An actuator arrangement for a trolley-assisted mining vehicle, the actuator arrangement comprising at least one trolley pole, wherein a trolley pole comprises a proximal end and a distal end, wherein the trolley pole is arranged from the proximal end to a support arrangement, and the distal end of the trolley pole comprises a slide configured to feed in electrical energy from a trolley line to and/or from the trolley-assisted mining vehicle; at least one actuator (1,1A,1B) configured to raise and lower the trolley pole and to press the slide against the trolley line to form a contact force (F 1, F 2, F 3) between the slide and the trolley line; and a controller coupled to the at least one actuator (1,1A,1B) and configured to control the contact force (F 1, F 2, F 3) of the at least one slide based on pressure or power information received from the at least one actuator (1,1A,1B); wherein the contact force (F 1, F 2, F 3) is configured to be maintained inside a target range by increasing or decreasing pressure or power of the at least one actuator (1,1A,1B); characterized in that the controller is further coupled to at least one inclinometer of the mining vehicle configured to determine a ramp angle (ε) in relation to flat terrain; and the controller is configured to control the contact force (F 1,F 2,F 3) based on pressure or power information received from the at least one actuator (1,1A,1B) and according to the ramp angle (ε) to keep the contact force inside the target range, such that if the ramp angle (ε) is more than 0° the pressure or power of the at least one actuator (1,1A,1B) is configured to be increased to increase the contact force (F 1, F 2, F 3); and if the ramp angle (ε) is less than 0° the pressure or power of the at least one actuator (1,1A,1B) is configured to be decreased to decrease the contact force (F 1, F 2, F 3). at least one trolley pole, wherein a trolley pole comprises a proximal end and a distal end, wherein the trolley pole is arranged from the proximal end to a support arrangement, and the distal end of the trolley pole comprises a slide configured to feed in electrical energy from a trolley line to and/or from the trolley-assisted mining vehicle; at least one actuator (1,1A,1B) configured to raise and lower the trolley pole and to press the slide against the trolley line to form a contact force (F 1, F 2, F 3) between the slide and the trolley line; and a controller coupled to the at least one actuator (1,1A,1B) and configured to control the contact force (F 1, F 2, F 3) of the at least one slide based on pressure or power information received from the at least one actuator (1,1A,1B); wherein the contact force (F 1, F 2, F 3) is configured to be maintained inside a target range by increasing or decreasing pressure or power of the at least one actuator (1,1A,1B); characterized in that the controller is further coupled to at least one inclinometer of the mining vehicle configured to determine a ramp angle (ε) in relation to flat terrain; and the controller is configured to control the contact force (F 1,F 2,F 3) based on pressure or power information received from the at least one actuator (1,1A,1B) and according to the ramp angle (ε) to keep the contact force inside the target range, such that if the ramp angle (ε) is more than 0° the pressure or power of the at least one actuator (1,1A,1B) is configured to be increased to increase the contact force (F 1, F 2, F 3); and if the ramp angle (ε) is less than 0° the pressure or power of the at least one actuator (1,1A,1B) is configured to be decreased to decrease the contact force (F 1, F 2, F 3).