Foot Pedal Forces for Seated Operators

Area of Science:

• Ergonomics
• Human Factors Engineering
• Industrial Design

Background:

• Spot welding machines rely on foot controls for operation.
• Operator strength and biomechanics are critical for effective and safe use of foot pedals.
• Existing foot control designs may not accommodate the range of operator strengths.

Purpose of the Study:

• To conduct an orgonomic evaluation of spot welding machine foot controls.
• To determine the maximum isometric force exerted by seated male and female operators on a horizontal foot pedal.
• To provide redesign recommendations for improved foot control ergonomics.

Main Methods:

• Recruited ten male and ten female subjects for testing.
• Measured maximum isometric force exerted by seated operators on a horizontal foot pedal.
• Analyzed strength differences between legs and sexes based on pedal position.

Main Results:

• No significant difference in maximum isometric force was found between the right and left legs.
• Male leg strengths were 9% to 50% greater than female leg strengths.
• Operator strength varied depending on the foot pedal's position.

Conclusions:

• Foot control design should consider sex-based strength differences for optimal ergonomics.
• Redesign of spot welding foot controls is recommended to enhance operator performance and safety.
• Further research into biomechanical factors influencing foot pedal operation is warranted.