© The 2022 International Conference on Artificial Life and Robotics (ICAROB2022), January 20 to 23, 2022 Robot Technology, and its Development Trend Takao Ito Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama, Higashi Hiroshima, 739-7527, Japan E-mail: itotakao@hiroshima-u.ac.jp Abstract Robot technology has been changed dramatically with massive development of internet environment. The author reviewed a plethora of literature and investigated advanced robot technologies. Today, most of typical robot technologies are used in single-cause-oriented products, such as robot vacuum cleaner and Asimo, a humanoid robot invented by Honda. These advanced products played important role in our modern society. For further development, a networking robot system with advanced technologies of internet and artificial intelligence is required to copy with the uncertainty in the future. Different technology should be combined and linked together for multiple-goal-oriented approach in the networking robot system. For evaluating the validity of our new system, a centrality index is introduced in this research. Keywords: networking robot system, swarm, optimization, fragility. 1. Introduction A plethora of studies on robot technology from the viewpoint of materials engineering, information processing technology such as pattern recognition and image processing, artificial intelligence, network, and biotechnology have been published in the past decades. However, studies focusing on the review of current robot technology to clarify its development trend are still sparse. This paper proposes a new networking robot system and a critical index to measure the structure of the system after reviewing the relevant literatures. This paper contributes to the development of robot technology by: (1) Identifying one of the future development directions, and (2) Proposing a new index to measure system structure to ascertain the effective system for future development. This manuscript is structured as follows: Section 2 introduces the background of this research with literature review. In section 3, the paper explicates networking robot system, and calculates its structure using a new index of fragility. Based on our discussion, the study limitations are identified and directions for future research are proffered in the final section. 2. Background A robot is the product of the robotics field, where programmable machines are built that can assist humans or mimic human actions while robotics is the intersection of science, engineering and technology that produces machines, called robots, that substitute for and/or replicate human actions [1]. Robot technology has been recognized as playing an important role not only in industrial society, but also in our daily life. Recently, many studies focusing on robot have been published. A tracking system, also known as a locating system, one of the important technologies in robotics, is used for the observing of objects on the move and supplying a timely ordered sequence of location data for further processing. A tracking control of a two-wheeled mobile robot in both kinematic and dynamic models has been invested [2]. Chen and Jia suggested to use differential 378