This book focuses on the latest developments in the field of engineering. Chapter One reviews an extensive study on the design of experiment methods. Chapter Two presents controller designs using the traditional proportional integral derivative (PID) control algorithm to control a planar two-link flexible manipulator. Chapter Three presents an active vibration control (AVC) system for trailed two-wheeled implements (TTWI) avoiding instruments damage. Chapter Four reports on the kinematics of a series-parallel manipulator whose architecture is based on the topology of the 3RPS tangential parallel manipulator where R, P and S stand, respectively, for Revolute, Prismatic and Spherical joints. Chapter Five discusses the estimation of saturated hydraulic conductivity. Chapter Six proposes a new and robust model to predict the dynamical behavior of the Liquid Diffusion Phenomenon (LDP).