如何用C语言实现Bladed中的外部控制器

1、如何用C语言实现Bladed中的外部控制器来源:本站原创作者:DLL下载家园更新时间:2010-9-9Bladed2010-09-0822:57:18阅读0评论0字号：大中小订阅1、Bladed软件及外部控制器在Bladed风机载荷模拟软件中，可以让用户用C语言编写自己的DLL程序作为载荷计算的风机控制器。DLL控制器通讯速度快，将风机控制系统的关键特性通过转换成C语言的控制器可以更真实的模拟风机的运行并获得用户风机的更逼真的载荷数据。下面是一个用VISUALSTUDIO2005的C+实现的用户控制器的实例。2、C+代码如何创建DLL可以参考VC+.NET实现DLL并在其中调用下面是语言源代码

2、：Head文件/caiLib.h#ifndefCAILIB_H#defineCAILIB_H/extern"C"int_declspec(dllexport)add(intx,inty);extern"C"/avoidmanglednamesvoid_declspec(dllexport)_cdeclDISCON(float*avrSwap,int*aviFail,char*accInfile,char*avcOutname,char*avcMsg);voidsetParams(float*sAvrSwap);intapp(intx,inty);#end

3、if头文件说明:在其中定义程序名称。程序代码/caiLib.cpp:定义DLL应用程序的入口点。/#include"stda仅.h”#include"caiLib.h"#include"stdio.h"#defineNINT(a)(a)>=0.0?(int)(a)+0.5):(int)(a)-0.5)/在此定义浮点数转换成整数#ifdef_MANAGED#pragmamanaged(push,off)#endiffloat*SwapArray,Kp,Ki;定义与Bladed交换数组的地址指针，定义PI控制器比例/及积分系数staticfl

4、oatsumError;定义积分累积误差变量floatGetSwapValue(intIndex)return(SwapArrayIndex-1);/定义t取Bladed传递变量值函数voidSetSwapValue(intIndex,floatVal)SwapArrayIndex-1=Val;/定义设置彳递到Bladed的变量void_declspec(dllexport)_cdeclDISCON(float*avrSwap,int*aviFail,char*accInfile,char*avcOutname,char*avcMsg)主函数DISCON实现charMessage257,InF

5、ile257,OutName1025;floatrTime,rMeasuredSpeed,rMeasuredPitch,rGeneratorSpeed;intiStatus,iFirstLog;staticintiStep,iDone,iControlState;staticfloatrPitchDemand,RPMSetpoint,TimeDiff,OldTime,Temp;FILE*fp;SwapArray=avrSwap;/Storethepointer/Makesurethere'saCstringterminatoraccInfileNINT(avrSwap49)+1=

6、9;0'avcOutnameNINT(avrSwap50)='0'avcMsg0='0'iStatus=NINT(avrSwap0);/Initialiseif(iStatus=0)/ReadtheDISCON.INdatafp=fopen("DISCON.IN","r");fscanf(fp,"%fn%fn",&Kp,&Ki);fclose(fp);printf("Kp=%0.5f,Ki=%0.5fn",Kp,Ki);/Initialisepitchdema

7、ndtocurrentpitchanglerMeasuredPitch=GetSwapValue(4);rPitchDemand=rMeasuredPitch;sumError=0.0F;iStep=0;/Startupstep=0TimeDiff=0.0F;OldTime=GetSwapValue(2);/Thisisalsowhereyoucouldreadinanyuser-defineddatafromaccInFile/Returndemandedvariables/Note:previousvaluescanbeusedbeforetheyupdated,tosimulateaon

8、e-sampledelayif(NINT(GetSwapValue(10)=0)SetSwapValue(42,rPitchDemand);SetSwapValue(43,rPitchDemand);SetSwapValue(44,rPitchDemand);SetSwapValue(45,rPitchDemand);elsestrcpy(avcMsg,"ThissimpleDLLneedspitchpositionactuator");*aviFail=-1;rMeasuredPitch=GetSwapValue(4);rGeneratorSpeed=GetSwapVal

9、ue(20)/(2.0F*3.14F)*60.0F;/变换rad/s为rpmTimeDiff=GetSwapValue(2)-OldTime;iControlState=NINT(GetSwapValue(117);/获彳导Bladed的控制状态/iControlState=0;production/=1:Parked/=2:idling/=3:Startup/=4:NormalStop/=5:EmergencyStop/Maincalculationif(*aviFail>=0)/Justa1-degreestepchangeinpitchpositiondemandat10secon

10、dsif(GetSwapValue(2)>=0.1&&iStep=0)iStep=1;if(iStep=1)rPitchDemand=40*0.017453F;if(rGeneratorSpeed>220.0)RPMSetpoint=rGeneratorSpeed;/setpoint=GeneratorSpeediStep=iStep+1;if(iStep=2)Temp=PIController(rGeneratorSpeed,RPMSetpoint);<>rPitchDemand=rPitchDemand+Temp;if(TimeDiff>=1)

11、if(RPMSetpoint>=1290.0)RPMSetpoint=1296.0F;iStep=iStep+1;iDone=1;elseRPMSetpoint=RPMSetpoint+8.0F;OldTime=GetSwapValue(2);按8rpm/s增加发电机转速给定if(iStep=3)Temp=PIController(rGeneratorSpeed,RPMSetpoint);rPitchDemand=rPitchDemand+Temp;if(rPitchDemand>3.1415926/2)rPitchDemand=3.1415926F/2.0F;if(rPitchDemand<0)rPitchDemand=0.0F;/Loggingoutputstrcpy(avcOutname,"GeneratorDemandSpeed:A/T;");SetSwapValue(65,1.0F);)return;)#ifdef_MANAGED#pragmamanaged(pop)#endif将程序编译后得到程序caiLib.DLL.将此程序在Bladed中的控制部