High Reliability Light Weight Multi-mission Amplifier System

2017 ◽  
pp. 55-62
Author(s):  
Susumu Kitazume ◽  
Yosuke Takahara ◽  
Chihiro Hayashi ◽  
Rowan Gilmore
Keyword(s):  
High Reliability ◽  
Light Weight

scholarly journals Extraction and Filter Algorithm of Guidance Information for Full-strapdown Seeker on Rotation Missile

2018 ◽  
Vol 214 ◽  
pp. 03008 ◽  
Author(s):  
YongShan Liu ◽  
Li Song ◽  
JingLong Li
Keyword(s):  
Kalman Filter ◽  
Extended Kalman Filter ◽  
Simple Structure ◽  
Unscented Kalman Filter ◽  
High Reliability ◽  
Engineering Application ◽  
Line Of Sight ◽  
Light Weight ◽  
Rate Information ◽  
Guidance Information

Strapdown seekers are superior to platform seekers for their simple structure, high reliability and light weight but cannot measure the line-of-sight angle rate information for the guidance of rotation missile directly. This paper aims at the engineering application of full-strapdown seekers on rotation missile problem. Firstly, a line-of-sight angle rate solution model is established. Based on the MATLAB, the extended Kalman filter (EKF) algorithm and unscented Kalman filter (UKF) algorithm are used to estimate the line-of-sight angle rate information of the full-strapdown seekers. The results show that using EKF filter and UKF filter both can obtain effective guidance information and the UKF’s effect is better.

Virtual Prototyping Simulation of Flexible Multi-Point Auxiliary Support Fixture for Blade Machining

2014 ◽  
Vol 496-500 ◽  
pp. 1256-1259 ◽  
Author(s):  
Yan Cao ◽  
Jing Li ◽  
Jian Hui Tian ◽  
Qing Ming Fan
Keyword(s):  
Cutting Force ◽  
High Reliability ◽  
Virtual Prototyping ◽  
Light Weight ◽  
Machining Quality ◽  
The Poor ◽  
Blade Machining ◽  
Thin Walled ◽  
Processing Difficulty

Spatial curved blades have been widely used in major aerospace manufacturers due to their light weight, high structural efficiency, high reliability, etc. However, their processing deformation, processing difficulty, and so on limit their use. In order to deal with the situation, flexible multi-point auxiliary supporting fixture for the processing of spatial curved thin-walled parts has become a major topic of current researches. The layout of positioning and clamping points of the flexible multi-point fixture direct affects the stiffness of clamping positions on the thin-walled parts to be processed. When cutting force is definite at a certain point in machining, the greater the stiffness at the processing positions on the part, the smaller the processing deformation due to the cutting force. Therefore, in order to reduce the machining deformation due to the poor stiffness, a suitable positioning and clamping layout is needed to improve the surface stiffness at the machining positions. Thus, the machining quality of thin-walled parts can be improved.

scholarly journals Design of Direct-Drive Mechanical Arms

1983 ◽  
Vol 105 (3) ◽  
pp. 312-316 ◽  
Author(s):  
Haruhiko Asada ◽  
Takeo Kanade
Keyword(s):  
Rare Earth ◽  
High Speed ◽  
Design Theory ◽  
High Reliability ◽  
Kinematic Model ◽  
Light Weight ◽  
Direct Drive ◽  
Mass System ◽  
Compact Size ◽  
High Torque

This paper describes the design concept of a new robot based on the direct-drive method using rare-earth d-c torque motors. Because these motors have high torque, light weight and compact size, we can construct robots with far better performance than those presently available. For example, we can eliminate all the transmission mechanisms, such as reducers and chain belts, between the motors and their loads, and construct a simple mechanism (direct-drive) where the arm links are directly coupled to the motor rotors. This elimination can lead to excellent performance: no backlash, low friction, low inertia, low compliance and high reliability, all of which are suited for high-speed, high-precision robots. First we propose a basic configuration of direct-drive robots. Second a general procedure for designing direct-drive robots is shown, and the feasibility of direct drive for robot actuation is discussed in terms of weights and torques of joints. One of the difficulties in designing direct-drive robots is that motors to drive wrist joints are loads for motors to drive elbow joints, and they are loads for motors at shoulders. To reduce this increasing series of loads is an essential issue for designing practical robots. We analyze the joint mass system for simplified kinematic model of the direct-drive robots, and show how the loads are reduced significantly by using rare-earth motors with light-weight and high torque. We also discuss optimum kinematic structures with minimum arm weight. Finally, we describe the direct-drive robotic manipulator (CMU arm) developed at Carnegie-Mellon University, and verify the design theory.

