Two exhaust pipes, one in front and one behind. The purpose is that the computer can control the air-fuel ratio more accurately according to the signal comparison of two sensors. Because there is only a gap of a few tenths of a millimeter between the rotating ring and the stationary ring of the resolver, and the upper part of the sensor shaft is sealed in a metal shell, an effective shielding is formed, so the anti-interference ability is strong.

Function of sensor

The sensor provides a power supply of 15V, the crystal oscillator in the excitation circuit generates a square wave of 400Hz, and the power amplifier generates an AC excitation power supply, which is transmitted from the static primary coil to the rotating secondary coil through the energy loop transformer, and the high-precision regulated power supply consisting of a reference power supply and dual operational amplifiers generates a precise DC power supply of 4.5V

When the elastic shaft is twisted, the mV-level strain signal detected by the strain bridge is amplified into a strong signal of 1.5V 1V by the instrument amplifier, and then converted into a frequency signal by the V and F converters, which is transmitted from the rotating primary coil to the stationary secondary coil through the signal ring transformer, filtered by the signal processing circuit on the shell, and shaped to obtain a frequency signal proportional to the torque on the elastic bearing, which can be provided to the special secondary instrument.