Integrated Equivalent Plate Based Aeroservoelastic Models for Strain Actuated Composite Lifting Surface/Control Surface Configurations

2009 ◽  
Author(s):  
Nima Ameri ◽  
Mark Lowenberg ◽  
Mike Friswell ◽  
Eli Livne
Keyword(s):  
Control Surface ◽  
Surface Control ◽  
Lifting Surface

Multivariable Active Lifting Surface Control Using Strain Actuation: Analytical and Experimental Results

1997 ◽  
Vol 34 (3) ◽  
pp. 313-321 ◽  
Author(s):  
Kenneth B. Lazarus ◽  
Edward F. Crawley ◽  
Charrissa Y. Lin
Keyword(s):  
Experimental Results ◽  
Surface Control ◽  
Lifting Surface

scholarly journals Control Issues of Digital Clay: Massive Hydraulic Actuator Array for Man-Machine Communication

2006 ◽  
Author(s):  
Haihong Zhu ◽  
Brittyn Paul ◽  
Wayne J. Book
Keyword(s):  
Control System ◽  
Control Surface ◽  
Control Algorithms ◽  
Hydraulic Actuator ◽  
Driving System ◽  
Surface Control ◽  
Specific Device ◽  
Funded Project ◽  
Machine Communication ◽  
And Control

Digital Clay is an NSF funded project for human machine communication through a tangible haptic surface actuated by fluid power. Digital Clay's hardware can be divided into three subsystems: massive actuator-sensor array, fluidic driving system, and control system. The main focus of this paper is on the control issues of the massive actuator array of Digital Clay. Categorized by the function of control algorithms, the control system can be further divided into three levels: cell control, surface control, and user application interface. Analysis and testing results of above introduced topics are provided based on a 5×5 actuator array prototype. Most of the topics discussed in this paper are widely applicable not just for this specific device.

Characterization of carbides in M50NiL

1991 ◽  
Vol 49 ◽  
pp. 606-607
Author(s):  
L. S. Lin ◽  
K. P. Gumz ◽  
A. V. Karg ◽  
C. C. Law
Keyword(s):  
Temperature Effects ◽  
Base Composition ◽  
Lattice Parameter ◽  
Control Surface ◽  
Carbide Formation ◽  
Particle Sizes ◽  
Low Carbon ◽  
Fee Structure ◽  
Heat Treated

Carbon and temperature effects on carbide formation in the carburized zone of M50NiL are of great importance because they can be used to control surface properties of bearings. A series of homogeneous alloys (with M50NiL as base composition) containing various levels of carbon in the range of 0.15% to 1.5% (in wt.%) and heat treated at temperatures between 650°C to 1100°C were selected for characterizations. Eleven samples were chosen for carbide characterization and chemical analysis and their identifications are listed in Table 1.Five different carbides consisting of M6C, M2C, M7C3 and M23C6 were found in all eleven samples examined as shown in Table 1. M6C carbides (with least carbon) were found to be the major carbide in low carbon alloys (<0.3% C) and their amounts decreased as the carbon content increased. In sample C (0.3% C), most particles (95%) encountered were M6C carbide with a particle sizes range between 0.05 to 0.25 um. The M6C carbide are enriched in both Mo and Fe and have a fee structure with lattice parameter a=1.105 nm (Figure 1).

Nonlinear response of airfoil section with control surface freeplay to gust loads

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 1543-1557 ◽  
Author(s):  
Deman Tang ◽  
Denis Kholodar ◽  
Earl H. Dowell
Keyword(s):  
Nonlinear Response ◽  
Control Surface ◽  
Airfoil Section ◽  
Gust Loads
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