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  • An Advanced Random Shaker Control Algorithm
    Closed-loop random Shaker Control algorithms used by SD2550 Systems employ both feed-back and. feed-forward control error correction processes. Feed-forward processing speeds the control correction. rate without compromising overall control stability. The control algorithms are also adaptive
  • Simulating Base-Shake Environmental Testing
    In most military aircraft and spacecraft applications, each. payload structure must be pre-tested on a shake table to ensure. that it can withstand the vibration environment that it. will experience during flight. Shaker testing is done using a. control PSD which is designed to realistically
  • Networking and Remote Communication on a Workstation-based Shaker Control System
    This paper discusses industry standard networking and remote operation capabilities for a. Shaker Control system. The Unix-based system utilizes Ethernet local area networking with. support for TCP/IP NFS, PCNFS, and other industry standard protocols. The flexible architecture and the X11 based
  • An Advanced Sine Control Algorithm Control System Dynamic Range
    Choosing a digital Shaker Control system to operate with either an electrodynamic or hydraulic shaker,. requires careful consideration of a number of issues. In addition to cost, the two most important factors for. a customer to evaluate are safety and performance. Obviously, a system that does
  • What is Environmental Stress Screening (ESS)?
    Although ESS may use chambers and shakers resembling those used for an environmental test, the purpose is different. In ESS it stimulates just-produced or just-overhauled equipment (usually an electronic assembly or subassembly), usually using rapid thermal ramping and broad-spectrum random
  • Why adopt multivariable control?
    As we all know, before doing vibration testing, we should edit the reference. spectrum with the vibration controller, usually low frequencies with constant. displacement spectrum, middle frequencies with constant velocity spectrum, while. the high frequencies with constant acceleration spectrum

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