This exciting reference text is concerned with fluid power control‎.‎ It is an ideal reference for the practising engineer and a textbook for advanced courses in fluid power control‎.‎ In applications in which large forces and/or torques are required‎,‎ often with a fast response time‎,‎ oil‎-hydraulic control systems are essential‎.‎ They excel in environmentally difficult applications because the drive part can be designed with no electrical components and they almost always have a more competitive power/weight ratio compared to electrically actuated systems‎.‎ Fluid power systems have the capability to control several parameters‎,‎ such as pressure‎,‎ speed‎,‎ position‎,‎ and so on‎,‎ to a high degree of accuracy at high power levels‎.‎ In practice there are many exciting challenges facing the fluid power engineer‎,‎ who now must preferably have a broad skill set‎.‎