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US 7,689,395 B2Granted
6-axis road simulator test system
OwnerFaycal Namouninventor
Life of this patent
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Abstract
A 6-axis road simulator test system is disclosed which allows for dynamic simulation of vehicles on road surfaces in a controlled environment for development or production testing conditions. The system turns the vehicle wheels, or provides resistance to turning of the wheels while subjecting each of the vehicle's wheel in up to 6-axis of displacement, based on road profile simulation.
Claims20
A system for simulating a road test of an automotive vehicle on a simulator adapted to receive the vehicle thereon, the system comprising:
- electronic memory for storing a set of data representing a desired response from a source vehicle driven over a road surface;
- and
- at least one road simulator actuator, having an actuator head supporting a belt configured to drive a wheel on the vehicle, and further having a first plurality of hydraulic actuators capable of imparting forces in a first direction onto the head in response to the data, a second plurality of hydraulic actuators capable of imparting forces in a second direction onto the head in response to the data, and a third hydraulic actuator capable of imparting forces in a third direction onto the head in response to the data, and wherein the hydraulic actuators are configured to move the head in 6 axes of freedom;
- and
- an automatic belt-tensioner configured to apply forces to at least one support drum in communication with the belt, and wherein said automatic belt-tensioner functions to automatically adjust the tension of the belt as a function of at least one of belt speed, belt tension or wheel speed, wherein the tensioning mechanism allows for real time lateral guiding of the belt with closed loop control.
2 more elements
Dependencies are inferred from the claim text.