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An electromechanical actuator design is presented in this paper. DSP controller TMS320F240 from TI is introduced to the system, and high performance DC motor and gears are used. For working under water the actuator has seal structures between parts connected to each other. The test results confirm that the design scheme of DSP controller based electromechanical actuator is feasible and the seal structures...
Fuzzy sliding mode controller based on trending law for electric actuator is proposed in this paper. The sliding mode is used to enhance the robustness of the system, the trending law is used to improve the system dynamic characteristics of reaching the sliding surface, and the fuzzy tuning schemes are employed to reduce the chattering problem around the sliding surface. The integral sliding mode...
Rocket missile is an important weapon for saturation attack, which exist the problem of the precision. In order to improve the bad precision, the facility control is added. Jet element is the key actuating mechanism of the attitude control for rocket missile. The switch time of jet element is critical for control precision, in this paper the switch time is simulated and its effect on control precision...
Control of electric actuator using brushless DC motors for tactical missiles is introduced in this paper. The electric actuator is a key part of the flight control system. A new kind of PD controller is implemented which is different from the traditional ones. The proportion reacts immediately to the error. And the differentiation function works on the feedback of the system in order to predict the...
In order to reduce the useless power of the missile-loaded hydraulic actuator, a new scheme that a variable-speed pumping source (VPS) is equipped on the missile-loaded hydraulic actuator is proposed in this study. Simulations in time-domain, frequency-domain and useless power are performed for the proposed scheme, and the results demonstrate that the new scheme is feasible. On the one hand, the performance...
Slide mode variable structure control method is used for designing a digital controller of BLDC electric actuator in this paper. Firstly, the mathematic model of electric actuator is built according to the selected BLDC motor. Secondly, two slide mode algorithms, proportion switching algorithm and velocity trending law algorithm, are designed for the electric actuation system. Thirdly, we design a...
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