arduinoPID库文件
3个文件下载(仅供参考,有错误请指出)：
PID_v1.rar
(6.84 KB, 下载次数: 146)
- /********************************************************
- * PID RelayOutput Example
- * Same as basic example, except that this time, the output
- * is going to a digital pin which (we presume) is controlling
- * a relay. the pid is designed to Output an analog value,
- * but the relay can only be On/Off.
- *
- * to connect them together we use "time proportioning
- * control" it's essentially a really slow version of PWM.
- * first we decide on a window size (5000mS say.) we then
- * set the pid to adjust its output between 0 and that window
- * size. lastly, we add some logic that translates the PID
- * output into "Relay On Time" with the remainder of the
- * window being "Relay Off Time"
-
- PID继电器输出范例
- 与基本范例相同，这一次输出是一个数字引脚控制的继电器。PID被设计成
- 输出一个模拟值，但是继电器只有开关状态。
- 为了联系上两者，我们使用时间比例控制，它本质上是一个很慢的PWM。
- 首先我们决定一个窗口时间（比如5000ms）。
- 然后设置PID适应它的输出在0到窗口时间的范围。
- 最后我们添加一些逻辑，把PID输出转换成“继电器接通时间”和剩余的
- “继电器断开时间”
- ********************************************************/
- #include <PID_v1.h>
- #define RelayPin 8
- // 定义我们将要使用的变量
- //Define Variables we'll be connecting to
- double Setpoint, Input, Output;
- //指定链接和最初的调优参数
- //Specify the links and initial tuning parameters
- PID myPID(&Input, &Output, &Setpoint,2,5,1, DIRECT);
- int WindowSize = 2000;
- unsigned long windowStartTime;
- void setup()
- {
- windowStartTime = millis();
- //初始化变量
- //initialize the variables we're linked to
- Setpoint = 100;
- //告诉PID在从0到窗口大小的范围内取值
- //tell the PID to range between 0 and the full window size
- myPID.SetOutputLimits(0, WindowSize);
- //开启PID
- //turn the PID on
- myPID.SetMode(AUTOMATIC);
- }
- void loop()
- {
- Input = analogRead(0);
- myPID.Compute();
- /************************************************
- * turn the output pin on/off based on pid output 基于PID输出，打开或关闭端口输出
- ************************************************/
- if(millis() - windowStartTime>WindowSize)
- { //time to shift the Relay Window 继电器窗口时间
- windowStartTime += WindowSize;
- }
- if(Output < millis() - windowStartTime) digitalWrite(RelayPin,HIGH);
- else digitalWrite(RelayPin,LOW);
- }
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