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A design method for event-triggered control and wireless communication joint system

An event-triggered, wireless communication technology, applied in the transmission system, transmission monitoring, electrical components, etc., can solve the problems of limited power at the transmitting end, sufficient transmission power, and poor control performance, so as to reduce sampling and measurement, reduce The effect of resource overhead and complexity reduction

Active Publication Date: 2022-04-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical applications, the channel is not ideal, there are fading and noise, typically in the factory scene, there is deep fading, this kind of fading will lead to transmission failure, and the receiving end cannot obtain correct information
In addition, the transmitting end is power limited, that is, the maximum transmitting power cannot be sufficiently large as assumed in some literatures, but is limited
Therefore, the impact of communication will cause the receiving end to fail to obtain the latest status in time, which may lead to larger errors and poorer control performance

Method used

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  • A design method for event-triggered control and wireless communication joint system
  • A design method for event-triggered control and wireless communication joint system
  • A design method for event-triggered control and wireless communication joint system

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Embodiment

[0060] Set the system parameter matrices A and B of the equipment state update equation (1) to 0.9 and 0.5 respectively, assuming the noise term w k The distribution obeyed is: w k ~(0,1). Assuming an ideal channel, the trigger probability P when meeting the average error cost requirement tr = 0.4. The probability density of channel gain h is: m(h)=e -h . The probability that information is successfully transmitted from the scheduler to the controller is P f =0.9 (this is a relatively poor channel condition, if the probability is less than this value, measures such as increasing the transmit power should be considered to improve the channel). Then the trigger probability is corrected by Equation (12), and the trigger probability becomes P when considering communication factors t ' r = 0.444. Therefore, "P tr =0.444,P f = 0.9" curve is the joint design method of the present invention.

[0061] Adopt the method of the present invention to solve the problem, can obtain...

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Abstract

The invention belongs to the intersecting technical field of wireless communication and wireless control, and in particular relates to a design method of an event-triggered control and wireless communication combined system. The present invention proposes a self-triggering event-triggering scheme, which can predict the next triggering time based on current known information, thereby eliminating the need to frequently measure and sample the state of the device. Compared with traditional time-triggered control and event-triggered control , the solution proposed by the present invention greatly reduces energy consumption and has good communication performance. In particular, the present invention considers the real situation in the wireless communication process, and proposes a method for joint design of wireless communication and wireless control, thereby obtaining better communication performance and control performance, which makes the present invention more practical , More practical.

Description

technical field [0001] The invention belongs to the intersecting technical field of wireless communication and wireless control, and in particular relates to a design method of an event-triggered control and wireless communication combined system. Background technique [0002] In recent years, event-triggered control has been proposed to replace the traditional time-triggered control scheme to reduce the burden of communication, energy consumption and cost. Although the traditional time-triggered control system is simple in design and convenient in sampling, frequent and unnecessary sampling will cause energy waste, which is extremely unfavorable for the battery-driven sensors that are usually used in wireless control systems, and will greatly reduce the sensor’s performance. service life. Therefore, in order to reduce the load of communication transmission, reduce energy consumption, and save resources, event-triggered control schemes have received more and more attention....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/336H04B17/373H04B17/382H04B17/391
CPCH04B17/336H04B17/373H04B17/3911H04B17/382
Inventor 唐威常博童鑫陈智
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA