Method for optimizing total power consumption for LQG (linear quadratic Gaussian) control and communication

A technology of power and covariance, applied in power management, wireless communication, energy consumption reduction, etc., can solve problems such as energy waste and limited control performance, and achieve the effect of avoiding instability and optimizing total consumption

Inactive Publication Date: 2013-06-26
ZHEJIANG UNIV
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Problems solved by technology

Based on this, the usual way to design the amplification factor is to give the maximum communication power to seek the optimal control performance, but this will easily lead to wast

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  • Method for optimizing total power consumption for LQG (linear quadratic Gaussian) control and communication
  • Method for optimizing total power consumption for LQG (linear quadratic Gaussian) control and communication
  • Method for optimizing total power consumption for LQG (linear quadratic Gaussian) control and communication

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[0018] The invention aims at the control object of the guided vehicle in the automatic highway system, adopts a simple amplification transmission strategy to transmit signals, and the whole system structure is as figure 1 As shown, a method for optimizing the total consumption of LQG control and communication power is as follows:

[0019] Step 1: Model the movement process of the guided vehicle in the automatic highway system to obtain a state space model;

[0020] Refer to the method in S.S.Stankovic,M.J.Stanojevic,D.D.Siljak:Stochastic inclusion principle applied to decentralized overlapping suboptimal lqg control of a platoon of vehicles,The International Conference on Computer as a Tool,EUROCON,318–321 (2005) for modeling:

[0021] dx ( t ) = 0 1 0 - ζ x ( t ) dt + 0 ζ u ( t ) dt + dw ( t ) ,

[0022] Among them, t represents time, x(t)=[v L (t)a L (t)] T , V L (t) is the vehicle speed...

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Abstract

The invention discloses a method for optimizing the total power consumption for LQG (linear quadratic Gaussian) control and communication. The method aims to solve problems in the aspect of vehicle guiding control in an automatic road system. The method has the advantages that a simple amplification transmission strategy is adopted, the sum of power consumption for LQG control performance and power consumption for communication is minimized by the aid of the design for control signals and an offline design for amplification coefficients, and accordingly the total power consumption for LQG control and communication is optimized.

Description

technical field [0001] The invention belongs to the field of networked control systems and relates to a method for optimizing the total consumption of LQG control and communication power. Background technique [0002] In a networked control system, sensors, controllers, and actuators are often distributed everywhere and connected into a whole through a shared network. This makes the system structure flexible and reduces the cost of network construction and maintenance, so it has applications in many aspects, such as automatic highway systems. In the automatic road system, the sensor detects the vehicle's operation and the surrounding environment, and transmits it to the on-board computer. The computer controls the accelerator, steering and brake of the vehicle according to the information, so as to realize the automatic driving of the vehicle. Since information transmission adopts wireless communication technology, it will face multipath fading. [0003] Multipath fading i...

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Application Information

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IPC IPC(8): H04W24/02H04W52/02
CPCY02D30/70
Inventor 章辉田垠
Owner ZHEJIANG UNIV
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