38 results about "Barrier lyapunov function" patented technology

The invention discloses a three-order model-based integrated design method for strapdown guidance and control. The method includes the following steps: the first step is to establish a three-order guidance and control integrated design model; the second step is to clearly consider the strapdown The design task of the integrated guidance and control algorithm constrained by the field of view of the joint seeker; the third step is to construct the auxiliary system and design the first layer of expected virtual control quantity η d , and process it through an approximate saturation function to obtain the first layer of virtual control quantity η c ; The fourth step: use the Barrier Lyapunov function to design the virtual control quantity ω of the second layer zc ;The fifth step, design the actual rudder deflection angle command δ z ; The sixth step, combining the third to fifth steps, obtains the integrated guidance and control algorithm considering the constraints of the field of view; the seventh step, checks the performance of the integrated guidance and control algorithm. The method of the invention can realize the precise strike on the target and ensure that the constraints of the field of view of the strapdown seeker are satisfied.

The invention discloses a limited state-based permanent magnet synchronous motor fuzzy position tracking control method. According to the method, the problems of non-linearity and iron loss existing in electric automobile motor driving and control systems are solved; the state quantity and the control quantity of the motor system are restrained on the basis of a Barrier Lyapunov function, meanwhile, and a fuzzy logic system is utilized to approach a nonlinear function in the system, and a fuzzy self-adaptive position tracking controller is constructed. According to the method disclosed by theinvention, the tracking error of the system can be ensured to be converged into a small enough neighborhood of the original point; and the simulation result shows that the state quantities of the motor are ensured to be in the constraint space of the system by virtue of the method of the invention, and the input of the controller is stable in a bounded region. According to the method, the rapid and effective response of the position tracking control of the permanent magnet synchronous motor of the electric vehicle is realized, and the method is more suitable for a control object requiring rapid dynamic response such as an electric automobile driving system.