In this paper, we investigate power flow in compliant mechanisms that are employed in dynamic app... more In this paper, we investigate power flow in compliant mechanisms that are employed in dynamic applications. More specifically, we identify various elements of the energy storage and transfer between the input, external load, and strain energy stored within the compliant transmission. The goal is to design compliant mechanisms for dynamic applications by exploiting the inherent energy storage capability of compliant mechanisms in the most effective manner. We present a detailed case study on a flapping mechanism, in which we compare the peak input power requirement in a rigid-body mechanism with attached springs versus a distributed compliant mechanism. Through this case study, we present two approaches: (1) generative-load exploitation and (2) reactance cancellation, to describe the role of stored elastic energy in reducing the peak input power requirement. We propose a compliant flapping mechanism and its evaluation using nonlinear transient analysis. The input power needed to driv...
Compliant mechanisms have been designed for various types of applications to transmit desired for... more Compliant mechanisms have been designed for various types of applications to transmit desired forces and motions. In this paper, we explore an application of compliant mechanisms for active vibration isolation systems. For this type of application, an actuator and a compliant mechanism are used to cancel undesired disturbance, resulting in attenuated output amplitude. An actuator provides external energy to the system while a compliant mechanism functions as a transmission controlling the amount of displacement transmitted from the actuator to the payload to be isolated. This paper illustrates, based on preliminary results of finite element analyses (FEA), that a compliant mechanism equipped with an actuator can be used as an active vibration isolator to effectively cancel a known sinusoidal displacement disturbance at low frequencies by using a feedforward disturbance compensation control. The nonlinear FEA shows that a sinusoidal displacement disturbance of 6.0 mm amplitude is red...
Compliant mechanisms have been designed for various types of applications to transmit desired for... more Compliant mechanisms have been designed for various types of applications to transmit desired forces and motions. In this paper, we explore an application of compliant mechanisms for active vibration isolation systems. For this type of application, an actuator and a compliant mechanism are used to cancel undesired disturbance, resulting in attenuated output amplitude. An actuator provides external energy to the system while a compliant mechanism functions as a transmission controlling the amount of displacement transmitted from the actuator to the payload to be isolated. This paper illustrates, based on preliminary results of finite element analyses (FEA), that a compliant mechanism equipped with an actuator can be used as an active vibration isolator to effectively cancel a known sinusoidal displacement disturbance at low frequencies by using a feedforward disturbance compensation control. The nonlinear FEA shows that a sinusoidal displacement disturbance of 6.0 mm amplitude is red...
In this paper, we investigate power flow in compliant mechanisms that are employed in dynamic app... more In this paper, we investigate power flow in compliant mechanisms that are employed in dynamic applications. More specifically, we identify various elements of the energy storage and transfer between the input, external load, and the strain energy stored within the compliant transmission. The goal is to design complaint mechanisms for dynamic applications by exploiting the inherent energy storage capability of compliant mechanisms in the most effective manner. We present a detailed case study on a flapping mechanism in which we compare the peak input power requirement in a rigid-body mechanism with attached springs versus a distributed compliant mechanism. Through this case study, we present two different approaches, (1) generativeload exploitation and (2) reactance cancellation, to describe the role of stored elastic energy in reducing the required input power. In contrast to a conventional mechanism with a spring, stress and strain in a compliant mechanism are more uniformly distri...
In this paper, we proposed a mechanical extraction method using a newly designed single-outlet pi... more In this paper, we proposed a mechanical extraction method using a newly designed single-outlet piston press for measuring oil content in oil palm mesocarp. The aim of this study was to evaluate the feasibility of the proposed method, which was expected to help facilitate and fulfill the development of other methods for assessing oil palm ripeness and, in some scenarios, to be directly used at oil palm trading sites. The six steps of the proposed method include sampling, drying, shredding, digesting, pressing, and interpreting. A prototype of a single-outlet piston press was constructed and integrated with other equipment to form a prototype of a measurement system. The effects of two factors, including bunch zone and sample form, were studied. Bunch zones were equatorial zone and apical zone, while sample forms were chopped mesocarp and capillaceous mesocarp. A full factorial design of experiments having four treatments was used in the study. For each treatment, we established a cal...
A steamless nut-separated palm oil mill has been developed based on small-scale community's r... more A steamless nut-separated palm oil mill has been developed based on small-scale community's requirements with the purpose to overcome constraints faced by a conventional palm oil mill. The current paper discusses challenges in the development and technology transfer of the steamless nut-separated palm oil mill, including communication about technology performance, uncategorised problems, and limited flow of financial information. To overcome these challenges, the proposed approach is to use OEE-based plant performance indices and its estimated corresponding financial performance indices to communicate about the technology performance. In this work, the calculation of OEE was derived based on data obtained from palm oil mills. In addition, the performance factor was sub-categorised into the reception and extraction factors to relate the plant performance to the mill capacity and oil extraction rate, which are common variables used in palm oil mills. Moreover, the quality factor w...
