ABSTRACT This article demonstrated a fully printed CPW‐fed antenna based on silver‐nanoparticles for ISM that is flexible, wearable, and reversibly deformable. The proposed consists of nano‐silver ink, conducting material used as radiating patch ground planes the polyethylene terephthalate flexible substrate. was fabricated properties were investigated. simulated measured reflection coefficients are ∼−31 dB ∼−23 dB, respectively. Meanwhile, −10 bandwidth ∼530 MHz obtained VSWR ∼1.3....

Most satellite missions have extremely stringent requirements for attitude reliability. However, the Inertial Measurement Unit (IMU) in Attitude Determination System (ADS), is susceptible to performance degradation space environment and can lead mission failure. The proposed fault tolerance scheme includes two-layer detection with isolation two-layered recovery. An Adaptive Unscented Kalman Filter (AUKF), quaternion estimator (QUEST) algorithm, residual generator constitute first layer of...

This paper presents a new adaptive small chattering sliding mode control (SCSMC) scheme that uses reinforcement learning (RL) and time-delay estimation (TDE) for the motion of free-floating space robotic manipulators (FSRM) subject to model uncertainty external disturbance.The proposed can achieve effects improve tracking accuracy by using law switching gain RL-based robust term handle inputs.In SCSMC, complicated multiple-input-multiple-output (MIMO) uncertain system FSRM is transformed...

This article aims to solve multiple problems associated with attitude estimation; the complexity of Kalman filter (KF) calculations in and heading reference system (AHRS), interference sensitivity magnetic, angular rate, gravity (MARG) sensors, low accuracy factored quaternion algorithm (FQA). It presents a two-layer linear KF using MARG sensors obtain estimation quaternions. First, data from triaxial accelerometer magnetometer is processed by novel algorithm, which fuses estimator (QUEST)...

Together with the popularity of internet things (IoT), information security in IoT is becoming an urgent issue. In this paper, a cryptographic coprocessor designed to provide for sensor nodes. This design incorporates application-specific instruction set support popular cryptography algorithms like advanced encryption standard (AES) and elliptic curve (ECC). The tailored provides good flexibility, high energy efficiency low latency. Local data ram integrated into our reduce transfer between...

In this paper, a bi-level Delta-Sigma modulator-based MEMS gyroscope design is presented based on Model Predictive Control (MPC) approach. The MPC popular because of its capability handling hard constraints. work, we propose to combine the 1-bit nature modulator output with develop processing-based (OBMPC). This paper will focus affine relationship between feedback and in-loop controller, as can potentially remove multipliers from controller. doing so, computational requirement control...

A flexible machine learning accelerator with low power consumption is presented in this paper. Linear classifier, naïve Bayes (NB) classifier and support vector (SVM) three kernel functions (linear, polynomial radial basis function (RBF)) are realized design using the same architecture. modified coordinate rotation digital computer (CORDIC) unit expanded convergence range employed to calculate exponential functions. The supply voltage decreased help reduce consumption. Re-characterized...

In August 2015, SHA-3 Standard was published as the next generation of Secure Hashing Algorithm. Several optimized implementations on a 24-core processor with software and hardware co-design are proposed in this paper. For designs, 4-core mapping scheme shared-memory reduces delay time by exploring internal parallelism algorithm; 5 cores packet router improves flexibility; circuit fully explores higher energy efficiency. Hardware approaches: specific instructions novel latch-based...

This study presents the early-stage development status of novel magnetorquer focusing on its operational capabilities to be applied in space applications. The aim is show that new can provide enough torque a nano-scale satellite perform reorientation maneuver which generally considered beyond capacity due physical limitations. As actuation process differs from conventional eletromagnet-based torquers, we designed control input have strictly three states only detour complexity behind...

A low-cost SoC implementation of AES algorithm for bio-signals is proposed in this paper. In order to reduce signal delay, we propose three kinds structure, namely the classic architecture, architecture including a DMA and with wavelet transform module integrated. As result, modules integrated can obtain minimum data latency area. design, present simplified 5/3 lifting processor (LWP) compact hardware accelerator (AESACR) purpose reducing area SoC. SMIC 65nm CMOS process, optimal structure...

To evaluate the effectiveness of spatiotemporal image correlation with M-mode display (STIC-M) in monitoring fetal ventricular contractile function hydrops fetalis. 357 normal fetuses and 17 fetuses, divided into cardiogenic group (n = 5) anemia 12), were recruited study. Fractional shortening (FS) values both left ventricle (LV) right (RV) measured using STIC-M. The fetuses' data used to construct reference ranges LVFS RVFS for assessment fetuses. Normal was 26.8 ∼ 42.7% 24.9 40.2%....

Abstract Space robotic manipulator (SRM) should be always performed in the given workspace for safety concern. This requires system states such as rotation of each joint, attitude base, and their velocities to constrained boundaries. In this article, a new sliding mode control scheme based on fixed time disturbance observer is proposed realize coordinate motion SRM with full-state constraints. Firstly, tracking error velocity at novel manifold can converge equilibrium within without...

Abstract Space robotic manipulator (SRM) should be always performed in the given workspace for safety concern. This requires system states such as rotation of each joint, attitude base, and their velocities to constrained regions. In this article, a new sliding mode control scheme based on fixed time disturbance observer is proposed realize coordinate motion SRM with full-state constraints. Firstly, tracking error velocity at novel manifold can converge equilibrium within without violating...

To explore the value of evaluation diastolic function with color M-mode propagation velocity (Vp) in hydrops fetalis between a congenital heart defect group and fetal anemia group. 68 fetuses were recruited divided into (n = 31) cardiogenic 37). Color Vp right ventricular (RV) left (LV) was measured, compared those normal same weeks' gestation. Compared control group, RV LV significantly decreased each gestational age (P < 0.01), did not until 30 could reflect abnormalities function. The...

To establish the reference range of angle between ascending aorta and main pulmonary artery fetuses in second third trimester using spatiotemporal image correlation (STIC), to investigate value prenatal screening conotruncal defects (CTD). Volume images 311 normal 20 with congenital heart diseases were recruited study. An off-line analysis acquired volume datasets was carried out multiplanar mode. The measured by navigating pivot point rotating axes established. obtained within ranges....

To establish the reference ranges of spatial angles among cardiac chambers and great vessels measured by spatiotemporal image correlation (STIC) in second third trimester fetuses. Volume images 352 normal fetuses from 20 to 38 weeks gestation were recruited study. An off-line analysis acquired volume datasets was carried out with multiplanar mode. Parameters included between: (1) 4-chamber view left ventricular long axis view; (2) main pulmonary artery; (3) ductal arch aortic arch. The...

The capability of regulating the attitude and position spacecraft equipped with a robotic manipulator is crucial to achieve practically un-limited work space. This paper presents an innovative neural network based less chattering sliding mode control (NNLSMC) scheme in which Radius Basic Function (RBF) used approximate lump uncertainties. proposed new adaptive law for switching gain positively proportional absolute value variables during initial period, while adaption then switched be...