1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes最新文献

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The Cramer-Rao estimation error lower bound computation for deterministic nonlinear systems 确定性非线性系统的Cramer-Rao估计误差下界计算
James H. Taylor
{"title":"The Cramer-Rao estimation error lower bound computation for deterministic nonlinear systems","authors":"James H. Taylor","doi":"10.1109/CDC.1978.268121","DOIUrl":"https://doi.org/10.1109/CDC.1978.268121","url":null,"abstract":"For continuous-time nonlinear deterministic system models with discrete nonlinear measurements in additive gaussian white noise, the extended Kalman filter (EKF) covariance propagation equations linearized about the true unknown trajectory provide the Cramér-Rao lower bound to the estimation error covariance matrix. A useful application is establishing the optimum filter performance for a given nonlinear estimation problem by developing a simulation of the nonlinear system and an EKF linearized about the true trajectory.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115659583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 184
Optimal control of non-linear stochastic systems by approximation of the optimal cost functional 用最优代价泛函逼近非线性随机系统的最优控制
G. Campion
{"title":"Optimal control of non-linear stochastic systems by approximation of the optimal cost functional","authors":"G. Campion","doi":"10.1109/CDC.1978.268044","DOIUrl":"https://doi.org/10.1109/CDC.1978.268044","url":null,"abstract":"Among the deterministic policies for the optimal control of stochastic systems the best one is of closed-loop type, because it presents the \"dual effect\" of control. The theoretical closed-loop solution structure is deduced from Bellman's principle but is very difficult to implement in the non-linear case. This communication presents a closed-loop solution by approximation of the minimum cost function by introduction of the gaussian sum method.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114129782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pilot workload during final approach in congested airspace 在拥挤空域最后进近时飞行员的工作量
S. Hart
{"title":"Pilot workload during final approach in congested airspace","authors":"S. Hart","doi":"10.1109/CDC.1978.268137","DOIUrl":"https://doi.org/10.1109/CDC.1978.268137","url":null,"abstract":"Time estimation has been proposed as a measure of pilot workload and it appears that the production method provides a useful measure. The verbal estimation method has also been investigated and it appears that it does not provide as sensitive a measure of workload as does the production method. Verbal estimates are given with less precision and a series of verbal estimates tends to reflect a relative judgement of the duration of different intervals rather than an absolute judgement of the length of each interval. Overestimation may either reflect boredom during the interval, or the fact that a great deal of activity was performed during the interval that was remembered. Underestimation may either reflect a feeling that time passed quickly because interesting activities were engaged in, or that so little activity was performed or remembered, that very little time passed.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116072985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Feedforward control to track the output of a forced model 前馈控制跟踪一个强制模型的输出
M. O'Brien, J. Broussard
{"title":"Feedforward control to track the output of a forced model","authors":"M. O'Brien, J. Broussard","doi":"10.1109/CDC.1978.268115","DOIUrl":"https://doi.org/10.1109/CDC.1978.268115","url":null,"abstract":"In this paper a feedforward control technique is developed which enables a plant to perfectly track a model in the presence of a disturbance. It is assumed that both the model and the disturbance have time-varying inputs which are not known in advance. The technique used here develops dynamic compensators which have as inputs only a finite number of derivatives of the model and disturbance inputs. A procedure for using this technique in conjunction with optimal control is also given. Examples of how these teckniques can be used are presented.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116083940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 202
Stochastic control under chance constraints 随机约束下的随机控制
N. Christopeit
{"title":"Stochastic control under chance constraints","authors":"N. Christopeit","doi":"10.1109/CDC.1978.267977","DOIUrl":"https://doi.org/10.1109/CDC.1978.267977","url":null,"abstract":"In this paper a partially observable system governed by a linear stochastic differential equation is considered. The expected loss is to be minimized in the class of all feedback controls depending linearly on the observation process subject to the condition that the terminal point of the system process lies in some fixed target set with a prescribed probability. The existence of optimal controls is shown via the construction of an equivalent deterministic control problem.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121743310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of reflection coefficients from noisy data by means of extended minimum variance estimators: A critical examination 用扩展最小方差估计器从噪声数据中识别反射系数:一个关键的检验
J. Mendel
