Services

Services

ACS provides independent review, expert advice, technical solutions, facilitation, training, and contract labor. ACS offers end-to-end and cradle-to-grave support for attitude control system analysis, design, implementation, test, and operation.

ACS utilizes a variety of techniques from classical, modern, robust, nonlinear, adaptive, and stochastic control theory to obtain reliable control system designs and analyses. ACS has significant experience in algorithm and software development to deliver reliable and efficient software implementations of control systems and simulations.

Systems Engineering

· Proposal support

· Trade studies, feasibility studies, concept and system architecture development

· Requirements definition, analysis, and allocation

· ICD development and analysis

· Design Review and IV&V

· Technology and risk assessment

· CONOPS development and evaluation

Attitude Control System Engineering

· Pointing control and knowledge error budgets

· Pointing control system design

· Sensor and Actuator sizing, selection, modeling, and simulation

· Dynamics modeling and simulation

· Pointing error, displacement, jitter, and stability analysis

· Controller design and stability analysis

· Control-Structure Interaction (CSI) analysis

· Structural model reduction

· Gyro-less control system design

· Pointing command generation (geodetic, eigenaxis, slewing, etc)

· Attitude determination system design, software implementation, and test

· Attitude sensor alignment and gyro calibration analysis and design (real-time and ground-based)

· Attitude determination and calibration performance analysis

· GPS-based precision orbit determination; Orbit modeling and simulation

· Algorithm and Software development

· Flight software implementation and test

· Integration and Test

· Polarity/Phasing Test and Verification

Operations support

· In-flight operation and contingency planning

· In-flight performance assessment and diagnosis

· Ground-based attitude sensor alignment and gyro calibration

· Anomaly analysis and resolution