Setup adjustment under unknown process parameters and fixed adjustment cost

The operational reliability of the space manipulator is closely related to the control method. However the existing control methods seldom consider the operational reliability from the system level. A method to construct the operational reliability system control model based on particle filter for the space manipulator is presented in this paper. Firstly, the definition of operational reliability and the degree of operational reliability are given and the state space equations of the control system are established as well. Secondly, based on the particle filter algorithm, a method to estimate the distribution of the end position error and calculate the degree of operational reliability with any form of noise distribution in real time is established. Furthermore, a performance model based on quality loss theory is built and a performance function is obtained to evaluate the quality of the control process. The adjustment value of the end position of the space manipulator can be calculated by using the performance function. Finally, a large number of simulation results show that the control method proposed in this paper can improve the task success rate effectively compared to the simulation results using traditional control methods and control methods based on Bayesian estimation.

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“…System. For the th control cycle of control link, the following performance function is established to evaluate the control strategy [30],…”

Section: Real Time Adjustment Strategy Of Control Variables For the Omentioning

confidence: 99%

Research on Construction Method of Operational Reliability Control Model for Space Manipulator Based on Particle Filter

Gao

Wang

Jia

et al. 2015

Mathematical Problems in Engineering

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“…And the resulting loss of accuracy is defined as regulation costs. According to [23], the performance function is expressed as follows:…”

Section: Performance Function Of Control Processmentioning

confidence: 99%

Research on Control Method Based on Real-Time Operational Reliability Evaluation for Space Manipulator

Wang

Gao

Jia

et al. 2014

Advances in Mechanical Engineering

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A control method based on real-time operational reliability evaluation for space manipulator is presented for improving the success rate of a manipulator during the execution of a task. In this paper, a method for quantitative analysis of operational reliability is given when manipulator is executing a specified task; then a control model which could control the quantitative operational reliability is built. First, the control process is described by using a state space equation. Second, process parameters are estimated in real time using Bayesian method. Third, the expression of the system's real-time operational reliability is deduced based on the state space equation and process parameters which are estimated using Bayesian method. Finally, a control variable regulation strategy which considers the cost of control is given based on the Theory of Statistical Process Control. It is shown via simulations that this method effectively improves the operational reliability of space manipulator control system.

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“…The work on deadband adjustment thus far summarized is based on knowing all process parameters. Deadband adjustment policies for the case of unknown process parameters have been studied by Lian and Del Castillo (2006). A non‐Bayesian alternative in the unknown parameter case has been proposed by Crowder and Eshleman (2001).…”

Section: Some Recent Work In Spamentioning

confidence: 99%

Statistical process adjustment: a brief retrospective, current status, and some opportunities for further work

Del Castillo

2006

Statistica Neerlandica

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Industrial statisticians frequently face problems in their practice where adjustment of a manufacturing process is necessary. In this paper, a view of the origins and recent work in the area of statistical process adjustment (SPA) is provided. A discussion of some topics open for further research is also given including new problems in semiconductor manufacturing process control. The goal of the paper is to help display the SPA field as a research area with its own identity and content, and promote further interest in its development and application in the industry.

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Setup adjustment under unknown process parameters and fixed adjustment cost

Cited by 19 publications

References 6 publications

Research on Construction Method of Operational Reliability Control Model for Space Manipulator Based on Particle Filter

Research on Construction Method of Operational Reliability Control Model for Space Manipulator Based on Particle Filter

Research on Control Method Based on Real-Time Operational Reliability Evaluation for Space Manipulator

Statistical process adjustment: a brief retrospective, current status, and some opportunities for further work

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