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The current techniques for cell cutting always use a diamond knife with an edge angle larger than 20°. The compression caused by the edge angle may destroy the sample. In this paper, a nano knife with a small edge angle 5° was fabricated from a commercial AFM cantilever by FIB etching. The mechanical character of the nano knife was calibrated by theoretical calculation, numerical simulation and nanorobotic...
High quality greenhouse control requires accurate modeling of the greenhouse as a thermal system along with all the influences affecting it. A decomposed model is the only way to tackle the complexity of such a system. A very important module of the decomposition is the heating system, due to its high impact on the overall financial cost of the greenhouse. This paper inspects the theoretical limits...
In this paper, we compare two our design methods for active mechanisms based on the motion analysis of given tasks. The common purpose of these methods is to achieve low degree-of-freedom (DOF) mechanisms. The mechanisms which are designed with two methods can reconstruct the approximated motions for the tasks that are defined by the motion trajectories of the end effectors. The difference of the...
Anti-windup saturation compensation schemes in two-link flexible arms are studied. The singular perturbation approach is used to decompose the nonlinear system into a rigid subsystem and a fast subsystem, which allows a composite control design for the original system. A neural network is designed to compensate the saturation nonlinear in rigid subsystem, and a robust controller is employed to attenuate...
A new vertical peristaltic micro-feed actuator using piezoelectric stack as actuating element was designed in this paper. The clamping and driving of the mover are integrated through the piezoelectric stack and the flexible hinge structure. The mover crawls on the two tracks set by the two stators. The structure was simulated using ANSYS software to certify its feasibility. The result shows that the...
This paper investigates the feedback stabilization problem for networked control systems (NCSs) with unknown disturbances, where sensors and actuators communicate with a remote controller over a multi-purpose network. A new control scheme, which relies on both information-theoretic and control-theoretic tools, is proposed to stabilize linear discrete-time plants. A sufficient condition for stabilization...
In this paper we will present a touch sensitive compact design that is used for the actuation of myo electric arm. This system was developed as an alternative to today's commonly used electromechanical prosthetic actuation systems. With this system the amputee has to just touch the switch and individual can do couple of activities. Also this switching system is capable of closing and opening of grip...
The design and experimental characterization of a novel electronic control unit for fly-by-wire aircraft actuators are presented. Thanks to a carefully-engineered compact volume, it is embedded in the actuator body, providing local closed-loop control. Various digital control laws can be implemented in the easily reconfigurable digital platform. After system modeling and tuning, a variable-gain controller...
Advances in media technologies brought 3-D TV home and 4-D movies to your neighbour. We present a framework for 4-D broadcasting to bring 4-D entertainment home based on MPEG-V standard. A complete framework for 4-D entertainment from authoring of sensory effects to environment description and commanding rendering devices for the sensory effects can supported by MPEG-V and couple of other standards...
This kind of control systems wherein the control loops are closed through a real time communication network can be called networked control systems. Networked control system is a new hot topic in the control engineering. The reduction of bandwidth necessitated by the communication network in a networked control system is a major concern. For this reason, a computation method of reducing the number...
We describe a system which simulates in realtime the auditory and haptic sensations of walking on different surfaces. The system is based on a pair of sandals enhanced with pressure sensors and actuators. The pressure sensors detect the interaction force during walking, and control several physically based synthesis algorithms, which drive both the auditory and haptic feedback. The different hardware...
A managed wireless mesh for infrastructure-level, stable regional mesh network has been studied. NerveNet, which we have been proposing, is a concept of future regional platform network that covers local regions and provides various context-aware services with the shared use of sensors and actuators. The managed wireless mesh developed for materializing NerveNet features auto-configuration of multiple,...
Wireless actuators are small scale devices that can receive/accept instructions and act on their environment. The IP Multimedia Subsystem (IMS) is a key component for 3G networks. It aims at seamless provisioning of multimedia services. Combining actuation capabilities with IMS capabilities will certainly enable novel value added services. This paper proposes an architecture for the integration of...
Herein, the concept of an ancillary service manager is developed for the provision of additional control reserve capacity. The aggregating entity clusters time-varying, aggregated battery capacity from plug-in hybrid electric vehicle (PHEV) fleets and power reserves from conventional generators. It is shown that providing additional control reserve capacity from time-varying sources such as PHEVs...
We aim to achieve the phase-shift device which is a key component of two-dimensional Fourier spectrometer using the MEMS mirror fabricated by the micro fabrication technology. This mirror maintains parallel movement to the reference plane toward the vertical direction with a high precision. Therefore, in this study, the vertical electrostatic comb-drive actuator and displacement capacitive sensors...
We present the performance of a piezo-actuated compliant micromirror made of single crystal silicon, which is assembled with a compliant displacement amplification mechanism made of copper. Both of those two parts are purely based on the elasticity and deformation of thin beams. The measurement results reveal that our optical device achieves the specified function as a linear optical scanner, and...
In this work we introduce an extremely thin single chamber adaptive fluidic membrane lens with an integrated piezoelectric bending actuator. The height of the system is 1.76 mm and the membrane diameter 10 mm. The lens consists of a ring shaped piezo bending actuator with an optical clear silicone membrane in the center. A refractive power range of 11.3 dpt is achieved at a piezo voltage between ±40...
A translatory MOEMS actuator with extraordinary large stroke-especially developed for fast optical path length modulation in miniaturized FTIR-spectrometers-is presented for the first time. A precise translational out-of-plane oscillation at 500 Hz with large stroke of up to 1 mm is realized by means of a new suspension design of the comparative large mirror plate with 19.6 mm2 aperture using four...
We have developed a novel fabrication process which integrates silicon MEMS actuators with silica optical components. Suspended silica optical waveguides are actuated by a silicon electrostatic comb drive actuator, with a maximum displacement of 8 μm at 35 V bias.
A new display technology has been developed that overcomes the losses in conventional liquid crystal displays (LCDs). At the heart of this new class of displays is a digital microshutter (DMS™) that eliminates the need for a polarizer that is required in LCDs. The DMS™ also has a response time of approximately 20 times faster than that of an LCD pixel, making it possible to produce a bright field...
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