Hydraulic Power Unit and Servo control System for an Existing Actuator

用于现有执行器的液压动力单元和伺服控制系统

• 批准号: 390029-2010
• 负责人: Youssef, Maged
• 金额: $ 10.93万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=443086
• 关键词: Hydraulic; Power; Unit; Servo; control

Funds are requested to purchase a 90-gallon per minute hydraulic power unit and a servo control system. They will replace the existing hydraulic power unit, which has an inadequate capacity (10 gallons per minute), and an outdated servo control system. The requested equipments will allow utilizing the full capabilities of an existing actuator, creating an adequate loading system that can: (1) achieve a maximum compressive load of 1459 kN and a maximum tensile load of 960 kN, (2) maintain a constant load while making observations and taking measurements, (3) apply dynamic loads, and (4) conduct load-control and displacement-control tests. The limitations of the current testing system are a major hurdle for the research programs of the four applicants. The load requirements for their tests require utilizing the actuator to its full capacity. The new control system allows conducting displacement-control tests, thus providing a critical safety measure for the expected level of loads. The ability to carry out dynamic testing is essential for several research projects, for instance on Shape Memory Alloys (SMAs) since their behaviour is affected by the rate of loading. The immediate research programs that require the new loading system include: (1) utilizing the unique properties of SMAs to achieve sustainable structures that need minor repair following exposure to earthquakes, (2) assessing the effect of corrosion on the local buckling stability of steel bridge members, (3) developing a new precast shear wall system that is easier and cheaper to construct, and (4) conducting research on concrete pipes reinforced using hybrid schemes of composite fibre-reinforced polymers and novel alloys, and on ductile ultra-high performance concrete. Technical support and replacement parts are not available for the existing loading system, which puts the research studies of a large number of HQP (listed in Forms 100 of the applicants) at a great risk. The applicants have the necessary funds for the operation and maintenance of the requested equipments. A full-time technician is available to operate, maintain, and manage this critically needed loading system.

要求提供资金购买一个每分钟90加仑的液压动力装置和一个伺服控制系统。它们将取代现有的液压动力装置，该装置的容量不足（每分钟10加仑），而且伺服控制系统过时。所要求的设备将允许利用现有致动器的全部功能，创建适当的加载系统，该系统可以：（1）实现1459 kN的最大压缩载荷和960 kN的最大拉伸载荷，（2）在进行观察和测量时保持恒定载荷，（3）施加动态载荷，以及（4）进行载荷控制和位移控制测试。目前测试系统的局限性是四个申请人研究项目的主要障碍。测试的负载要求要求充分利用执行器。新的控制系统允许进行位移控制测试，从而为预期的负载水平提供关键的安全措施。进行动态测试的能力对于几个研究项目至关重要，例如形状记忆合金（SMA），因为它们的行为受到加载速率的影响。需要新装载系统的即时研究计划包括：（1）利用SMA的独特性能来实现在地震后需要轻微维修的可持续结构，（2）评估腐蚀对钢桥构件的局部屈曲稳定性的影响，（3）开发一种更容易且更便宜的新型预制剪力墙系统，（4）研究采用复合纤维增强聚合物和新型合金的混合方案增强的混凝土管和韧性超高性能混凝土。现有的装载系统并没有技术支援和更换零件，令大量HQP（申请人的表格100中列出）的研究工作面临很大风险。申请者拥有操作和维护所要求设备的必要资金。一名全职技术人员可操作，维护和管理这一急需的装载系统。