Second order sliding modes are used to keep exactly a constraint of the second relative degree or just to avoid chattering, i.e. in the cases when the standard (first order) sliding mode implementation might be involved or impossible. Design of a number of new 2-sliding controllers is demonstrated by means of the proposed homogeneity-based approach. A recently developed robust exact differentia...

The motor control system of unmanned aerial vehicle (UAV) will be affected by the environment during its operation, which has certain nonlinear characteristics. sliding mode variable structure method is proposed in this paper. Through pre design parameters and modes, influence interference, parameter changes, temperature other factors on reduced, power factor, precision working efficiency are i...

In this paper, sliding mode tracking control and its chattering suppression method are investigated for flexible-joint robot manipulators with only state measurements of joint actuators. First, within the framework singular perturbation theory, objective system is decoupled into two typical aims a slow subsystem fast subsystem. Then, considering lumped uncertainties (including dynamics external...

This paper investigates the appointed-time attitude stabilization problem of a rigid spacecraft under disturbance and parametric uncertainty. A continuous sliding mode observer is presented to observe synthetical term. To circumvent singularity in terminal control, new nonsingular surface designed by employing concept switching control. Based on observation information deriving from proposed ob...

During the operation of valve-controlled cylinder position systems, there are some problems, such as uncertainty and time-varying system parameters, imprecise modeling, external interference. These problems will affect loading accuracy safety reliability electro-hydraulic servo system. This paper used a research object, mathematical model was established. Then, sliding mode variable structure c...

T2FSMC has succesfully overcome the chattering and robustness problems implementing on mobile inverted pendulum robot. The remaining drawback is the gain scale factor of controller determination of Fuzzy Type 2 that is still doing trial and error. Firefly Algorithm will be used in this paper to determine the best gain scale factor of controller of Fuzzy Type 2 automatically. Utilized as objecti...

controller with PID sliding function is developed. In this controller, the switching gain is tuned by a single-input radial-basis-function neural network on the reachable condition of sliding mode. Thus, the effect of chattering can be alleviated. Moreover, global sliding mode is realized by designing an exponential dynamic sliding function. Mathematical proof of the stability and convergence o...

The problem of angular velocity of rotor and voltage control in synchronous generator machines is considered. As a robust solution of this problem the block control technique with sliding mode is proposed. The physical implementations of the proposed control law for the real synchronous machines results in chattering due to the presence of exciter unmodelled dynamics. In order to reduce the cha...

Output feedback sliding mode control has received great research interests, due to it does not require full accessibility of states and increases the ability of practical implementation of sliding mode control. In this paper, a new approach of chattering-free OFSMC design is proposed by incorporating integral sign function control for general multi-input multi-output linear uncertain systems. C...

This paper shows the development of a Predictive Sliding Mode Controller (PSMC). The proposed controller blends the design of Sliding Mode Control (SMC) with Model Predictive Control (MPC). The combination of SMC and MPC improves the performance of these two control laws. The designed control strategy has stronger robustness and chattering reduction property to conquer within the system uncerta...