Linkage systems are mechanisms that connect different parts of a machine or structure, allowing them to work together efficiently. These systems can be found in various applications, from simple devices like bicycles to complex machinery in automobiles. They help transmit motion and force, ensuring that components operate in harmony. In engineering, linkage systems often consist of rods, levers, and joints that create specific movements. By adjusting the lengths and angles of these components, designers can achieve desired motion patterns. This principle is crucial in fields such as robotics and mechanical engineering, where precise control of movement is essential for functionality.