On development of stroke sensing cylinder for automatic excavator

Lee, M.C.; Lee, M.H.; Choi, Young-Kiu; Yang, Seungjoon; Yoon, Kangsuk

doi:10.1109/isie.1995.497023

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…Compared with the approaches mentioned above, magneticgrating-like stroke-sensing cylinder, which is also known as magnetic-grating-like hydraulic cylinder integrated displacement sensor, provides a more effective alternative. This sensing device is to use simple working elements that will minimize the size of EHA by minimizing the dimension of the cylinder [7]. With magnetic-grating-like stroke-sensing cylinder, a combination of cylinder and sensor can be designed to handle long working distance measurement as well as matching with the structure of EHA.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Magnetic-Grating-Like Stroke-Sensing Cylinder Based on Response Quality Evaluation Algorithm

Guo

Liu

et al. 2018

Journal of Sensors

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The measurement of hydraulic cylinder displacement has been addressed from different fields. The detection principle of magnetic grating is able to realize the high integration and accuracy. In this paper, a signal response quality evaluation algorithm for devising and optimizing a high-accuracy displacement measuring system is proposed. On the basic of signal response quality evaluation method, structure variables are optimized to enhance the working performance. By defining the parameters, an optimum structure cylinder prototype is made and tested to provide better estimates. Experimental results on working characteristic are presented to verify the effectiveness of the optimized structure. The efficiency of the proposed signal response quality evaluation function is therefore demonstrated through the working performance.

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Section: Introductionmentioning

confidence: 99%

Optimization of Magnetic-Grating-Like Stroke-Sensing Cylinder Based on Response Quality Evaluation Algorithm

Guo

Liu

et al. 2018

Journal of Sensors

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“…These sensor devices are saturated in moderate or higher magnetic fields unless sensitivities of sensor devices and the magnetic circuitry are carefully adjusted. To overcome these problems, Lee et al 2 have developed a hydraulic cylinder equipped with a stroke sensor based on hall sensors 34 of Ga-As type. It has become available at a low cost lately and been capable of being used under a wide range of temperature fluctuation from -55°C to 125°C.…”

Section: Introductionmentioning

confidence: 99%

Development of digital stroke sensing cylinder and its performance evaluation

Yang¹,

Lee²,

Lee³

et al. 1996

Robotica

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Automation of heavy construction machinery needs sensors that can detect each position under severe construction fields. Motivated by this need a hydraulic cylinder equipped with Hall sensors of Ga-As type has been developed. However, this sensor device has some problems associated with incorrect detection of positions owing to the existence of some magnetic slope and electric noises. To solve these problems, this paper proposes a digital stroke sensing cylinder enhanced by digital signal processing. An apparatus of two hydraulic systems coupled with each other is installed in an experimental setup to evaluate the performance of the developed digital stroke sensing cylinder. In order to control the position of a cylinder rod, a PWM method is used. Evaluation of the performance is carried out under artificial disturbances such as an impulse, addition of some magnetic slope, and additional noises.

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Measuring system for development of stroke-sensing cylinder for automatic excavator

Yang

Lee

et al. 1998

IEEE Trans. Ind. Electron.

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On development of stroke sensing cylinder for automatic excavator

Cited by 4 publications

References 4 publications

Optimization of Magnetic-Grating-Like Stroke-Sensing Cylinder Based on Response Quality Evaluation Algorithm

Optimization of Magnetic-Grating-Like Stroke-Sensing Cylinder Based on Response Quality Evaluation Algorithm

Development of digital stroke sensing cylinder and its performance evaluation

Measuring system for development of stroke-sensing cylinder for automatic excavator

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