SBIR Phase I: Feed Forward Hydraulic Ripple Cancellation

SBIR 第一阶段：前馈液压脉动消除

• 批准号: 1549239
• 负责人: Jack Ekchian
• 金额: $ 14.98万
• 依托单位: Levant Power Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-01-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1549239&HistoricalAwards=false
• 关键词: SBIR; Phase; Feed; Forward; Hydraulic

The broader impact/commercial potential of this project is expected to be realized in two principal areas. There have been extensive efforts to mask hydraulic noise, but the proposed effort is directed at eliminating the hydraulic ripple before it is created at the source. Traditional passive methods of masking noise are insufficient because they work effectively only in a limited operating range. This is inadequate because hydraulic systems typically must operate over a wide range of speed and loads. First this project is expected to make hydraulic active suspension systems quieter, more responsive and robust and, therefore, more readily and widely adopted by industry. The resulting likely increased use of active suspension systems will, therefore, have the added societal benefit of improved vehicle safety and comfort. This project is also expected to have a much wider impact on the hydraulic noise that has been a chronic pain point for the hydraulics industry for decades. It will allow for the manufacture of quieter and more durable hydraulic pumps for many applications beyond active suspension.This Small Business Innovation Research (SBIR) Phase I project is an investigation of the feasibility of using an active buffer to eliminate flow ripple from a hydraulic pump, such as a gerotor pump. In a representative hydraulic system, the gerotor pump is at the heart of an advanced electro-hydraulic, active suspension actuator. Due to their geometry, positive displacement pumps provide small fluctuations in their fluid flow rate at a constant pump RPM. These small changes in flow rate create pressure fluctuations that can create significant mechanical movement that results in objectionable or unhealthy noise. The proposed effort is directed specifically at mitigating acoustic and structural vibration noise caused by such a pump. The proposed effort will utilize a combination of advanced experimental and computer simulation techniques to demonstrate the viability of the approach in the representative hydraulic system (an active suspension actuator). Hydraulic system noise is a widespread pain point in numerous applications involving hydraulic pumps. A key difficulty with hydraulic pumps is that they are often required to perform over a wide range of speeds and pressures. Conventional noise control devices typically can only be optimized for a relatively narrow portion of this range.

该项目的更广泛影响/商业潜力预计将在两个主要领域实现。已经有广泛的努力来掩盖液压噪声，但所提出的努力是针对消除液压涟漪之前，它是在源创建。传统的无源噪声屏蔽方法是不够的，因为它们只能在有限的工作范围内有效工作。这是不够的，因为液压系统通常必须在宽范围的速度和负载下操作。首先，该项目预计将使液压主动悬架系统更安静，反应更灵敏，更坚固，因此更容易被工业界广泛采用。因此，由此可能增加的主动悬架系统的使用将具有提高车辆安全性和舒适性的附加社会效益。预计该项目还将对液压噪声产生更广泛的影响，这是液压行业几十年来的一个长期痛点。这将允许制造更安静和更耐用的液压泵，用于主动悬架以外的许多应用。这个小型企业创新研究（SBIR）第一阶段项目是使用主动缓冲器消除液压泵（如摆线泵）流量涟漪的可行性研究。在典型的液压系统中，摆线泵是先进的电动液压主动悬架致动器的核心。由于它们的几何形状，正排量泵在恒定的泵RPM下提供它们的流体流速的小波动。流速的这些微小变化会产生压力波动，压力波动会产生显著的机械运动，从而导致令人讨厌或不健康的噪音。所提出的努力特别针对减轻由这种泵引起的声学和结构振动噪声。拟议的努力将利用先进的实验和计算机模拟技术相结合，以证明该方法的可行性，在代表性的液压系统（主动悬架执行器）。液压系统噪声是涉及液压泵的许多应用中普遍存在的痛点。液压泵的一个主要困难是，它们通常需要在很宽的速度和压力范围内工作。传统的噪声控制装置通常只能针对该范围的相对窄的部分进行优化。