Abstract: A mass damper for use with a drive shaft center support bearing is located on a non-rotating portion of the bearing and is suspended on a spring element for free vibration and has a resonance that is selected to be the same as that which would otherwise be communicated to the vehicle through the bearing by the drive shaft and drivetrain components. The two embodiments are each tunable so that the damper can be set to have different resonant vibration characteristics, as required for use with different drive shaft and drivetrain configurations.

Abstract: A mass damper for use with a drive shaft center support bearing is located on a non-rotating portion of the bearing and is suspended on a spring element for free vibration and has a resonance that is selected to be the same as that which would otherwise be communicated to the vehicle through the bearing by the drive shaft and drivetrain components. The two embodiments are each tunable so that the damper can be set to have different resonant vibration characteristics, as required for use with different drive shaft and drivetrain configurations.

Abstract: The present invention provides a transmissibility shaping control for active suspension systems. The T-shaping control is a combination of several sub-strategies using the dynamic information in the frequency domain. Each strategy works dominantly in a certain frequency range to achieve a desirable transmissibility for better suspension performance in the corresponding frequency range. Different sub-strategies for different frequency ranges include stiffness control, skyhook control, groundhook control, and various damping levels. In addition, an embodiment is provided utilizing tunable compressible fluid struts in an active vehicle suspension.

Abstract: A magnetorheological fluid actuated damper. At least a first and a second cylinder with the first cylinder positioned axially within the second cylinder are provided. A gap is formed between the cylinders. The second cylinder is mounted to a stationary mount of the vehicle chassis and a control arm is mounted at an end of the first cylinder. The first cylinder is mounted on bearings to allow it to rotate relative to the chassis. The gap between the cylinders contains a magnetorheological fluid having an adjustable viscosity in reaction to the application of a magnetic field. A magnetic field is generated over the fluid in the gap.

Abstract: A magnetorheological fluid actuated damper. At least a first and a second cylinder with the first cylinder positioned axially within the second cylinder are provided. A gap is formed between the cylinders. The second cylinder is mounted to a stationary mount of the vehicle chassis and a control arm is mounted at an end of the first cylinder. The first cylinder is mounted on bearings to allow it to rotate relative to the chassis. The gap between the cylinders contains a magnetorheological fluid having an adjustable viscosity in reaction to the application of a magnetic field. A magnetic field is generated over the fluid in the gap.