Enhanced Contour Control of SCARA Robot Under Torque Saturation Constraint

نویسندگان

  • Masatoshi Nakamura
  • S. Rohan Munasinghe
  • Satoru Goto
  • Nobuhiro Kyura
چکیده

Contour control of a robot arm is an act of the end-effector tip being moved along a reference Cartesian path, with an assigned velocity. When torque saturation occurs, and lasts for some time, contour deteriorations result. In addition, system delay dynamics also causes contour deteriorations. In this paper, an offline trajectory generation algorithm is described, which achieves both optimum avoidance of torque saturation and delay dynamics compensation.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Disturbance observer based path tracking control of robot manipulator considering torque saturation

This paper proposes a path-tracking algorithm to compensate for path deviation due to torque limits. The algorithm uses a disturbance observer with an additional saturation element at each joint of n degrees of freedom (DOF) manipulator to obtain a simple equivalent robot dynamic (SERD) model. This model is represented as an n independent double integrator system and is designed to ensure stabi...

متن کامل

Tracking and force control of a Scara robot under a constraint using sliding mode control

In this paper are proposed two control algorithms, based on the sliding-mode technique, to track a trajectory and regulate the force ejected by the end effector in a 4-DOF Scara robot system subject to a position constraint. The system may be in non-constrained motion at some time, or in constrained motion at some other time. It is shown that the nonlinear system is globally asymptotically stab...

متن کامل

Robust Control for a Scara Robot with Parametric Uncertainty

This paper presents a robust control law for controlling robot manipulators with parameter uncertainty, applied to a 4-DOF robot. The design of the controller is based on the Lyapunov function and the control law that is designed to compensate the uncertainties arising from unknown robot parameters and unknown payload. Major simulations results using numerical values of an industrial SCARA robo...

متن کامل

Terminal Sliding Control for a SCARA Robot

This paper presents a terminal sliding control law for controlling robot manipulators with parameter uncertainty, applied to a 4-DOF robot. By exploring some properties of robot manipulators, the proposed approach simplifies significantly the standard scheme of a terminal sliding control. Major simulations results using numerical values of an industrial SCARA robot prove the effectiveness of th...

متن کامل

High-Precision Contour Control by Gaussian Neural Network Controller for Industrial Articulated Robot Arm with Uncertainties

Uncertainties are the main reasons of deterioration of contour control of industrial articulated robot arm. In this paper, a high-precision contour control method was proposed to overcome some main uncertainties, such as torque saturation, system delay dynamics, interference between robot links, friction, and so on. Firstly, each considered factor of uncertainties was introduced briefly. Then p...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2000