Theory Of Operation

WARNING: This page is about a different variant/trim than selected.

The motor position sensor (Resolver) is monitored by the Motor Control Processor (MCP). The MCP monitors the angular position, speed and direction of the motor generator based upon the signals of the resolver type position sensor. The position sensor, or resolver, contains a drive coil, two driven coils, and an irregular shaped metallic rotor. The metallic rotor is attached to the shaft of the motor generator. At ignition ON, the MCP outputs a fixed excitation signal to the drive coil. The drive coil excitation signal creates a magnetic field surrounding the two driven coils and the irregular shaped rotor. The MCP then monitors the two driven coil circuits for a return signal. The position of the irregular metallic rotor causes the magnetically induced return signals of the driven coils to vary in size and shape. A comparison of the two driven coils signals allows the MCP to determine the exact position, speed and direction of the motor generator. The motor Resolver is integrated into the motor and is not serviceable.