In naval engineering and related disciplines, it is common for dynamic models of the human body to be used in conjunction with quantitative records of body and ship motions, in order to study human balance behaviour while performing various shipboard activities. Research in this area can lead to improvements in ship operations and designs that improve crew safety and efficiency. This paper pres...

Our previous work demonstrated the advantages of MEMS vibratory gyroscopes with 1 degree of freedom (DOF) drive and 2-DOF sense modes which were shown to be robust to temperature drifts. These devices were designed with frequencies below 1 kHz; many applications, however, require gyroscopes with operational frequencies above 1 kHz for the rejection of ambient vibrations. This paper discusses th...

This paper presents a general framework for the computation of projective invariants of arbitrary degree of freedom (dof) trihedral polyhedra. We show that high dof. figures can be broken down into sets of connected four dof. polyhedra, for which known invariants exist. Although the more general shapes do not possess projective properties as a whole (when viewed by a single camera), each subpar...

An integrated chassis control (ICC) system with active front steering (AFS) and yaw stability control (YSC) is introduced in this paper. The proposed ICC algorithm uses the improved Inverse Nyquist Array (INA) method based on a 2-degree-of-freedom (DOF) planar vehicle reference model to decouple the plant dynamics under different frequency bands, and the change of velocity and cornering stiffne...

In the analysis and calculation of degree freedom (DOF) mechanisms, it is generally a complicated problem to judge virtual constraint correctly. Under what conditions do constraints exist, how many are there? Understanding these problems can contribute effectively tackling difficulty calculating DOF. With planar mechanisms as research object, among various components simplified into point const...

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,...

This paper presents a numerical implementation of inverse and direct kinematics of a 3-DOF parallel robot with R-P-S (Revolute-Prismatic-Spherical) joint structure using Matlab. The robot has two degrees of orientation freedom and one degree of translatory freedom. The inverse kinematics was expressed in term of Z-Y-Z Euler angles and direct kinematics was solved numerically using Newton-Kantor...

In recent years, degree-of-freedom (DoF) based models were proven to be very successful in studying MIMObased wireless networks. However, most of these studies assume channel matrix is of full-rank. Such assumption, although attractive, quickly becomes problematic as the number of antennas increases and propagation environment is not close to ideal. In this paper, we address this problem by dev...

A multi-degree of freedom (multi-DOF) ultrasonic motor is anticipated as an actuator for the next generation because it can drive three-DOF motion with high torque and low noise. Before a multi-DOF ultrasonic motor can be used as a servomotor in actual robots, we have to develop a proper pre-loading mechanism and control algorithm for quick multi-DOF motion. This paper proposes a pre-loading me...