In this paper, we attempt to equip the bi-articular driving system with a robot arm. Bi-articular driving system is a unique actuator of animals and contribute to animals’ flexible motion control. The arm has an actuator that can drive two joints simultaneously, so there is difference between conventional robot arms and the robot arm. Conventional robots have actuators in each joint, so they ca...

When developing a humanoid robot, the choice of the system driving its joints is of crucial importance for the robot’s robustness, technical reliability, ease of maintenance, as well as its degree of autonomy. Here, we present a novel, modular actuator system of the humanoid robot Myon. Both the concept of the actuator system and the composition of the individual modules which it consists of ar...

We describe a new Compliant Articulated Robot Leg, CARL, which we constructed as a prototype for an autonomous robot quadruped. The leg is designed for dynamic walking, trotting and bounding gaits, with an expected top speed of 3m=s. It is an anthropomorphic (articulated) 3 DOF design with revolute joints as opposed to prismatic joints for improved mobility, simplicity and low friction. It empl...

In recent years, researchers have been dedicated to the study of underactuated manipulators which have more joints than control actuators. In previous works, one always assumes that there is enough dynamic coupling between the active and the passive joints of the manipulator, for it to be possible to control the position of the passive joints via the dynamic coupling. In this work, the authors ...

this study on the design of pid controllers for flexible single-arm robot system optimizationpso method is focused so that the coefficients of the pid controller are reduced. in this study,pid controller and pso algorithm have been described and then by using matlab, pidcontrol was simulated. then by pso algorithm, attempts to reduce the pid coefficients are givenby simulation. finally pid coef...

In this paper, we developed two noble mechanisms for improving the motions of humanoid robots. The double spherical hip joint provides the equivalent function of waist joints without actually adding them. The backlush clutch is a new drive mechanism for knee joints of humanoid robots, which enables switching between drive and free modes. We developed a humanoid robot equipped with these two mec...

We consider the problem of trajectory planning and control for an XYnR̄ planar robot with the first two joints (rotational or prismatic) actuated and n rotational passive joints, moving both in the presence and the absence of gravity. Under the assumption that each passive link is attached at the center of percussion of the previous passive link, dynamics of the system can be expressed through t...

We describe a new Compliant Articulated Robot Leg, CARL, which we constructed as a prototype for an autonomous robot quadruped. The leg has been designed for dynamic walking, trotting and bounding gaits, with an expected top speed of 3m=s. It is an articulated 4 degree of freedom design with revolute joints as opposed to prismatic joints for improved mobility, simplicity and low friction. It em...

In this paper, we propose a biped robot each of whose legs is composed of two 3-DOF parallel platforms that are linked serially. The thigh of each leg consists of a 3-DOF orientation platform and the shank consists of 3-DOF asymmetric parallel platform. The former consists of 3 active linear actuators and 7 passive joints. And the latter consists of two active linear actuators, one active rotat...