Dr. Ida Kahn

Caption: An early graduate of the University of Michigan, and one of the three women who inspired Mr. Barbour to establish the Levi L. Barbour Scholarships for Oriental Women

Regulation and integral control of an underactuated robotic system using IDA-PBC with dynamic extension

This paper proposes a method for design of a set-point regulation controller with integral action for an underactuated robotic system. The robot is described as a port-Hamiltonian system, and the control design is based on a coordinate transformation and a dynamic extension. Both the change of coordinates and the dynamic extension add extra degrees of freedom that facilitate the solution of the matching equation associated with interconnection and damping assignment passivity-based control designs (IDA-PBC). The stability of the controlled system is proved using the closed loop Hamiltonian as a Lyapunov candidate function. The performance of the proposed controller is shown in simulation.

Active control of car suspension systems using IDA-PBC

This paper considers the design of active control for car suspension systems using a particular form of energy-based control called Interconnection-and-Damping-Assignment Passivity-Based Control (IDA-PBC). This approach allows one to shape the kinetic and potential energy as well as modify the power flow among different components of the system by changing the interconnection and dissipative structure in a meaningful way. Different controller parameterisations are considered to design a class of controllers for active suspension systems.

A Novel Approach for Designing Generator Excitation controllers Using the IDA-PBC Technique

This paper presents a novel approach for designing of generator excitation controllers using Interconnection and Damping Assignment Passivity Based Control (IDA-PBC) technique for a Single Machine Infinite Bus (SMIB) system that can also be directly used in a multi-machine environment. The generator system equations are modified by referencing the rotor angle with respect to the secondary of the transformer bus instead of the infinite bus. For the modified system equations, IDA-PBC is applied to stabilize the system around an operating condition. The IDA-PBC design results in a Lyapunov function for the modified system. The new control law is practically feasible and can be applied directly to multi-machine system without referring to external system parameters. The effectiveness of the proposed controller is tested on a SMIB and a 10 generator 39 bus test system for a range of operating conditions. The Proposed excitation controller has shown good performance for both small and large disturbances when compared to the performance of a conventional static exciter with power system stabilizer.

Reproduction of portrait of Ida Dehmel, founder of Gedak Portraits; Women

Verso: Ida Dehmel als sie 1927 die Gedak gruendete

Reproduction of Richard Dehmel reading with his wife Ida Dehmel nee Auerbach sitting across from him, early in their marriage; Parkstrasse, Hamburg Portraits; Couples

Verso: Erste Wohnung Parkstrasse Fruehzeit der Ehe 1901

Portrait of Walter Godshaw, Charlie Sloan (Karl-Hermann Solomon), and Ida, Kaete Solomon's maid; Hannover, Germany.

From left to right: Walter Gottschalk, Ida, Charlie Sloan (Karl Hermann Solomon); Ida, Kaete Solomon's maid, nursed Charlie back to health after his release from Dachau

Portrait of Walter Godshaw, Charlie Sloan (Karl-Hermann Solomon), and Ida, Kaete Solomon's maid; Hannover, Germany.

From left to right: Walter Gottschalk, Ida, Charlie Sloan (Karl Hermann Solomon); Ida, Kaete Solomon's maid, nursed Charlie back to health after his release from Dachau

Sina Ida Judey outdoors holding flowers Portraits Women

Sina Ida was the youngest of the Judey siblings (Jacob, Lydia and Mary) and the only one to perish under the Nazis in Berlin

Portrait of Walter Godshaw, Charlie Sloan (Karl-Hermann Solomon), and Ida, Kaete Solomon's maid; Hannover, Germany.

From left to right: Walter Gottschalk, Ida, Charlie Sloan (Karl Hermann Solomon); Ida, Kaete Solomon's maid, nursed Charlie back to health after his release from Dachau

Portrait of Walter Godshaw, Charlie Sloan (Karl-Hermann Solomon), and Ida, Kaete Solomon's maid; Hannover, Germany.

From left to right: Walter Gottschalk, Ida, Charlie Sloan (Karl Hermann Solomon); Ida, Kaete Solomon's maid, nursed Charlie back to health after his release from Dachau

Ida Teutler with her daughter and father Portraits Family

Includes photos from Ida Teutler's daughter's wedding

The family Aaron Kahn /

Family history, translated by Fred Kahn.

"... I want an Ocean between us!" : Letters from Samuel Kahn, devoted father of one of the thousand children brought from Germany to the United States in 1934.

The manuscript contains letters written by Samuel Kahn to his daughter in the USA between 1934 and 1937.