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Related Concept Videos

Mechanical Efficiency of Real Machines01:14

Mechanical Efficiency of Real Machines

The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
Machines01:19

Machines

Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
Machines: Problem Solving I01:22

Machines: Problem Solving I

A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
Machines: Problem Solving II01:30

Machines: Problem Solving II

Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
Mechanical Systems01:22

Mechanical Systems

Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...
Electro-mechanical Systems01:19

Electro-mechanical Systems

Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...

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A Novel Single Animal Motor Function Tracking System Using Simple, Readily Available Software
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A Novel Single Animal Motor Function Tracking System Using Simple, Readily Available Software

Published on: August 31, 2018

Mission-oriented research for light machinery.

D Tesar

    Science (New York, N.Y.)
    |September 8, 1978
    PubMed
    Summary

    The U.S. lags in intelligent machine development, facing a significant trade deficit. A national research policy for light machinery and robotics is proposed to address this gap.

    Area of Science:

    • Robotics and intelligent machine development.
    • National research policy and technological competitiveness.

    Background:

    • The United States is not adequately pursuing the field of intelligent machines.
    • A substantial U.S. trade deficit of $9 billion in this market in 1977 highlights the issue.
    • International competitors like Japan, Germany, and Russia employ synergistic R&D approaches.

    Purpose of the Study:

    • To outline a specific solution for U.S. technological development in intelligent machines.
    • To propose a U.S. national research policy for light machinery and robotics.

    Main Methods:

    • Analysis of the U.S. trade deficit in intelligent machinery.
    • Examination of international collaborative research, development, and demonstration models.
    • Formulation of policy recommendations.

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    Application of a Dual Upper Limb Task-Oriented Robotic System for the Functional Recovery of the Upper Limb in Stroke Patients

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    Last Updated: Jun 22, 2026

    A Novel Single Animal Motor Function Tracking System Using Simple, Readily Available Software
    08:22

    A Novel Single Animal Motor Function Tracking System Using Simple, Readily Available Software

    Published on: August 31, 2018

    Application of Design Aspects in Uniaxial Loading Machine Development
    05:23

    Application of Design Aspects in Uniaxial Loading Machine Development

    Published on: September 19, 2018

    Application of a Dual Upper Limb Task-Oriented Robotic System for the Functional Recovery of the Upper Limb in Stroke Patients
    05:28

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    Main Results:

    • Identified a significant U.S. trade deficit in the intelligent machine market.
    • Observed successful synergistic R&D strategies in competitor nations.
    • Highlighted the need for a coordinated national approach.

    Conclusions:

    • The U.S. must adopt a proactive national research policy for light machinery and robotics.
    • A collaborative government, academic, and industrial strategy is crucial for regaining competitiveness.
    • Addressing the intelligent machine development gap is vital for U.S. markets.