The invention relates to an anti-rollover control circuit of an electric vehicle, which is characterized in that a rollover threshold signal received by a rollover threshold correction circuit is filtered and then enters an amplifier taking an operational amplifier AR1 as a core, and after rollover threshold correction is carried out by target road condition adhesive force adjustment amplification times and target road condition turning radian correction, the rollover threshold signal is output to a division circuit in a rotating speed adjustment circuit; the rotating speed threshold signal is calculated by dividing the rotating speed signal by the coupled wheel tread centroid height ratio and the turning radian of the target road condition, then enters the comparator to be compared with the actual rotating speed signal, and enters the signal controller to limit the rotating speed of the electric automobile when the level is high. According to the steering adjusting circuit, a subtractor is adopted for carrying out difference value operation on the target road condition turning radian and an existing steering wheel angle, when a difference value signal is high, the signal enters a signal controller to adjust the steering wheel angle after being filtered by a voltage-regulator tube Z2 and an RC, and when the difference value signal is high, a triode Q3 is triggered to be conducted, so that the target road condition turning radian enters the rotating speed adjusting circuit, and simultaneously the rotating speed of the electric vehicle is adjusted. According to the anti-rollover control circuit, the response is fast, a received rollover threshold signal enters an amplifier with an operational amplifier AR1 as a core after being filtered, rollover threshold correction is conducted through target road condition adhesive force adjustment amplification times and target road condition turning radian correction, the problem that a predicted rollover critical value is much larger than an accurate value is solved, and the rollover threshold correction method is suitable for the electric vehicle. And the precision of the rollover threshold signal is improved.
本发明涉及电动汽车防侧翻控制电路,侧翻阈值校正电路接收的侧翻阈值信号经滤波后,进入运算放大器AR1为核心的放大器,由目标路况附着力调节放大倍数、目标路况转弯弧度修正进行侧翻阈值校正后,输出到转速调节电路中除法电路,与耦合后的轮距质心高度比和目标路况转弯弧度相除,计算出转速阈值信号,之后进入比较器与实际转速信号进行比较,高电平时进入信号控制器以限制电动汽车的转速,所述转向调节电路采用减法器对目标路况转弯弧度与现转向盘角度进行差值运算,差值信号高时,经稳压管Z2、RC滤波后进入信号控制器以调节转向盘角度,差值信号较高时,并触发三极管Q3导通,使目标路况转弯弧度进入转速调节电路,实现同时调节电动汽车的转速,本发明的响应快,接收的侧翻阈值信号经滤波后,进入运算放大器AR1为核心的放大器,由目标路况附着力调节放大倍数、目标路况转弯弧度修正进行侧翻阈值校正,解决预测的侧翻临界值比精确值大很多的问题,提高侧翻阈值信号的精度。
Anti-rollover control circuit of electric vehicle
电动汽车防侧翻控制电路
2021-05-07
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Anti-rollover control method for active rollover vehicle
European Patent Office | 2024
|