The Magnetorheological Fluid: Testing on Automotive Braking System

Zainordin, Ahmad Zaifazlin; Mohamed, Zainai; Ahmad, Fauzi

doi:10.15282/ijame.18.1.2021.16.0651

Cited by 5 publications

(4 citation statements)

References 28 publications

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“…This shortcoming is caused by friction in the hardware system, particularly between two rough contact surfaces, as well as the inertia of the internal components of the DC motor, which slows the HILS system's response. The hardware finishing and DC motor limits can also contribute to slower system response [5], [40]. According to [38] and [41], the model response trend is the essential feature of a control-oriented model.…”

Section: Hils Results Of the Brake-based Cw-ewbmentioning

confidence: 99%

The Experimental Evaluation of Cone Wedge Shape based Electronic Wedge Brake Mechanism in Vehicle Braking System

Haris

Fauzi

Hassan

et al. 2022

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The brake system is one of the most critical parts of a vehicle's technology for avoiding accidents. The ultimate focus of the braking system is to guarantee that adequate stopping force is available to stop the vehicle's longitudinal movement. Therefore, the ability of a brake system to stop a vehicle must be examined in terms of analyzing the brake system's performance and the implementation of the brake system on actual vehicles. This study offers a performance evaluation of the Electronic Wedge Brake based on the Cone Wedge Shape (CW-EWB) on the vehicle brake systems. The evaluation was carried out through dynamic assessments, namely sudden braking tests at constant speeds of 40, 60, and 90 km/h using the MATLAB Simulink software simulation method and an experimental study using hardware-in-loop simulation (HILS). In the simulation study, the performance of the vehicle brake system using CW-EWB was compared with the brake performance of the vehicle using the conventional hydraulic brake (CHB). The results showed that CW-EWB behaved similarly to the hydraulic brake in terms of required brake torque output but with a faster response time, i.e., between 0.5 – 1 s. The HILS experimental study was conducted to evaluate the performance of the CW-EWB on actual vehicles. This method confirmed the HILS results against the simulation results with a variable response time of less than 6%. Vehicle body speed, wheel speed, longitudinal tire slip, and stopping distance experienced by the vehicle were all evaluated. The study's findings show that the proposed CW-EWB is quite effective and sufficiently dependable to be used as a vehicle brake system, notably in Antilock Braking Systems.

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Section: Hils Results Of the Brake-based Cw-ewbmentioning

confidence: 99%

The Experimental Evaluation of Cone Wedge Shape based Electronic Wedge Brake Mechanism in Vehicle Braking System

Haris

Fauzi

Hassan

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The primary data during braking maneuvers have been derived from the driver's braking signal, while the DHIL system utilized the deceleration data to distinguish between standard and harsh braking events. Specifically, braking with deceleration greater than 0.5g was classified as harsh braking, which would be equivalent to 150 MPa of brake pressure [50] - [54]. It is essential to emphasize that the energy required for braking remained constant across all speed settings.…”

Section: Dhil Controller Performance Based On the Braking Testmentioning

confidence: 99%

Development of a Dynamic Hitch Lift Controller using a Hybrid Control Strategy in A Heavy Combination Vehicle

Abdul Manaf,

Abu Bakar,

Hudha

et al. 2024

Int. J. Automot. Mech. Eng.

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This study presents a novel hybrid control strategy for the active hitch system, named the Dynamic Hitch Lift (DHIL), comprising a hybrid controller and a force actuator. The controller was designed to mitigate longitudinal load transfer in heavy combination vehicles by reducing the semitrailer pitch rate and rejecting the pitch moment, assisted by the virtual Skyhook moment. The new controller can calculate the desired force of the DHIL actuator to counter incoming load transfer during harsh braking exceeding 0.5 g braking deceleration. The proposed controller was assessed using a verified 12-degrees-of-freedom tractor-semitrailer model in harsh braking tests across different vehicle configurations. The first evaluation involved a stability test to demonstrate the stability of the controller in reducing load transfer across different vehicle configurations. The second evaluation was on controller performance, which revealed that the dynamic vehicle response has efficiently reduced load transfer by up to 9.14%. The third evaluation has focused on the DHIL actuator performance, which indicated that the actuator generated a force of 159,197 N, which translated into a stepper motor torque of 1,695 Nm at a speed of 1,000 rpm. Simulation results affirmed that the proposed DHIL controller was stable and could effectively reduce longitudinal load transfer in heavy combination vehicles during harsh braking.

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“…The primary goal of this evaluation is to assess the validity of the proposed mathematical model of the CW-EWB and its control scheme, the capability of the braking system, and the potential utility of the proposed CW-EWB in giving a braking response to slow down a wheel. Because braking torque in the EWB can only be measured during dynamic braking, a sudden braking method test similar to that employed by [1,47,48] is applied in this work. This technique involves applying sufficient braking force to cause the load and wheel to slow down.…”

Section: Performance Evaluations Of the Cw-ewbmentioning

confidence: 99%

Mechanism of Cone Wedge Shape Based Electronic Wedge Brake: Model and Experimental Validation

Haris

Ahmad

Jamaluddin

et al. 2023

Int. J. Automot. Mech. Eng.

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This paper describes a new design of an electronic wedge brake (EWB) system called the Cone Wedge Shape Based Electronic Wedge Brake (CW-EWB). The CW-EWB brake is made up of two cone wedges, one female and one male, stacked on top of each other. The CW-EWB is powered by the linear movement of a roller screw caused by the rotation of an electric motor through the roller screw, which causes the lower wedge to move tangentially to the disc brake, creating braking torque as the wheel rotates. A dynamic model of the CW-EWB that creates braking torque was built in this study, utilising a physical parametric estimate method. A torque tracking controller based on the proportional integral derivative (PID) control scheme is presented to ensure the CW-EWB model performs properly. The resulting mathematical model and control method were then experimentally tested using a braking test rig outfitted with multiple sensors and input-output (IO) devices. The performance of the brake mechanism is analysed in terms of actuator voltage, current, wedge position, wheel speed, and brake torque. Consequently, comparisons are made between experimental outcomes and simulated model responses. There are comparable trends between simulation results and experimental data, with an acceptable level of error.

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The Magnetorheological Fluid: Testing on Automotive Braking System

Cited by 5 publications

References 28 publications

The Experimental Evaluation of Cone Wedge Shape based Electronic Wedge Brake Mechanism in Vehicle Braking System

The Experimental Evaluation of Cone Wedge Shape based Electronic Wedge Brake Mechanism in Vehicle Braking System

Development of a Dynamic Hitch Lift Controller using a Hybrid Control Strategy in A Heavy Combination Vehicle

Mechanism of Cone Wedge Shape Based Electronic Wedge Brake: Model and Experimental Validation

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