A magnetorheological fluid based planetary gear transmission for mechanical power-flow control

Christie, Matthew; Sun, Shuaishuai; Quenzer-Hohmuth, J.; Deng, Lei; Du, Haiping; Li, Weihua

doi:10.1088/1361-665x/abe87c

Cited by 6 publications

(3 citation statements)

References 29 publications

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“…Anurag Singh et al designed a new drum magnetorheological clutch with a wedge-shaped boundary, and experimental results showed that the proposed wedge-shaped drum magnetorheological clutch generated more torque than the existing drum magnetorheological clutch, thus resulting in better performance [13]. M. D. Christie et al proposed a magnetorheological fluid-based differential (planetary) gear transmission that variably connects motor power to a load attached to the planetary carrier output through a sun gear input [14]. Cirimele and Vincenzo et al proposed the study of magnetic gears through multi-objective optimization.…”

Section: Introductionmentioning

confidence: 99%

A Study on Power Transmission Control for Applying MR Fluid Multi-Plate Clutch to Automobile Power Distribution Device

Park,

Jeon,

Kim

2024

Applied Sciences

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The aim of this study is to design and manufacture a multi-plate clutch system that uses magnetorheological (MR) fluid control to allow for a variable power transmission ratio in power distribution systems. MR fluid is a smart material that enables presenting a solution to the shocks and power loss that occur due to mechanical problems in power distribution systems. As such, the longitudinal and lateral dynamic properties of 4WD (four-wheel drive) vehicles were examined and analyzed to develop an algorithm to control the front/rear power distribution according to the road surface state and driving conditions. To verify the algorithm, the CarSim vehicle dynamics simulation program was adopted to perform experiments to understand the vehicle’s dynamic performance improvements and turning stability via a HILS (Hardware in the Loop) system. In this study, an MR fluid, multi-plate clutch was used that combines a dry clutch and a wet clutch using the characteristics of the MR fluid. Such a clutch was designed to enable continuous and smooth torque transmission by utilizing the strengths of each of the dry and wet clutches. The CarSim vehicle dynamics program was used to conduct the experiments, which were conducted by linking to the manufactured MR fluid clutch experimental device. The experiments investigated the dynamic performance based on the power distribution ratio by performing longitudinal flat, inclined driving and lateral DLC (double lane change) driving. In summary, this study found that it is possible to perform power transmission by applying a current to an MR fluid and forming a magnetic field to change the flow properties of the fluid to control the torque transmission ratio that occurs in an MR fluid clutch.

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Section: Introductionmentioning

confidence: 99%

A Study on Power Transmission Control for Applying MR Fluid Multi-Plate Clutch to Automobile Power Distribution Device

Park,

Jeon,

Kim

2024

Applied Sciences

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“…Ref. [6] proposed a magnetorheological-fluid-based planetary gear transmission, which serves to variably couple the motor power through a sun gear input to a load affixed to a planet carrier output. Ref.…”

Section: Introductionmentioning

confidence: 99%

Design of Active Continuous Variable Transmission Control System with Planetary Gear

Yao¹,

Lin²

2022

Electronics

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Planetary gearboxes have been employed in various applications due to their advantages of maintaining a high speed-reduction ratio, such as in wind power applications which have now become a prevailing green energy resource. A traditional power transmission machine of the wind turbine has a fixed gear-ratio mechanical gearbox for speed-increasing transmission. The purpose of this study is to propose an active continuous variable transmission (ACVT) control system with a planetary gear to apply to the wind turbine. The planetary gear holds three terminals, i.e., the ring gear, the planet carrier, and sun gear, and the motions of three terminals can be controlled purposely by the servomotors to achieve ACVT. The three different transmission types of the proposed ACVT can be operated. The dynamic characteristic of the planetary gear is expressed in block diagram form, and a pseudo derivative feedback feed-forward controller of the velocity control loop is designed for the required performance. The results can be used to verify the effect of the proposed ACVT with the planetary gear.

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“…The shear viscosity and yield stress of MRF sharply increase by several orders of magnitude within a few milliseconds, which is called the magnetorheological (MR) effect [4]. This controllable and reversible mechanical property makes MRF widely applied in engineering, such as polishing, vehicle suspension, robotics, and aircraft landing gear, etc [5][6][7][8][9][10][11]. Modern industrial applications require lower zero-field viscosity of MRF to minimize energy loss.…”

Section: Introductionmentioning

confidence: 99%

Simulations on the rheology of dry magneto-rheological fluid under various working modes

Pei

Dong

et al. 2021

Smart Mater. Struct.

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This work studied the rheological properties and magnetorheological (MR) mechanism of dry magnetorheological fluid (MRF) under various working modes. A novel simulation method combining the discrete element method and computational fluid dynamics was developed, in which the bilateral coupling between particles and the flow field of the matrix (air) was considered. The microstructures and mechanical properties in the redispersion process, shear mode, and valve mode were systematically simulated for the first time. The results indicated that dry MRF presented superior redispersion property and response time (several μs) than liquid-based MRFs. In shear mode, the magnetic dipolar force and friction force dominated the evolution of microstructures. In valve mode, the magnetic dipolar force and viscous drag force of air became the main interactions. Magnetic particles aggregated into sturdy chain structures and hindered the airflow. The MR effect in valve mode was the pressure gradient of the matrix, which increased up to 1.08×105 Pa/m with the increasing particle volume fractions and decreased under a large inflow velocity. The best MR effect in valve mode was achieved under a magnetic field of B=63 mT. Simulations revealed the influence of dimensionless Mn and Re number on the MR effect. The pressure gradient of the matrix was controlled by the external field and can be utilized to design a dry MRF valve for precious and transient vibration control. Simulated dimensionless shear stress in shear mode agreed well with experiments. This work will promote the development and applications of novel high-performance MRFs.

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A magnetorheological fluid based planetary gear transmission for mechanical power-flow control

Cited by 6 publications

References 29 publications

A Study on Power Transmission Control for Applying MR Fluid Multi-Plate Clutch to Automobile Power Distribution Device

A Study on Power Transmission Control for Applying MR Fluid Multi-Plate Clutch to Automobile Power Distribution Device

Design of Active Continuous Variable Transmission Control System with Planetary Gear

Simulations on the rheology of dry magneto-rheological fluid under various working modes

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