BRAKING SYSTEMS
AUTONOMY ON A
GLOBAL SCALE IN A CLOSE DIALOGUE WITH A COMMERCIAL VEHICLE MANUFACTURER, HALDEX HAS BEEN SELECTED TO COMMENCE THE CONCEPT PHASE OF AN AUTONOMOUS VEHICLE BRAKING SOLUTION.
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wedish braking technology company, Haldex, is set to lead a development The result, according to Haldex, is 15 contract of its ‘Scalable Brake System’ by the end of this year. per cent less stopping distance, but also the With the advent of autonomous driving, vehicle system architecture ability to ensure that the vehicle runs in the is about to be re-written. Currently, the vehicle operator manages the path it is intended to, with a stability and integration of propulsion, braking and steering. To reach full autonomy, Haldex is predictability not seen with other technology adamant that the subsystems need to be able to accurately control and communicate that is available today. for the system to be able to analyse the data and make correct decisions. “When replacing the driver, you need redundancy on different levels,” Jähnke says. System integration, according to Haldex, is the key for autonomous driving “We are not unique to provide steering by to become successful. System integration requires open communication, according to Andreas Jähnke, braking, but our wheel end accuracy with the SVP R&D at Haldex. FABV is unique.” “Today, only selected data of the wheel end performance is shared in the System integration is not limited to the system, even though most of a vehicle’s behavior is determined by the wheel truck and furthermore the performance of the combination of truck and trailer will be end performance,” he says. “Haldex wants to change that. We fully believe in open systems where the directly affected by how the subsystems are OEM gets full access to the data from the wheel end. working as part of the full vehicle system “By developing the brake systems jointly with OEMs, we re-shape the principles which includes trucks and trailers, according for the vehicle system architecture. We know that new and old technology will to Jähnke. “At Haldex we are developing the Scalable Brake System to make it feasible live side by side for many years. By separating the software from the hardware, you can use the same software functionality to execute different mechanical for our partners to optimise the safety and tasks, hence you can have a vehicle structure which can run both pneumatic and performance of the buses, trucks, trailers and ‘movers’ of tomorrow. electromechanical brakes. “We also want to move away from the principle of the [Electronic Braking System www.haldex.com – EBS] being a black box that is the central hub Haldex’s Electromechanical Disc Brake EMB is currently for the intelligence in the brake system. To build being tested on electric buses with positive results. a scalable system with maximum control and predictability, more technology and intelligence should be placed at the wheel end,” he says. One of the new products from Haldex that is based on this concept is the Fast Acting Brake Valve (FABV) – it is a high-performance valve, placed at the wheel end together with an Electronic Control Unit (ECU), that is reported to act ten times faster than conventional modular based systems.
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