在五十和六十年代,自动化工作者常用物理仿真和模拟计算机仿真的技术手段来研究和设计自动调节系统。随着数字计算机和数字计算技术的飞速发展,一项新技术——数字仿真出现了。由于它在准确性、快速性、灵活性等方面的突出优点,数字仿真已愈来愈多地用于研究和设计自动调节系统。 In the fifties and sixties, automation workers used the physical means of simulation and computer simulation techniques to study and design automatic adjustment system. With the rapid development of digital computers and digital computing technologies, a new technology, digital simulation, has emerged. Due to its outstanding advantages in terms of accuracy, speed, flexibility and the like, digital simulations have increasingly been used to research and design automatic adjustment systems.