Multiplexing Technology Research of Fiber Optic Gyroscope

2014 ◽  
Vol 574 ◽  
pp. 494-497
Author(s):  
Dong Sheng Yang
Keyword(s):  
Light Source ◽  
Small Volume ◽  
Fiber Optic ◽  
High Reliability ◽  
Integrated Design ◽  
Light Weight ◽  
Technology Research ◽  
Fiber Optic Gyroscope ◽  
Design Technology ◽  
Output Synchronization

:Proposed in this paper the multiplexing technology of three axis of fiber optic gyroscope integrated design technology, this kind of fiber optic gyroscope has high reliability, fast operation and reaction, triaxial output synchronization, three axis scale factor and its nonlinear affected by light source is the same, and small volume, light weight, low consumption, especially suitable for gyro miniaturization, lightweight requirements to weapons system.

Military qualification of a high-reliability, light-weight 24 V/30 Ah aircraft battery

2001 ◽  
Vol 16 (1) ◽  
pp. 29-32
Author(s):  
B. Jay ◽  
A. Datta ◽  
A. Goodman ◽  
W.R. Johnson
Keyword(s):  
High Reliability ◽  
Light Weight

The Application of Advanced Composite Material in Tail Driver Shaft of the Helicopter

2011 ◽  
Vol 86 ◽  
pp. 365-369
Author(s):  
Ke Feng Li ◽  
Tian Hui Xia
Keyword(s):  
Composite Material ◽  
Critical Speed ◽  
Erosion Resistance ◽  
High Reliability ◽  
High Strength ◽  
Light Weight ◽  
Advanced Composite ◽  
Dynamic Performances ◽  
Long Life ◽  
Elasticity Characteristics

The helicopter tail drive shafts are designed by using aluminum alloy conventionally. The composite materials have the advantages of high strength ratio, good fatigue and erosion resistance. It can reduce weight 10%~30% than metal, and improve the pneumatic elasticity characteristics and flight performances of helicopter. This cannot be realized by using other materials. The design of the tail driver shaft has used composite material, so the advantages of light weight, good dynamic performances, high reliability, long life, excellent survivability can be achieved, and critical speed are increased. Torsional vibration problem of helicopter is also solved.

The Application and Development of the High Speed Overrunning Clutch in the Transmission System of the Helicopter

2011 ◽  
Vol 86 ◽  
pp. 283-286
Author(s):  
Yan Ying Jiang ◽  
Zhen Rong Yang ◽  
Jie Gao
Keyword(s):  
Power System ◽  
High Speed ◽  
High Reliability ◽  
Transmission System ◽  
Rotor System ◽  
Light Weight ◽  
Design Characteristic ◽  
Long Life ◽  
Critical Components

The overrunning clutch is one of the critical components that can engage and disengage according to the movement requirement of the power system and the rotor system. The merits of the different overrunning clutch are analyzed by the design characteristic, reliability, weight, process of the manufacture and so on. In the end, the application and development of the high speed overrunning clutch are discussed according to the characteristics of the transmission system that have high reliability, long life and light weight.

The Design and Kinematics Analysis of an Underactuated Cable-Truss Mechanism

2014 ◽  
Vol 915-916 ◽  
pp. 256-263
Author(s):  
Nan Wu ◽  
Rong Qiang Liu ◽  
Hong Wei Guo
Keyword(s):  
Theoretical Analysis ◽  
Large Scale ◽  
Simple Structure ◽  
High Reliability ◽  
Light Weight ◽  
Motion Simulation ◽  
Kinematics Analysis ◽  
Precise Position ◽  
Underactuated Mechanism ◽  
Serial Mechanism

Although underactuated mechanism has been widely studied in recent years, little information is available on that with cable-truss. An underactuated cable-truss mechanism was presented in this paper. This serial mechanism consists of five quadrilateral cable-truss units and moves by changing the length of the cables. It can be extended to large-scale spatial gripper and has advantages like light weight, simple structure and high reliability. This mechanism can capture the object without its precise position and shape. The kinematics analysis was discussed considering the characteristics of different ways to capture and a numerical example was given. The results of motion simulation corresponding with the example were shown to verify the correctness of the theoretical analysis.

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