scholarly journals Initially Clamped Piezoelectric Inchworm Linear Motor Design Based on Force Amplification Mechanisms for Miniaturized and Large Force Actuation Applications

Proceedings ◽  
2020 ◽  
Vol 64 (1) ◽  
pp. 12
Author(s):  
Hussam Kloub
Keyword(s):  
Dynamic Response ◽  
Mechanical System ◽  
Structural Design ◽  
Linear Motor ◽  
System Model ◽  
Model Based ◽  
Large Force ◽  
Motor Design ◽  
The Moment ◽  
Design Challenges

In this paper, a novel monolithic structural design of a piezoelectric (PZT) inchworm motor utilizing three force amplification mode (FAM) mechanisms is presented as an approach to overcome the design challenges of common PZT inchworm motors. A mechanical system model based on Simulink software was developed for a proposed inchworm motor design. The dynamic response of the motor was simulated at the moment of releasing the pre-stressed mechanism. The results showed a backlash response due to the mass acceleration of the mechanisms.

scholarly journals Force Amplification Mechanism for Increased Stroke and Speed Responses of Piezoelectric Stick-Slip Miniaturized Linear Motor

Proceedings ◽  
2020 ◽  
Vol 64 (1) ◽  
pp. 17
Author(s):  
Hussam Kloub
Keyword(s):  
Mechanical System ◽  
Linear Motor ◽  
System Model ◽  
Stick Slip ◽  
Mechanical Advantage ◽  
Output Displacement ◽  
Maximum Expansion ◽  
Preliminary Results ◽  
Mode Configuration ◽  
Amplification Mechanism

In this paper, a mechanical system model based on Simulink software was developed for a proposed design for a stick-slip motor. Only the orientation of a cubic PZT element identifies the mode configuration of the motor. The preliminary results showed that force amplification mode exhibited roughly five times more speed, at one-hundred times more loading force, compared to the displacement amplification mode. Interestingly, when the output displacement was compared to maximum expansion of mechanical advantage mechanism, then the force amplification mode showed displacement amplification.

scholarly journals Model-based administration of inhalation anaesthesia. 1. Developing a system model

2001 ◽  
Vol 86 (1) ◽  
pp. 12-28 ◽  
Author(s):  
J.G.C. Lerou ◽  
L.H.D.J. Booij
Keyword(s):  
System Model ◽  
Inhalation Anaesthesia ◽  
Model Based

A model-based approach to measuring denitrification and greenhouse gas production in lakes

2021 ◽  
Author(s):  
Juliet Falco Ajambo-Doherty
Keyword(s):  
Greenhouse Gas ◽  
Atmospheric Pressure ◽  
Schmidt Number ◽  
Spatial Scales ◽  
Gas Production ◽  
System Model ◽  
Biogeochemical Processes ◽  
Model Based ◽  
Temporal And Spatial ◽  
System Metabolism

An existing whole-system model based on changes in dissolved N₂ concentration was modified for lentic systems. Field validations carried out at Christie Lake in Dundas, ON and Turtle Pond in Stoney Creek, ON (Canada). New model inputs included air temperature, atmospheric pressure, relative humidity, wind velocity, and Schmidt number. Mont Carlo analysis was integrated into the model to better constrain error in model estimates of denitrification, whole-system metabolism, and greenhouse gas production. Denitrification rates ranged from -419-4415 µmol N.m-².h-¹ in Christie Lake and from 10-74 µmol N.m-².h-¹ in Turtle Pond. N₂O production ranged from 915-10,635 nmol N.m-².h-¹ in Christie Lake and from -344-131 nmol N.m-².h-¹ in Turtle Pond. The whole-system model allows for the examination of biogeochemical processes at ecologically significant temporal and spatial scales.

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