208 lines
6.9 KiB
C
208 lines
6.9 KiB
C
#include "provalctrl.h"
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#include "modbus.h"
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#include "dac7311.h"
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#include "main.h"
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propotion_valve pv_one;
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propotion_valve pv_two;
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//4-20mA电流输出
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float ao_dwq = 0; //AO输出电流值(定位器)
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float ao_blf1 = 0; //AO输出电流值(比例阀)
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float ao_blf2 = 0; //AO输出电流值(比例阀)
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void prov_init(void) //比例阀结构体参数初始化
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{
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pv_one.current_pressure = 0; //当前气压，Kpa
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pv_one.current_percent = 0; //当前气压百分比（ 0~900Kpa -> 0~100% ）
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pv_one.target_pressure = 0; //目标气压，Kpa
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pv_one.target_percent = 0; //目标气压百分比（ 0~900Kpa -> 0~100% ）
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pv_one.current_input = 0; //当前输入电流
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pv_one.input_min = 4; //输入电流下限4mA
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pv_one.input_max = 20; //输入电流上限20mA
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pv_one.bias = 0; //偏差 = 目标气压百分比 - 当前气压百分比
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pv_one.bias_area = 0.5; //允许的误差范围，±a(%)
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// pv_one.Kp = 0; //pid控制
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// pv_one.Ki = 0;
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// pv_one.Ing = 0;
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// pv_one.Ing_max = 10;
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// pv_one.Ing_min = -10;
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// pv_one.Kd = 0;
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// pv_one.pidout = 0;
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pv_one.cstep = 0.002; //逐步接近的电流步长，mA
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pv_one.cstep_max = 0; //逐步接近的电流范围上限
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pv_one.cstep_min = 0; //逐步接近的电流范围下限
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pv_one.cstep_wait = 0;
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pv_one.pvout = ao_blf1_set;
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pv_one.pvout(0);
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/************************************************/
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pv_two.current_pressure = 0;
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pv_two.current_percent = 0;
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pv_two.target_pressure = 0;
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pv_two.target_percent = 0;
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pv_two.current_input = 0;
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pv_two.input_min = 4;
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pv_two.input_max = 20;
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pv_two.bias = 0;
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pv_two.bias_area = 0.5;
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// pv_two.Kp = 0;
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// pv_two.Ki = 0;
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// pv_two.Ing = 0;
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// pv_two.Ing_max = 10;
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// pv_two.Ing_min = -10;
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// pv_two.Kd = 0;
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// pv_two.pidout = 0;
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pv_two.cstep = 0.005;
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pv_two.cstep_max = 0;
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pv_two.cstep_min = 0;
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pv_two.cstep_wait = 0;
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pv_two.pvout = ao_blf2_set;
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pv_two.pvout(0);
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}
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void prov_ctrl(float target_p, propotion_valve *pvx)
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{
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target_p = (target_p < pvx->input_max)?(target_p):(pvx->input_max); //dac输出限幅
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target_p = (target_p > 0)?(target_p):(0);
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pvx->target_percent = (target_p - pvx->input_min) / (pvx->input_max - pvx->input_min)*100;
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pvx->target_pressure = pvx->target_percent/100*900; //Kpa, 比例阀 (4~20mA -> 0~0.9Mpa)
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pvx->current_input = target_p; //记录当前理论模拟输出
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pvx->cstep_max = pvx->current_input + (float)0.8; //输出调节上限
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pvx->cstep_min = pvx->current_input - (float)0.8; //输出调节下限
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pvx->cstep_wait = 0; //等待计数清零
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pvx->pvout(target_p); //dac输出
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}
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//float ao_prov_one = 0;
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//float ao_prov_two = 0;
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//void prov_calibrate_pid(void)
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//{
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// if( (pv_one.bias > pv_one.bias_area)||(pv_one.bias < -pv_one.bias_area) )
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// {
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// pv_one.Ing = pv_one.Ing + pv_one.bias;
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// if(pv_one.Ing > pv_one.Ing_max) pv_one.Ing = pv_one.Ing_max;
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// if(pv_one.Ing < pv_one.Ing_min) pv_one.Ing = pv_one.Ing_min;
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//
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// pv_one.pidout = (pv_one.Kp/10000)* pv_one.bias + (pv_one.Ki/100000)*pv_one.Ing;
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// if(pv_one.pidout > (float)0.3) pv_one.pidout = (float)0.3; //pid out limit
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// if(pv_one.pidout < (float)(-0.3)) pv_one.pidout = (float)(-0.3);
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//
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// ao_prov_one = ao_prov_one + pv_one.pidout*(pv_one.input_max - pv_one.input_min);
