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Development of a high-performance force display for material science

Abstract It is important to know the inter-atomic bonding state in material for a new material design and analysis. Although the bonding states can be simulated based on the inter-atomic potential, it is difficult to understand them immediately in three-dimensional space. To understand the inter-atomic bonding state intuitively, it is effective to use force display systems. A high-performance force display system for material science is then developed. The force display consists of a parallel mechanism with direct-drive linear servo actuators. The mechanism is called a fixed linear type parallel mechanism. Since the actuators are fixed on the base, high-speed motion of the manipulator is possible, and the mechanism has a high load capacity and back drivability. These characteristics lead to a high-performance force feedback control. In the current paper, the design and prototyping are described. In addition, it is applied for the force display experiment of inter-atomic bonding state, and the effectiveness is demonstrated.