过程控制系统实验报告汇总

四、思考题

1、流量对象与液位对象有什么区别？流量控制系统的参数整定要注意 哪些问题？ 答：（1）

①流量对象应用流量传感器，对于设定的流量值，系统会在达到 该流 量时以大致稳定的流速往水箱注水；

②液位对象以设定的液位高度为基准，传感器一直对高度进行测量， 达到设定高度后立即停止注水，并一直检测，当液面未达到设定值，

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再次注水以此反复。

（2）注意数学模型的正确建立，在建模过程中减少盲目性，但是该 方法较为复杂，在过程控制进行中直接进行工程正定，该方法简单， 计算方便，但是参数不一定最佳，但实用；在此采用现场实验整定的 方法，这种方法注意改变比例积分的参数，并有比较性地改变，有比 较好得效果。

附实验程序：

实验二 传感器、执行器实验#include #include #include #include \ #include \

void main()

{ PT_AIConfig ptAIConfig; PT_AIVoltageIn ptAIVoltageIn; float advalue; float h; float q=0;

FILE *fp=fopen(\ long DriverHandle; ULONG num1=0,num2=0; int count;

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USHORT over=0;

PT_CounterEventStart ptCounterEventStart; PT_CounterEventRead ptCounterEventRead;

DRV_DeviceOpen(0,&DriverHandle); while(!kbhit())

{ptAIConfig.DasChan=0;//AI 通道 0

ptAIConfig.DasGain=0;//Gain Code，+/-5V

DRV_AIConfig(DriverHandle, (LPT_AIConfig)&ptAIConfig);

//读取指定 AI 通道的电压值

ptAIVoltageIn.chan = 0;//通道 0

ptAIVoltageIn.gain = 0;//Gain Code，+/-5V ptAIVoltageIn.TrigMode = 0; //内部触发

ptAIVoltageIn.voltage = (FLOAT far *)&advalue;//返回电压值 DRV_AIVoltageIn(DriverHandle,(LPT_AIVoltageIn)&ptAIVoltageIn);

printf(\ value=%f!\\n\

ptCounterEventStart.counter=0;

DRV_CounterEventStart(DriverHandle,&ptCounterEventStart);

ptCounterEventRead.counter=0;

ptCounterEventRead.overflow=&over; ptCounterEventRead.count=&num1; DRV_CounterEventRead

(LPT_CounterEventRead)&ptCounterEventRead);

DRV_CounterEventRead (DriverHandle, &ptCounterEventRead); printf(\ Sleep(1000);

ptCounterEventRead.counter=0;

ptCounterEventRead.overflow=&over; ptCounterEventRead.count=&num2; DRV_CounterEventRead

(LPT_CounterEventRead)&ptCounterEventRead);

(DriverHandle,

(DriverHandle,

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DRV_CounterEventRead (DriverHandle, &ptCounterEventRead); printf(\

count=num2-num1; q=0.0122*count+0.3412; h=advalue*80;

printf(\ fprintf(fp,\ fprintf(fp,\ }

fclose(fp);

DRV_CounterReset(DriverHandle,0); DRV_DeviceClose( &DriverHandle ); }

实验三 系统动态特性的测试

#include #include #include #include \ #include \

void main() {

long DriverHandle_v;

PT_AIConfig ptAIConfig;

PT_AIVoltageIn ptAIVoltageIn; float advalue;

DRV_DeviceOpen(0,&DriverHandle_v); //打开设备

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//AI 配置

ptAIConfig.DasChan=0;//AI 通道 0

ptAIConfig.DasGain=0;//Gain Code，+/-5V

DRV_AIConfig(DriverHandle_v, (LPT_AIConfig)&ptAIConfig);

//读取指定 AI 通道的电压值

ptAIVoltageIn.chan = 0;//通道 0

ptAIVoltageIn.gain = 0;//Gain Code，+/-5V ptAIVoltageIn.TrigMode = 0; //内部触发

ptAIVoltageIn.voltage = (FLOAT far *)&advalue;//返回电压值

DRV_AIVoltageIn(DriverHandle_v,(LPT_AIVoltageIn)&ptAIVoltageIn);

long DriverHandle;

ULONG num1=0,num2=0; int count; USHORT over=0;

PT_CounterEventStart ptCounterEventStart; PT_CounterEventRead ptCounterEventRead;

DRV_DeviceOpen(0,&DriverHandle);

ptCounterEventStart.counter=0;

DRV_CounterEventStart(DriverHandle,&ptCounterEventStart);

ptCounterEventRead.counter=0;

ptCounterEventRead.overflow=&over; ptCounterEventRead.count=&num1; DRV_CounterEventRead (DriverHandle, (LPT_CounterEventRead)&ptCounterEventRead);

DRV_CounterEventRead (DriverHandle, &ptCounterEventRead); printf(\ Sleep(1000);

ptCounterEventRead.counter=0; ptCounterEventRead.overflow=&over; ptCounterEventRead.count=&num2;

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