智能烘箱温度控制器设计-英文翻译

PID control algorithm

Developed using PID control principle is suitable for the temperature controller is used for low power devices, the controller can achieve good control effect, if carefully chosen the various parameters of the PID temperature control precision can reach 0.05 ℃, can guarantee the normal work of the device. In some control system, first of all measured parameters (temperature) that will need to control by the sensor is converted into a signal and then compared with preset value, the difference compare with the signal after a certain regularity of calculation to get the corresponding control values, send control quantity to control system to carry on the corresponding control, constantly in the work, so as to achieve the goal of automatic adjustment. PID is currently widely used control method, the mathematical model of the control law is: Vo kp e 1de edtTd Vo 1 Tidt

Among them: for proportional coefficient KP; E for the differential signal, e = T - Tset (T: temperature measurement value, the Tset: temperature set point); Ti is constant of integration; Td for differential constant; Where V0, where V0-1 for a moment before then and the amount of control.

Proportional control (P) is one of the most simple control method. The controller output to the input error signal is proportional to the relationship. When only proportional control system output steady-state error.

Integral control (I) in integral control, the controller output is proportional to