In this paper, we investigate power flow in compliant mechanisms that are employed in dynamic app... more In this paper, we investigate power flow in compliant mechanisms that are employed in dynamic applications. More specifically, we identify various elements of the energy storage and transfer between the input, external load, and strain energy stored within the compliant transmission. The goal is to design compliant mechanisms for dynamic applications by exploiting the inherent energy storage capability of compliant mechanisms in the most effective manner. We present a detailed case study on a flapping mechanism, in which we compare the peak input power requirement in a rigid-body mechanism with attached springs versus a distributed compliant mechanism. Through this case study, we present two approaches: (1) generative-load exploitation and (2) reactance cancellation, to describe the role of stored elastic energy in reducing the peak input power requirement. We propose a compliant flapping mechanism and its evaluation using nonlinear transient analysis. The input power needed to driv...
Compliant mechanisms have been designed for various types of applications to transmit desired for... more Compliant mechanisms have been designed for various types of applications to transmit desired forces and motions. In this paper, we explore an application of compliant mechanisms for active vibration isolation systems. For this type of application, an actuator and a compliant mechanism are used to cancel undesired disturbance, resulting in attenuated output amplitude. An actuator provides external energy to the system while a compliant mechanism functions as a transmission controlling the amount of displacement transmitted from the actuator to the payload to be isolated. This paper illustrates, based on preliminary results of finite element analyses (FEA), that a compliant mechanism equipped with an actuator can be used as an active vibration isolator to effectively cancel a known sinusoidal displacement disturbance at low frequencies by using a feedforward disturbance compensation control. The nonlinear FEA shows that a sinusoidal displacement disturbance of 6.0 mm amplitude is red...
Compliant mechanisms have been designed for various types of applications to transmit desired for... more Compliant mechanisms have been designed for various types of applications to transmit desired forces and motions. In this paper, we explore an application of compliant mechanisms for active vibration isolation systems. For this type of application, an actuator and a compliant mechanism are used to cancel undesired disturbance, resulting in attenuated output amplitude. An actuator provides external energy to the system while a compliant mechanism functions as a transmission controlling the amount of displacement transmitted from the actuator to the payload to be isolated. This paper illustrates, based on preliminary results of finite element analyses (FEA), that a compliant mechanism equipped with an actuator can be used as an active vibration isolator to effectively cancel a known sinusoidal displacement disturbance at low frequencies by using a feedforward disturbance compensation control. The nonlinear FEA shows that a sinusoidal displacement disturbance of 6.0 mm amplitude is red...
In this paper, we investigate power flow in compliant mechanisms that are employed in dynamic app... more In this paper, we investigate power flow in compliant mechanisms that are employed in dynamic applications. More specifically, we identify various elements of the energy storage and transfer between the input, external load, and the strain energy stored within the compliant transmission. The goal is to design complaint mechanisms for dynamic applications by exploiting the inherent energy storage capability of compliant mechanisms in the most effective manner. We present a detailed case study on a flapping mechanism in which we compare the peak input power requirement in a rigid-body mechanism with attached springs versus a distributed compliant mechanism. Through this case study, we present two different approaches, (1) generativeload exploitation and (2) reactance cancellation, to describe the role of stored elastic energy in reducing the required input power. In contrast to a conventional mechanism with a spring, stress and strain in a compliant mechanism are more uniformly distri...
In this paper, we proposed a mechanical extraction method using a newly designed single-outlet pi... more In this paper, we proposed a mechanical extraction method using a newly designed single-outlet piston press for measuring oil content in oil palm mesocarp. The aim of this study was to evaluate the feasibility of the proposed method, which was expected to help facilitate and fulfill the development of other methods for assessing oil palm ripeness and, in some scenarios, to be directly used at oil palm trading sites. The six steps of the proposed method include sampling, drying, shredding, digesting, pressing, and interpreting. A prototype of a single-outlet piston press was constructed and integrated with other equipment to form a prototype of a measurement system. The effects of two factors, including bunch zone and sample form, were studied. Bunch zones were equatorial zone and apical zone, while sample forms were chopped mesocarp and capillaceous mesocarp. A full factorial design of experiments having four treatments was used in the study. For each treatment, we established a cal...
A steamless nut-separated palm oil mill has been developed based on small-scale community's r... more A steamless nut-separated palm oil mill has been developed based on small-scale community's requirements with the purpose to overcome constraints faced by a conventional palm oil mill. The current paper discusses challenges in the development and technology transfer of the steamless nut-separated palm oil mill, including communication about technology performance, uncategorised problems, and limited flow of financial information. To overcome these challenges, the proposed approach is to use OEE-based plant performance indices and its estimated corresponding financial performance indices to communicate about the technology performance. In this work, the calculation of OEE was derived based on data obtained from palm oil mills. In addition, the performance factor was sub-categorised into the reception and extraction factors to relate the plant performance to the mill capacity and oil extraction rate, which are common variables used in palm oil mills. Moreover, the quality factor w...
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