Equipment for high speed motion control research

世界各地不断上涨的燃油价格和更严格的政府法规促使研究人员研究提高燃油经济性和减少发动机排放的新技术。其中一项技术是电子控制气门正时，与传统发动机相比，该技术有望节省10%的燃料。这主要是通过减少泵送损失，引入汽缸停用和确保即使在发动机瞬态运行时也能实现最佳气门正时来实现的。这些策略已经为人所知多年，但迄今为止所有的阀门执行系统都存在速度不足、产生不可接受的噪音、高功耗和可靠性差的问题。申请人建议研究机械弹簧组件提供必要的加速度和电磁组件确定时间的设备。他将优化几种潜在设计的机械、电气和磁性组件，以达到最佳设备。RTI拨款将用于获得设计和测试此类设备的两个重要组成部分：需要一个可靠的参考传感器系统，能够承受内燃机的恶劣操作条件，以开发强大的控制算法。为了将控制算法从台架环境转移到实际发动机实验中，需要一个快速成型控制系统。这需要一个非常强大的实时计算系统，因为非线性自适应控制方案，在线轨迹适应和非线性观测器是在20kHz的采样率下实现的。RTI补助金是一个至关重要的研究组成部分，将允许申请人推进汽车工业运动控制和燃油效率的最先进技术。

Rising fuel prices and more stringent government regulations around the world are driving researchers to investigate new technologies for improving fuel economy and reducing engine emissions.  One such technology is electronically controlled valve timing which promises to achieve 10% in fuel savings compared to traditional engines.  This is primarily accomplished by reducing pumping losses, introducing cylinder deactivation and ensuring optimal valve timing even in transient engine operations.  These strategies have been known for many years, but all valve actuation systems suggested to date suffer from a combination of insufficient speed, unacceptable noise generation, high power consumption, and poor reliability.The applicant proposes to research devices where a mechanical spring assembly provides the necessary acceleration and electromagnetic components determine timing.  He will optimize mechanical, electrical, and magnetic components of several potential designs in order to arrive at an optimum device.  The RTI grant will be used to obtain two important components for designing and testing such devices:1.) A reliable reference sensor system that can withstand the harsh operating conditions of an internal combustion engine is needed to develop robust control algorithms2.) A rapid prototyping control system is needed to transfer the control algorithms from the bench-top environment to actual engine experimental.  This needs to be a very powerful real-time computing system, because nonlinear adaptive control schemes, online trajectory adaptations and nonlinear observers are implemented at sampling rates of 20kHz.The RTI grant is a crucial research component that will allow the applicant to advance the state of the art technologies of motion control and fuel efficiency for the automotive industry.