基于80C552的双闭环变速智能电动执行器设计

电动执行机构是自动控制系统中不可缺少的重要组成部分。它以电源为动力，接收控制器或人给定的控制信号（包括模拟量、数字量），将此信号转变成对应的机械位移（转角、直线或多转）连续或断续地去推动各种控制机构。目前国内使用执行器的大多是DDZ和DKZ型，阀门只有一种调节速度，当阀门以高速操作时．关闭的瞬间给密封面一个很大的冲击力．这个冲击力会破坏密封面，影响阀门的再次操作甚至损坏阀门。所以希望电动执行机构具有改变操作速度的能力。使高速操作的阀门接近全关时有可能改为低速运行，实现柔性关断．

Design to the Double Closed Loop Variable-Velocity Intelligent Electric Actuator Based on 80C552

The paper designs a kind of intelligent electric actuator based on 80C552 single-chip processor, it applies the control method of the position and velocity double closed loop to establish the position loop model with given velocity and velocity of loop model with the fuzzy parameter self-tuning PID based on the increment of position serving as the independent variable. The test shows that the actuator could carry out the quick and accurate orientation and the flexible shut as it could regulates the velocity.