Regenerative Suspension System for Electric Vehicles

电动汽车再生悬架系统

• 批准号: RGPIN-2014-05526
• 负责人: Golnaraghi, Farid
• 金额: $ 2.4万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=652108
• 关键词: Regenerative; Suspension; System; Electric; Vehicles

The global transition from internal combustion engine to electric drive vehicles is well on its way, and is inevitable. According to a document by the Electric Vehicle Technology Roadmap (evTRM) for Canada [1], "by 2018, there will be at least 500,000 highway-capable plug-in electric-drive vehicles on Canadian roads." This strategic vision for highway-capable battery-electric, plug-in and other hybrid-electric vehicles has identified many challenges and opportunities for Canadian universities, industry and government to meet this goal. While Canada, with abundance of renewable electric power, is in a race with other countries towards adopting electric cars, according to evTRM, it has not maintained a competitive advantage in research and commercialization. United States, European community and Asian countries have overtaken Canada in setting aggressive goals and investments to achieve them-in getting electric vehicles on the road and establishment of a new auto industry. In order to gain a competitive advantage in this area, a coordinate effort is required that starts from academic research, moving all the way to successful commercialization to realize the full benefits of this growing industry.*Global R&D efforts focusing on enhancing the performance of electric drive vehicles have identified battery performance as the key bottleneck, hindering the complete or immediate embracement of this technology. Today's battery packs are expensive and are only able to store a relatively low amount of energy. In the current setting, an electric car does not meet the North American long haul daily commute demands, and this, in the PI's opinion, has been the key reason for demise of GM's Chevrolet Volt. GM's current effort is to redesign and launch this vehicle in 2015-2016 [2].*While research effort into improving battery power is in full gear through the development of new materials, the energy harvesting technology can play a crucial role in extending battery power and vehicle operational range. The key energy harvesting technology currently exploited is based on regenerative braking. Although this technology makes more sense for city driving where brakes are more often used, regenerative brakes are less effective in charging the battery during steady-state highway operation-the main portion of an average North American daily commute.*My vision for the current proposal is to develop - through a viable research program - a unique and innovative energy harvesting technology by efficiently capturing the vibratory energy in the suspension system that otherwise is wasted. The system is envisaged to harvest sufficient power to charge a battery while being also used as an actuator for active ride, handling and stability control when necessary. My particular interest is to arrive at a hardware/software intelligent system to harvest energy from the suspension during long haul (low-amplitude high-acceleration) highway driving. *The proposed research will utilize my mechatronic research expertise in sensors and actuators, as well as my well established theoretical background in nonlinear dynamics and control systems, to arrive at a bandwidth enhanced regenerative suspension system. The proposed research program will include various interconnected projects that support HQPs and ultimately assist the Canadian start-up companies in this area (three in Vancouver alone), with good ideas but limited resources. The ideas discussed herein represent original and innovative concepts that will ultimately lead to groundbreaking advances. The outcome of this five year research program is a pre-commercialization prototype suspension system that efficiently switches between energy generation and control modes.

全球从内燃机汽车向电动汽车的转型正在顺利进行，而且是不可避免的。根据加拿大电动汽车技术路线图 (evTRM) 的一份文件[1]，“到 2018 年，加拿大道路上将至少有 50 万辆具有高速公路功能的插电式电动汽车。”这一针对高速公路电池电动、插电式和其他混合动力电动汽车的战略愿景为加拿大大学、工业界和政府实现这一目标带来了许多挑战和机遇。据evTRM称，虽然拥有丰富可再生电力的加拿大正在与其他国家竞相采用电动汽车，但它在研究和商业化方面并未保持竞争优势。美国、欧洲共同体和亚洲国家在制定积极的目标和投资以实现这些目标方面已经超过了加拿大——让电动汽车上路并建立新的汽车工业。为了在这一领域获得竞争优势，需要协调努力，从学术研究开始，一直到成功的商业化，以实现这个不断发展的行业的全部利益。*全球研发工作专注于提高电动汽车的性能驱动车辆已将电池性能视为关键瓶颈，阻碍了该技术的完全或立即采用。如今的电池组价格昂贵，并且只能存储相对较少的能量。在目前的情况下，电动汽车无法满足北美长途日常通勤的需求，PI认为这也是通用汽车雪佛兰Volt消亡的关键原因。通用汽车目前的努力是在 2015 年至 2016 年重新设计并推出这款汽车 [2]。*虽然通过新材料的开发，提高电池功率的研究工作正在全面展开，但能量收集技术可以在扩展电池功率方面发挥至关重要的作用和车辆操作范围。目前采用的关键能量收集技术是基于再生制动。尽管这项技术对于更频繁使用制动器的城市驾驶来说更有意义，但在稳态高速公路运行期间（这是北美平均日常通勤的主要部分），再生制动器在为电池充电方面效果较差。*我对当前提案的愿景旨在通过可行的研究计划开发一种独特且创新的能量收集技术，有效捕获悬架系统中的振动能量，否则这些能量会被浪费。该系统预计能够收集足够的电力来为电池充电，同时在必要时还可用作主动行驶、操控和稳定性控制的执行器。我特别感兴趣的是实现一种硬件/软件智能系统，以在长途（低幅度高加速度）高速公路行驶期间从悬架中收集能量。 *拟议的研究将利用我在传感器和执行器方面的机电一体化研究专业知识，以及我在非线性动力学和控制系统方面成熟的理论背景，以实现带宽增强的再生悬架系统。拟议的研究计划将包括各种相互关联的项目，这些项目支持总部，并最终帮助该领域的加拿大初创公司（仅温哥华就有三个），这些项目的想法很好，但资源有限。本文讨论的想法代表了原创和创新的概念，最终将带来突破性的进步。这个为期五年的研究计划的成果是一个预商业化原型悬架系统，可以在能量产生和控制模式之间有效切换。