Torque signal compensation circuit of four-wheel driven system of electric automobile

Abstract

The invention discloses a torque signal compensation circuit of a four-wheel driven system of an electric automobile. The torque signal compensation circuit of the four-wheel driven system of the electric automobile comprises a torque signal collecting circuit, a detection calibration circuit and a frequency selection output circuit. The torque signal collecting circuit uses a torque sensor J1 with the model number being TQ-663 to collect the torque signal when the four-wheel driven system of the electric automobile works, the detection calibration circuit receives output signals of the torquesignal collecting circuit in two ways, the first way uses an operational amplifier device AR1, an operational amplifier AR2 and a variable resistance R3, capacitance C4 to form a peak value detectioncircuit to detect the signals, the second way uses controllable silicon VTL1 and a voltage-regulator tube D7 to form an abnormal signal detection circuit, the abnormal signals are fed back into the frequency adjustment circuit to adjust the output signal frequency of the frequency adjustment circuit, finally the frequency selection output circuit uses resistance R 14-resistance R 16 and capacitance C13-capacitance C15 to form a double-T frequency selection circuit to screen the signals with signal frequency, automatic frequency adjustment and calibration can be conducted on the torque signalin a signal transmission module in the four-wheel driven system of the electric automobile, and the error range of the signal is shortened.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to a torque signal compensation circuit of a four-wheel drive system of an electric vehicle. Background technique [0002] At present, the development of electric vehicles is getting better and better, which is also in line with the future development trend. Compared with traditional fuel vehicles, the performance of electric vehicles still has a certain gap, which needs to be continuously improved and developed. Among them, the four-wheel drive system of electric vehicles The torque of the vehicle determines the handling stability of the vehicle. Although the torque signal of the four-wheel drive system of the electric vehicle has an adjustment system to calibrate and stabilize the torque signal, it is then sent to the electric vehicle through the four-wheel drive system signal transmitting module of the electric vehicle. In the control terminal of the four-wheel drive system of t...

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Problems solved by technology

[0002] At present, the development of electric vehicles is getting better and better, which is also in line with the future development trend. Compared with traditional fuel vehicles, the performance of electric vehicles still has a certain gap, which needs to be continuously improved and developed. Among them, the four-wheel drive system of electric vehicles The torque of the vehicle determines the handling stability of the vehicle. Although the torque signal of the four-wheel drive system of the electric vehicle has an adjustment system to calibrate and stabilize the torque signal, it is then sent to the electric vehicle through the four-wheel drive system signal transmitting module of the electric vehicle. In the control terminal of the four-wheel drive system of the car, however, in practical applications, during the transmission of the torque signal in the signal transmission module of the four-wheel drive system of the electric car, the signal often has frequency hopping and attenuation, so that the signal still has a large error scope

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