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Point-based value iteration methods are a class of effective algorithms for solving POMDP model. Although MDP-based algorithms such as FSVI can reduce the complexity and improve efficiency greatly by using the optimal strategy of the underlying MDP, the excessive randomness of these algorithms makes them not suitable for the realistic POMDP problems. A probabilistic greedy search value iteration algorithm...
Traditional video synopsis methods model the processing into an optimization formula where relations among objects such as collision cost are utilized while entire re-calculation is introduced under each possible temporal shift. Unlike the pairwise cost optimization, we propose a low-complexity and efficient online synopsis method where each tube is processed independently. Without tubes' comparison,...
This paper analyzed the physical structure of the planar inverted pendulum system, established the nonlinear dynamic model of the system with Lagrange equation. The same linear model and state-space expression in each direction is obtained, by decoupling the nonlinear model around the system's equilibrium position. On the basis of the linear optimal control theory, designs LQR controller, which the...
The control algorithm affects the quality of the control system directly, even determines the success or failure of the whole system. When a control system can use a variety of control algorithms, but it is difficult to assess the merits according to precision indicator and time indicator, it needs a new evaluation indicator. This paper puts forward a control accuracy indicator to represent the situation...
This paper establishes the nonlinear model of the planar inverted pendulum system by using Lagrange equation, then decouples the model around the system's equilibrium position with Taylor series expansion, gets the same linear model in the direction of and. According to the linear optimal control theory, designs a LQR controller, its base cart positioning prior to the pendulum stabilization. Finally,...
In this paper, the simulation and design of a diode type magnetron injection gun (MIG) for a W-band CW gyrotron oscillator is presented. The simulation of the MIG, operating at the voltage of 55kV and the current of 4A, is finished with the help of a trajectory program EGUN. The simulation results indicate that the velocity ratio with velocity spread of less than 2.5% is 1.43.
Aim at performance downgrade of loitering detection in the case of motion target being motionless of short duration or multiple targets having crisscross motion, furthermore, loitering detection pays more attention to trajectory of motion target than itself, so this paper proposed a method of video loitering detection based on dynamic programming. First, we extract characteristic points from every...
The expansion methodology monotonically enlarges the estimated stability region of a general system so that the true stability boundary can be approached. It has advantages to reduce the conservativeness of the general system and to construct feasible algorithms for large-scale and complicated systems. Our paper provides fundamentals for the expansion theory of stability region estimation, locally...
Parameter uncertainty and measuring noise are still very challenging work in developing an appropriate controller for the automated clutch system due to the effect of the external disturbances. This paper introduces a robust control method for automated clutch system. A nonlinear dynamic model for the screw-nut actuator associated with clutch is derived, and then a dynamic sliding mode controller...
In some dynamic systems, it is desirable to keep the state trajectory within a predefined (constrained) subset of the state space, referred to as an operating region. However, for certain systems, state trajectories leave the operating region in finite time due to system dynamics. To keep the state trajectory in the operating region as long as possible, a constrained time optimal control problem can...
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