Adaptive Active Suspension System With Road Preview

a technology of suspension control system and road preview, which is applied in the direction of using reradiation, cycle equipment, instruments, etc., can solve the problems of system response not being as timely and effective, vehicle encountering exceptional (abnormal) road conditions, and being susceptible to damag

Active Publication Date: 2014-07-10
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Occasionally, a vehicle encounters exceptional (abnormal) road conditions, such as debris, severe potholes, bumps and the like.
Due to the need to interact with the abnormal road feature prior to operating the actuatable suspension elements, the system response may not be as timely and effective as it might otherwise be, because of factors such as the dynamic response times of the system as a

Method used

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  • Adaptive Active Suspension System With Road Preview
  • Adaptive Active Suspension System With Road Preview
  • Adaptive Active Suspension System With Road Preview

Examples

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Embodiment Construction

[0019]FIG. 1 is a schematic diagram of a vehicle control system 12 incorporating an active suspension system in accordance with an embodiment of the present invention. Control system 12 includes an array of vehicle sensors designed to monitor various vehicle parameters and environmental conditions external to the vehicle. The sensor array includes various types of sensors operatively coupled to one or more system control modules so as to enable transmission of the sensor inputs to the control module(s). The sensor array may include individual sensors or groups of associated sensors (such as radar, lidar, laser scan, or vision / camera systems) for detecting aspects of the vehicle environment and for detecting, for example, a pending collision; inertial sensors (for example, a known or suitable inertial measurement unit (IMU) 22), various wheel speed sensors 14f, road condition sensors 102 if direct measurements of certain road conditions are possible, rain sensors 14a, suspension heig...

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PUM

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Abstract

A method for controlling an active suspension includes steps of determining a dimension of a road abnormality ahead of the vehicle and comparing the dimension with a vehicle dimension. Responsive to the comparison, the abnormality is classified as one type of a plurality of predetermined types. Responsive to a height dimension of the abnormality, the abnormality is further classified as having one of a small, medium, or large severity. The suspension is controlled responsive to the type and severity.

Description

BACKGROUND OF THE INVENTION[0001]The embodiments of the present invention relate to vehicle suspension control systems and, more specifically, to a vehicle suspension control system adaptable to predicted and actual abnormal road conditions.[0002]Passenger vehicles are designed to drive on a variety of road surfaces and geometric conditions. Occasionally, a vehicle encounters exceptional (abnormal) road conditions, such as debris, severe potholes, bumps and the like. Adaptive or active suspension systems enable selective adjustment of the suspension characteristics such as damping and stiffness, responsive to the contact between the vehicle wheels and the abnormal road feature. This helps improve the vehicle's ride comfort, handling, and safety.[0003]However, in order for conventional active suspensions to operate the actuatable elements of the suspension system responsive to the abnormal road feature, the vehicle wheels must contact the road feature. Due to the need to interact wit...

Claims

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Application Information

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IPC IPC(8): B60G17/016G01S17/931
CPCB60G17/016G01S17/88B60G17/018B60G17/0165B60G2401/21G01S17/936B60G17/015B60G17/0195B60G17/02B60G17/06B60G2400/0521B60G2400/0522B60G2400/0523B60G2400/102B60G2400/104B60G2400/106B60G2400/20B60G2400/25B60G2400/52B60G2400/96B60G2401/14B60G2401/16B60G2500/10B60G2500/20B60G2500/30G01S17/931B60G2400/82
Inventor LU, JIANBOFILEV, DIMITAR P.HROVAT, DAVORTSENG, ERUC HONGTEIHOFFMANN, UWEBAALES, SIMONSEEMANN, MICHEAL
Owner FORD GLOBAL TECH LLC
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