using regulating devices with proportional band and derivative action, i.e. PD regulating devices

Full Title

Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover > with auxiliary non-electric power > using regulating devices with proportional band and derivative action, i.e. PD regulating devices

Child Classifications

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• G05D 13/54 involving centrifugal governors of fly-weight type exerting an acceleratory effect
• G05D 13/56 involving restoring mechanisms exerting a delay effect
• G05D 13/58 involving means for connecting a speed regulating device and an acceleration regulating device