The vibration damping effectiveness of an active seat suspension system and its robustness to varying mass loading

Maciejewski, Igor; Meyer, Lutz; Krzyżyński, Tomasz

doi:10.1016/j.jsv.2010.04.009

Cited by 86 publications

(56 citation statements)

References 16 publications

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“…The type of suspension systems may include pneumatic, hydraulic, mechanical, or combination of these suspension systems (Drakopoulos, 2008;Maciejewski et al, 2010). The first seat suspension systems provided suspension only in the vertical axis based on a coil spring and telescopic hydraulic dampers.…”

Section: Methodsmentioning

confidence: 99%

Vibration analysis on driver’s seat of agricultural tractors during tillage tests

Γιαλαμάς

Gravalos

Kateris

et al. 2017

Span. j. agric. res.

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The vibration of the driver's seat of agricultural tractors was investigated during three alternative tillage operations. Three tractors including a range of specifications were considered, at a range of forward speeds. The interactions between the tractors, implements and speeds were examined using the SPSS program and the GLM-ANOVA method. The results analysis indicated that the tractors played the first major role in vibration development in the lateral axis and was followed by the implements. In contrast, the implements played the first major role in the development of vibration in the horizontal axis and are followed by factor tractors. The statistically significant effect in vertical and horizontal axes shows the factor implements. In addition, the statistically significant effect in the vertical and lateral axes shows again the implements to be the most significant factor. Of the implements, the plough shows the highest vibration and displays statistically significant difference in comparison with the other implements.

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Section: Methodsmentioning

confidence: 99%

Vibration analysis on driver’s seat of agricultural tractors during tillage tests

Γιαλαμάς

Gravalos

Kateris

et al. 2017

Span. j. agric. res.

View full text Add to dashboard Cite

show abstract

“…A negative stiffness seat suspension is proposed for a passive seat suspension to have better performance in resonance frequency [2]. The active seat suspensions has been proposed with different actuators, such as the electromagnetic linear actuator [3], the hydraulic absorber [4], the pneumatic actuator [5] and the rotary motor [6][7][8]. The active seat suspension has best performance in improving ride comfort, but the high energy consumption is the main issue for its application.…”

Section: Introductionmentioning

confidence: 99%

An Energy Saving Variable Damping Seat Suspension System With Regeneration Capability

Ning

Sun

et al. 2018

IEEE Trans. Ind. Electron.

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In this paper, an energy saving variable damping seat suspension system is designed, manufactured and validated. A controllable electromagnetic damper (EMD), which consists of a permanent magnet synchronous motor (PMSM), a 3-phase rectifier, a metal-oxide-semiconductor field-effect transistor (MOSFET) switch module, an external resistor, a diode, and a capacitor, is designed and tested firstly. The EMD is integrated with a planetary gearbox to amplify its torque output, and both of them are installed on the centre of the scissors structure of a seat suspension. The EMD's damping property can be controlled by exerting pulse width modulation (PWM) signal with different duty cycles on the MOSFET switch module. By analysing the EMD test results and the seat suspension's kinematic, the controllable damping of the EMD is derived from 115.68 Ns/m to 669.74 Ns/m. A control method for vibration isolation is proposed considering that the generated damping force is reverse to the suspension's relative velocity, and its value is related to both the damping coefficient and the relative velocity, thus the desired control force can be partially achieved by the variable damper. The proposed variable damping seat suspension and its controller are validated on a 6-degree of freedom (6-DOF) vibration platform in both frequency domain and time domain. The test results show that the controlled variable damping seat suspension has better performance in vibration isolation than the proposed seat with highest and lowest damping, and the conventional passive one. In the meantime, the RMS value of the system harvestable power is 1.492 W, and the power consumption of the PWM control signal is very few. Therefore, this variable damping seat suspension can improve the ride comfort with ignorable energy cost.

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“…Several kinds of active actuators has be applied for active seat suspensions; e.g. a hydraulic absorber and a controlled air-spring (Maciejewski et al, 2010), electric servomotor with a ball screw mechanism (Kawana and Shimogo, 1998), electromagnetic linear actuators and rotary motors .…”

Section: Introductionmentioning

confidence: 99%

Integrated active and semi-active control for seat suspension of a heavy duty vehicle

Ning

Sun

et al. 2017

Journal of Intelligent Material Systems and Structures

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In this article, an integrated active and semi-active seat suspension for heavy duty vehicles is proposed, and its prototype is built; an integrated control algorithm applied measurable variables (suspension relative displacement and seat acceleration) is designed for the proposed seat prototype. In this seat prototype, an active actuator with low maximum force output (70 N), which is insufficient for an active seat suspension to control the resonance vibration, is applied together with a rotary magnetorheological damper. The magnetorheological damper can suppress the high vibration energy in resonance frequency, and then a small active force can further improve the seat suspension performance greatly. The suspension's dynamic property is tested with a MTS system, and its model is identified based on the testing data. A modified on-off controller is applied for the rotary magnetorheological damper. A H ͚ controller with the compensation of a disturbance observer is used for the active actuator. Considering the energy saving, the control strategy is designed as that only when the magnetorheological damper is in the off state (0 A current), the active actuator will have active force output, or the active actuator is off. Both simulation and experiment are implemented to verify the proposed seat suspension and controller. In the sinusoidal excitations experiment, the acceleration transmissibility of integrated control seat has lowest value in resonance frequency and frequencies above the resonance, when compared with power on (0.7 A current), power off (0 A current) and semi-active control seat. In the random vibration experiment, the root mean square acceleration of integrated control seat suspension has 47.7%, 33.1% and 26.5% reductions when compared with above-mentioned three kinds of seat suspension. The power spectral density comparison indicates that the integrated seat suspension will have good performance in practical application. The integrated active and semi-active seat suspension can fill energy consumption gap between active and semi-active control seat suspension. AbstractIn this paper, an integrated active and semi-active seat suspension for heavy duty vehicles is proposed, and its prototype is built; an integrated control algorithm applied measurable variables (suspension relative displacement and seat acceleration) is designed for the proposed seat prototype. In this seat prototype, an active actuator with low maximum force output (70 N), which is insufficient for an active seat suspension to control the resonance vibration, is applied together with a rotary magnetorheological (MR) damper. The MR damper can suppress the high vibration energy in resonance frequency, and then a small active force can further improve the seat suspension performance greatly. The suspension's dynamic property is tested with a MTS system, and its model is identified based on the testing data. A modified on-off controller is applied for the rotary MR damper. A ∞ controller with the compensation of a disturbance ...

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The vibration damping effectiveness of an active seat suspension system and its robustness to varying mass loading

Cited by 86 publications

References 16 publications

Vibration analysis on driver’s seat of agricultural tractors during tillage tests

Vibration analysis on driver’s seat of agricultural tractors during tillage tests

An Energy Saving Variable Damping Seat Suspension System With Regeneration Capability

Integrated active and semi-active control for seat suspension of a heavy duty vehicle

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