Ergonomic analysis of the effects of a telehandler's active suspended cab on whole body vibration level and operator comfort

Caffaro, Federica; Cremasco, Margherita Micheletti; Preti, Christian; Cavallo, Eugenio

doi:10.1016/j.ergon.2015.10.009

Cited by 33 publications

(21 citation statements)

References 44 publications

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“…According to the value of K e and equations (10) and 11, the stiffness K H of the transverse spring can be determined as…”

Section: Matching Of the Nonlinear Suspension Systemmentioning

confidence: 99%

“…Previous studies on cab vibration of commercial vehicles mostly focused on the optimization of passive suspensions [7,8]. In order to improve vehicle comfort, some scholars have adopted active or semiactive control methods [9,10], but they have not been applied in practice for many years. For passive suspensions, if their stiffness is larger, the ride comfort will be worse; if their stiffness is smaller, the suspension deflection will be larger.…”

Section: Introductionmentioning

confidence: 99%

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Matching, Stability, and Vibration Analysis of Nonlinear Suspension System for Truck Cabs

Zhao

et al. 2019

Shock and Vibration

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To improve comfort, a nonlinear suspension system is proposed on the basis of the nonlinear vibration isolation theory and the installation space of the cab suspension system for trucks. This system is suitable for all-floating cabs. For easy matching and design, the static and stability characteristics of the suspension system were analyzed, respectively, and the boundary condition for the stability of the system was given. Moreover, the cab simulation model was established, and the dynamic simulation was conducted. The stability analysis shows that the smaller the vibration excitation of the cab system, the higher its stability is. The dynamic simulation results show that the acceleration of the cab with the nonlinear suspension system is effectively suppressed; the dynamic deflection of the suspension is kept within a certain range, and the design space of the suspension stroke can be effectively utilized. Compared with the traditional linear suspension system, the nonlinear suspension system has better vibration isolation characteristics and can effectively improve ride comfort.

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“…According to the value of K e and equations (10) and 11, the stiffness K H of the transverse spring can be determined as…”

Section: Matching Of the Nonlinear Suspension Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Matching, Stability, and Vibration Analysis of Nonlinear Suspension System for Truck Cabs

Zhao

et al. 2019

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…Nitti and Santis were studied for assessment and prediction of WBV exposure in transport truck drivers and emphasized the importance of developing cabin suspension systems [44]. Caffaro and friends have investigated whether an active cabin suspension system fitted on a telehandler was effective in reducing WBV or not, and in improving the comfort in their study [45]. Johnson and friends worked to show the WBV exposure differences between the conventional and cab-over design flatbed trucks, and they found that the conventional design performed better in exposures [46].…”

Section: Introductionmentioning

confidence: 99%

Vibration Control of Truck Cabins With the Adaptive Vectorial Backstepping Design of Electromagnetic Active Suspension System

Başaran

2020

IEEE Access

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The active suspension system is an important equipment that isolates the vibrations that may come from outside in a land vehicle. In heavy vehicles, the active suspension system can be used to dampen vibrations in the driver's cabin. The electromagnetic actuator is used as an active element in suspension system. Traditionally, the use of active suspension systems is mainly on automobiles and the studies related to heavy vehicles like trucks lack enough interest. In this study, dynamic modeling of a three-axle heavy vehicle cabin is performed with a half-car approach and it is aimed to suppress the disruptive effects coming from the road with active electromagnetic actuators. Lyapunov based backstepping control design is expressed in vectorial form for the heavy vehicle system, which is a multi-input multi-output system. To demonstrate the performance of the designed controller, a comparison has been made for the active and passive states for the truck cabin suspension system. The main feature of the applied control method is that it does not require knowing the actuator parameters, the adaptive term can handle the estimate of the actuator parameter. The stability of the proposed system has been proven via Lyapunov based arguments and given simulation works. The results obtained are important to suppress vibration, consequently, decreases the vibration exposure for truck drivers in terms of occupational health and safety aspects. INDEX TERMS Adaptive backstepping control, Truck cabin suspension system, Truck modeling.

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“…Then, they analyzed the effect of the device active suspended cab on the human body vibration and did the study of the operators' comfort [1]. Aiming at improving operating conditions, Sun and Zhang had done the low-frequency vibration study of the bulldozer cab vibration; then, the structure design and improvement scheme of the equipment had been proposed [2].…”

Section: Introductionmentioning

confidence: 99%

Study on Vibration Characteristics and Human Riding Comfort of a Special Equipment Cab

Ren

Peng²,

Shen

et al. 2018

Journal of Sensors

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Special equipment drivers often suffered from vibration which threatened their physical and mental health. In order to study the riding comfort of a special equipment cab, a hammering experiment has been carried out on it by acceleration sensors. According to the test results, the natural frequency has been calculated which was compared with the result analysis by the finite element method. Next, the equipment operating condition test on a flat road was done. The vibration characteristics of the whole vehicle were obtained later. The results show that the cab vibration and the finite element results agree well, but the natural frequency of the cab is close to the vibration frequency of the human body. And this is not conducive to long-term operation of the drivers. In order to improve the human operational comfort, it is necessary to reduce its natural frequency during the cab structure design process. The research in this paper can provide help for the similar human-machine operation comfort study and product design.

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Ergonomic analysis of the effects of a telehandler's active suspended cab on whole body vibration level and operator comfort

Cited by 33 publications

References 44 publications

Matching, Stability, and Vibration Analysis of Nonlinear Suspension System for Truck Cabs

Matching, Stability, and Vibration Analysis of Nonlinear Suspension System for Truck Cabs

Vibration Control of Truck Cabins With the Adaptive Vectorial Backstepping Design of Electromagnetic Active Suspension System

Study on Vibration Characteristics and Human Riding Comfort of a Special Equipment Cab

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