Adaptive Intelligent Detection Based On 6-DOF Manipulator
Chun Yin
1
, Bo Zhang
1
, Jianhong Xue
1
, Xuegang Huang
2
, Jing Zhou
1
, Yuhua Cheng
1
1. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, P.R. China
E-mail: yinchun.86416@163.com; yhcheng@uestc.edu.cn
2. China Aerodynamics Research & Development Center, Mianyang 621000, P.R. China
E-mail: emei-126@126.com
Abstract: In this paper, a feedback linearization control for trajectory tracking of 6-DOF robotic manipulator is pro-
posed, which can realize the dynamic tracking of a given angle trajectory. The high-precision laser tracker is used to
measure the spatial pose, including position and orientation, of tested sample. And the pose sequence is considered
as the expected value of the end effector going through. An interpolation method is proposed for the sake of smooth
transition of poses. Then the pose trajectory is converted to joint angle trajectory by using inverse kinematics, which is
regarded as the expected value of dynamics system of robotic manipulator. Simulation results show the effectiveness of
the proposed approach.
Key Words: Feedback linearization; pose tracking; Interpolation method; Kinematics
1 Introduction
Laser tracking measurement system is a high-precision in-
dustrial measuring instruments. The measurement accu-
racy of it is high, what’s more it could measure the ob-
ject faster in dynamic measurement, as well it easily to
be moved, etc. Laser trackers have been widely used in
aerospace, automobile manufacturing, electronics industry,
high-energy particle accelerator engineer, large-scale me-
tering and other industries, such as testing the surface de-
sign error of the specimen, tracking the dynamic position
of the specimen. In 2016, P. Munoz and his team analyzed
the effects of ambient air and turbulence on the beam path
for the laser tracker, and analyzed the stability of the test
[1]. B. Muralikrishnan and his team studied the large-scale
measurement and analyzed the modeling error for the laser
tracker [2]. J. Conte and his team proposed a new motion
model and a new identification parameter process to ana-
lyze the sensitivity of a laser tracker with a rotating head
beam source[3]. Meanwhile, with the robotic industry lev-
el, including control technology, manufacturing technolo-
gy, materials technology continues to develop, the robot
has been widespread used in the field of automation, such
as aerospace and other large equipment manufacturing test-
ing, food processing, medical surgery. Although the ac-
curacy of industrial-grade robots is already high, in order
to achieve higher accuracy and more intelligent to work
the production, we must design a new system to achieve
adaptive intelligent detection, and optimize the precision
of modeling control and other aspects. In 2010, M., Tarokh
and his team used a new inverse kinematics solution to
solve the joint angle redundancy problem of robot manip-
ulators [7-9]. In 2014, S. Kucuk, Z. Bingul proposed an
inverse kinematics to analysis the inverse kinematics of the
This work was partially supported by National Basic Research Pro-
gram of China (Grant 61503064 and 51502338).
offset-wrist manipulator [10-14]. In 2013, ED Markus, JT
Agee, et al. Proposed a modeling method for a new six-
degree-of-freedom industrial manipulator [5], and in 2016,
a tracking control method for industrial robots with the
same six degrees of freedom was presented [4]. In 2016,
V. Kumar and his team studied the fractional operator for
the robustness of the controller for a rigid manipulator with
two links, and proposed a nonlinear adaptive algorithm for
tracking control [6].
The first part of this paper describes the purpose of us-
ing the laser tracker briefly; The second part introduces the
method of calculating the positive and inverse solutions of
kinematics, and uses the interpolation method to generate
the path; The third part introduces the design of the dynam-
ics controller and the proof of the stability of the controller;
The fourth part presents the experimental simulation of the
tracking control of six joint angle and depicts the end of the
robot position trajectory curve.
2 Laser tracker
This paper proposes the using of high precision laser track-
er to measure the spatial pose of tested sample, including
position and orientation. Then the pose sequence P
i
(i =
1,...,m) is obtained, which is represented by homoge-
neous matrix, including the rotating part and the translation
part.
3 Kinematics
Corresponding to the physical mechanical structure, the ac-
tual model was modeled by using the D-H method. Then
we establish coordinates (x
i
− y
i
− z
i
)(i =1, 2 ···6) in
each joint angle, θ
i
(i =1, 2 ···6) represents the rotation
angle around the z axis, and a
i
(i =1, 2) indicates the
length of each vertical line (the length of connecting rod),
next the d
i
(i =1, 4, 6) expresses the distance (or joint off-
set) between two adjacent vertical lines on the z-axis. The
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2018 IEEE