Control of Pressure Build-up inside a Power Steering Gear through Active Flow Control without Throttling Purdue University / ZF TRW Commercial Steering

Format:

Conference/Event

Author/Creator:

Nhila, Nhila, author.

Contributor:

Williams, Daniel E., 1951-

Conference Name:

SAE 2015 Commercial Vehicle Engineering Congress (2015-10-06 : Rosemont, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

AbstractToday's hydraulic steering systems suffer from poor efficiency due to their use of throttling valves to build pressure inside the steering gear. In this work, we propose a novel way to build and control pressure by controlling the flow from the pump and without throttling. As a result, such a system will be more energy efficient. Moreover, the ability to control pressure inside a steering gear, and thus assistance torque, allows the steering system to become an active closed-loop system rather than a passive open-loop system. Specifically, by controlling pressure, one can closely control the hand wheel torque the operator feels. Consequently, the new pressure control concept has the potential to not only significantly improve the efficiency of steering systems, but also offers the numerous benefits of torque overlay without the use of an electric motor. Such benefits include the possibility of doing closed-loop hand wheel torque control, autonomous steering, lane keeping assistance, stability control with steering, et cetera

Notes:

Vendor supplied data

Publisher Number:

2015-01-2725

Access Restriction:

Restricted for use by site license