A sealing assembly for a bearing assembly. The improved techniques are particularly well suited for use in computer systems where data can be logically organized in files presented in a file system. The UV light is launched into the MZI filter through one of its input ports in order to achieve the phase adjustment. In a \u201chost-controlled\u201d embodiment, the host computer calculates force values using the sensor data and other parameters of a host application program and sends the force values to the local microprocessor, which directly provides the force values to actuators to apply forces to the user object. A lower shroud is aligned with the upper shroud by alignment posts and alignment post receivers and then raised into contact with the steering column. The controller activates the safety device if the change in impedance of the air coil exceeds a predetermined threshold.