Bandwidth-adjustable large dynamic range digital temperature control method and system

The invention discloses a bandwidth-adjustable large dynamic range digital temperature control method and system, and the method comprises the steps: setting a temperature control point of a temperature servo system, and calculating a digital-to-analog conversion module voltage control word corresponding to the temperature control point according to the set temperature control point; establishing a temperature control model, and calculating the heating gain of the temperature servo system; calculating a proportional-integral coefficient of the temperature servo system according to the set loop bandwidth of the temperature servo system; and calculating a heating control quantity according to the proportional-integral coefficient, and performing heating control on the controlled physical system. The dynamic range of settable temperature control points is large, and the bandwidth of a temperature control loop is quantitative and adjustable. Meanwhile, the heating gain of the heating execution module is quantitat