In battery-electric vehicles, an accurate knowledge of the current state charge (SOC) battery is crucial for safe and efficient operation. Offset-free SOC estimation Lithium-ion batteries (LIB) during operation still a challenging problem, due to uncertain output nonlinearity present in models. management systems employed such age- cycle-dependent relationship between open circuit voltage (OCV) each cell can be kept track using lookup tables. Between scattered data points, linear...

This paper presents an innovative nonlinear model of a self-sensing soft actuator and switching extended Kalman filter, which is used as observer for health monitoring such virtual sensor. Hardware-in-the-loop simulations measurements justify the observation strategy. An adaptive position control structure based on discrete wavelet packets transform method proposed. Stimulus-responsive polymers are relevant realization smart systems (capable both sensing actuating) in context actuators,...

Due to the worldwide outbreak of COVID-19, many strategies and models have been put forward by researchers who intend control current situation with given means. In particular, compartmental are being used model analyze COVID-19 dynamics different considered populations as Susceptible, Exposed, Infected Recovered compartments (SEIR). This study derives control-oriented pandemic, together constructive laws based on Lyapunov theory. The paper presents derivation new vaccination quarantining...

In this article, the design of an observer realized as extended Kalman filter (EKF) is presented for a nonlinear thermoelectric system, characterized by Peltier cell (PC). The task to estimate temperatures cold and warm side PCs, e.g., control purposes. particular, cold-side temperature be monitored in cooling system that used clamp workpieces freezing water novel industrial manufacturing process. estimation these done during milling phase which mill generates abrupt change controlled....

Camless internal combustion engines offer significant improvements over classical ones with cam-driven valves: a better torque performance, an increased fuel economy as well reduced emissions and pumping losses. The paper presents nonlinear model for hydraulic engine valve, which is regulated by innovative piezo-hydraulic valve spool described linear model. Based on these models, control design proposed using combination of feedforward feedback control. For the positioning spool, decoupling...

Tracking control of permanent magnet linear motors is a demanding task due to nonlinear dependency the drive force on currents. In order simplify cascaded design proposed in this paper, input nonlinearity eliminated first. The inner achieves high bandwidth outer loop, sliding mode combined with disturbance observer, which leads reduction chattering effect by reducing switching height. controller contributes robustness overall structure and addresses any kind inaccessible external internal...

Especially in the introductory phase of engineering studies, electrical courses usually reveal a large heterogeneity previous knowledge technical aspects students related to practical that are required for successful participation labs. During this fundamental orientation study program, it is crucial "get your hands dirty" gain not only abstract, but concrete elementary concepts like circuitry and linear supplies.

In this contribution, a gain adaptation for sliding mode control (SMC) is proposed that uses both linear model predictive (LMPC) and an estimator-based disturbance compensation. Its application demonstrated with electromagnetic actuator. The SMC based on second-order of the electric actuator, direct current (DC) drive, where dynamics motor angular velocity are addressed. error stabilized by moving horizon MPC Kalman filter (KF) estimates lumped variable. under consideration, variable...

This Innovative Practice Full Paper presents a constructivist concept for engineering education non-technical students. Global challenges and transformation processes lead to rapid increase in problems at the boundary between technical disciplines higher education. Furthermore, new fields of work emerge due digital transformation. Graduates need be prepared identify describe develop appropriate solutions teams order contribute change related future smart world. Engineering sciences have take...

This paper presents an optimal, robust, adaptive tuning strategy based on a linear model predictive control (LMPC) scheme for the switching gain of sliding mode (SMC). The LMPC employs moving horizon, where dynamics sliding-mode-controlled system is addressed. design presented exemplary DC drive which subject to both nonlinear friction as well uncertainty. overall has cascade structure. In inner loop currents, flatness-based used. outer involves integral angular velocity that combined with...

In this contribution, a cascaded control strategy is presented for permanent magnet synchronous motor (PMSM) that compensates model nonlinearities and enables an accurate as well robust trajectory tracking. The proposed comprises the combination of inversion-based current control, one two alternative second-order sliding mode approaches (SMC) extended Kalman filter (EKF). reference values controllers are calculated by Maximum Torque Per Ampere (MTPA) in outer loop. As SMC investigated:...

In this paper a model of hybrid actuator is proposed. It consists two mirrored piezo-mechanical structures (each including hydraulic transmission ratio) and aggregate. A cascade control strategy based on Model Predictive Control (MPC) proposed to track periodic valve trajectory signals. The duality the concept maintain invariant summation piezo input voltage suitable value. structure an internal external MPC controller. secondary, controller needed accomplish Soft Landing. MPCs combined with...

In this paper an Extended Kalman Filter (EKF) is used as observer for temperature monitoring, like a virtual sensor, of metal-polymer fibre based heater structure. Metal-coated polymers are relevant the realisation smart systems (capable both sensing and actuating). A real-time implementation estimator important to guarantee gentle, fault-free operation reject disturbances. It can be control resulting without direct measurement or users' safety by reacting overheating. An estimation strategy...

In this work, a new control strategy for permanent magnet linear motor is conceived. Geometric methods and sliding mode are combined to reduce the effects of nonlinearities due interaction between coil currents achieve robust positioning. fact, presence induced voltage, cannot be cancelled without help other auxiliary intrinsically techniques. Indeed, controller which devised makes whole structure with respect any kind inaccessible external internal disturbance, such as voltages, loads,...

In this paper a modelling of hybrid actuator is proposed. The consists piezo mechanical structure and hydraulic ratio displacement. Particular attention paid to possible Feed-forward control strategy in combination with feedback track periodic signal. Simulations carried out the suitability approach.

In this paper a model of hybrid actuator is proposed. It consists piezo-mechanical structure (including hydraulic transmission ratio) and aggregate. Moreover, cascade control strategy based on Model Predictive Control (MPC) proposed to track periodic valve trajectory signals. The an internal external controller. secondary, controller needed accomplish Soft Landing. MPCs are combined with two feed forward actions, one for each part the model. Simulation results carried out suitability approach.

As the drive force depends in a nonlinear way on currents, tracking control of permanent magnetic actuators requires sophisticated approaches. In this contribution, cascaded strategy is proposed that cancels effect nonlinearity and allows for an accurate trajectory tracking. The involves combination inversion-based current control, second-order sliding mode (SMC), Kalman filter (KF) provides estimates state variables as well lumped disturbance from noisy measurements. estimator-based...

The paper deals with a heuristical approach to compensate friction hysteresis in an aggregate actuator which is proposed be applied camless engine system and consists of piezoelectric, mechanic hydraulic components. displacement amplifier shows conspicuous effect that appears dead time depends on the speed engine. In general, high speeds, reduced. compensation not model-based since real application must run within very short time. presented adaptive pre-action desired servo piston trajectory...