A Study on a Novel Quick Return Mechanism

Hsieh, Wen-Hsiang; Tsai, Chia-Heng

doi:10.1139/tcsme-2009-0033

Cited by 24 publications

(20 citation statements)

References 15 publications

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“…There exists a kind of mechanisms that has a linear movement at its end-effector, which are called slider-crank mechanisms [20]. This mechanisms are widely used for machine tools or molding machines [21] for cutting tasks. One of the most used slider-crank mechanism is the Whitworth mechanism [6], [21], [22] which is of our interest.…”

Section: Introductionmentioning

confidence: 99%

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Task Space Position Control of Slider-Crank Mechanisms Using Simple Tuning Techniques Without Linearization Methods

et al. 2020

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In this work, a position control in task space for slider-crank mechanisms is presented. In order to apply linear controllers it is required to linearize the mechanism dynamics at an equilibrium point. However, complete dynamic knowledge is needed and the linearization technique gives an oversimplified model that affects the control performance. In this work, it is proposed a novel method to design task space controllers without using the complete knowledge of the mechanism dynamics and linearization methods. From the extended dynamic model of parallel robots, it can be seen that the end-effector (slider) dynamics is expressed as a linear system that can be used directly for the control design instead of the complete mechanism linear dynamics. The approach requires a minimal knowledge of the mechanism dynamics and avoids linearization methods. To verify our approach, it is used pole placement and sliding mode controllers whose gains are tuned according to the slider dynamics. A linear sensor is mounted at the slider to measure its position and avoids considering noise and disturbances at links before the slider. Simulations and experiments are presented to validate our approach using two kinds of slider-crank mechanisms.

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Section: Introductionmentioning

confidence: 99%

“…This mechanisms are widely used for machine tools or molding machines [21] for cutting tasks. One of the most used slider-crank mechanism is the Whitworth mechanism [6], [21], [22] which is of our interest. Generally the Whitworth mechanism is controlled in joint space [23] such that the slider is controlled indirectly.…”

Section: Introductionmentioning

confidence: 99%

Task Space Position Control of Slider-Crank Mechanisms Using Simple Tuning Techniques Without Linearization Methods

et al. 2020

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“…This property yields a significant improvement in machining productivity. Currently, it is widely used in machine tools, for instance, shaping machines, power-driven saws, flow metering pumps, and other applications requiring a working stroke with intensive loading, and a return stroke with non-intensive loading (Hsieh et al, 2009, Dwivedi, 1984, Chang, 2007, Fung and Chen, 1997.…”

Section: Introductionmentioning

confidence: 99%

On the synthesis of a geared adjustable stroke mechanism

Parlaktaş

2018

JAMDSM

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This study presents novel analysis and synthesis methods for a certain type of geared adjustable stroke mechanism. The mechanism has significance in mechanical design, as it has been used in practice. However, to the best of our knowledge, any theory on its analysis or synthesis is not available in the literature. The problem is divided into four parts and each part is generalized. Novel synthesis procedures for possible largest stroke are developed. Design charts are prepared for maximum stroke configuration. Stroke variation is an important concern in mechanism design. By adopting the introduced method, the output stroke can simply be adjusted even during the operation. The output stroke of the mechanism can be decreased more than 50% with proper transmission, velocity and acceleration characteristics. Use of non-integer gear ratio is also investigated. That property leads a variable stroke mechanism inherently. The relationship between the gear ratio and the number of cycles needed to return to the initial stroke value is determined. As a result, all possible design methods are investigated and generalized for this mechanism. Therefore, significant flexibility is introduced for adapting this mechanism to various practical applications.

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“…In [5] "Mechatronic redesign'' of the slider-crank mechanism is carried out in order to perform a variety of motion patterns. A novel design for quick return mechanisms, where the new mechanism is composed by a generalized Oldham coupling and a slider-crank mechanism is proposed in [6]. In [7] the mathematical model of the motor-mechanism coupling system is developed.…”

Section: Introductionmentioning

confidence: 99%

Remote Control of the Mechatronic Redesigned Slider-Crank Mechanism in Service

Tomić¹,

Milošević²,

Tomić³

et al. 2017

FU Mech Eng

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Abstract. Slider-crank mechanisms are used in many machines where there is a need to transform rotary motion into translation, and vice versa. Implementation of the control into a mechanical assembly of the slider-crank mechanism offers a wide range of applications of such controlled mechanism in mechatronic systems. This paper shows an example of the remote control of the angular velocity of the crank in a mechatronicredesigned slider-crank mechanism in order to achieve the desired motion of the slider. The remote control is achieved over the Internet connection and the appropriate software which is executed in the user's internet browser. The aim of this paper is to present the applied control algorithm as well as to explain advantages of the possibility to remotely run a mechatronic redesigned slider-crank mechanism in service. This is done through an example of using a controlled slider-crank mechanism in a remote laboratory experiment.

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A Study on a Novel Quick Return Mechanism

Cited by 24 publications

References 15 publications

Task Space Position Control of Slider-Crank Mechanisms Using Simple Tuning Techniques Without Linearization Methods

Task Space Position Control of Slider-Crank Mechanisms Using Simple Tuning Techniques Without Linearization Methods

On the synthesis of a geared adjustable stroke mechanism

Remote Control of the Mechatronic Redesigned Slider-Crank Mechanism in Service

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