摘要:

The solution is dealt with of the discrete-time LQ stochastic tracking and servo problems for a general system configuration. It is shown that the resultant solution is in the form of a three-degree-of-freedom (3DOF) controller when the vector of the exogenous signal is extended to include accessible disturbances. In particular, it is shown that a separation property between feedback, reference and accessible disturbance feedforward actions, proved for 2DOF optimal LQ stochastic control scheme, also holds true for the general system configuration here considered. Further, this separation property can be suitably extended, when a linear control law is assumed, to the minimax LQ stochastic tracking and servo problems

ISSN:0020-7721    

DOI:10.1080/00207729308949595

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

A code has been devised with a minimum distance D(c) = 2 to detect all unidirectional errors possible during communication. The ten decimal digits 0 to 9 are encoded using code words, each of which have seven bits. This is an unordered code with the minimum complexity in encoding and decoding to identify a codeword. The code is framed employing the uniform weight policy. This unique feature makes our code a complete unidirectional error-detecting code. In addition, the code proposed can correct one unidirectional error automatically by the proposed receiving-end logic. In addition, a uniform weighted code is suggested for ASCII which can detect all unidirectional errors with a limited 1-bit error correction ability

ISSN:0020-7721    

DOI:10.1080/00207729308949596

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor