A wireless encoder system facilitates operation and control of a motor, such as linear motor. The light source emits light which is substantially parallel to the coordinate input plane. The mounting bracket can securely affixes the station to a surface. The grinder also includes a power source for rotating the grinding structure. These strategies utilize the inversion of the cylinder outlet temperature virtual sensor as well as a new turbine outlet temperature virtual sensor to determine the charge flow required to achieve the desired turbine outlet temperature given the current turbine inlet and outlet pressure, SOI, charge pressure, charge temperature, fueling, and engine speed. The exciting beams from the first light emitting elements are reflected by the first reflector.