Search Results

Electric powertrains are quiet, efficient, and provide a better controllability over their conventional counterparts. There are also many other areas in off-highway and commercial vehicles that are beginning to apply Electric Drive technology. The heart of these systems is the Electric Drive control technology being done on ECUs. Due to the complexity of the systems and need for demanding control applications, these ECU systems require a level of closed-loop testing that previous standard bench test-methods cannot supply. The common approach to testing these systems is using Hardware-in-the-loop (HIL) systems designed for electric drive. This paper describes a typical HIL simulation platform for testing control systems for electric powertrain. The scope of this paper covers the standard practices in HIL simulation of electric drives, giving a general overview of the necessary interfaces and simulation technology.

Ford Motor Company has recently implemented a Hardware-In-the-Loop (HIL) testing system for a new, highly complex, hybrid electric vehicle (HEV) Electronic Control Unit (ECU). The implementation of this HIL system has been quick and effective, since it is based on proven Commercial-Off-The-Shelf (COTS) automation tools for real-time that allow for a very flexible and intuitive design process. An overview of the HIL system implementation process and the derived development benefits will be shown in this paper. The initial concept for the use of this HIL system was a complete closed-loop vehicle simulation environment for Vehicle System Controller testing, but the paper will show that this concept has evolved to allow for the use of the HIL system for many facets of the design process.

Over the last several years, Hardware-In-the-Loop (HIL) simulators have become the de-facto standard for aerospace control systems verification and validation. The primary purpose of these HIL systems is to allow rapid development of Electronic Control Unit (ECU) software and simultaneous controls engineering while the target plant platforms are concurrently being implemented. dSPACE HIL simulators are based on proven Commercial-Off-The-Shelf (COTS) hardware and software tools for real-time that allow for a very flexible and intuitive implementation process. Many of the development and testing issues with aerospace ECUs can now be handled readily with accessible tools. An overview of HIL simulator components, available tools and technologies, and some of the associated implementation benefits will be shown in this paper.

This paper explores how to enhance your autonomous system (AS) testing capabilities and quality assurance using a completely automated hardware-in-the-loop (HIL) test environment that interfaces to or simulates autonomous sensor technology, such as cameras, radar, LIDAR, and other key technologies, such as GNSS/maps and V2X communication. The key to performing such real-time testing is the ability to stimulate the various electronic control units (ECUs)/sensors through closed-loop simulation of the vehicle, its environment, traffic, surroundings, etc., along with playback of captured sensor data and its synchronization with key vehicle bus and application data. The latest technologies are introduced, which allow for direct sensor data injection to ECUs/line replaceable units (LRUs) for test interaction and stimulus, in addition to dynamic, on-the-fly modification of sensor data streams. It will be shown how these techniques are integrated with current HIL systems.