Results 1 - 10
of
29
The Equivalence of Second-Order Impedance Control and Proportional Explicit Force Control,” Int
- Journal of Robotics Research
, 1995
"... This article discusses the essential equivalence of second-order impedance control with force feedback and proportional gain explicit force control with force feedforward. This is first done analytically by reviewing each control method and showing how they mathematically correspond for constrained ..."
Abstract
-
Cited by 3 (0 self)
- Add to MetaCart
manipula-tor control. For stiff environments the correspondence is exact. However, even for softer environments, a similar response of the system is indicated. Next, the results of an implementation of these control schemes on the CMU DD Arm II are pre-sented, confirming the predictions of the analysis
A Theoretical and Experimental Investigation of Impact Control for Manipulators
- International Journal of Robotics Research
, 1993
"... This paper describes a simple control strategy for stable hard-on-hard contact of a manipulator with the environment. The strategy is motivated by recognition of the equivalence of proportional gain explicit force control and impedance control. It is shown that negative proportional force gains, or ..."
Abstract
-
Cited by 24 (5 self)
- Add to MetaCart
of the control algorithms on the CMU DD Arm II system. The results confirm that manipulator impact against a stiff environment without bouncing can be readily handled by this novel control strategy. 1 Introduction There are two extreme modes of operation for a manipulator: position controlled motion through
A Theoretical and Experimental Investigation of Explicit Force Control Strategies for Manipulators
- IEEE Transactions on Automatic Control
, 1993
"... This paper presents a complete overview of basic strategies that have been proposed for force control of robot manipulators. First, the model of the plant to be controlled is reviewed. Next, the strategies are divided into force-based and position-based categories, according to previously reported i ..."
Abstract
-
Cited by 26 (4 self)
- Add to MetaCart
of the controllers are experimentally tested on the CMU DD Arm II , confirming the theoretical predictions. Among the important results presented is the conclusive demonstration for the first time that integral gain control is the best basic strategy for force control of manipulators. 1 Introduction Many automation
Analysis and Experimental Verification of a Fourth Order Plant Model for Manipulator Force Control
- IEEE Robotics & Automation Magazine
, 1994
"... This paper presents the analysis and experimental verification of a fourth order model of the arm/ sensor / environment system plant, to be use in evaluation of force control strategies. Both the undamped and underdamped cases are investigated. Approximations and qualifications, based on the reality ..."
Abstract
-
Cited by 4 (2 self)
- Add to MetaCart
the approximations used, two measures are taken. First, a simulation of the fourth order model is performed, and compared against experimental data obtained from the CMU DD Arm II system. Second, a stability analysis of several force control schemes acting on the modelled plant is reviewed and compared against
On The Equivalence of Second Order Impedance Control and Proportional Gain Explicit Force Control
, 1994
"... This paper discusses the essential equivalence of second order impedance control with force feedback and proportional gain explicit force control with force feedforward. This is first done analytically by reviewing each control method and showing how they mathematically correspond for constrained ma ..."
Abstract
-
Cited by 8 (6 self)
- Add to MetaCart
manipulator control. For stiff environments the correspondence is exact. However, even for softer environments similar response of the system is indicated. Next, the results of an implementation of these control schemes on the CMU DD Arm II are presented, confirming the predictions of the analysis
Real-Time Implementation and Evaluation
- IEEE Transactions on Robotics and Automation
, 1987
"... This paper presents the experimental results of the real-time performance of modelbased control algorithms. We compare the computed-torque scheme which utilizes the complete dynamics model of the manipulator with the independent joint control scheme which assumes a decoupled and linear model of the ..."
Abstract
- Add to MetaCart
of the manipulator dynamics. The two manipulator control schemes have been implemented on the CMU DD Arm II with a sampling period of 2 ms. We discuss the design of controller gains for both the computedtorque and the independent joint control schemes and establish a framework for comparing their trajectory tracking
Control Schemes for Manipulators
"... The manipulator trajectory tracking control problem revolves around computing the torques to be applied to achieve accu-rate tracking. This problem has been extensively studied in simulations, but real-time results have been lacking in the robotics literature. In this paper, we present the experimen ..."
Abstract
- Add to MetaCart
inertia matrix in the torque compu-tation. This observation is further supported by our analysis of the dynamics equations. The manipulator control schemes have been implemented on the CMU DD arm II with a sam-pling period of 2 ms. 1.
Using Tactile Data for Real-Time Feedback
- International Journal of Robotics Research
, 1991
"... Object recognition through the use of input from multiple sensors is an important aspect of an autonomous manipula-tion system. In tactile object recognition, it is necessary to determine the location and orientation of object edges and surfaces. We propose a controller that utilizes a tactile senso ..."
Abstract
-
Cited by 12 (0 self)
- Add to MetaCart
implementation, we use a Hybrid controller that uses both position and force set points. The edge tracker, pre-sented in this article, has been implemented on the CMU DD Arm II system. While the signal processing and the control computation require 30 ms, the tactile images are transferred from the sensor
Real-Time Control of CMU Direct-Drive Arm II Using Customized Inverse Dynamics
, 1984
"... Real-time control of flit manipuWtora requima Mficient conlrol agorithma to achieve high Wif rates. Pr imWementaUon of Ie inverse oynemics tO Kh high li effict gmimm utiliz the i m hdware. To ruce e comDuin u ton. Eul (N-E) gom !or real.time agolica e concegt of customizing e m Ior it deans. We yz ..."
Abstract
-
Cited by 2 (0 self)
- Add to MetaCart
yze e mun rui fm dig incgora a mificatiO. We illt r ia N-E dirt dd m). T N rcent. We e f rM.W Manipulator 1.
The Chimera II real-time operating system for advanced sensor-based robotic applications
- IEEE Transactions on Systems, Man, and Cybernetics
, 1992
"... Abstract: This paper describes the Chimera II Real-time Operating System, which has been developed for advanced sensor-based control applications. It has been designed as a local operating system, to be used in conjunction with a global operating system. It executes on one or more single board compu ..."
Abstract
-
Cited by 81 (40 self)
- Add to MetaCart
, and a configuration file library. Chimera II is currently being used with a variety of systems, including the CMU Direct Drive Arm II, the CMU Reconfigurable Modular Manipulator System, the Troikabot System for Rapid Assembly, and the Self-Mobile Space Manipulator. I.
Results 1 - 10
of
29