{"title":"Identification of reflection coefficients from noisy data by means of extended minimum variance estimators: A critical examination","authors":"J. Mendel","doi":"10.1109/CDC.1978.267957","DOIUrl":"https://doi.org/10.1109/CDC.1978.267957","url":null,"abstract":"Recently, a new class of time-domain state space models has been developed (Ref. 1) to describe layered media systems. When layers are uniform, the resulting state equations are referred to as uniform causal functional equations (UCFE). An example of a UCFE is: x (t + ¿) = Ax (t) + b [m(t) + w(t)] (1) where, for a K-layer system, x (t) is a 2K x 1 state vector comprised of K upgoing states and K downgoing states, m(t) is the source signature, w(t) is a random process which reflects uncertainty about our knowledge of m(t), and A and b are matrices (of appropriate dimensions) which are functions of reflection coefficients r0, r1,..., rK which characterize the system. Additionally, ¿ is the one-way travel time for each layer. A surface measurement (i.e., seismogram) y(t), where y(t) = h' x(t) + n(t) (2) is also assumed available. This measurement is corrupted by measurement noise, n(t) and is in terms of vector h which is also a function of some of the reflection coefficients.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121415421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Robustness of multiloop linear feedback systems 多环线性反馈系统的鲁棒性
J. Doyle
{"title":"Robustness of multiloop linear feedback systems","authors":"J. Doyle","doi":"10.1109/CDC.1978.267885","DOIUrl":"https://doi.org/10.1109/CDC.1978.267885","url":null,"abstract":"This paper presents a new approach to the frequency-domain analysis of multiloop linear feed-back systems. The properties of the return difference equation are examined using the concepts of singular values, singular vectors and the spectral norm of a matrix. A number of new tools for multiloop systems are developed which are analogous to those for scalar Nyquist and Bode analysis. These provide a generalization of the scalar frequency-domain notions such as gain, bandwidth, stability margins and M-circles, and provide considerable insight into system robustness.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123809423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 141
Maximum likelihood theory for a class of independently, but nonidentically distributed observations 一类独立但不相同分布的观测值的最大似然理论
Fang-kuo Sun, T. Lee
{"title":"Maximum likelihood theory for a class of independently, but nonidentically distributed observations","authors":"Fang-kuo Sun, T. Lee","doi":"10.1109/CDC.1978.268023","DOIUrl":"https://doi.org/10.1109/CDC.1978.268023","url":null,"abstract":"In this paper, maximum likelihood estimates of the mean and the covariance of a normal random variable, based on a set of independently, but nonidentically distributed observations, are discussed. An efficient algorithm for computing MLEs is introduced. The asymptotic properties such as strong consistency and asymptotic normality are examined.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125046360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Models for the human throat-wall and a study of the vocal tract from input/output measurements 人类喉壁模型和声道输入/输出测量的研究
N. Vemula, A. Engebretson, D. Elliott
{"title":"Models for the human throat-wall and a study of the vocal tract from input/output measurements","authors":"N. Vemula, A. Engebretson, D. Elliott","doi":"10.1109/CDC.1978.268070","DOIUrl":"https://doi.org/10.1109/CDC.1978.268070","url":null,"abstract":"Until now the human vocal tract area function and transfer function were studied from a time-series analysis of the speech signal alone, making some simple assumptions about the glottal source. In this paper we will present a study of the tract from measurements of the speech signal at the lips and the external throat-wall vibration signal near the glottis (\"input/output measurements\").","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125061631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Response of the adaptive line enhancer to chirped sinusoids 自适应线增强器对啁啾正弦信号的响应
J. Treichler
{"title":"Response of the adaptive line enhancer to chirped sinusoids","authors":"J. Treichler","doi":"10.1109/CDC.1978.268141","DOIUrl":"https://doi.org/10.1109/CDC.1978.268141","url":null,"abstract":"The Adaptive Line Enhancer (ALE) was first described by Widrow et al, as a practical on-line technique for separating the coherent components from the incoherent components of an input signal. Subsequent work has shown this same adaptive filtering structure to be applicable to maximum entropy spectral estimation, predictive deconvolution, and narrowband interference rejection, as well as other applications which have historically used matrix inversion and Levinson's algorithm techniques. While an often cited advantage of adaptive filtering is its tolerance of slowly time-varying input statistics, the existing analyses of the ALE have concentrated on the stationary case. This paper extends these results, applying the theory to the case of inputs containing sinusoids whose frequencies slowly vary in time. This is approached by developing a time-varying eigenvalue-eigenvector description of the expected filter impulse response vector which holds for any slowly nonstationary input. These results are then used to predict the expected impulse response vector for the ALE input of stationary white noise plus a sinusoid with linearly swept frequency. The response of the ALE for this particular input signal provides useful benchmarks for dealing with more complex forms of frequency modulation.","PeriodicalId":375119,"journal":{"name":"1978 IEEE Conference on Decision and Control including the 17th Symposium on Adaptive Processes","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130206873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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