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Learning Local Optimal Controller for a Class of Nonlinear Systems via Impulse-Supervised Exploration
arXiv:2606.03107v1 Announce Type: new Abstract: This paper develops an impulse-supervised confined exploration framework for learning local optimal controller for a class of nonlinear systems. The proposed approach combines continuous-time approximate dynamic programming (ADP) with an impulsive supervisory layer, where impulsive braking confines the state within a prescribed region in which a local linear approximation of the nonlinear system is valid.
Unlocking 'the true space age': Impulse Space raises $500 million to build out fleet of ultra-mobile spacecraft
Unlocking 'the true space age': Impulse Space raises $500 million to build out fleet of ultra-mobile spacecraft Impulse Space just got a lot more money to help finance its big ambitions in the final frontier. The California-based company — which was founded in 2021 by propulsion expert Tom Mueller, the first person Elon Musk ever hired at SpaceX — announced today (June 2) that it has raised $500 million in a "Series D" investment round. It will use the funds to scale up the production and...
Impulse Space raises $500 million at $4.26 billion valuation as space investing surges
Impulse Space raises $500 million at $4.26 billion valuation as space investing surges NEW YORK, June 2 : Impulse Space, a startup building spacecraft that can ferry satellites and other payloads around in orbit after launch, said on Tuesday it has raised $500 million in a Series D funding round. The funding round values the company at $4.26 billion, according to a person familiar with the matter. The company was founded by Tom Mueller, SpaceX's first employee and the propulsion engineer who...
Bounds on Prediction Error When Using an Impulse Response/Equilibrium Model Structure
Announce Type: new Abstract: An impulse response/equilibrium model (IREM) structure combines a linear convolution model with a nonlinear function that sets the current operating point via an equilibrium variable with integrator dynamics. This model structure is well suited for mildly nonlinear systems and in particular has been applied to battery fast charging control. This paper provides observability conditions for the IREM model structure and bounds on the prediction error.
Startup Impulse Space Raises $500 Million, Valued at $4 Billion
A rendering of Impulse Space's Helios vehicle.
Gauss Circle Lattices with Geometric Convolutions for Synthesizing High Dimensional Image-Source Room Impulse Responses
arXiv:2606.04358v1 Announce Type: new Abstract: The image-source model (ISM) is a widely adopted method for efficiently simulating acoustic room impulse responses (RIRs) under specular reflection assumptions. Acoustic paths between source and receiver are traced to lattice points computed from successive reflections over bounding planes of the room.
Impulse Space raises $500 million as orbital maneuvering race heats up
Getting around space, as it turns out, is kind of a big deal. On Tuesday, Impulse Space, a company dedicated to improving space mobility, announced it has raised $500 million in Series D funding. Since it was founded five years ago by SpaceX veteran Tom Mueller, the company has now raised more than $1 billion.
Impulse-to-Peak-Output Norm Optimal State-Feedback Control of Linear PDEs
arXiv:2604.03399v2 Announce Type: replace-cross Abstract: Impulse-to-peak response (I2P) analysis for state-space ordinary differential equation (ODE) systems is a well-studied classical problem. However, the techniques employed for I2P optimal control of ODEs have not been extended to partial differential equation (PDE) systems due to the lack of a universal transfer function and state-space representation. Recently, however, partial integral equation (PIE) representation was proposed as...
Rocket Report: Blue Origin explosion still making headlines; Impulse raises money
Welcome to Edition 8.44 of the Rocket Report! The news this week is decidedly weighted in favor of heavy-lift rockets, largely due to the fallout from last Thursday's explosion of Blue Origin's New Glenn on its launch pad in Florida. Blue Origin aims to resume launches at the badly damaged launch facility by the end of the year, but there's good reason to be skeptical of this timeline.