Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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A Study on Response Improvement of a Proportional Solenoid Actuator

비례제어 솔레노이드 액추에이터의 응답성 향상 연구

  • Yun, So Nam (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery & Materials) ;
  • Ham, Young Bog (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery & Materials) ;
  • Park, Jung Ho (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery & Materials)
  • Received : 2016.07.26
  • Accepted : 2016.08.31
  • Published : 2016.09.01
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Abstract

This paper presents a control method for the performance improvement of a proportional solenoid actuator using a Pulse Width Modulation (PWM) signal. It is very difficult to obtain excellent response performance from a proportional solenoid actuator using a simple proportional controller with no PWM signal or dither because the mass and structure of a proportional solenoid actuator changes according to the application target, friction force in the proportional solenoid tube, operating force and displacement range. To solve the above problems, first, a controller with a PWM function for experimenting with attraction force characteristics was designed and manufactured. Secondly, an experimental setup for solenoid performance measurement with a force sensor and a displacement sensor was also manufactured. The attraction force characteristics according to the frequency and duty ratio variations of a PWM signal were tested and the relationships among the frequency, duty ratio, plunger mass and friction characteristics were analyzed. Finally, response characteristics improvements for proportional solenoid actuators are discussed.

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