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//
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// if(ao_prov_one > pv_one.input_max) ao_prov_one = pv_one.input_max; //dac limit
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// if(ao_prov_one < pv_one.input_min) ao_prov_one = pv_one.input_min; //dac limit
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// ao_blf1_set(ao_prov_one);
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// }else
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// {
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// pv_one.Ing = 0;
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// }
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//
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// if( (pv_two.bias > pv_two.bias_area)||(pv_two.bias < -pv_two.bias_area) )
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// {
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// ao_prov_two = ao_prov_two + pv_two.pidout;
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// }else
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// {
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// pv_two.Ing = 0;
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// }
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//}
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float atm_pressure = 0; //用于存放大气绝压，单位：0.1Kpa
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void analog_ctrl(void)
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{
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if(ao_dwq != (float)(HoldReg[0]) / 1000) //保持寄存器值发生变化时dac输出
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{
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ao_dwq = (float)(HoldReg[0]) / 1000; // uA -> mA
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if(ao_dwq > 25) ao_dwq = 25; //定位器控制
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ao_dwq_set(ao_dwq);
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}
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if(ao_blf1 != (float)(HoldReg[1]) / 1000) //保持寄存器值发生变化时dac输出
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{
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ao_blf1 = (float)(HoldReg[1]) / 1000; // uA -> mA
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prov_ctrl(ao_blf1,&pv_one); //控制比例阀1
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}
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if(ao_blf2 != (float)(HoldReg[2]) / 1000) //保持寄存器值发生变化时dac输出
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{
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ao_blf2 = (float)(HoldReg[2]) / 1000; // uA -> mA
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prov_ctrl(ao_blf2,&pv_two); //控制比例阀2
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}
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// if(it_100ms_flag_pv == 1) //每隔100ms对输出进行一次校准
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// {
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// it_100ms_flag_pv = 0;
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//
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// if( (CoilState[0]&(0x03)) == 0x03 ) //两个电磁阀都开启的情况下才进行校准
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// {
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// prov_calibrate_step(&pv_one);
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// prov_calibrate_step(&pv_two);
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// }
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// }
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if(it_50ms_flag_pv == 1) //每隔50ms更新一次数据
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{
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it_50ms_flag_pv = 0;
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atm_pressure = 1012; //大气绝压更新
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//比例阀1数据更新：当前气压、当前气压百分比、百分比偏差、当前输入电流（单片机->比例阀）
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pv_one.current_pressure = (InputReg[16] - atm_pressure)/(float)10; //Kpa，sensor1 A口绝压转表压
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pv_one.current_percent = pv_one.current_pressure/900*100;
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pv_one.bias = pv_one.target_percent - pv_one.current_percent;
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//比例阀2数据更新：当前气压、当前气压百分比、百分比偏差、当前输入电流（单片机->比例阀）
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pv_two.current_pressure = (InputReg[17] - atm_pressure)/(float)10; //Kpa，sensor1 B口绝压转表压
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pv_two.current_percent = pv_two.current_pressure/900*100;
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pv_two.bias = pv_two.target_percent - pv_two.current_percent;
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if( (CoilState[0]&(0x03)) == 0x03 ) //两个电磁阀都开启的情况下才进行校准
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{
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prov_calibrate_step(&pv_one);
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prov_calibrate_step(&pv_two);
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}
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}
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}
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void prov_calibrate_step(propotion_valve *pvx)
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{
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pvx->cstep_wait = (pvx->cstep_wait > 254)?(pvx->cstep_wait):(pvx->cstep_wait + 1); //每100ms加一次，上限255
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if( (pvx->bias > pvx->bias_area) && (pvx->bias < BIAS_MAX) && ( pvx->cstep_wait > CSTEP_WAIT_MAX) ) //目标更新X秒后，误差仍不符合条件时再进行微步调节
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{
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pvx->current_input += pvx->cstep;
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pvx->current_input = (pvx->current_input <= pvx->cstep_max)?(pvx->current_input):(pvx->cstep_max); //dac输出限幅
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pvx->current_input = (pvx->current_input <= pvx->input_max)?(pvx->current_input):(pvx->input_max);
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pvx->pvout(pvx->current_input);
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}
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if( (pvx->bias < -pvx->bias_area) && (pvx->bias > -BIAS_MAX) && ( pvx->cstep_wait > CSTEP_WAIT_MAX) ) //目标更新X秒后，误差仍不符合条件时再进行微步调节
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{
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pvx->current_input -= pvx->cstep;
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pvx->current_input = (pvx->current_input >= pvx->cstep_min)?(pvx->current_input):(pvx->cstep_min); //dac输出限幅
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pvx->current_input = (pvx->current_input >= pvx->input_min)?(pvx->current_input):(pvx->input_min);
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pvx->pvout(pvx->current_input);
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}
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}
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