What control methods does the servo driver board support?

The servo drive board typically support three main control methods, each with different application characteristics:

The speed is controlled by the frequency of external input pulses, and the rotation angle is controlled by the number of pulses. Speed and displacement can also be allocated directly through communication. This model has strict limits on position and speed and is suitable for situations that require high precision positioning, such as CNC machines and robot joints. The key advantage is the closed-loop control by encoder feedback to ensure that the actuating mechanism reaches the target position accurately.

motor output torque can be set by external analog input or address assignment. torque size can be adjusted in real time or parameters can be modified by means of communication. This model focuses on torque stability and is suitable for situations where load forces require to be precisely controlled, such as winding equipment and fibre-optic pulling equipment. Its characteristics are direct control current loop, dynamic response speed is fast, but needs to adjust the torque setting according to load change dynamically.

Speed can be controlled by analog input or pulse frequency. positioning function can be realized under the outer loop PID control of the upper controller, but feedback motor or load position signal is needed. This mode supports direct detection of external load loop, reduces transmission errors and improves positioning accuracy. Suitable for conveyor belt, centrifuge, etc., which require constant speed or dynamic speed adjustment.

Just constant torque: Prefer torque mode to simplify control logic.
Position/velocity accuracy required: Select location or velocity mode. The former is large in computation but accurate in positioning, while the latter is suitable for closed-loop optimization of upper controller.
Dynamic performance is demanding: if the upper controller has strong computing capabilities, the position loop can be moved to the controller for efficiency; for higher-end systems, the velocity loop can even be moved away from the driver for a more flexible control structure.