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Presenting a coordinated control algorithm that takes into account both electric stability control (ESC) and drive force assisted steering (DFAS) performance. It introduces the correction factor ki of the driving force when driving the power steering, which designed by fuzzy control the factor with the different vehicle attitude and conditions of the rules of change, and finally the basic control...
This paper presents novel of power system stabilizer in which intend to investigate and observe the oscillation due to disturbances then define power angle difference on South Sulawesi grid. The symmetrical three phase fault and single phase fault to ground have been implemented and results show that the 150 kV of South Sulawesi grid tend to reach the limit of transient stability and then subject...
Voltage phase control is a novel field-weakening scheme for PMSM which was reported as more stable in high speed region. This paper provides a current ripple reduce method and a frequency-compensation method. The current ripple reduce method deals with the problem that the voltage phase control has bigger current ripple compared to the tradition method. The frequency-compensation method decreases...
In this paper, a dual parallel connected brushless direct current (BLDC) motors drive system fed by a single inverter is presented and the control method for stable operation in electric vehicles (EVs) application is proposed. To obtain the stability of such a system, both motors should always be respect the synchronism even if they have different load torque. The proposed control method is based...
Flux-Weakening (F-W) based on feedback voltage regulation is commonly adopted in Interior Permanent Magnet Synchronous Motor (IPMSM) drive systems. Voltage vector magnitude is controlled in closed-loop by modifying the current reference space vector, following a reference value related to the inverter limitations. Stable and fast voltage control allows to operate with lower voltage margin, which leads...
Designing a control system for an induction motor (IM) is a generally twofold task: (1) controller synthesis and, (2) assessment of its stability. When using the full fifth order dq-frame model, with incomplete state information and unknown disturbances, the controller design and the proof of stability are not trivial tasks. In this paper, we propose a speed controller for the IM using a reduced-order...
This paper presents an alternative control strategy for 4 degree-of-freedom pose regulation of a quadrotor using the Active Disturbance Rejection approach. The proposed controller was designed using a kind of Lyapunov energy function to ensure asymptotic stability for regulation, in addition to the active disturbance rejection feature which is based in sliding mode extended state observer. This control...
A passivity-based controllers with integral actions is proposed to control the current loop of permanent magnet synchronous motor (PMSM). The Port-controlled Hamiltonian system with dissipation (PCHD) model of permanent magnet synchronous motor with voltage disturbance is established by introduction of the state error and the integral action. The Lyapunov function is constructed to analyze the stability...
In this paper the induction motor state estimator based on current MRAS-type concept with a modified speed adaptation algorithm is presented. Its stability in motoring and regenerating modes is analysed. The influence of motor parameter mismatch to the stability boundaries is presented. It is shown that one of the proposed modification methods of the adaptation algorithm makes the estimator stable...
This paper addresses a novel slip-ratio-based torque distribution strategy for electric vehicles (EVs) to avoid slippage when driving over a split friction surface. With the combination to an upper and middle controller, the desired driving force and yaw moment can be distributed to four driving wheels by utilizing the proposed lower controller. Stability analysis by using Lyapunov theorem is presented...
This paper presents an improved model predictive control (MPC) for permanent magnet synchronous motor (PMSM) drives. The proposed MPC is different from the conventional MPC in applying two voltage vectors in every control period. The duty ratio is firstly calculated using a simple but effective method with the consideration of the one-step delay. The cost function is then modified by incorporating...
To enhance the control precision of permanent magnet synchronous motor (PMSM) under parameter variations and load torque disturbances, a minimal reduced-order load torque observer (MRLTO) based discrete-time sliding mode control (DSMC) scheme is presented. First, a DSMC controller is presented on the basis of the second-order discrete-time PMSM dynamics model to enhance the speed tracking response...
In order to improve the speed-regulation performance of the permanent-magnet synchronous motor (PMSM) system under uncertainties and disturbances, an equivalent disturbance observer (EDO) based discrete-time integral sliding mode control (DISMC) scheme is proposed. To avoid the high-frequency noise caused by the differential terms of conventional sliding mode control (SMC), a discrete-time integral...
The paper concerns the development of a adaptive sliding mode control based on super twisting (ASTW) and can be applied to a Human-Driven Knee Joint Orthosis. Therefore, a model of the shank-orthosis system is given considering the human effort as an external torque acting on the system. The main objective of this paper is to bring together two approaches to reduce the phenomenon of chattering, adaptation...
The existence of new power injection at a system will effect system stability that existed before, so stability analyze was needed to know the system conditioning before and after power injection, and performance system after disturbance, by observe rotor angle, frequency, and voltage. The result of dynamic system show that power injection of Gen XY can supply 0,021 pu at bus 1, 0,001 at bus 2, 0,001...
C.L.E.O. (Cleaner of Lower Earth Orbit) is a space architecture concept that aims at removing debris, ranged between 1 to 10 cm and even larger in diameter. The module consists of two systems; the capturing mechanism and module stabilization. The oncoming debris will be identified using MWIR sensors. Due to the rotatory tendency of the debris, algorithms are used which will find the size, shape and...
Conventional electronic stability control (ESC) system uses differential braking to stabilize the yaw rate and side slip of the vehicle motion. While the roll stability is critically important, it is absent from the current ESC scheme. In this paper, an model predictive control (MPC) scheme is proposed that potentially can achieve both yaw stability and roll stability. The objective of the proposed...
An active disturbance rejection controller (ADRC) is designed and originally implemented on a real torsional plant. The torsional plant resembles the dynamics of a rotational system. Due to mass imbalance, centrifugal imbalance, and the non-coincidence between the principal and geometric axes of a rotating disc, the system parameters of this torsional plant are varying constantly. In addition, an...
Electronic Stability Control (ESC) and Traction Control System (TCS) have progressed considerably, but there is seldom research on integration between the two active safety control systems. This paper proposes an integrated stability control system which combines the two modules cooperatively in order to achieve optimal torque distribution for decentralized electric vehicles (EVs) and constraint the...
An inertial stability and tracking control method based on parameter identification is presented for the nonlinear driving missile launcher. Nonlinear driving structure of the missile launcher is analyzed, and the kinematic relationships and dynamical equations are described. Nonlinear driving part will be identified by the polynomials fitting function. Compared with the traditional inertial stability...
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