DZ202PLC溫度控制系統(tǒng)

DZ202PLC溫度控制系統(tǒng),DZ202PLC,溫度,控制系統(tǒng) 摘 要 主要介紹了一種基于的DSP水溫自動控制系統(tǒng)的設(shè)計(jì)原理，描述了系統(tǒng)組成的各個模塊和硬件和軟件的實(shí)現(xiàn)。該系統(tǒng)通過對水溫的采樣，與預(yù)置值的比較，來控制水溫。 本系統(tǒng)采用十六位DSP（數(shù)字信號處理器）TMS320F240為主控制器，它具有運(yùn)算速度快，信號實(shí)時處理的優(yōu)點(diǎn)。另外，它片內(nèi)擴(kuò)展外設(shè)，簡化了硬件電路圖的設(shè)計(jì)，由于它面向數(shù)字控制系統(tǒng)，使得能夠運(yùn)行復(fù)雜控制算法。 在溫度采集方面，采用DS1820作為傳感器實(shí)施數(shù)據(jù)采集。采用溫度傳感器DS1820具有較高精度和重復(fù)性（重復(fù)性優(yōu)于0.1oC）良好的線性可以保證±0.1oC的測量精度，利用重復(fù)性較好的特點(diǎn)，通過非線性補(bǔ)償，可以達(dá)到±0.4oC測量精度和±0.4oC保溫精度。 控制算法采用PID算法，可以使系統(tǒng)具有較好的快速性和較小的超調(diào)。 由于本系統(tǒng)對DSP、DS1820以及PID算法的應(yīng)用，較好的滿足了設(shè)計(jì)要求，實(shí)現(xiàn)了所要求的各項(xiàng)功能。 關(guān)鍵詞：溫度控制 TMS320F240 PID算法 Design of Water Temperature Auto Control System Based on DSP Abstract In the aspects of this text introduced the design principle of the automatic control in water temperature in canteen in electricity system primarily. Describes the hardware and software modules were provided. That system passes to adopt the data from the electricity canteen water temperature, and compares with the refer input to control the water temperature. This system adopts 16 bits DSP (Digital signal processor) TMS320F240 as the main device .It has the advantages of calculating speed quickly and processing signal in real time. And it has a lot of outside devices in it. This simplifies the design of the hardware circuit. Because it face to the arithmetic figure control system, it can circulate the complex control system. DS1820 is used as the conductor of this system. It has higher accuracy and good linearity characteristic in repetition( repetition better than 0.1℃) in ± 0.1 ℃ of diagraph accuracy. It can attain the ± 0.4 ℃ measure accuracy . The control arithmetic adopts the PID. It can make system had better of faster and smaller super adjust. Because this system adopts DSP, DS1820 and the arithmetic of PID, it contents the design requests better. Key Words: Temperature Control TMS320F240 PID Algorithm