Karl Johan Åström: key obituary facts
Is Karl Johan Åström dead? Yes. Karl Johan Åström died on November 12, 2026, at age 92.
Cause of death: Karl Johan Åström's cause of death has not been publicly confirmed.
What was Karl Johan Åström known for?
He was a Swedish control theorist.
More about Karl Johan Åström
Born: 5 August 1934.
Place of birth: Östersund.
Gender: male.
Occupation: electrical engineer.
Nationality: Sweden.
Education: Royal Institute of Technology.
Employer: Lund University, Royal Institute of Technology, Swedish National Defence Research Institute.
Awards: IEEE Medal of Honor, The KTH Great Prize, Rufus Oldenburger Medal, honorary doctorate from INP Grenoble, honorary doctor of Royal Institute of Technology.
Also known as: Karl-Johan Åström.
Karl Johan Åström, a Swedish control theorist, died November 12, 2026, aged 92.
Born in Östersund, he studied engineering physics at the Royal Institute of Technology in Stockholm, earning a master’s degree in 1957 and a doctorate in automatic control and mathematics in 1960. He taught at the institute from 1955 to 1960 while working on inertial guidance at the Swedish National Defence Research Institute, and later held positions at Lund University and the institute.
Åström’s research addressed control theory and engineering, computer control and adaptive control. In 1965, he described a general framework for Markov decision processes with incomplete information, work that ultimately led to the concept of the partially observable Markov decision process. His contributions to identification, stochastic and adaptive control, and their application in control engineering practice, were recognized with his election to the U.S. National Academy of Engineering in 1995. His honors included the IEEE Medal of Honor, the KTH Great Prize and the Rufus Oldenburger Medal; he also received honorary doctorates from INP Grenoble and the Royal Institute of Technology. He died in Lund.