Torque monitoring system of four-wheel-drive system of electric automobile

Abstract

The invention discloses a torque monitoring system of a four-wheel-drive system of an electric automobile. The torque monitoring system of the four-wheel-drive system of the electric automobile comprises a torque signal collection circuit, a push-pull frequency modulation circuit and a limiting filtering circuit; the torque signal collection circuit uses a torque sensor J1 with model of TQ-663 tocollect a torque signal during the working of the four-wheel-drive system of the electric automobile; the push-pull frequency modulation circuit uses a triode Q1 and a triode Q2 to form a push-pull circuit to receive a signal output by the torque signal collection circuit and uses resistors R13-R15 and capacitors C5-C7 to form a double T frequency selection circuit to screen a signal with single frequency; and finally, the limiting filtering circuit uses a diode D5 and a diode D6 to form a switch circuit to limit the signal and uses an inductor L1 and a capacitor C9 and a capacitor C10 to forma Pi-type filtering circuit to filter the signal and output the filtered signal. A torque signal in a signal transmission module of the torque monitoring system of the four-wheel-drive system of theelectric automobile can be automatically frequency-modulated and calibrated, and the signal is compensated to prevent frequency hopping and attenuation phenomenon of the signal.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a torque monitoring system 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 electric vehicle determines the handling stability of the vehicle. The torque monitoring system of the four-wheel drive system of the electric vehicle is to monitor the torque state of the four-wheel drive system in real time. The four-wheel drive system of the electric vehicle is convenient for timely adjustment to improve the handling stability of the vehicle. , In practical application, there is still ...

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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 electric vehicle determines the handling stability of the vehicle. The torque monitoring system of the four-wheel drive system of the electric vehicle is to monitor the torque state of the four-wheel drive system in real time. The four-wheel drive system of the electric vehicle is convenient for timely adjustment to improve the handling stability of the vehicle. , in practical application, there is still a certain error in the torque signal transmission process of the torque monitoring system signal transmission module of the four-wheel drive system of the electric vehicle, because the signal often has frequency hopping and attenuation phenomena, so that the signal error cannot be reduced

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