in this paper an adaptive pid controller for wind energy conversion systems (wecs) has been developed. theadaptation technique applied to this controller is based on reinforcement learning (rl) theory. nonlinearcharacteristics of wind variations as plant input, wind turbine structure and generator operational behaviordemand for high quality adaptive controller to ensure both robust stability an...

economists were interested in economic stabilization policies as early as the 1930’s but the formal applications of stability theory from the classical control theory to economic analysis appeared in the early 1950’s when a number of control engineers actively collaborated with economists on economic stability and feedback mechanisms. the theory of optimal control resulting from the contributio...

This paper studies the real-time implementation of output-feedback L1 adaptive controller over real-time networks. Event-triggering schedules the data transmission dependent upon errors exceeding certain threshold. Continuous-time and discrete-time L1 adaptive control algorithms are provided. We show that with the proposed event-triggering schemes the states and the input in the networked syste...

model predictive controller is widely used in industrial plants. uncertainty is one of the critical issues in real systems. in this paper, the direct adaptive simplified model predictive control (smpc) is proposed for unknown or time varying plants with uncertainties. by estimating the plant step response in each sample, the controller is designed and the controller coefficients are directly ca...

This paper designs an integrated estimator and L1 adaptive control scheme to address the two main challenges involved in the Managed Pressure Drilling (MPD) system: first, the bottomhole states are updated at a low rate, which can be viewed as unmeasured and thus need to be estimated in real time; and second, the drilling process is subject to uncertainties including unknown parameters (e.g., f...

In the design of six degrees freedom (6-DOF) flight simulation system, unmodeled dynamic, transient performance and steady-state system are generally concerned. Considering that model is highly nonlinear requires high response speed stability, this paper applies L1 adaptive controller to control platform. The has a low-pass filter in feedback loop avoid frequencies signals, required can be enha...

A new landing strategy is presented for manned electric vertical takeoff and (eVTOL) vehicles, using a roll maneuver to obtain trajectory in the horizontal plane. This rejects altitude surging process, which fatal drawback of conventional jumping strategy. The leads smoother transition from wing-borne mode thrust-borne mode, has higher energy efficiency, meaning better flight experience economi...

This paper considers application of L1 adaptive output feedback controller to a missile longitudinal autopilot design. The proposed adaptive controller has satisfactory performance in the presence of parametric uncertainties and time-varying disturbances. Simulations demonstrate the benefits of the control method and compare the results to Linear Quadratic Regulator (LQR) and Linear Quadratic G...