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1、电烤箱闭环控制实验一、实验目的1.了解PID控制器控制电烤箱的方法；2.掌握数字PID算法及实现方法。二、原理电烤箱闭环控制实验原理图如图7-23所示。控制器、D/A、A/D由TDN-AC/ACS系统的相应单元完成。驱动电路单元电路测温电路烤箱图8-15电烤箱闭环控制实验原理图接线图+12VAADTDN-ACS系统阁7-23电烤箱闭环控制实验接线阁电烤箱闭环控制实验接线图如图8-16所示，具体工作说明如下：1.控制S:TDN-ACS系统的8255PB10口输出的PWM脉冲信兮为控制虽，经驱动电路驱动烤箱上加热用固态继电器的吸合。2.测温系统：温度测量使用了10K的热敏电
2、肌，经A/D转换后构成反馈量。3.控制器：由8088CPU组成。在8088CPU屮控制偏差经PW运算产生相应控制量，使烤箱稳定在给定值。4.8253的2号通道输出10ms方波的作用：①定时启动A/D转换器；+5V1CLOCK-•INOEOCDOD7■GATE2IRQ6OUT2■OPCLK-CLK2IRQ7PAOPA7PB1O1+电烤箱2-固态继电器电烤箱热敏电阻10K500Q②介入8259产生IKQ6中断，作为系统采样时钟。四、实验内界1.按图8-14接线；2.将程序装入并调试；3.调整PID参数找出介适的参数丼纪录在表8-6。表8-6实验数据记级表IBANDKPPKI
3、IKDDMpTs1.例程中参数响应特征0060H1060H0010H0020H10%lOmin2.去掉IBAND0000H1060H0010H0020H3.自测一组较好参数五、程序淸单STACKSEGMENTSTACKDW256DUP(?)TOPSTACKLABELWORDENDSDATASEGMENTTSDB64HSPECDW0064HIBANDDW0060HKPPDW1F60HKTTDW001OHKDDDW0020HCHIDB?CH2DB?YKDW?CKDB?TCDB?TKMARKDB?ADMARKDB?ADVALUEDB?FPWMDB?CK_1DB?EK_1DW?
4、AEK1DW?BEKDW?AAADB?VAADB?BBBDB?VBBDB?R0DW?R1DW?R2DW?R3DW?R4DW?R5DW?R6DW?R7DB?R8DW?TABLEDB14H,14H,14H,14H,14H,14H,14H,14H,14H,14H,15H,16H,17H,18HDB19H,1AHDB1BH,1CH,1DH,1EH,1EH,1FH,20H,21H,23H,24H,25H,26H,27H,28H,29H,2AHDB2BH,2CH,2DH,2EH,2FH,31H,32H,32H,33H,34H,35H,36H,37H,38H,39H,3AHDB3BH
5、,3CH,3DH,3EH,3FH,40H,42H,43H,44H,45H,46H,47H,48H,49H,4AH,4BHDB4CH,4DII,4EH,4FH,5011,4FH,5011,5111,5211,5311,54H,5511,5611,5711,5811,5911DB5AH,5BH,5CH,SDH,5EH,5FH,60H,61H,62H,63H,64H,64H,65H,65H,66H,66HDB67H,68H,69H,6AH,6BH,6CH,6DH,6EH,6EH,6FH,6FH,70H,71H,72H,73H,74HDB75H,76H,77H,78H,79H,
6、7AH,7BH,7CH,7DH,7EH,7FH,80H,81H,82H,83H,84HDB84H,85H,86H,87H,88H,89H,8AH,8BH,8CH,8EH,8FH,90H,91H,92H,93H,94HDB9511,9611,9711,9811,9911,9AH,9BH,9BH,9CH,9CH,9DH,9DH,9EH,9EH,9FH,9FHDB0A0H,0A1H,0A2H,0A3H,0A4H,0A5H,0A6H,0A7H,0A8H,0A9H,OAAH,OABH,OACHDBOADH,OAEH,OAEHDBOBOH,OBOH,0B1H,0B2H,0B3H,0
7、B4H,0B4H,0B5H,0B6H,0B7H,0B8H,0B9H,OBAHDBOBBH,OBDH,OBEHDBOBEH,0C1H,0C2H,0C3H,0C4H,0C5H,0C6H,0C8H,OCAH,OCCH,OCEH,OCFH,ODOHDB0D1H,0D2H,0D4HDB0D5H,0D6H,0D7H,0D8H,0D9H,ODAH,ODBH,ODCH,ODDH,ODEH,0E3H,0E6H,0E9HDBOECH,OFOH,0F2HDB0F6H,OFAH,OFFH,OFFH,OFFH,OFFH,OFFH,OFFH,OFFH,OFFH,OF
