High Integrity Actuation with embedded intelligence for steer by wire in ground

项目编号：TP/5/POW/6/I/ h0248k本项目旨在开发一种低成本的智能驱动系统，用于安全关键应用和恶劣工作环境。总体目标是通过创新使用电力电子设备/配置和具有新型故障检测和容错控制的嵌入式智能，在开发具有三级冗余（即在系统存在两个主要故障时必须保持安全运行）的高完整性和可靠的驱动系统方面取得技术突破，并以低成本提高安全能力。在发生重大故障时，系统将保持正常控制，允许系统在寻求服务之前继续并完成任务。如果在第一个主要故障修复之前发生了第二个主要故障，必须有一个规定，以保持安全运行（可能在降低性能/速度）在有限的时间内，以便有足够的时间进行维修。该项目的一个关键目标是使用最少数量的主要组件提供高水平的执行器完整性（从而降低成本），而使用硬件冗余的传统解决方案需要使用三重执行器和相关控制，这将大大增加成本和系统复杂性。开发将集中在探索PM无刷执行器的固有冗余（最常用于高可靠性要求的应用），目的是减少组件数量和系统/机械复杂性。主要优点包括可靠和稳健的驱动系统，固有冗余和自我监测和控制；提高效率;更简单的机械结构，减少部件数量，从而降低成本。该项目将开发用于商业开发的原型，首先用于汽车行业的线控转向应用，然后扩展到其他安全关键应用。这种容错技术有望在要求苛刻的应用中取代液压或电磁致动器。线控转向系统具有巨大的全球市场潜力，并且在其他安全关键应用中具有许多溢出效益，以实现高可靠性的驱动。

High Integrity Actuation with Embedded Intelligence for Steer-by-WireTSB Project No: TP/5/POW/6/I/H0248KThis project is concerned with the development of a low-cost intelligent actuation system for safety-critical applications and for working in harsh working environment. The overall aim is to deliver a technological breakthrough in the development of a high integrity and reliable actuation system with an enhanced safety capability of three level redundancy ( i.e. safe operation must be preserved in the presence of two major faults in the system) at low costs, through the innovative use of power electronic devices/configuration and embedded intelligence with novel fault detection and fault-tolerant control. In the event of one major critical fault, the system will be expected to maintain the normal control allowing the system to continue and complete an assignment before seeking service. If a second major fault occurs before the first one is fixed, there must be a provision to maintain safe operation (probably at reduced performance/speed) for a limited period so that there is sufficient time for access to repair. A key objective for the project is to deliver a high level of actuator integrity with the use of minimal number of major components (hence reduced costs), whereas conventional solutions of using hardware redundancies would require the use of triple actuators and associated controls which would substantially increase the costs and system complexity.The development will be focussed on exploring the inherent redundancy of PM brushless actuators (most commonly used in applications with high reliability requirements), with the aim to reduce component number and system/mechanical complexity. Key benefits include reliable and robust actuation systems, inherent redundancy and self-monitoring & control; improved efficiency; simpler mechanical configuration, and reduced component number and hence costs. The project will be developing a prototype for commercial exploitation, firstly for steer-by-wire applications in automotive industry and then followed by expansions into other safety-critical applications. This fault-tolerant technology is expected to supersede and replace either hydraulic or EM actuators in demanding applications. There is huge global market potential for steer-by-wire systems, and many spill over benefits in other safety-critical applications for highly reliable actuation.