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Erika Cruz Keeps Whirlpool’s Machines Spinning



Few devices are as crucial to people’s everyday lives as their household appliances. Electrical engineer Erika Cruz says it’s her mission to make sure they operate smoothly.

Cruz helps design washing machines and dryers for Whirlpool, the multinational appliance manufacturer.

Erika Cruz


Employer:

Whirlpool

Occupation:

Associate electrical engineer

Education:

Bachelor’s degree in electronics engineering, Industrial University of Santander, in Bucaramanga, Colombia

As a member of the electromechanical components team at Whirlpool’s research and engineering center in Benton Harbor, Mich., she oversees the development of timers, lid locks, humidity sensors, and other components.

More engineering goes into the machines than is obvious. Because the appliances are sold around the world, she says, they must comply with different technical and safety standards and environmental conditions. And reliability is key.

“If the washer’s door lock gets stuck and your clothes are inside, your whole day is going to be a mess,” she says.

While appliances can be taken for granted, Cruz loves that her work contributes in its own small way to the quality of life of so many.

“I love knowing that every time I’m working on a new design, the lives of millions of people will be improved by using it,” she says.

From Industrial Design to Electrical Engineering

Cruz grew up in Bucaramanga, Colombia, where her father worked as an electrical engineer, designing control systems for poultry processing plants. Her childhood home was full of electronics, and Cruz says her father taught her about technology. He paid her to organize his resistors, for example, and asked her to create short videos for work presentations about items he was designing. He also took Cruz and her sister along with him to the processing plants.

“We would go and see how the big machines worked,” she says. “It was very impressive because of their complexity and impact. That’s how I got interested in technology.”

In 2010, Cruz enrolled in Colombia’s Industrial University of Santander, in Bucaramanga, to study industrial design. But she quickly became disenchanted with the course’s focus on designing objects like fancy tables and ergonomic chairs.

“I wanted to design huge machines like my father did,” she says.

A teacher suggested that she study mechanical engineering instead. But her father was concerned about discrimination she might face in that career.

“He told me it would be difficult to get a job in the industry because mechanical engineers work with heavy machinery, and they saw women as being fragile,” Cruz says.

Her father thought electrical engineers would be more receptive to women, so she switched fields.

“I am very glad I ended up studying electronics because you can apply it to so many different fields,” Cruz says. She received a bachelor’s degree in electronics engineering in 2019.

The Road to America

While at university, Cruz signed up for a program that allowed Colombian students to work summer jobs in the United States. She held a variety of summer positions in Galveston, Texas, from 2017 to 2019, including cashier, housekeeper, and hostess.

She met her future husband in 2018, an American working at the same amusement park as she did. When she returned the following summer, they started dating, and that September they married. Since she had already received her degree, he was eager for her to move to the states permanently, but she made the difficult decision to return to Colombia.

“With the language barrier and my lack of engineering experience, I knew if I stayed in the United States, I would have to continue working jobs like housekeeping forever,” she says. “So I told my husband he had to wait for me because I was going back home to get some engineering experience.”

“I love knowing that every time I’m working on a new design, the lives of millions of people will be improved by using it.”

Cruz applied for engineering jobs in neighboring Brazil, which had more opportunities than Colombia did. In 2021, she joined Whirlpool as an electrical engineer at its R&D site in Joinville, Brazil. There, she introduced into mass production sensors and actuators provided by new suppliers.

Meanwhile, she applied for a U.S. Green Card, which would allow her to work and live permanently in the country. She received it six months after starting her job. Cruz asked her manager about transferring to one of Whirlpool’s U.S. facilities, not expecting to have any luck. Her manager set up a phone call with the manager of the components team at the company’s Benton Harbor site to discuss the request. Cruz didn’t realize that the call was actually a job interview. She was offered a position there as an electrical engineer and moved to Michigan later that year.

Designing Appliances Is Complex

Designing a new washing machine or dryer is a complex process, Cruz says. First, feedback from customers about desirable features is used to develop a high-level design. Then the product design work is divided among small teams of engineers, each responsible for a given subsystem, including hardware, software, materials, and components.

Part of Cruz’s job is to test components from different suppliers to make sure they meet safety, reliability, and performance requirements. She also writes the documentation that explains to other engineers about the components’ function and design.

Cruz then helps select the groups of components to be used in a particular application—combining, say, three temperature sensors with two humidity sensors in an optimized location to create a system that finds the best time to stop the dryer.

Building a Supportive Environment

Cruz loves her job, but her father’s fears about her entering a male-dominated field weren’t unfounded. Discrimination was worse in Colombia, she says, where she regularly experienced inappropriate comments and behavior from university classmates and teachers.

