How to ensure the operating speed of the hydraulic actuator is not changed by the load.
You don't need the speed control valve for the variable pump! I don't know if your system is complex and complicated, and it's best to attach a picture. If you need to install the speed control valve, note that the import and export is wrong.
Since you are using a variable pump, use a load sensitive system!! In a variable system, the speed of the execution component is determined by the output flow of the variable pump, which has no relation to the load size. Load senstive signal feedback: Pump P - P = Δ load P Flow Q = C * A * Δ P, is A main valve core and for variable pump system load sensitive Δ P is constant, The speed of the execution component is only related to the main valve opening. For your hydraulic motor, the speed of the motor has no relation to the load size, only proportional to your main valve opening (or handle).
The constant speed of the hydraulic motor is controlled by the constant speed. Speed control valves can be used to achieve constant speed
