Applied Mechanics and Materials Vols. 433-435

Abstract: Based on the profiling principle, assemble bracket and servos into a six-degree-of-freedom biped robot. The robot use Arduino control panel as the motion controller. By analyzing the walking process and developing the sports programs, the overall motion analysis and design corresponding control program is made. So that the robot can be completed by a given program specified straight action.

Abstract: Mars Rover works in a complicated environment with uneven terrain. In order to improve the robot’s dynamic motion ability, traversability and stability, in this paper, an improved generalized predictive motion controller was denoted based on the analysis of the robot’s kinematic model and slipping constrains. The experiments demonstrate the feasibility of the control algorithm for the six-wheeled rocker Mars rover.

Abstract: This paper puts forward a method to control the industrial robots based on the NI Corporations LabVIEW virtual instrument technology. By designing the communication protocol between the LabVIEW software program on PC and industrial robots, the LabVIEW program can take the control of industrial robots by using RS232 serial ports, including the operation instructions' transmission, the feedback of the robots' running, and the data exchange between the two. The result shows that can effectively realize the motion control of industrial robots based on LabVIEW.

Abstract: One-degree-of-freedom ten-bar mechanism is a novel mechanism designed to clear loose debris for the search and rescue robot, which involves only one motor to generate the sweep motion. This paper established the kinematic model for the mechanism. The effects of the adjustable parameters on the tips trajectory are analyzed. From the results, a set of optimal parameters are obtained.

Abstract: In order to solve the problems that the functions of exiting upper-limbed rehabilitation robot are single and the structure is complicated, a 6-DOF exoskeleton upper-limbed rehabilitation robot is put forward. The kinematics model of the rehabilitation robot is established and kinematics positive and inverse solutions are solved using D-H transformation method. Three dimensional model of the rehabilitation robot is created by Pro/E and imported into ADAMS/view for the kinematics simulation by Mechanism/Pro. The gotten simulation results of the simulation verify the correctness of theoretical derivation and prove the smooth movement Characteristics of the scheme.

Abstract: The mobile robot's traveling path is generally made up of line and curve segments, so moving process often requires frequent stops to change the wheel steering angle to alter the direction of motion, which is lack of flexibility. In this paper, the use of the continuous-curvature curve algorithm (CCCA) solves the mutant problem of the mobile robot steering angle at turns. It can connect two line segments path so that the mobile robot achieves continuous deflection in swerve process, and it also can achieve a smooth shift within the steering angle 80^o.

Abstract: This paper studied the mapping problem for rescue robots. Being able to build a map of the rescue environment and simultaneously localize within this map is an essential skill for rescue robots. We formulate the SLAM problem as a graph whose nodes correspond to the poses of the robot at different points and whose edges represent constraints between poses. Optimizing large pose graphs has been a bottleneck for mobile robots, since the computation time of direct nonlinear optimization can grow rapidly with the size of graph. In this paper, we propose an efficient method for constructing and solving a linear problem. We demonstrate its effectiveness on a large set of real-world maps.

Abstract: Gait learning is usually under a so-called simulation based framework, where a simulation platform is firstly setup, and then based on which the gait pattern is learned via some learning algorithm. For the reason that there exist big differences between simulation platform and real circumstances, an additional adapting procedure is always required when learned gait pattern is applied to a real robot. This case turns out to be more critical for a biped robot, because its control appears more difficult than others, such as a quadruped robot. This leads the new scheme that the gait is directly learned on real robot to be attractive. However, under this real robot based learning scheme, most of those learning algorithms that commonly used under simulation based framework appear to be trivial, since they always needs too many learning trials which may wear out the robot hardware. Faced to this situation, in this paper, a surrogate model based gait learning approach for biped robot is proposed. And the experimental results on a real humanoid robot PKU-HR3 show the effectiveness of the proposed approach.

Abstract: To analyze further the dynamic characteristics of the robotcable system, similar experimental models of cables on the Junshan Highway Bridge are constructed. To study the effect of high-altitude wind load on the safe performance of the cable and the robots climbing ability, transverse wind load is simulated and wind-load equivalent experiments on cable vibration are performed on the robot to simulate high-altitude conditions. Vibration amplitude and acceleration of the cable slightly increase under Grade 7 wind, which demonstrates the stability of the cablerobot system.

Abstract: In order to realize automatic flexible drilling with high efficiency and good quality, a drilling system was established, which integrates the technology of laser measurement, off-line programming, computer control and robotics. In this system, the key coordinate frames are established by the laser tracker, the drilling programs are generated by the off-line programming and simulation system, the communication between the automatic drilling control system and the robot control system is based on the socket technique. By running drilling program, the moving platform, robot and the end effector can work automatically and harmoniously. In addition, the deviation compensation methods of hole position and its normal vector are proposed. The experimental results show that the efficiency of drilling can achieve 6 holes per minute, the position accuracy can be effectively controlled within 0.3mm, and the normal accuracy is better than 0.5°.