Flexible architecture facilitates features integration into electric power steering
April 25, 2012 // Christoph Hammerschmidt
Nexteer Automotive has developed an electronic architecture for its electric power steering (EPS) systems that will make integration of new electronic features faster and provide greater functional safety. The architecture gives car manufacturers a single, customizable 12-volt platform for all passenger vehicle types, from low-cost micro-cars to the highest-specification luxury SUVs.
The architecture will enable manufacturers to introduce complex steering functions, claims Nexteer. Bertram Moeller, Network leader Systems Engineering Europe, Nexteer Automotive elaborated: "Instead of using standardized architectures for different vehicles classes, Nexteer's single, flexible architecture adapts to suit individual customer requirements and future-proof platforms. The architecture also allows us to provide more power to the EPS, so that it can steer any passenger vehicle using a standard 12-volt supply.”
Development of electrical architectures for EPS is driven by a number of related factors. The introduction of new functional safety standard ISO 26262 is a major driver with compliance made more important after recent high-profile competitor product recalls. The introduction of the Autosar standardized software architecture also increases CPU memory requirements. At the same time a rise in the number of more complex functions, such as lane-keeping assistance, where multiple systems communicate, has increased the need for new communication structures, such as dual CANbus and FlexRay.
Whereas a few years ago, customer specification sheets contained just two or three steering functions, a list of 20 is now common. To provide the substantial increase in processing power needed, Nexteer is using a new family of ISO 26262-compliant dual-core processors scalable in memory to 10 times than today with much higher processing speed. The first full implementation of the new electrical architecture enters production in 2013.
Steering, along with the brake system, is a safety-related vehicle system. It is also the primary interface with the vehicle and road surface. Nexteer's in-house software expertise enables it to deliver complex functions based on electronic control of the motor and its diagnostics that improve the driving experience and vehicle performance.
"Functions such as pull compensation, which keep the steering straight on crowned roads, and wheel imbalance rejection, which filters uncomfortable wheel vibrations, have significantly reduced warranty issues for Nexteer customers,” added Moeller. “The new architecture provides the processing power, functional safety, robust vehicle communication and standardized software required to introduce further functions such as lane-keeping assistance that coordinate with other vehicle systems. This intelligent approach will make it simpler for OEMs to offer customers new functions throughout vehicle lifecycles.”
The new architecture is widely scalable. At the entry level, a simplified control platform offers a low-cost system for economy cars and emerging markets, with the flexibility to add more sophisticated features for future models. For premium platforms, the modular nature of the architecture allows a high level of feature flexibility to enable a wide range of options and a development path into the future.
The introduction of the new architecture will integrate compliance to the ISO 26262 standard into Nexteer's core development process and hardware design, making the development of new functions and the fulfillment of customer requirements faster.
For more information, visit www.nexteer.com
Floating surge stopper provides unlimited overvoltage protection
May 17, 2013
Protecting sensitive electronic circuitry from voltage transients is an essential part of any system be it automotive, industrial, ...
Altera to integrate Enpirion power interfaces into its FPGAs
Automation CAN group plans permanent interoperability test capability
Opening up new user-interaction scenarios with Time-of-Flight measurements
Goepel electronic initiates Cooperation Network with EMS companies
The number of charging stations for electrical vehicles is expected to soar by 20220, study says
May 17, 2013
The number of electric vehicle charging stations is set to soar globally by 2020, supporting a shift in driving away from ...
In automotive lighting, LEDs still lacks of horsepower, study says
Ultra-low-power SoC supports world's smallest Bluetooth location stickers
Imec and Renesas collaborate on ultra-low power short range radios
InterviewWireless control drives Atmel in Europe
Atmel's recent acquisition of Osmo Devices with a WiFi Direct design center in Cambridge and some key microcontroller launches has seen the company focus heavily on wireless control in Europe says Jörg ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
The development platform for i.MX 6Quad from element14 (built to the Freescale SABRE Lite design) is an evaluation platform featuring the powerful i.MX 6Q, a multimedia application processor with Quad ARM Cortex-A9 cores at 1.2 GHz from Freescale Semiconductor.
This month, Freescale and element14 are giving away five such platforms, worth £128.06 each, for EETimes Europe's readers to win. The platform helps evaluate the rich set of peripherals and includes a 10/100/Gb Ethernet port, SATA-II, HDMI v1.4, LVDS, parallel RGB interface, touch screen interface, analog headphone/microphone, micro TF and SD card interface, USB, serial port, JTAG, camera interface, and input keys for Android.
And the winners are...
In our previous reader offer, Pico Technology was giving away one of its recently launched PicoScope 3207B, a 2-channel USB 3.0 oscilloscope worth 1451 Euros. Lucky winner Mr L. Sanchez-Gonzalez from Spain should be receiving his PicoScope 3207B soon. Let's wish them some interesting findings with his projects.
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.