A piezoelectric direct-drive servo valve with a novel multi-body contacting spool-driving mechanism: Design,modelling and experiment

Abstract

Stack-type piezoelectric actuators, which usually consist of several ceramic layers connected in series, are widely used in piezoelectric direct-drive servo valves (PDDSV). However, poor pulling force capacity of this kind of actuators affects the performances of the direct-drive servo valves. This article presents a new type of PDDSV, whose spool-driving mechanism is composed of a set of independent parts that are not fixed together but are in contact with each other. This multi-body contacting spool-driving mechanism provides bidirectional movement of the spool by a preloaded stack-type piezoelectric actuator and a driving disc spring. This prevents the stack-type piezoelectric actuator from bearing the pulling force due to the inertia and friction of the spool. Design of the proposed servo valve is illustrated in detail and its characteristics are also predicted. Based on a nonlinear dynamic model of the multi-body contacting spool-driving mechanism, a comprehensive dynamic simulation model of the proposed PDDSV is established. Static and dynamic characteristics of the proposed PDDSV have been studied experimentally and good agreements between experimental and simulation results are observed. The dynamic performances of the proposed PDDSV are compared with the existing piezoelectric servo valves, which demonstrate that the proposed PDDSV has satisfactory dynamic characteristics for high-frequency applications.

Keywords

Piezoelectric direct-drive servo valve stack-type piezoelectric actuator spool-driving mechanism hysteresis nonlinearity mathematical modelling experimental characteristics

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References

Karunanidhi

Singaperumal

. Design, analysis and simulation of magnetostrictive actuator and its application to high dynamic servo valve. Sensors Actuators A 2010; 157(2): 185–197.

Jiao

Chen

Hua

. Adaptive vibration active control of fluid pressure pulsations. Proc IMechE, Part I: J Systems Control Engineering 2003; 217(4): 311–318.

Ouyang P, Jiao Z, Liu H, et al. Active control on fluid borne pulsation using piezoelectric valve as absorber. In: 2006 IEEE conference on robotics, automation and mechatronics, Bangkok, Thailand, December 2006, pp.1–5.

Morgan JM and Milligan WW. A 1 kHz servohydraulic fatigue testing system. In: Proceedings of the conference on High cycle fatigue of structural materials, Warrendale, PA, 1997, pp. 305–312.

Anderson EH, Evert ME, Flannery P, et al. Image stabilization testbed (ISTAT). In: SPIE conference on technologies for synthetic environment: hardware-in-the-loop testing VI, Orlando, FL, 16 April 2001, paper no.4366-24.

Anderson EH, Bales GL and White EV. Application of smart material-hydraulic actuators. In: SPIE conference on Industrial and commercial applications of smart structure technologies, San Diego, CA, 2–6 March 2003, paper no. 5054-08.

Carter JM. New HWIL motion system developments. In: SPIE conference on technologies for synthetic environment: hardware-in-the -loop testing VI, Orlando, FL, 16 April 2001, paper no. 4366-22.

Karunanidhi

Singaperumal

. Mathematical modelling and experimental characterization of a high dynamic servo valve integrated with piezoelectric actuator. Proc IMechE Part I: J Systems Control Engineering 2010; 224(4): 419–435.

Uchino

Giniewicz

. Micromechatronics, New York, NY: Marcel Dekker, 2003.

10.

Katou Y. Servovalve. Patent S62-24004, Japan, 1987.

11.

Bang

Lee

Joo

. Two-stage electrohydraulic servovalve using stack-type piezoelectric elements. Proc IMechE, Part C: J Mechanical Engineering Science 2004; 218(1): 53–65.

12.

Lindler JE and Anderson EH. Piezoelectric direct drive servovalve. In: SPIE International conference on industrial and commercial applications of smart structures technologies, San Diego, CA, 17 March 2002, pp. 1–9.

13.

Sente

Labrique

Alexandre

. Efficient control of a piezoelectric linear actuator embedded into a servo-valve for aeronautic applications. IEEE Trans Indus Electron 2012; 59(4): 1971–1979.

14.

Le Letty R, Lhermet N, Patient G, et al. Valves based on amplified piezoelectric actuators. In: 8th International conference on new actuator, Bremen, German, 2002, pp. 141–144.

15.

Yokota

Hiramoto

. Ultra high-speed electro-hydraulic servo valve by making use of a multilayered piezoelectric device (PZT) (compensation of a hysteresis by introducing a software algorithm). Trans Jpn Soc Mech Eng Part B 1991; 57(533): 182–187.

16.

Meng

. Research on the piezoelectric direct drive servovalve. Piezo Acoustoopt 2007; 29(1): 47–49.

17.

Shen

Cheng

Yang

. New type piezoelectric direct drive servo valve. Chin J Mech Eng 2004; 40(9): 125–128.

18.

Mayer

Atzrodt

Herold

. An approach for the model based monitoring of piezoelectric actuators. Comput Struct 2008; 86(3): 314–321.

19.

Goldfarb

Celanovic

. A lumped parameter electromechanical model for describing the nonlinear behavior of piezoelectric actuators. J Dyn Syst Meas Control 1997; 119: 478–485.

20.

Arafa

Rizk

. Spool hydraulic stiffness and flow force effects in electrohydraulic servo-valves. Proc IMechE, Part C: J Mechanical Engineering Science 1987; 201(3): 193–199.

21.

Cheng

. Analysis of linear systems, Reading, MA: Addison-Wesley, 1959.

22.

Jouaneh

. Generalized Preisach model for hysteresis nonlinearity of piezoceramic actuators. Precis Eng 1997; 20(2): 99–111.

23.

Stepanenko Y and Su CY. Intelligent control of piezoelectric actuators. In: 37th IEEE conference on decision and control, Victoria University, BC, 16–18 December 1998, pp. 4234–4239.

24.

Schäfer

Janocha

. Compensation of hysteresis in solid-state actuators. Sensors Actuators A 1995; 49(1): 97–102.

25.

Adriaens

De Koning

Banning

. Modeling piezoelectric actuators. IEEE/ASME Trans Mechatron 2000; 5: 331–341.

26.

Physik Instrumente. PI Catalog V2: Piezo Drivers/Servo Controllers, 2009.

27.

Merritt

. Hydraulic control systems, New York, NY: Wiley, 1967.