Single-motor, dual-hydraulic-circuit drive system for industrial materials-handling vehicle and method for controlling the same

A method for controlling an industrial handling vehicle provided with a drive system comprising an electric motor, a first pump, and a second pump, wherein the first pump is configured to provide hydraulic power for a travelling device of the industrial handling vehicle, wherein the first pump and the travelling device are in a first hydraulic circuit, wherein the second pump is configured to provide hydraulic power for a brake device and/or a steering device and/or a handling device of the industrial handling vehicle, wherein the second pump, the brake device, the steering device and the handling device are in a second hydraulic circuit isolated from the first hydraulic circuit, and wherein the electric motor is operatively coupled to both of the first pump and the second pump to drive them to operate, the method comprising:

• operating an electric motor of the drive system at least at a first specified rotating speed value when the industrial handling vehicle is in a non-travelling state and before a handling device of the industrial handling vehicle is operated, wherein the first specified rotating speed value is a minimum rotating speed value of a rotational shaft of the electric motor required for carrying out a braking function of a brake device of the industrial handling vehicle.