The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1994
Filed:
Oct. 13, 1993
Wolfgang Bullmer, Bietigheim-Bissingen, DE;
Robert Bosch GmbH, Stuttgart, US;
Abstract
The invention is directed to an arrangement for the current-regulated control of several actuators by a control computer. An individual control transistor is provided for each actuator. A single measuring resistor in series with a further control transistor defines a measuring and control arrangement for all actuators. Each individual control transistor for the respective individual actuators is connected in series with respective resistors. The resistance value of each of the resistors corresponds to the resistance value of the measuring resistor. Furthermore, switching elements are provided and controlled by the control computer. The actuators are connected in series with the measuring and control arrangement for a pregiven measuring and control time by the switchover elements. The actuators are normally in series with the individual control transistors assigned thereto. A control-signal sequence is supplied to each of the control transistors with the control-signal sequences being adjusted at the ancillary control transistor during the pregiven measuring and control time for the actuator corresponding thereto. In this way, an individual current control for a large number of actuators is possible with a single measuring resistor. The control operations all take place in the control computer and no separate analog control circuits are required.