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This research provides a unique contribution to the field of in-wheel motor drive electric vehicles (EVs) by addressing the challenges associated with the use of permanent magnet synchronous motors (PMSMs) for traction. These motors, integrated into the unsprung masses, increase the rotational inertia of the wheels, reducing ride smoothness on uneven roads. To mitigate this issue, we present an optimal Kalman filter for a magnetorheological (MR) control suspension system that correlates road inputs between the front and rear wheels. This filter significantly improves the estimation accuracy of state variables by incorporating the vertical motion of the motor, along with potential enhancements from wheelbase preview. To determine the most suitable coil spring types for use with MR dampers, we used the WDW-600 computer-controlled electronic universal testing machine to evaluate three coil spring types: constant pitch (model A), variable pitch (model B), and conical spring (model C). To
Gad, Ahmed ShehataDarakhshan Jabeen, SyedaEl-Zomor, Haytham M.Tolba, MohamedElamy, Mamdouh I.
Performing transportation and exploration tasks on rugged terrain requires both high load-bearing capacity and large suspension stroke. However, the corner module configurations applied to challenging terrain have rarely been explored. This article proposes an integrated framework that combines bionic principles with topology graph–based type synthesis. This framework leads to the creation of a reconfigurable wheel-legged mechanism capable of switching between wheeled locomotion and legged gait modes, which is then implemented as a corner module system. First, inspired by the skeletal–muscular system of the equine leg, a structure–function mapping relationship between the biological system and the mechanical system is established. Second, a multi-loop closed-chain mechanism with biomimetic morphology is represented in the form of graph theory. A configuration atlas of the wheel-legged hybrid mechanism is generated based on the contracted graph and open-loop kinematic chains, and
Gao, ZhenhaiZhang, HanyingChen, GuoyingZhang, SuminHan, Zongzhi
This specification covers an aluminum alloy in the form of sheet 0.125 to 0.249 inch (3.18 to 6.32 mm), inclusive, in nominal thickness (see 8.6).
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of rolled or cold-finished bars, rods, and wire and of flash-welded rings and stock for flash-welded rings.
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of welding wire.
AMS D Nonferrous Alloys Committee
This specification covers a leaded bronze in the form of sand and centrifugal castings (see 8.6).
AMS D Nonferrous Alloys Committee
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
This SAE Standard covers a single Un-Jacketed (UTP) and Jacketed (J-UTP) Balanced Unshielded Twisted Pair data cable intended for use in surface vehicle cables for 10 Mb/s Ethernet shared bus applications. The tests in this document are intended to qualify cables for normal operation in an automotive environment while maintaining the necessary electrical properties for reliable data transmission.
Cable Standards Committee
This document is written to address acceleration and deceleration control issues related to heavy-duty trucks and buses greater than 10000 GVW.
Truck and Bus Brake Systems Committee
This specification covers a 100% homopolymer of polychlorotrifluoroethylene (PCTFE) in the form of molded sheet 0.250 inch (6.35 mm) and under in nominal thickness.
AMS P Polymeric Materials Committee
This SAE Recommended Practice has been adopted by SAE to specify: A standard procedure for chassis dynamometer testing of heavy-duty road vehicles for the purpose of determining power delivered through the drive tires. A method of correcting observed power to reference test conditions. A method of analyzing the test data to determine if the test results are within expected power ranges.
Engine Power Test Code Committee
This specification covers a premium aircraft-quality, corrosion-resistant steel in the form of sheet, strip, and plate.
AMS F Corrosion and Heat Resistant Alloys Committee
This SAE Aerospace Standard (AS) establishes the requirements for a V-band grooved clamp couplings that are intended for use on fluid-line tubing joints, tailpipe joints, and accessory mount joints, on flight vehicles or other attachments. The semi-rigid coupling joint assemblies, hereafter referred to as “the joint”, shall operate within the temperature ranges specified in their applicable part standards.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
This specification covers an aluminum alloy in the form of sand, investment, permanent mold, and composite mold castings with nominal wall thicknesses of up to 1.0 inch (25.4 mm), inclusive (see 8.8).
AMS D Nonferrous Alloys Committee
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
This specification covers steel cleanliness requirements for premium aircraft-quality ferromagnetic steels, including hardenable, corrosion-resistant steels, by magnetic particle inspection methods. This specification contains sampling, sample preparation, inspection procedures, and cleanliness rating criteria (see 8.2).
AMS E Carbon and Low Alloy Steels Committee
This SAE Aerospace Recommended Practice (ARP) describes an industrial battery, lead-acid type, for use in electric powered ground support equipment.
AGE-3 Aircraft Ground Support Equipment Committee