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We present a method to calculate the effective center wavelength for heterodyne interferometry of optical frequency combs, and verify this method by numerical simulation and experiments.
In this paper, an adaptive output feedback control scheme is proposed for a class of nonlinear systems with possible actuator failures. The system not only involves unknown parameters but also takes nonlinear terms linear in the unmeasured states into account and is preceded by hysteretic actuators whose nonlinearities are characterized by the saturated Prandtl–Ishlinskii model. By developing a high‐gain...
We design an adaptive quantized control for a class of multivariable nonlinear systems. A backstepping controller is constructed based on a hysteretic quantizer. It is proved that by using the proposed method, all signals of the closed-loop system are bounded. A exact inequality is achieved which can be considered as a guideline for choosing the quantization parameter. By choosing suitable design...
In this paper, a global decentralized output feedback control is proposed for a class of interconnected nonlinear time delay systems with each subsystem involving not only the unknown parameters but also nonlinear terms linear in the unmeasured states, and being preceded with hysteresis described by the saturated PI model. By employing local modified high-gain observers, our proposed scheme can guarantee...
Cubic prisms are commonly used to present pose and position of instruments in aerospace fields. Theodolites are used to get horizontal and vertical angles of cubic prisms by collimating. To improve the efficiency of collimating, an automatic collimation method for autocollimator was proposed based on a vision guidance system. A camera was used to get pose parameters of the aimed cubic prism according...
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