张金权 1, 畅云峰 1, 牛元君 2, et al. Study on Self-Sensing Technique of Linear Refrigerator Compressor's Piston Displacement[J]. 2007, 41(9): 1049-1052+1065.DOI:
A mathematic model of a self-sensor was established by analyzing the moving-magnet linear motor of a linear refrigerator compressor
and measurement and control methods of piston displacement were achieved. For studying the performance of a self-sensor in the driving mode of variable-voltage control and variable time of flow control
a piston displacement measurement and control software based on LabVIEW(version 7.0)was designed
and the experimental study was carried out. The results show that using the linear motor as a self-sensor is effective. Its steady-state error is smaller than 4.4% in variable-voltage control and 7.3% in variable time of flow control in the range of piston stroke
and its maximum steady-state error is 1% in variable-voltage control and 3% in variable time of flow control near the top clearance distance. The self-sensor can be applied in the linear refrigerator compressor satisfactorily.
关键词
Keywords
references
Sunpower. Method and apparatus for measuring piston position in a free piston compressor: USA, 5342176 [P].1994-08-30.
Hanson B M, Levesley M.Self-sensing application for electromagnetic actuators [J].Sensors and Actuators, 2004, 116:345-351.
Redlich R, Unger R Z, van der Walt N R. Linear compressor: motor configuration, modulation and system [C]∥13th International Compressor Engineering Conference. Purdue, USA: School of Mechanical Engineering, Purdue Univ., 1996, 68-74.
Park K, Hong E, Lee H. Linear motor for linear compressor [C]∥16th International Compressor Engineering Conference. Purdue, USA:School of Mechanical Engineering, Purdue Univ., 2002, 31-38.