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Regen Braking Algo for Parallel Hydraulic Hybrid Vehicles with Fuzzy Q-Learning

2 points by westurner 3y ago

westurner 3y ago
"Regenerative Braking Algorithm for Parallel Hydraulic Hybrid Vehicles Based on Fuzzy Q-Learning" (2023) https://www.mdpi.com/1996-1073/16/4/1895 https://www.mdpi.com/1996-1073/16/4/1895 https://scholar.google.com/scholar?cites=16521728940598935707&as_sdt=5,43&sciodt=0,43&hl=en https://scholar.google.com/scholar?cites=1652172894059893570... : > Abstract: [...] By considering the impact of fuzzy controllers having better robustness, adaptability, and fault tolerance, a fuzzy control strategy is employed in this paper to accomplish the regenerative braking force distribution on the front axle. A regenerative braking model is created on the Simulink platform using the braking force distribution indicated above, and experiments are run under six specific operating conditions: New European Driving Cycle (NEDC), World Light-Duty Vehicle Test Cycle (WLTC), Federal Test Procedure 72 (FTP-72), Federal Test Procedure 75 (FTP-75), China Light-Duty Vehicle Test Cycle-Passenger (CLTC-P), and New York City Cycle (NYCC). The findings demonstrate that in six typical cycling road conditions, the energy saving efficiency of electric vehicles has greatly increased, reaching over 15%. The energy saving efficiency during the WLTC driving condition reaches 25%, and it rises to 30% under the FTP-72, FTP-75, and CLTC-P driving conditions. Furthermore, under the NYCC road conditions, the energy saving efficiency exceeded 40%. Therefore, our results verify the effectiveness of the regenerative braking control strategy proposed in this paper.
- westurner 3y ago
  FWIU e.g. delivery vans and garbage trucks stop and start all day, with multiple $2k/job brake pad repairs per year. Is there a garbage truck sim too? /? "hydraulic regenerative braking" system https://www.google.com/search?q=%22hydraulic+regenerative+braking%22+system https://www.google.com/search?q=%22hydraulic+regenerative+br... "Garbage Trucks Go Green" (2010) https://www.technologyreview.com/2010/08/03/201733/garbage-trucks-go-green/ https://www.technologyreview.com/2010/08/03/201733/garbage-t... : > A new kind of hybrid technology for heavy-duty vehicles uses hydraulics, rather than batteries, to store energy. Trucks using the system promise to be 30 percent more fuel-efficient than conventional vehicles. "Ann Arbor Saves with Hydraulic Hybrid Recycling Trucks" (2011) https://www.government-fleet.com/79387/ann-arbor-saves-with-hydraulic-hybrid-recycling-trucks https://www.government-fleet.com/79387/ann-arbor-saves-with-... : > This regeneration of braking energy improves fuel economy by 15 percent, saving the City almost 1,800 gallons of fuel each year. > The hydraulic regenerative braking system also led to savings in brake maintenance by increasing the life span of brakes. Normally, brakes are replaced several times per year, but in the year that Ann Arbor has been using the trucks, the brakes have not had to be replaced. This resulted in an annual savings of almost $12,000, [for four such 2010 vehicles] the Clean Energy Coalition stated. Marginal gross annual savings per recycling truck: (1800x + 12000y) / 4 = 450x + 3000y Potential savings given an even more efficient hydraulic regenerative braking system in a recycling truck scenario: x_before * (1-0.15) = 1800 x_before * (1-0.314) = x_314

2 points by westurner 3y ago

"Regenerative Braking Algorithm for Parallel Hydraulic Hybrid Vehicles Based on Fuzzy Q-Learning" (2023) https://www.mdpi.com/1996-1073/16/4/1895 https://www.mdpi.com/1996-1073/16/4/1895 https://scholar.google.com/scholar?cites=16521728940598935707&as_sdt=5,43&sciodt=0,43&hl=en https://scholar.google.com/scholar?cites=1652172894059893570... : > Abstract: [...] By considering the impact of fuzzy controllers having better robustness, adaptability, and fault tolerance, a fuzzy control strategy is employed in this paper to accomplish the regenerative braking force distribution on the front axle. A regenerative braking model is created on the Simulink platform using the braking force distribution indicated above, and experiments are run under six specific operating conditions: New European Driving Cycle (NEDC), World Light-Duty Vehicle Test Cycle (WLTC), Federal Test Procedure 72 (FTP-72), Federal Test Procedure 75 (FTP-75), China Light-Duty Vehicle Test Cycle-Passenger (CLTC-P), and New York City Cycle (NYCC). The findings demonstrate that in six typical cycling road conditions, the energy saving efficiency of electric vehicles has greatly increased, reaching over 15%. The energy saving efficiency during the WLTC driving condition reaches 25%, and it rises to 30% under the FTP-72, FTP-75, and CLTC-P driving conditions. Furthermore, under the NYCC road conditions, the energy saving efficiency exceeded 40%. Therefore, our results verify the effectiveness of the regenerative braking control strategy proposed in this paper.

westurner 3y ago
FWIU e.g. delivery vans and garbage trucks stop and start all day, with multiple $2k/job brake pad repairs per year. Is there a garbage truck sim too? /? "hydraulic regenerative braking" system https://www.google.com/search?q=%22hydraulic+regenerative+braking%22+system https://www.google.com/search?q=%22hydraulic+regenerative+br... "Garbage Trucks Go Green" (2010) https://www.technologyreview.com/2010/08/03/201733/garbage-trucks-go-green/ https://www.technologyreview.com/2010/08/03/201733/garbage-t... : > A new kind of hybrid technology for heavy-duty vehicles uses hydraulics, rather than batteries, to store energy. Trucks using the system promise to be 30 percent more fuel-efficient than conventional vehicles. "Ann Arbor Saves with Hydraulic Hybrid Recycling Trucks" (2011) https://www.government-fleet.com/79387/ann-arbor-saves-with-hydraulic-hybrid-recycling-trucks https://www.government-fleet.com/79387/ann-arbor-saves-with-... : > This regeneration of braking energy improves fuel economy by 15 percent, saving the City almost 1,800 gallons of fuel each year. > The hydraulic regenerative braking system also led to savings in brake maintenance by increasing the life span of brakes. Normally, brakes are replaced several times per year, but in the year that Ann Arbor has been using the trucks, the brakes have not had to be replaced. This resulted in an annual savings of almost $12,000, [for four such 2010 vehicles] the Clean Energy Coalition stated. Marginal gross annual savings per recycling truck: (1800x + 12000y) / 4 = 450x + 3000y Potential savings given an even more efficient hydraulic regenerative braking system in a recycling truck scenario: x_before * (1-0.15) = 1800 x_before * (1-0.314) = x_314