Vehicle constant speed control circuit

US4094378A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hans Scheyhing
• Helmut Fleischer · Florstadt, DE
• Karl-Ludwig Abend

Key dates

• Filing date: Jul 16, 1976
• Grant date: Jun 13, 1978
• Expiry date: Jul 16, 1996

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60W2050/0009
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

To prevent hunting in an automatic vehicle speed maintenance circuit having a closed control loop, the control element is so arranged that the controller has not only proportional, but additionally derivative control characteristics to increase the response speed while permitting loop amplification which is necessary in view of the response delay characteristic of the controlled element, namely the vehicle itself.