position control loop

Half closed loop control strategy system was insured, and the precision of the system was improved with the current loop, speed loop and position loop, and the design accuracy was met.

确定系统采用半闭环控制策略，用电流环、速度环、位置环来提高系统精度，满足设计精度。

For the tumbling loop, the servo actuator adopts three-position relay control fashion to make the loop be stable by using the relay control circuit, the three-position and five-passage valve and the gas amplification device.

对于滚转稳定回路，采用三位置继电控制舵，通过继电放大器、三位五通阀和气动放大器来控制舵面的偏转，以此来实现滚转稳定。

The paper establishes a double-loop control model suitable for three-phase electric regulating valve with large capacity, presents the mathematical model of the velocity generator, which takes increment of valve position as input, and the velocity control strategy for fuzzy parameter self-aligning PID.

本文构建了适用于大流量三相电动调节阀的双闭环控制模型，提出了以阀位增量为输入量的速度发生器的数学模型和模糊参数自整定PID的速度控制策略。

By adopting the control scheme that is motion controller with position closed loop function+ speed pattern actuator, we reached a higher control precision.

通过采用具有位置闭环功能的运动控制器+速度模式驱动器的控制方案，达到了较高的控制精度。

The mathematical model of hydraulic actuator for Auto-clutch was established. A two-loop controller with clutch position fuzzy PID control and duty cycle PID control was designed. Then a simulation model was build in order to test the dynamic response of hydraulic actuator being designed.

建立离合器液压执行机构的数学模型，设计了离合器接合位置模糊PID、占空比PID控制双闭环控制器，并搭建仿真模型检验离合器执行机构对控制目标的跟踪响应情况。