A simple, compact, and rigid piezoelectric step motor with large step size
1Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
The Review of Scientific Instruments
|September 4, 2009
Summary
A new piezoelectric stepper motor offers compact, rigid, and versatile operation. Its design allows for potential use in low temperatures, making it suitable for diverse applications.
Area of Science:
- Engineering
- Materials Science
- Physics
Background:
- Piezoelectric actuators are widely used in precision motion control.
- Existing stepper motor designs often face limitations in size, rigidity, or operational range.
Purpose of the Study:
- To introduce a novel piezoelectric stepper motor with enhanced compactness, rigidity, and simplicity.
- To demonstrate its operability in any direction and potential for low-temperature applications.
Main Methods:
- The motor utilizes an axially cut piezoelectric scanner tube.
- A hollow shaft is clamped at both ends by the spring parts of the shaft.
- Differential driving voltages are applied to deform the piezotube halves, driving the shaft.
Main Results:
- The developed motor exhibits high compactness, rigidity, and simplicity.
- It demonstrates operability in any direction.
- The design suggests suitability for low-temperature environments due to loose operation conditions and large step size.
Conclusions:
- The novel piezoelectric stepper motor presents a significant advancement in compact and versatile motion control.
- Its unique design offers potential for operation in demanding environments, including low temperatures.
Related Concept Videos
00:46Motor Units
A motor unit consists of two main components: a single efferent motor neuron (i.e., a neuron that carries impulses away from the central nervous system) and all of the muscle fibers it innervates. The motor neuron may innervate multiple muscle fibers, which are single cells, but only one motor neuron innervates a single muscle fiber.
01:13Motor Units
The motor unit is a fundamental component of the neuromuscular system and plays a crucial role in coordinating muscle contractions. It consists of a somatic motor neuron, which connects and controls multiple skeletal muscle fibers, forming a single functional segment. The axon of the motor neuron branches out and establishes synaptic connections known as neuromuscular junctions with individual muscle fibers within the motor unit.
Motor units come in different sizes, with smaller units...
Motor units come in different sizes, with smaller units...
01:30Potentiometer
Voltage and current measurements using a standard voltmeter and ammeter alter the circuit being measured either by drawing or resisting the current flow, which introduces uncertainties in the measurements. Null measurements balance the voltages so that no current flows through the measuring device and, therefore, no alterations occur in the measured circuit.
Suppose the emf of a battery needs to be measured. If the battery is directly connected to a standard voltmeter, the measured quantity is...
Suppose the emf of a battery needs to be measured. If the battery is directly connected to a standard voltmeter, the measured quantity is...
01:24PI Controller: Design
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
01:20Motor Unit Stimulation
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...