Time filter

Source Type

Yang S.Q.,Kunming Shipborne Equipment Research and Test Center
Mechatronics Engineering and Electrical Engineering - Proceedings of the 2014 International Conference on Mechatronics Engineering and Electrical Engineering, CMEEE 2014 | Year: 2015

Locking pin is one of the most important units in surface AUVs launchers; its reliability and life impact directly on the reliability of the AUVs launch. In optimisation design of locking pin, a lot of uncertainties affect its reliability. In this Paper, Reliability-Based Design Optimisation (RBDO) is proposed to handle the locking pin design under two kinds of uncertainties and the First-Order Reliability Method (FORM) is used to calculate reliability of its performance functions. Finally, an engineering example is used to illustrate the proposed model for the locking pin of the lock mechanism in surface AUVs launcher. © 2015 Taylor & Francis Group, London.


Zhu Q.,Kunming Shipborne Equipment Research and Test Center
IEEE Region 10 Annual International Conference, Proceedings/TENCON | Year: 2013

We have accomplished a design about the control system of the unmanned surface vehicle (USV) with double propellers. Firstly, we introduce the hardware design of control system of USV. Then, the mathematics model of a boat based on double bodies is established, and it provides the basis for the study of the navigation control arithmetic. And then, navigation control technology of the USV is in-depth researched. Finally, the corresponding software for USV is designed. The experiments proved that control system of the USV has some advantages including modularity, intelligent, high reliability and simple operation etc. © 2013 IEEE.


Qiu Q.,Kunming Shipborne Equipment Research and Test Center
IEEE Region 10 Annual International Conference, Proceedings/TENCON | Year: 2013

The 32 channels of underwater acoustic signal preprocessing device was designed. It could accord to the upper computer commands to control the gain of one or a few channels. Or it could be controlled the gain of all the channels manually. Based on consideration of the modularization and standardization, motherboard and signal preprocessing circuit board was designed. Motherboard designed primarily use C8051 SoC. It implements the commands receiving and signal gain controlling, etc. The signal preprocessing circuit board implements signal amplification and filtering. Signal amplification has seven gains to choice. Filter designed for modularization. It has same package but different frequency. It could accord to the signal frequency to choose a different filter. © 2013 IEEE.


Xu F.,Kunming Shipborne Equipment Research and Test Center
Sensors and Transducers | Year: 2014

The four-element cross array is consisted of four piezoelectric transducers arranged in the form of cross. Passive directing with cross array is a very useful method for acoustic target detecting. This paper presented the algorithm of acoustic passive directing with cross array based on time delay estimation, and accurate formula and approximate formula for calculating the target's direction were proposed. The extent of application for approximate formula was suggested through analyzing the approximate error. The paper provided a basis for choosing the appropriate size of four-element cross array in practical engineering application. © 2014 IFSA Publishing, S. L.


Chen L.,Kunming Shipborne Equipment Research and Test Center
2014 IEEE International Conference on Mechatronics and Automation, IEEE ICMA 2014 | Year: 2014

Path planning and obstacle avoidance is an important component of the UUV autonomous navigation and control system. The UUV is work usually in the unknown environment and the optimal or sub-optimal collision-free path is found according to a certain evaluation criteria. The artificial potential field algorithm is one of the path planning algorithms used widely. However, in this algorithm, the UUV is easy to fall into the trap local minimum area and even sometimes cannot reach the target point. In this paper, the parameter was improved to solve the UUV unreachable problem and the virtual obstacle was added to overcome the local minimum problem. The results of simulation demonstrate the effectiveness and feasibility of the proposed algorithm effectively. © 2014 IEEE.


Qiu Q.,Kunming Shipborne Equipment Research and Test Center
Proceedings - 2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation, IMSNA 2013 | Year: 2013

According to the characteristics of the unmanned underwater vehicle (UUV) with towed line array, puts forward a method of data transmission of towed line array. Introduced the structure of data transmission node of towed line array, and completed the design of the transmitting and receiving node HOT Link controller. Aiming at the UUV using data processing platform is ADSP TS101, the communication protocol of TS101 link port designed using FPGA. This makes the HOT Link received data through data processing of link port transmission to the TS101's processor. It has proved that this method can realize high efficient transmission for towed line array. © 2013 IEEE.


Deng L.L.,Kunming Shipborne Equipment Research and Test Center
Applied Mechanics and Materials | Year: 2014

The phase spectrum time delay estimation (TDE) method is being used widely in trajectory tracking and target location, which due to its superiority in computation load and accuracy. However, the precision of TDE had declined severely as the result of noise. This paper plans to analyze the factor of noise, which has effects on the performance of phase spectrum TDE algorithm based on the difference principle. Theoretical analysis and computer simulation show that the fluctuation of phase caused by noise leads to poor performance. Furthermore, the extent of the influence relates to the time delay and signal frequency. © (2014) Trans Tech Publications, Switzerland.


Xie Y.H.,Kunming Shipborne Equipment Research and Test Center
Applied Mechanics and Materials | Year: 2014

Considering the problem of dynamic positioning Systems for the slowly-varying disturbances, a new kalman filter using position and acceleration feedback is presented. The kalman filiter separates the WF motions from the measured position and linear acceleration, and estimates the LF position, velocity and acceleration. The stability of this filiter is proven by applying input-to-state (ISS) stability theory. Finally, the computer simulation is given to demonstrate the effectiveness of the proposed method. © (2014) Trans Tech Publications, Switzerland.


Xu F.,Kunming Shipborne Equipment Research and Test Center
Chinese Journal of Sensors and Actuators | Year: 2012

A novel three-dimensional force flexible tactile sensor based on conductive rubber is presented. The sensor has good flexibility and can be used to measure three-dimensional force. The applied force information can be obtained through detecting the resistance of the conductive rubber. In this paper, we describe the sensor's structure, and establish a three-dimensional force parallel detection mathematical model based on the force-sensitive conductive rubber's ideal mechanics characteristics. Based on this model, the sensor can detect the 3-D force information applied on any point, multi-point as well as sensor's surface.


Xie Y.H.,Kunming Shipborne Equipment Research and Test Center
Advanced Materials Research | Year: 2014

In order to deal with the model uncertainties of ROV (remotely operated vehicles) caused by current disturbances, umbilical cable and robotic manipulators, an adaptive backstepping controller and an adaptive PD controller are applied to control the ROV. The adaptive backstepping controller is used to control the horizontal motion, and the adaptive PD controller is applied to control the Vertical motion. Finally, the method is verified effective by the computer simulation. © (2014) Trans Tech Publications, Switzerland.

Loading Kunming Shipborne Equipment Research and Test Center collaborators
Loading Kunming Shipborne Equipment Research and Test Center collaborators