Even in the United States, she points out, “As a female engineer, you have to actually show you are able to do your job, because occasionally at the beginning of a project men are not convinced.”

In both Brazil and Michigan, Cruz says, she’s been fortunate to often end up on teams with a majority of women, who created a supportive environment. That support was particularly important when she had her first child and struggled to balance work and home life.

“It’s easier to talk to women about these struggles,” she says. “They know how it feels because they have been through it too.”

Update Your Knowledge

Working in the consumer electronics industry is rewarding, Cruz says. She loves going into a store or visiting someone’s home and seeing the machines that she’s helped build in action.

A degree in electronics engineering is a must for the field, Cruz says, but she’s also a big advocate of developing project management and critical thinking skills. She is a certified associate in project management, granted by the Project Management Institute, and has been trained in using tools that facilitate critical thinking. She says the project management program taught her how to solve problems in a more systematic way and helped her stand out in interviews.

It’s also important to constantly update your knowledge, Cruz says, “because electronics is a discipline that doesn’t stand still. Keep learning. Electronics is a science that is constantly growing.”

Why Not Give Robots Foot-Eyes?



This article is part of our exclusive IEEE Journal Watch series in partnership with IEEE Xplore.

One of the (many) great things about robots is that they don’t have to be constrained by how their biological counterparts do things. If you have a particular problem your robot needs to solve, you can get creative with extra sensors: many quadrupeds have side cameras and butt cameras for obstacle avoidance, and humanoids sometimes have chest cameras and knee cameras to help with navigation along with wrist cameras for manipulation. But how far can you take this? I have no idea, but it seems like we haven’t gotten to the end of things yet because now there’s a quadruped with cameras on the bottom of its feet.


Sensorized feet is not a new idea; it’s pretty common for quadrupedal robots to have some kind of foot-mounted force sensor to detect ground contact. Putting an actual camera down there is fairly novel, though, because it’s not at all obvious how you’d go about doing it. And the way that roboticists from the Southern University of Science and Technology in Shenzhen went about doing it is, indeed, not at all obvious.

Go1’s snazzy feetsies have soles made of transparent acrylic, with slightly flexible plastic structure supporting a 60 millimeter gap up to each camera (640x480 at 120 frames per second) with a quartet of LEDs to provide illumination. While it’s complicated looking, at 120 grams, it doesn’t weigh all that much, and costs only about $50 per foot ($42 of which is the camera). The whole thing is sealed to keep out dirt and water.

So why bother with all of this (presumably somewhat fragile) complexity? As we ask quadruped robots to do more useful things in more challenging environments, having more information about what exactly they’re stepping on and how their feet are interacting with the ground is going to be super helpful. Robots that rely only on proprioceptive sensing (sensing self-movement) are great and all, but when you start trying to move over complex surfaces like sand, it can be really helpful to have vision that explicitly shows how your robot is interacting with the surface that it’s stepping on. Preliminary results showed that Foot Vision enabled the Go1 using it to perceive the flow of sand or soil around its foot as it takes a step, which can be used to estimate slippage, the bane of ground-contacting robots.

The researchers acknowledge that their hardware could use a bit of robustifying, and they also want to try adding some tread patterns around the circumference of the foot, since that plexiglass window is pretty slippery. The overall idea is to make Foot Vision as useful as the much more common gripper-integrated vision systems for robotic manipulation, helping legged robots make better decisions about how to get where they need to go.

Foot Vision: A Vision-Based Multi-Functional Sensorized Foot for Quadruped Robots, by Guowei Shi, Chen Yao, Xin Liu, Yuntian Zhao, Zheng Zhu, and Zhenzhong Jia from Southern University of Science and Technology in Shenzhen, is accepted to the July 2024 issue of IEEE Robotics and Automation Letters

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Video Friday: Multitasking



Video Friday is your weekly selection of awesome robotics videos, collected by your friends at IEEE Spectrum robotics. We also post a weekly calendar of upcoming robotics events for the next few months. Please send us your events for inclusion.

RoboCup 2024: 17–22 July 2024, EINDHOVEN, NETHERLANDS
ICSR 2024: 23–26 October 2024, ODENSE, DENMARK
Cybathlon 2024: 25–27 October 2024, ZURICH

Enjoy today’s videos!

Do you have trouble multitasking? Cyborgize yourself through muscle stimulation to automate repetitive physical tasks while you focus on something else.

[ SplitBody ]

By combining a 5,000 frame-per-second (FPS) event camera with a 20-FPS RGB camera, roboticists from the University of Zurich have developed a much more effective vision system that keeps autonomous cars from crashing into stuff, as described in the current issue of Nature.

