package com.mh.quartz.util;

import com.mh.quartz.domain.FuzzyLevel;

/**
 * @author LJF
 * @version 1.0
 * @project EEMCS
 * @description 风柜系统PID调节工具类
 * @date 2025-05-30 13:47:40
 */
public class AHUPIDControlUtil {

    private double kp = 2.0, ki = 0.1, kd = 0.0;
    private double integral = 0;
    private double previousError = 0;
    private static final double MAX_INTEGRAL = 100;
    private static final double MIN_INTEGRAL = -100;

    // 模糊增益修正比例
    private double deltaKpScale = 0.5;
    private double deltaKiScale = 0.01;
    private double deltaKdScale = 0.01;

    public double compute(double setTemp, double currentTemp, double deltaTime) {
        double error = currentTemp - setTemp;
        double dError = (error - previousError) / deltaTime;

        // 模糊映射
        FuzzyLevel eLevel = toFuzzyLevel(error);
        FuzzyLevel ecLevel = toFuzzyLevel(dError);

        // 获取PID参数调整
        FuzzyLevel kpAdjust = FuzzyRuleBase.getKpAdjust(eLevel, ecLevel);
        FuzzyLevel kiAdjust = kpAdjust; // 简化处理
        FuzzyLevel kdAdjust = kpAdjust;

        kp += fuzzyDeltaToValue(kpAdjust, deltaKpScale);
        ki += fuzzyDeltaToValue(kiAdjust, deltaKiScale);
        kd += fuzzyDeltaToValue(kdAdjust, deltaKdScale);

        // 限幅
        kp = Math.max(0, Math.min(kp, 10));
        ki = Math.max(0, Math.min(ki, 1));
        kd = Math.max(0, Math.min(kd, 1));

        // PID 计算
        // 积分项限幅
        integral += error * deltaTime;
        integral = Math.max(MIN_INTEGRAL, Math.min(MAX_INTEGRAL, integral));
        double output = kp * error + ki * integral + kd * dError;
        System.out.println("计算输出值：" + output + "，误差：" + error + "，误差变化：" + dError);
        previousError = error;

        // 输出冷冻水阀开度，限制在0~100%
        return Math.max(0, Math.min(100, Math.abs(output)));
    }

    // 将数值误差映射为模糊等级
    public static FuzzyLevel toFuzzyLevel(double value) {
        if (value <= -3) return FuzzyLevel.NB;
        else if (value <= -2) return FuzzyLevel.NM;
        else if (value <= -1) return FuzzyLevel.NS;
        else if (value <= 1) return FuzzyLevel.ZO;
        else if (value <= 2) return FuzzyLevel.PS;
        else if (value <= 3) return FuzzyLevel.PM;
        else return FuzzyLevel.PB;
    }

    // 将模糊等级转为实际数值调整量
    public static double fuzzyDeltaToValue(FuzzyLevel level, double scale) {
        switch (level) {
            case NB: return -3 * scale;
            case NM: return -2 * scale;
            case NS: return -1 * scale;
            case ZO: return 0;
            case PS: return 1 * scale;
            case PM: return 2 * scale;
            case PB: return 3 * scale;
            default: return 0;
        }
    }

}