characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement

Full Title

Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover > characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement