中文摘要：

介绍了多级积分分离PID算法的原理，并对传统PID算法、单级积分分离P1D算法和多级积分分离PID算法的进行了仿真分析，研究发现多级积分分离PID控制算法在减少超调量、提高系统稳定性等方面更具优势。以多级积分分离PID算法为算法基础设计了高精度多路温度控制系统，并对该系统的性能进行了测评。实验结果表明，测温精度为±0．028K、温度控制精度为±0．087K、最大超调量小于2％。所以采用多级积分分离PID算法的温度控制系统能够满足各种工控条件下的温度控制需要。

英文摘要：

The multistage separation PID algorithm used in the temperature control system is introduced in the present work. The simulation is carried out on the traditional PID algorithm, single integral separation PID algorithm and the multistage separation integral PID algorithm. The study shows that the multistage separation integral PID algorithm has obvious advantages in reducing the overshoot and improving the system stability. In this research, a high-precision multi-channel temperature control system is developed based on the multistage integral separation PID algorithm and the performance evaluation for this system is conducted. The results show that the accuracy of the temperature measurement system and the temperature control system could be within 0.028 K and 0.087 K, respectively, and its maximum overshoot is less than 2 %. Therefore, the temperature control system established with the multistage integral separation PID algorithm could meet different requirements of temperature control.