Interview Nolan Tsuchiya- Mechanical

Summary

Dr. Nolan Tsuchiya describes two areas of his mechanical-engineering research: a newer, student-oriented cycling research program and his established work in control systems.

Cycling as an Engineering Research Platform

Tsuchiya is an avid cyclist and sees a bicycle as a compact vehicle with many engineering systems that can be studied in a lab. His department is developing a cycling research program that welcomes students from all majors. The goal is to help students get involved early and potentially build their experience into a senior project.

The research is intended to be independent and conducted by a third party, rather than affiliated with or funded by bicycle brands. Example projects include:

• Drivetrain efficiency: The team developed a drivetrain dynamometer to measure power lost through friction in a bicycle’s chain-drive system. It can compare conditions such as an old, rusty chain with a clean, lubricated one.
• Tire rolling resistance: The team studies energy lost as tires roll, including the extra effort required when tires are nearly flat.

These projects involve designing experimental setups and solving measurement and mechatronics problems, such as how to collect power-loss data. Although the program focuses on bicycles, its engineering questions can apply to other systems. For example, chain-drive research may also be relevant to motorcycles and other forms of transportation.

Control Systems, Adaptive Control, and Autonomy

Tsuchiya’s more established research area is control systems and dynamic systems. He explains that control systems are part of everyday life: a thermostat responds automatically to temperature, while an elevator uses sensors and control mechanisms to travel to a selected floor.

His work focuses on feedback control, in which systems use information about their current state to make adjustments. One area of interest is adaptive control, where the controller changes over time. This can be useful when the disturbances a system must handle have changing characteristics.

Tsuchiya uses human balance to illustrate control and disturbance. Standing upright resembles an inverted pendulum, which would fall without corrective action. The body’s biological feedback helps detect imbalance and respond—for example, by taking a step. An external push is a disturbance; a robust controller or system can better resist or recover from such disruptions.

His lab also studies autonomy using research platforms, including a roughly one-tenth-scale RC car equipped with sensors such as lidar, sonar, and infrared. The work includes autonomous vehicles and coordinated movement among multiple entities.

Related topics to explore include adaptive control, model predictive control, and receding-horizon control.

Speakers and Sources

• Dr. Nolan Tsuchiya — Mechanical-engineering professor discussing his research.
• Jessica Perez — Interviewer who asks questions and prompts examples.
• Quanser — Research-platform company mentioned by Tsuchiya as a provider of electronic and mechatronic systems. He says it is based in Canada.