[ Nature ]

Mitsubishi Electric has been awarded the GUINNESS WORLD RECORDS title for the fastest robot to solve a puzzle cube. The robot’s time of 0.305 second beat the previous record of 0.38 second, for which it received a GUINNESS WORLD RECORDS certificate on 21 May 2024.

[ Mitsubishi ]

Sony’s AIBO is celebrating its 25th anniversary, which seems like a long time, and it is. But back then, the original AIBO could check your email for you. Email! In 1999!

I miss Hotmail.

[ AIBO ]

SchniPoSa: schnitzel with french fries and a salad.

[ Dino Robotics ]

Cloth-folding is still a really hard problem for robots, but progress was made at ICRA!

[ ICRA Cloth Competition ]

Thanks, Francis!

MIT CSAIL researchers enhance robotic precision with sophisticated tactile sensors in the palm and agile fingers, setting the stage for improvements in human-robot interaction and prosthetic technology.

[ MIT ]

We present a novel adversarial attack method designed to identify failure cases in any type of locomotion controller, including state-of-the-art reinforcement-learning-based controllers. Our approach reveals the vulnerabilities of black-box neural network controllers, providing valuable insights that can be leveraged to enhance robustness through retraining.

[ Fan Shi ]

In this work, we investigate a novel integrated flexible OLED display technology used as a robotic skin-interface to improve robot-to-human communication in a real industrial setting at Volkswagen or a collaborative human-robot interaction task in motor assembly. The interface was implemented in a workcell and validated qualitatively with a small group of operators (n=9) and quantitatively with a large group (n=42). The validation results showed that using flexible OLED technology could improve the operators’ attitude toward the robot; increase their intention to use the robot; enhance their perceived enjoyment, social influence, and trust; and reduce their anxiety.

[ Paper ]

Thanks, Bram!

We introduce InflatableBots, shape-changing inflatable robots for large-scale encountered-type haptics in VR. Unlike traditional inflatable shape displays, which are immobile and limited in interaction areas, our approach combines mobile robots with fan-based inflatable structures. This enables safe, scalable, and deployable haptic interactions on a large scale.

[ InflatableBots ]

We present a bioinspired passive dynamic foot in which the claws are actuated solely by the impact energy. Our gripper simultaneously resolves the issue of smooth absorption of the impact energy and fast closure of the claws by linking the motion of an ankle linkage and the claws through soft tendons.

[ Paper ]

In this video, a 3-UPU exoskeleton robot for a wrist joint is designed and controlled to perform wrist extension, flexion, radial-deviation, and ulnar-deviation motions in stroke-affected patients. This is the first time a 3-UPU robot has been used effectively for any kind of task.

“UPU” stands for “universal-prismatic-universal” and refers to the actuators—the prismatic joints between two universal joints.

[ BAS ]

Thanks, Tony!

BRUCE Got Spot-ted at ICRA2024.

[ Westwood Robotics ]

Parachutes: maybe not as good of an idea for drones as you might think.

[ Wing ]

In this paper, we propose a system for the artist-directed authoring of stylized bipedal walking gaits, tailored for execution on robotic characters. To demonstrate the utility of our approach, we animate gaits for a custom, free-walking robotic character, and show, with two additional in-simulation examples, how our procedural animation technique generalizes to bipeds with different degrees of freedom, proportions, and mass distributions.

[ Disney Research ]

The European drone project Labyrinth aims to keep new and conventional air traffic separate, especially in busy airspaces such as those expected in urban areas. The project provides a new drone-traffic service and illustrates its potential to improve the safety and efficiency of civil land, air, and sea transport, as well as emergency and rescue operations.

[ DLR ]

This Carnegie Mellon University Robotics Institute seminar, by Kim Baraka at Vrije Universiteit Amsterdam, is on the topic “Why We Should Build Robot Apprentices and Why We Shouldn’t Do It Alone.”

For robots to be able to truly integrate human-populated, dynamic, and unpredictable environments, they will have to have strong adaptive capabilities. In this talk, I argue that these adaptive capabilities should leverage interaction with end users, who know how (they want) a robot to act in that environment. I will present an overview of my past and ongoing work on the topic of human-interactive robot learning, a growing interdisciplinary subfield that embraces rich, bidirectional interaction to shape robot learning. I will discuss contributions on the algorithmic, interface, and interaction design fronts, showcasing several collaborations with animal behaviorists/trainers, dancers, puppeteers, and medical practitioners.

[ CMU RI ]

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