This paper presents a technology for remotely navigating a magnetized microrobot in three-degree-of-freedom (3-DOF) using magnetic energy. The magnetic energy source is a magnetic drive unit that consists of six iron-core electromagnets, a soft-iron yoke, and a soft-iron pole-piece. The dynamic models of the magnetically navigated microrobot were derived from the magnetic field model in the wor...

in this paper, according to high load capacity and rather large workspace characteristics of cable driven robots (cdrs), maximum dynamic load carrying capacity (dlcc) between two given end points in the workspace along with optimal trajectory is obtained. in order to find dlcc of cdrs, joint actuator torque and workspace of the robot constraints concerning to non-negative tension in cables are ...

Mechanical vibrations adversely affect mechanical components, and in the worst case, lead to serious accidents by breaking themselves. To suppress vibrations, various studies have been conducted on vibration isolation, suppression, resistance. In addition, technologies actively rapidly developed recent years, it has reported that can be suppressed with higher performance. However, these mostly ...

We consider the constrained infinite time optimal control problem for the class of discrete time linear hybrid systems. When a linear performance index is used the infinite time optimal solution is a piecewise affine (PWA) state feedback control law. In this paper we present an algorithm that computes the optimal solution in a computationally efficient manner. It combines a dynamic programming ...

Recently, a number of papers have shown that for many domains, using multiple heuristics in independent searches performs better than combining them into a single heuristic. Furthermore, using a large number of “weak” heuristics could potentially eliminate the need for the careful design of a few. The standard approach to distribute computation in these multi-heuristic searches is to rotate thr...

The 3 degree of freedom (3-DOF) helicopter system is a typical higher-order times, instability, multi-variable, nonlinear and strong coupling control system. This paper presents the analysis of the mathematical model and the basic principle of PID control and fuzzy PID control, which are based on 3-DOF helicopter systems. In allusion to balance control of 3-DOF helicopter system, PID controller...

Wood is an organic renewable natural resource. Cellulose, hemicellulose and lignin in wood are used tissue engineering, biomedicine other fields because of their good properties. This paper reported that the possibility fiber gel material molding preparing were researched based on as a 3D printing material. A five-degree freedom hybrid three nozzle printer was designed. The structural analysis,...

A Space Free-Flying Robot (SFFR) includes an actuated base equipped with one or more manipulators to perform on-orbit missions. Distinct from fixed-based manipulators, the spacecraft (base) of a SFFR responds to dynamic reaction forces due to manipulator motions. In order to control such a system, it is essential to consider the dynamic coupling between the manipulators and the base. Explicit d...

Based on the characteristic of a type of commercial vehicle, a multi-body model of its full suspension system with twenty Degree of Freedom (DOF) was established in MSC.ADAMS. After evaluating relative condition parameters such as stiffness and damping index on the simulation model, the effects of outside exciting on the suspension system have been worked out numerically. The harmonic response ...

A novel concept of neural force position control in cartesian space NFC was developed and applied The NFC concept for a DOF industrial robot with DOF sensor forces torques is based on a cycle time of only msec NFC features include Sensor and trajectory data processing in cartesian space Learned mapping operations for force kinematics and dynamics with neural networks Singularity robust ness in ...