THEORETICAL, NUMERICAL AND EXPERIMENTAL ANALYSIS OF A PLANAR WOBBLE MOTOR DRIVEN BY SHAPE MEMORY ALLOY (SMA) WIRES

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ABBASI MOHAMMAD; MODABBERIFAR MEHDI; MIRZAKHANI BAHMAN; PAYANDEH YOUSEF

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Journal: Modares Mechanical Engineering Year:2017 | Volume:17 | Issue:6 Page(s): 401-412

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Information Journal Paper

Title

THEORETICAL, NUMERICAL AND EXPERIMENTAL ANALYSIS OF A PLANAR WOBBLE MOTOR DRIVEN BY SHAPE MEMORY ALLOY (SMA) WIRES

Author(s)

ABBASI MOHAMMAD | MODABBERIFAR MEHDI | MIRZAKHANI BAHMAN | PAYANDEH YOUSEF | Issue Writer Certificate

Keywords

ROTARY MOTORQ1

WOBBLE MOTORQ1

ROTARY SHAPE MEMORY ALLOY (SMA) ACTUATORQ1

PLANAR COMPLIANT MECHANISMQ1

Abstract

Nowadays, WOBBLE MOTORs are widely used as actuators with high torque, generating rotary motion without the need for external gearbox. This study contains theoretical, numerical and experimental analysis of a planar WOBBLE MOTOR with compliant mechanism driven by shape memory alloy (SMA) wires. The cyclic expansion and contraction of SMA wires were converted to the plane curvilinear motion with circular path and then to the continuous unlimited rotary motion by means of a compliant mechanism and a gear system consisting an internal and an external gear. After gear system designing, based on achievable motion range by SMA wires length changes, the relation between output torque, geometrical properties of motor and stress in SMA wire were derived. Also, compliant mechanism parameters consisting of length, height, thickness and number of flexures were analyzed in order to mechanism stiffness calculating. Then the frequency analysis using finite element method was performed to investigate structural robustness and operational stability of designed mechanism. The designed motor was fabricated and its performance was evaluated. The experimental results demonstrate motor capability in generating unlimited continuous rotary motion and repeatable output torque. The Maximum output torque was measured as 29.9, 32.7 and 34.3N.mm for 1.6, 1.8 and 2V applied voltages respectively. This motor is appropriate for high torque and low speed applications with limited workspace.

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APA: Copy

ABBASI, MOHAMMAD, MODABBERIFAR, MEHDI, MIRZAKHANI, BAHMAN, & PAYANDEH, YOUSEF. (2017). THEORETICAL, NUMERICAL AND EXPERIMENTAL ANALYSIS OF A PLANAR WOBBLE MOTOR DRIVEN BY SHAPE MEMORY ALLOY (SMA) WIRES. MODARES MECHANICAL ENGINEERING, 17(6 ), 401-412. SID. https://sid.ir/paper/179252/en

Vancouver: Copy

ABBASI MOHAMMAD, MODABBERIFAR MEHDI, MIRZAKHANI BAHMAN, PAYANDEH YOUSEF. THEORETICAL, NUMERICAL AND EXPERIMENTAL ANALYSIS OF A PLANAR WOBBLE MOTOR DRIVEN BY SHAPE MEMORY ALLOY (SMA) WIRES. MODARES MECHANICAL ENGINEERING[Internet]. 2017;17(6 ):401-412. Available from: https://sid.ir/paper/179252/en

IEEE: Copy

MOHAMMAD ABBASI, MEHDI MODABBERIFAR, BAHMAN MIRZAKHANI, and YOUSEF PAYANDEH, “THEORETICAL, NUMERICAL AND EXPERIMENTAL ANALYSIS OF A PLANAR WOBBLE MOTOR DRIVEN BY SHAPE MEMORY ALLOY (SMA) WIRES,” MODARES MECHANICAL ENGINEERING, vol. 17, no. 6 , pp. 401–412, 2017, [Online]. Available: https://sid.ir/paper/179252/en

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