An actuating system, comprising: a fluid supply for supplying a fluid; an actuator, including: a piston having a piston rod, a first piston face, and a second piston face; a piston housing substantially encasing the piston and defining a first volume and a second volume respectively adjacent to the first piston face and the second piston face; and a first port and a second port fluidly connected respectively with the first volume and the second volume of the piston housing; a valve fluidly connected to the fluid supply and the actuator, and having an exhaust port; and a fluid energy harvester fluidly connected to the actuator, characterized in that the fluid energy harvester comprises: a housing having at least one port and an outlet, and said housing defining at least one fluid passageway therein; a turbine disposed within the housing and configured to convert at least a portion of potential energy in an exhaust fluid; an electric generator operably coupled to the turbine; a charging controller electrically coupled to the generator; a storage medium electrically coupled to the generator and configured to store the electrical current generated by the generator; and a nozzle configured to control a flow of the exhaust fluid; the turbine is located in the housing such that the turbine receives exhaust fluid from one of the ports; - the generator is arranged coaxially with regard to the turbine; - a cover which is connected to the housing receives the generator the charging controller and the storage medium; the at least one fluid passageway of the housing includes a nozzle; a moveable needle can move relative to the nozzle and can engage with said nozzle to block the flow of the fluid from passing through the nozzle, and the moveable needle can disengage from said nozzle to allow the flow of the fluid to pass through the nozzle and thereby to the turbine; the moveable needle controls at least one of the fluid entering and exiting said actuator such that a speed of the piston is regulated. a fluid supply for supplying a fluid; an actuator, including: a piston having a piston rod, a first piston face, and a second piston face; a piston housing substantially encasing the piston and defining a first volume and a second volume respectively adjacent to the first piston face and the second piston face; and a first port and a second port fluidly connected respectively with the first volume and the second volume of the piston housing; a piston having a piston rod, a first piston face, and a second piston face; a piston housing substantially encasing the piston and defining a first volume and a second volume respectively adjacent to the first piston face and the second piston face; and a first port and a second port fluidly connected respectively with the first volume and the second volume of the piston housing; a valve fluidly connected to the fluid supply and the actuator, and having an exhaust port; and a fluid energy harvester fluidly connected to the actuator, characterized in that the fluid energy harvester comprises: a housing having at least one port and an outlet, and said housing defining at least one fluid passageway therein; a turbine disposed within the housing and configured to convert at least a portion of potential energy in an exhaust fluid; an electric generator operably coupled to the turbine; a charging controller electrically coupled to the generator; a storage medium electrically coupled to the generator and configured to store the electrical current generated by the generator; and a nozzle configured to control a flow of the exhaust fluid; a housing having at least one port and an outlet, and said housing defining at least one fluid passageway therein; a turbine disposed within the housing and configured to convert at least a portion of potential energy in an exhaust fluid; an electric generator operably coupled to the turbine; a charging controller electrically coupled to the generator; a storage medium electrically coupled to the generator and configured to store the electrical current generated by the generator; and a nozzle configured to control a flow of the exhaust fluid; the turbine is located in the housing such that the turbine receives exhaust fluid from one of the ports; - the generator is arranged coaxially with regard to the turbine; - a cover which is connected to the housing receives the generator the charging controller and the storage medium; - the generator is arranged coaxially with regard to the turbine; - a cover which is connected to the housing receives the generator the charging controller and the storage medium; the at least one fluid passageway of the housing includes a nozzle; a moveable needle can move relative to the nozzle and can engage with said nozzle to block the flow of the fluid from passing through the nozzle, and the moveable needle can disengage from said nozzle to allow the flow of the fluid to pass through the nozzle and thereby to the turbine; the moveable needle controls at least one of the fluid entering and exiting said actuator such that a speed of the piston is regulated.