The invention relates to an electric vehicle speed control system and control method based on PID control, and solves the problems of slow vehicle speed adjustment, overshoot and the like of a current vehicle control system. Comprising a speed error input module, a PID controller and a torque output module. Comprising the following steps that 1, the current vehicle speed V1, the maximum vehicle speed V, the current motor rotating speed Spd1 and the motor torque T1 are obtained; 2, according to the current rotating speed Spd1 of the motor, the required torque T2 of the motor at the next moment is obtained; 3, a step-by-step PID regulator is set, the first-stage regulation limit value is M1, and the second-stage regulation limit value is M2; when V-V1gt; when M1 is greater than M1, the P value is increased to enable the vehicle speed V to approach the maximum vehicle speed V; when M2lt; v-V1lt, V-V1lt; when M1 is greater than M1, the P value is reduced, and the I value is increased to prevent system overshoot; 4, when the vehicle speed error is smaller than the second-level limit value M2, control is stopped so that the vehicle speed can be stabilized at the target speed; and 5, limiting the upper and lower limits of integration to avoid the problem of integration saturation. According to the invention, the vehicle speed can be controlled more accurately and stably.
本发明涉及一种基于PID控制的电动车速度控制系统及控制方法,解决了目前车辆控制系统车速调节缓慢、超调过大等问题。包括速度误差输入模块、PID控制器、扭矩输出模块。包括以下步骤:步骤1:获取当前车速V1、最高车速V、当前电机转速Spd1和电机扭矩T1;步骤2:根据当前电机转速Spd1,求得下一时刻电机需求扭矩T2;步骤3:设置分步PID调节器,一级调节限值为M1,二级调节限值为M2;当V‑V1>M1时,增大P值,使车速V向最高车速V靠拢;当M2
Electric vehicle speed control system and control method based on PID (Proportion Integration Differentiation) control
一种基于PID控制的电动车速度控制系统及控制方法
2025-02-21
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 |
European Patent Office | 2024
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