Advanced Materials Research Vols. 971-973

Abstract: Globular indexing CAM mechanism is a good indexing mechanism. As the working curve of CAM contour surface is no extending curved surface, there is certain difficulty to design processing. It is new kinds of design method that reverse engineering apply in rapid modeling of curved CAM. In this way, designer can complete curve of CAM reverse modeling, and the rationality of the model is verified. At the same time, it also can reverse modeling and the subsequent development of other products to provide a reference.

Abstract: This paper analyzes the stamping process of a rigid gasket, designs a set of progressive die for gasket. Three-position of the die includes the punching, cutting, bending and blanking. And compared with single-process die and compound die, the gasket can obtain better surface quality, the die can prevent poor strength and partial load, and punching hole in the ear and separating bending process can improve the accuracy of stamping parts, it has some reference value for the progressive die of the stamping parts. Throughout the design process, the model of rigid gasket and 3D mold design are established in Pro/E4.0 and PDX, this can significantly shorten the design cycle; the process of open-mode is simulated in the Simulation module.

Abstract: connecting rod mechanism under the condition of high speed operation, organization, the elastic dynamic response of not only make the institutions of trajectory deviation, also can cause fatigue failure, this paper set up an accurate view of the nonlinear dynamic model of analysis of linkage performance and characteristics of mechanical vibration, look for the causes of various vibration, and puts forward corresponding preventive measures and control strategy.

Abstract: Based on the beam outside the front car plate , for example, to use DYNAFORM software for finite element analysis method to start the process of drawing molding method, the research body stamping design and formability analysis. Numerical simulation techniques for forming sheet metal stamping simulation .

Abstract: For the existing Multi-rotor aircrafts, the under-actuation and strong coupling characteristics have a remarkable influence on their flight performance. In order to overcome this effect, a novel Hex-Rotor aircraft is proposed in this paper. Based on the unique configuration of its six driving rotors, the Hex-Rotor aircraft has the ability to achieve the real independent control on the space 6-DOF channels. An autonomous flight control system with neural network sliding mode is designed. The simulation proved that the novel Hex-Rotor aircraft has desired maneuvering capability,and thehe control system is able to guarantee the aircrafts tracking flight of the aircraft.

Abstract: To improve the ride comfort performance of electrical vehicle (EV) with in-wheel motor, the paper established a multi-body dynamic model of the vehicle, two road models and the suspension coordinate controller.The suspension coordinate, which can adjust suspension damper in real-time, was designed for the semi-active air suspension based fuzzy PID to control the suspension force, then the co-simulation were carried out under different conditions based on Adams and Matlab/Simulink. The results showed that the control method enhanced the ride comfort performance of EV with in-wheel motor significantly, especially the pitch performance.

Abstract: to realize computer-aided design and 3D modeling of the classical V-belt drive, a classical V-belt drive design and 3D modeling system was developed with the SolidWorks platform and using Visual Basic language. This system is composed of the design subsystem and the 3D modeling subsystem, which enabled the classical V-belt design process to be automatic and the fast 3D modeling of parts and assemblies. The application of design and 3D modeling for the classical V-belt drive system on the pot-seedling hole-forming machine has shown that this system can ensure accurate design results and shorten the design period.

Abstract: In order to solve design problems in the intermittent walking system, a walking system for the pot-seedling hole-forming machine was designed. It is composed of the rack, motor, driving shaft, driving wheel, guide wheel and geneva mechanism. Main structural parameters for this system were determined and a mathematical model for kinematic analysis built. Based on this model, kinematic parameters like displacement, velocity and acceleration were worked out. In addition, a variation curve was established. The prototype test has shown that this system can meet requirements on intermittent walking of the pot-seedling hole-forming machine and features simple structure, low cost, easy handling and maintenance.

Abstract: Distributed electrode switching device is an important part of high density resistivity instrument, and its performance will directly affect the usage of high density resistivity instrument in field work. This thesis introduces a design method of distributed electrode switching device. The device utilizes MCU to control magnetic latching relays to switch, and thus controls electrodes to switch automatically. It also utilizes RS485 chips to complete communication with adjoining electrode switching circuits. In order to test the device, this thesis introduces a software design method and the device turns out to be low power, small size and high reliable.

Abstract: This paper proposes a improved swing up controller design method. Throughusing the derivative of Lee Yap Andrianof function is negative to calculate theswing up control rule, and using fuzzy control technique to select controlparameters to avoid the swing up controller of the odd value and to improve thesystem control performance.