In the last paper, we proposed a winding and reaching control technique using a physical index of horizontal constraint force for a 3D snake-like robot. Using a snake like robot called SMA, the validity of the methods was shown experimentally. In this paper control methods in the last paper are summarized and a control method of an active impedance control of vertical joints is proposed for win...

A two stage calibration method for the parallel robot Delta 4 is presented. It allows one to identify the offsets on the three first joints and the absolute location of the robot base. It involves a cheap displacement sensor and dedicated targets which can be easily moved on the work area. Intensive simulations show the robustness of the protocol and experimental results validate this procedure.

a general robotic mechanism was presented for in-pipe inspection oflevel pipes with varied diameter or curved pipelines. the robot employed three legs comprised of parallelogram linkages mechanism which enables adapting to various elbow joints in the piping systems. the curvatures in pipeline are the most important constraints in front of the robot through navigation process. to study the adapt...

Tool tracking is an accepted capability for computer-aided surgical intervention which has numerous applications, both in robotic and manual minimally-invasive procedures. In this paper, we describe a tracking system which learns visual feature descriptors as class-specific landmarks on an articulated tool. The features are localized in 3D using stereo vision and are fused with the robot kinema...

This paper studies the performance of integer and fractional order controllers in a hexapod robot with joints at the legs having viscous friction and flexibility. For that objective the robot prescribed motion is characterized in terms of several locomotion variables. The walking performance is analysed through the Nyquist stability criterion and several indices that reflect the system dynamica...

This paper presents the design and prototype of a small quadruped robot whose walking motion is realized by two piezocomposite actuators. In the design, biomimetic ideas are employed to obtain the agility of motions and sustainability of a heavy load. The design of the robot legs is inspired by the leg configuration of insects, two joints (hip and knee) of the leg enable two basic motions, lift...

Abstract—The purpose of this research is to make the biped walking robot walk considering the theory of passive walking. Two motors were installed at the hip joints connecting both legs to torso link. The numerical calculations about walking motion were performed. The proportional (P) or proportionaldifferential (PD) control law was used in the calculations. The experimental robot has been bein...

This paper suggests an architecture for the robot control system that is based on the network. The main advantage of the architecture is that the weight of the control system is far lighter and the size is far smaller without reduction of the performance. In addition, the cabling cost and the maintenance effort can be drastically reduced. This paper considers the communication latency and the s...

-An original procedure for the estimation of the barycentric parameters of a robot is presented. This procedure requires only the processing of measurements provided by an external experimental set-up. The procedure is based on the property that the relations between the robot motion and its reactions on the bedplate are completely independent of the internal joints forces. A convincing validat...

The goal of this study is to investigate the effect of actuator position on the theoretical energy consumption of an electrically powered bipedal robot. Specifically, the study focuses on the legs of the afore-mentioned robot because their function is limited, as they are primarily used for either locomotion or standing, and thus, this is suitable for optimization. Furthermore, the hip and knee...