ZOH-based novel BTSH approximate implementation method

Abstract

The invention discloses a ZOH-based novel BTSH approximation implementation method. The approximation implementation process mainly comprises the construction problem of approximate implementation of a retainer and the effectiveness analysis of the retainer after approximate construction. 1), the construction problem of approximate realization of a retainer, and when BTSH is used as a signal reconstruction realization method, the construction function expression of BTSH is that the output value of BTSH is influenced by the value of a duty ratio f; the BTSH engineering is difficult to realize because the value change in the interval [kT, kT+fT) is continuous and unequal, and N step waves are generated by introducing a zero-order sampling holder (ZOH) in the interval to approximately output the BTSH; and according to the method, TSH can be well approximately realized through the proposed method, the problem that BTSH engineering is difficult to realize is solved, and meanwhile, the discrete time system obtained based on the approximate BTSH effect has the same property as that under the BTSH condition, especially in the aspect of ensuring the minimum phase characteristic capability of the discrete time system.

Description

technical field [0001] The invention belongs to the technical field of analyzing and researching the minimum phase characteristic of a discrete-time control system by using a sample-and-hold device, and in particular relates to an approximate realization method of a new BTSH based on ZOH. Background technique [0002] A system with non-minimum phase characteristics is called a non-minimum phase system. The non-minimum phase characteristics can be characterized by the stability of the zero point of the system. For example, if there is a zero point outside the unit circle in a discrete-time system, then the system has non-minimum phase characteristics. Non-minimum phase characteristics. The minimum phase system is a controlled object that is extremely difficult to control. With the rapid development of computer technology and DSP technology, digital controller technology has been widely used in the control systems of various industries such as national defense construction, tr...

AI Technical Summary

Problems solved by technology

However, in the process of engineering realization of BTSH, it is very difficult to realize it precisely by using electronic components. Although it is described in the literature that BTSH is simulated and realized by using an application-specific integrated circuit, this kind of realization is extremely complicated and not easy. Facilitate engineering application and promotion

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