance metrics of a fully active vibration control system with the cost metrics of a passive vibration control system. The functional quantity that influences the damping performance of a magnetorheological damper is the yield stress of the magnetorheological fluid across the fluid flow gap when the magnetic field is applied. To achieve maximum damping output from the magnetorheological damper, the geometry of the damper piston needs to be optimized. The main geometrical design parameters of the damper piston are the pole width, magnetorheological fluid flow gap, distance between piston rod and coil and the outer pole thickness. The optimization of the damper geometry is carried over with magnetic field strength and yield stress as response variables in two different iterations. A quadratic polynomial function is considered for both the response variables. The yield stress response variable is found to exhibit a more accurate following through the regression equation and it is selected as the response variable of choice. The individual effect of each of the design variable and the interaction effect of the design variables over the yield stress response variable is studied in this research paper. The optimal values of the piston geometry could be used to fabricate a magnetorheological damper prototype in future study.
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L. BALAMURUGAN,J. JANCIRANI,M. A. ELTANTAWIE 한국자동차공학회 2014 International journal of automotive technology Vol.15 No.3
In this paper, analytical characterization of the magneto-rheological (MR) damper is done using a new modifiedalgebraic model. Algebraic model is also more preferable because of its low computational expenses compared to differentialBouc-Wen’s model which is highly computationally demanding. This model along with the obtained model parameters is usedas a semi-active suspension device in a quarter car model and the stationary response of the vehicle traversing on a rough roadis obtained. The control part consists of two nested controllers. One of them is the system controller which generates thedesired damping force and the other is the damper controller which adjusts the voltage level to MR damper so as to track thedesired damping force. For the system controller a model reference skyhook Sliding Mode Controller (SMC) is used and forthe damper controller a continuous state algorithm is built to determine the input voltage so as to gain the desired dampingforce. The analytical model is subsequently used in the quarter car vehicle model and the vehicular responses are studied. Asimulation study is performed to prove the effectiveness and robustness of the semi-active control approach. Results show thatthe semi-active controller can achieve compatible performance as that of active suspension controller except for a littledeterioration.
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Reducing the seat vibration of vehicle by semi active force control technique
Sathishkumar. P.,Jancirani. J.,Dennie John 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.2
This article focusses on reducing the axis acceleration and minimizing the vertical displacement by using an air spring actuator and activeforce control as a main control element. In active force control loop track the developed force of an air spring actuator is fed as afeedback to the actuator. Mamdani and sugeno type fuzzy interference system are used to develop a desired force and to estimate mass ofthe system respectively. The performance of the system is analyzed for both time and frequency domains and contrasted with passivesuspension due to the irregular road disturbances. While developing the simulation model, quarter car suspension with seat as three degreeof freedom and an air spring actuator acting as a force generator are modeled as non-linear system. The simulation result shows theeffectiveness of the proposed control scheme in suppressing the undesirable effects of the suspension system.
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