Oil recharging system and oil recharging method based on proportional control

The invention relates to the technical field of fluid pressure executing mechanisms, in particular to an oil supplementing system and method based on proportional control, the oil supplementing system comprises a hydraulic system, a controller and an operating handle, one end of the controller is connected to the operating handle, and the other end of the controller is connected to the hydraulic system; the control module is used for controlling the oil supplementing amount of the hydraulic system based on the moving angle of the operation handle. Zero-pressure oil return of the multi-way valve and pressure oil return in any proportion with the angle of the handle can be achieved through the controller by controlling different angles of the operating handle, so that oil return of the multi-way valve is controllable, when a certain hydraulic system does not need to be refilled with oil, zero-pressure oil return is achieved through the controller, and when some hydraulic systems need to be refilled with oil, oi