Concurrent Vibration Control and Energy Harvesting of Electrically Interconnected Suspension with No
Abstract
Independent, reliable electricity supplies are critically important when the Marine Corps are in an expeditionary environment. In an, expeditionary environment, the need for electricity frequently tethers the Marine Corps to power grids, making logistics challengin,g and lowering energy independence. Energy harvesting shock absorbers (EHSAs) devices that convert vehicle suspension vibrations,into useful electricity hold great promise for providing reliable and independent electricity generation. A recent review reports,that a shock absorber in a typical passenger car driving at 70 km/hour on a Class F road (ISO 8608) can generate a mean power of up,to 1.2 kilowatts. This can serve as an estimate of the,Despite the great potential of available energy, several deficits in traditional EHSAs hinder the application of the technology in c,ombat vehicles. First, traditional EHSA designs operate based on linear resonance, and are generally narrow-banded near the linear r,esonance frequencies of a vehicle. Because road irregularities have a broadband, stochastic nature, the actual excitation often does, not occur at the resonance frequencies found in traditional EHSA designs, resulting in low power generation. Second, traditional EH,SA designs trade suspension performance for energy recovery. Currently, high-efficiency energy harvesting and a good suspension perf,ormance cannot be achieved at the same time. Off-road driving already poses challenges to suspension systems and hinders the mobilit,y of combat vehicles; using traditional EHSA designs for energy harvesting would exacerbate these issues. Until new EHSA designs are, available for high-efficiency, broadband energy harvesting while also attaining a good suspension performance, it remains unlikely,s.The overarching goal of the proposed research is to develop a novel nonlinear EHSA-integrated, electrically interconnected suspens,ion system that promises both superior suspension performance and high energy-harvesting efficiency (dual functions). This suspensio,n system will provide new opportunities for Marine Corps vehicles to not only demonstrate enhanced mobility, but also to provide rel,iable and independent electricity by themselves. To this end, the team will pursue three objectives: 1) Develop a nonlinear energy-h,erconnected suspension to enhance anti-pitch/roll performance and energy harvesting in the pitch/roll mode.3) Prototype an EHSA that, fits a 3300-lbs Marine Corps vehicle to conduct in-laboratory benchmark testing, experimental verification, and on-road demonstrati,ons.The team proposes three closely integrated research thrusts to achieve these objectives. First, the team will optimize the propo,sed EHSA-integrated suspension by actively exploring the stochastic dynamics in nonlinear regions. Analytical and numerical techniqu,es are proposed to achieve multi-objective optimization of the suspension system. Second, the team will explore different electrical, network topologies to maximize the delivery of electrical power from suspension vibrations to the EHSA. The team will use a pseudo-,impedance technique to determine suitable networks that favorably embrace the nonlinear dynamics of the proposed EHSA. Third, the te,am will build an experimentally calibrated prototype of the proposed EHSA by integrating a ball-screw electromagnetic EHSA and centr,ifugal pendulums. Bench tests and an on-road demonstration will be conducted to experimentally verify the proposed performance. This, research will lead to the development of a novel EHSA technology that enhances both suspension performance and energy generation.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 13, 2022
- Source ID
- N000142212533
Entities
People
- Wei-Che Tai
Organizations
- Michigan State University
- Office of Naval Research
- United States Navy