Parameter tuning is the core: the control effect of the three loops depends on PID parameter optimization (such as excessive proportional gain in the position loop leading to overshoot, and insufficient integral gain in the speed loop leading to speed fluctuations), which needs to be gradually adjusted according to the load characteristics and motion speed of the electric cylinder;

Feedback components are the foundation: the accuracy of the encoder directly determines the accuracy of position/velocity feedback (such as 17 bit encoder positioning more accurately than 14 bit encoder). If the feedback signal is abnormal, it will cause the failure of the three loop control (such as positioning drift, motion jitter);

Loop priority: The response speed of the inner loop must be much faster than that of the outer loop (usually the current loop response speed is 5-10 times that of the speed loop, and the speed loop is 5-10 times that of the position loop), otherwise there will be a situation where the "inner loop cannot keep up with the outer command", resulting in control oscillations.

In short, the three loop control of servo electric cylinders is essentially achieved through a layered closed-loop system of "current (torque) - speed - position", breaking down the macro demand for "precise positioning" into micro execution of "fast torque response" and "smooth speed adjustment", ultimately achieving high-precision and high stability motion control. This is also its core technological advantage that distinguishes it from ordinary electric push rods.