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This paper proposes a computer mouse-like device that is controlled by eye movements and voluntary winks using single channel of EOG. The position pair electrode, time-domain signal analysis are also presented.

Satellite attitude control is carried out to reach the target as well overcome various disturbances that cause satellite's orientation or be kept off attitude. The satellite efforts are provided by actuators, and reaction wheel one of them. basic step designing a understanding its dynamics. This paper reports axisymmetric behavior through simulation in MATLAB/Simulink. Some scenarios using simulations explore relationship between motion initial rotation without with wheel. run illustrate...

Spacecraft formation flying control using consensus algorithm means each spacecraft or satellite in a team updates its state based on the information states of local neighbours such way that final agent converges to common value. This paper discusses within scope rotational motions i.e. attitude alignment. Two alignment controllers proposed here.Simulations run as preliminary proof concept are presented. Simulations indicate laws might solve problem is achieved.

A feedback control system involving a linear Sliding Mode Controller (SMC) and an input saturated plant is considered here. The SMC designed for without saturation on its input. resulting will not necessarily show intended performance if the to saturated. In addition, directionality problem multivariable systems may occur during saturation. As result, transient response could be degraded signals stabilizing anymore. this case, compensator overcome while optimizing performance. static...

Chirp waveform is essential to a radar system with pulse compression technique. Various Nonlinear Frequency Modulation (NLFM) chirp waveforms have been proposed suppress sidelobes that are relatively high in the Linear (LFM) waveform. One type of them Piecewise NLFM (PWL-NLFM) can be viewed as concatenation several LFM stages different rate. The challenge using this figuring out rate for each stage. In paper, rule determining stage value Tri-Stages PWL-NLFM (TS-PWL-NLFM), particular...

This paper presents a sliding mode controller design of linear continuous systems with the guaranteed asymptotic stability. is done via two-steps matrix inequalities (LMI) approach. A degree conservativeness employed to facilitate forms all parameters in LMI formulation. Simulation examples are then given show effectiveness approach both regulator and constant input tracking systems.

Transfer of technology activity through reverse engineering is an effort done by developing country in order to decrease gap, including satellite technology, from developed country. To perform measurement anddata acquisition extract design information a component are the first step process. This paper reports result research on development data software for actuator called reaction wheel speed. In phase, speed system also possible be utilized as testing tool componente level verification....

Nonlinearity of dynamics and kinematics, difficulty in stability guarantee unwinding phenomenon problem make quaternion-based attitude control system design is a non trivial problem. The triviality increase the consensus rigid bodies group. This paper provides distributed controller that depends on information-state for among group bodies. developed based continuous composing augmented dynamic. designed has global motion to rest maneuver properties. Simulation run verifies can be avoided.

This paper presents a simple and straightforward design of discrete-time fractional-order odd-harmonics repetitive controller (RC). Unlike general RC designs, the proposed method utilizes an internal model with half-period delay stabilizing fractional phase lead compensator. First, representing frequencies is constructed by using information reference's basis period preferred tracking bandwidth. Secondly, optimization problem synthesized from stability condition closed-loop system solved to...

In this article, a discrete-time design of higher-order repetitive sliding mode controller (HO-RSMC) for uncertain linear systems with time-varying periodic disturbances is presented. the design, control (HORC) employed to significantly suppress exogenous disturbance period variation. The HORC-based system offers slow transient response due multiple delays. Moreover, since stability easily affected by model uncertainties, an output-feedback (SMC) added overcome shortcomings HORC. Stability...

Battery energy storage systems have been broadly used in solar power systems. It plays some important roles Therefore, battery performance estimation becomes a critical task. Since long-term voltage data can estimate the battery's state-of-health and its degradation more precisely, acquisition system necessary to be developed order collect for further study. This research focuses on development of collecting room temperature humidity system. The collection is conducted through...

It is well known that single equilibrium orientation point in matrix rotation represented by two points quaternion. This fact would imply nonefficient control effort as problem guaranteeing stability of the paper presents a solution to design quaternion-based spacecraft attitude system whose saturation element its law such those problems are overcome. The proposed feature methodology consideration on boundedness even presence unknown external disturbance. same also used cooperative...

Rotation matrix parameterization using unit quaternion can represent attitude globally. However, it is not unique and may generates the unwinding phenomenon, besides issue on globally asymptotically stability guarantee. This paper proposes a piecewise-continuous scheme of quaternion-based control law that employs saturation element such would avoid phenomenon. also consensus based saturated show property phenomenon avoidance corresponding graph only need to have directed spanning tree.

Limitations of size and mass obstruct small satellites to have energy storage generation freely. However, any satellite that brings SAR (synthetic aperture radar) payload requires much bigger compared to, for example, one an optical remote sensing mission. This paper addresses balance analysis microsatellite such the mission using is successfully run. A specific LEO orbit, attitude satellite, position solar panel are taken as a constraint in simulation obtain data used potential power...

This paper studies an attitude control system design based on modified Rodrigues parameters feedback. It employs a linear continuous sliding mode controller. The controller is able to bring the existence of motion asymptotically. Besides, equilibrium point proved have asymptotic stability guarantee through further analysis. analysis conducted since designed surface does not imply system's equilibrium. ends with some numerical examples that confirm effectiveness system.

A reaction wheel is a well-known actuator for controlling the attitude of spacecraft. It momentum exchange device that typically consists brushless direct current motor with flywheel attached to its shaft. As works, disturbance sourced from and impact can occur. This paper addresses linear observer-based control system employing on rotational platform called air-bearing. Simulations run show effectiveness proposed controller. Integral Squared Error, Absolute Time-weighted Error as well...

<p>This research is focused on the design and implementation of an electronic circuit for commuting a brushless direct current (BLDC) motor its data acquisition system, as well conducting experiments them. We propose drive using two modules, each consist dual H-bridge, that are cheap can be easily obtained. Two different commutation methods, namely six-step sine-wave commutations, applied. Each these implements way open-loop speed control, i.e., voltage-controlled-current-source...

Properties of SAR (Synthetic Aperture Radar) that able to penetrate the cloud and does not depend on sunlight are a number advantages when utilized for monitoring tropical region like IMC (Indonesian Maritime Continent). Moreover, since having areas along equatorial belt, is at shortcoming from perspective highly inclined LEO (Low Earth Orbit) satellite. It would result shorter infrequent pass times compared with near-equatorial satellite whose low inclination. This paper reports...

In the design of attitude control, rotational motion spacecraft is usually considered as a rotation rigid body. Rotation matrix parameterization using quaternion can represent globally body motions. However, representation not unique hence implies difficulties on stability guarantee. This paper presents asymptotically stable analysis continuous scheme quaternion-based control system that has saturation function. Simulations run show designed applicable for zero initial angular velocity case...

Ship dynamic positioning control system design is challenging due to its nonlinearity and environmental disturbance. An ideal (conventional) sliding mode utilizes a sign function make the trajectory reach surface in finite time but induces chattering effect. Instead, this paper presents mode-based ship that continuous function; therefore, effect can be avoided. The sliding-mode proposed has an asymptotic reaching as well convergence equilibrium point. It designed using equivalent concept....

State-of-charge (SOC) estimation is particularly important as it provides information about the remaining energy capacity of battery, allowing for better planning and utilization. Accurate SOC challenging because cannot be directly measured from battery. Instead, estimated by analyzing measurable variables such current voltage. To address this challenge, a discrete-time observer-based approach proposed in paper. This utilizes second-order equivalent circuit model piecewise linear...